diff options
Diffstat (limited to 'Documentation')
78 files changed, 16 insertions, 7415 deletions
diff --git a/Documentation/00-INDEX b/Documentation/00-INDEX index cb9a6c6fa83b..3acc4f1a6f84 100644 --- a/Documentation/00-INDEX +++ b/Documentation/00-INDEX @@ -46,7 +46,8 @@ IRQ.txt Intel-IOMMU.txt - basic info on the Intel IOMMU virtualization support. Makefile - - some files in Documentation dir are actually sample code to build + - This file does nothing. Removing it breaks make htmldocs and + make distclean. ManagementStyle - how to (attempt to) manage kernel hackers. RCU/ diff --git a/Documentation/Makefile b/Documentation/Makefile index de955e151af8..c2a469112c37 100644 --- a/Documentation/Makefile +++ b/Documentation/Makefile @@ -1,3 +1 @@ -subdir-y := accounting auxdisplay blackfin \ - filesystems filesystems ia64 laptops mic misc-devices \ - networking pcmcia prctl ptp timers vDSO watchdog +subdir-y := diff --git a/Documentation/accounting/.gitignore b/Documentation/accounting/.gitignore deleted file mode 100644 index 86485203c4ae..000000000000 --- a/Documentation/accounting/.gitignore +++ /dev/null @@ -1 +0,0 @@ -getdelays diff --git a/Documentation/accounting/Makefile b/Documentation/accounting/Makefile deleted file mode 100644 index 7e232cb6fd7d..000000000000 --- a/Documentation/accounting/Makefile +++ /dev/null @@ -1,7 +0,0 @@ -# List of programs to build -hostprogs-y := getdelays - -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS_getdelays.o += -I$(objtree)/usr/include diff --git a/Documentation/accounting/delay-accounting.txt b/Documentation/accounting/delay-accounting.txt index 8a12f0730c94..042ea59b5853 100644 --- a/Documentation/accounting/delay-accounting.txt +++ b/Documentation/accounting/delay-accounting.txt @@ -54,9 +54,9 @@ are sent to userspace without requiring a command. If it is the last exiting task of a thread group, the per-tgid statistics are also sent. More details are given in the taskstats interface description. -The getdelays.c userspace utility in this directory allows simple commands to -be run and the corresponding delay statistics to be displayed. It also serves -as an example of using the taskstats interface. +The getdelays.c userspace utility in tools/accounting directory allows simple +commands to be run and the corresponding delay statistics to be displayed. It +also serves as an example of using the taskstats interface. Usage ----- diff --git a/Documentation/accounting/getdelays.c b/Documentation/accounting/getdelays.c deleted file mode 100644 index b5ca536e56a8..000000000000 --- a/Documentation/accounting/getdelays.c +++ /dev/null @@ -1,550 +0,0 @@ -/* getdelays.c - * - * Utility to get per-pid and per-tgid delay accounting statistics - * Also illustrates usage of the taskstats interface - * - * Copyright (C) Shailabh Nagar, IBM Corp. 2005 - * Copyright (C) Balbir Singh, IBM Corp. 2006 - * Copyright (c) Jay Lan, SGI. 2006 - * - * Compile with - * gcc -I/usr/src/linux/include getdelays.c -o getdelays - */ - -#include <stdio.h> -#include <stdlib.h> -#include <errno.h> -#include <unistd.h> -#include <poll.h> -#include <string.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/socket.h> -#include <sys/wait.h> -#include <signal.h> - -#include <linux/genetlink.h> -#include <linux/taskstats.h> -#include <linux/cgroupstats.h> - -/* - * Generic macros for dealing with netlink sockets. Might be duplicated - * elsewhere. It is recommended that commercial grade applications use - * libnl or libnetlink and use the interfaces provided by the library - */ -#define GENLMSG_DATA(glh) ((void *)(NLMSG_DATA(glh) + GENL_HDRLEN)) -#define GENLMSG_PAYLOAD(glh) (NLMSG_PAYLOAD(glh, 0) - GENL_HDRLEN) -#define NLA_DATA(na) ((void *)((char*)(na) + NLA_HDRLEN)) -#define NLA_PAYLOAD(len) (len - NLA_HDRLEN) - -#define err(code, fmt, arg...) \ - do { \ - fprintf(stderr, fmt, ##arg); \ - exit(code); \ - } while (0) - -int done; -int rcvbufsz; -char name[100]; -int dbg; -int print_delays; -int print_io_accounting; -int print_task_context_switch_counts; - -#define PRINTF(fmt, arg...) { \ - if (dbg) { \ - printf(fmt, ##arg); \ - } \ - } - -/* Maximum size of response requested or message sent */ -#define MAX_MSG_SIZE 1024 -/* Maximum number of cpus expected to be specified in a cpumask */ -#define MAX_CPUS 32 - -struct msgtemplate { - struct nlmsghdr n; - struct genlmsghdr g; - char buf[MAX_MSG_SIZE]; -}; - -char cpumask[100+6*MAX_CPUS]; - -static void usage(void) -{ - fprintf(stderr, "getdelays [-dilv] [-w logfile] [-r bufsize] " - "[-m cpumask] [-t tgid] [-p pid]\n"); - fprintf(stderr, " -d: print delayacct stats\n"); - fprintf(stderr, " -i: print IO accounting (works only with -p)\n"); - fprintf(stderr, " -l: listen forever\n"); - fprintf(stderr, " -v: debug on\n"); - fprintf(stderr, " -C: container path\n"); -} - -/* - * Create a raw netlink socket and bind - */ -static int create_nl_socket(int protocol) -{ - int fd; - struct sockaddr_nl local; - - fd = socket(AF_NETLINK, SOCK_RAW, protocol); - if (fd < 0) - return -1; - - if (rcvbufsz) - if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, - &rcvbufsz, sizeof(rcvbufsz)) < 0) { - fprintf(stderr, "Unable to set socket rcv buf size to %d\n", - rcvbufsz); - goto error; - } - - memset(&local, 0, sizeof(local)); - local.nl_family = AF_NETLINK; - - if (bind(fd, (struct sockaddr *) &local, sizeof(local)) < 0) - goto error; - - return fd; -error: - close(fd); - return -1; -} - - -static int send_cmd(int sd, __u16 nlmsg_type, __u32 nlmsg_pid, - __u8 genl_cmd, __u16 nla_type, - void *nla_data, int nla_len) -{ - struct nlattr *na; - struct sockaddr_nl nladdr; - int r, buflen; - char *buf; - - struct msgtemplate msg; - - msg.n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN); - msg.n.nlmsg_type = nlmsg_type; - msg.n.nlmsg_flags = NLM_F_REQUEST; - msg.n.nlmsg_seq = 0; - msg.n.nlmsg_pid = nlmsg_pid; - msg.g.cmd = genl_cmd; - msg.g.version = 0x1; - na = (struct nlattr *) GENLMSG_DATA(&msg); - na->nla_type = nla_type; - na->nla_len = nla_len + 1 + NLA_HDRLEN; - memcpy(NLA_DATA(na), nla_data, nla_len); - msg.n.nlmsg_len += NLMSG_ALIGN(na->nla_len); - - buf = (char *) &msg; - buflen = msg.n.nlmsg_len ; - memset(&nladdr, 0, sizeof(nladdr)); - nladdr.nl_family = AF_NETLINK; - while ((r = sendto(sd, buf, buflen, 0, (struct sockaddr *) &nladdr, - sizeof(nladdr))) < buflen) { - if (r > 0) { - buf += r; - buflen -= r; - } else if (errno != EAGAIN) - return -1; - } - return 0; -} - - -/* - * Probe the controller in genetlink to find the family id - * for the TASKSTATS family - */ -static int get_family_id(int sd) -{ - struct { - struct nlmsghdr n; - struct genlmsghdr g; - char buf[256]; - } ans; - - int id = 0, rc; - struct nlattr *na; - int rep_len; - - strcpy(name, TASKSTATS_GENL_NAME); - rc = send_cmd(sd, GENL_ID_CTRL, getpid(), CTRL_CMD_GETFAMILY, - CTRL_ATTR_FAMILY_NAME, (void *)name, - strlen(TASKSTATS_GENL_NAME)+1); - if (rc < 0) - return 0; /* sendto() failure? */ - - rep_len = recv(sd, &ans, sizeof(ans), 0); - if (ans.n.nlmsg_type == NLMSG_ERROR || - (rep_len < 0) || !NLMSG_OK((&ans.n), rep_len)) - return 0; - - na = (struct nlattr *) GENLMSG_DATA(&ans); - na = (struct nlattr *) ((char *) na + NLA_ALIGN(na->nla_len)); - if (na->nla_type == CTRL_ATTR_FAMILY_ID) { - id = *(__u16 *) NLA_DATA(na); - } - return id; -} - -#define average_ms(t, c) (t / 1000000ULL / (c ? c : 1)) - -static void print_delayacct(struct taskstats *t) -{ - printf("\n\nCPU %15s%15s%15s%15s%15s\n" - " %15llu%15llu%15llu%15llu%15.3fms\n" - "IO %15s%15s%15s\n" - " %15llu%15llu%15llums\n" - "SWAP %15s%15s%15s\n" - " %15llu%15llu%15llums\n" - "RECLAIM %12s%15s%15s\n" - " %15llu%15llu%15llums\n", - "count", "real total", "virtual total", - "delay total", "delay average", - (unsigned long long)t->cpu_count, - (unsigned long long)t->cpu_run_real_total, - (unsigned long long)t->cpu_run_virtual_total, - (unsigned long long)t->cpu_delay_total, - average_ms((double)t->cpu_delay_total, t->cpu_count), - "count", "delay total", "delay average", - (unsigned long long)t->blkio_count, - (unsigned long long)t->blkio_delay_total, - average_ms(t->blkio_delay_total, t->blkio_count), - "count", "delay total", "delay average", - (unsigned long long)t->swapin_count, - (unsigned long long)t->swapin_delay_total, - average_ms(t->swapin_delay_total, t->swapin_count), - "count", "delay total", "delay average", - (unsigned long long)t->freepages_count, - (unsigned long long)t->freepages_delay_total, - average_ms(t->freepages_delay_total, t->freepages_count)); -} - -static void task_context_switch_counts(struct taskstats *t) -{ - printf("\n\nTask %15s%15s\n" - " %15llu%15llu\n", - "voluntary", "nonvoluntary", - (unsigned long long)t->nvcsw, (unsigned long long)t->nivcsw); -} - -static void print_cgroupstats(struct cgroupstats *c) -{ - printf("sleeping %llu, blocked %llu, running %llu, stopped %llu, " - "uninterruptible %llu\n", (unsigned long long)c->nr_sleeping, - (unsigned long long)c->nr_io_wait, - (unsigned long long)c->nr_running, - (unsigned long long)c->nr_stopped, - (unsigned long long)c->nr_uninterruptible); -} - - -static void print_ioacct(struct taskstats *t) -{ - printf("%s: read=%llu, write=%llu, cancelled_write=%llu\n", - t->ac_comm, - (unsigned long long)t->read_bytes, - (unsigned long long)t->write_bytes, - (unsigned long long)t->cancelled_write_bytes); -} - -int main(int argc, char *argv[]) -{ - int c, rc, rep_len, aggr_len, len2; - int cmd_type = TASKSTATS_CMD_ATTR_UNSPEC; - __u16 id; - __u32 mypid; - - struct nlattr *na; - int nl_sd = -1; - int len = 0; - pid_t tid = 0; - pid_t rtid = 0; - - int fd = 0; - int count = 0; - int write_file = 0; - int maskset = 0; - char *logfile = NULL; - int loop = 0; - int containerset = 0; - char *containerpath = NULL; - int cfd = 0; - int forking = 0; - sigset_t sigset; - - struct msgtemplate msg; - - while (!forking) { - c = getopt(argc, argv, "qdiw:r:m:t:p:vlC:c:"); - if (c < 0) - break; - - switch (c) { - case 'd': - printf("print delayacct stats ON\n"); - print_delays = 1; - break; - case 'i': - printf("printing IO accounting\n"); - print_io_accounting = 1; - break; - case 'q': - printf("printing task/process context switch rates\n"); - print_task_context_switch_counts = 1; - break; - case 'C': - containerset = 1; - containerpath = optarg; - break; - case 'w': - logfile = strdup(optarg); - printf("write to file %s\n", logfile); - write_file = 1; - break; - case 'r': - rcvbufsz = atoi(optarg); - printf("receive buf size %d\n", rcvbufsz); - if (rcvbufsz < 0) - err(1, "Invalid rcv buf size\n"); - break; - case 'm': - strncpy(cpumask, optarg, sizeof(cpumask)); - cpumask[sizeof(cpumask) - 1] = '\0'; - maskset = 1; - printf("cpumask %s maskset %d\n", cpumask, maskset); - break; - case 't': - tid = atoi(optarg); - if (!tid) - err(1, "Invalid tgid\n"); - cmd_type = TASKSTATS_CMD_ATTR_TGID; - break; - case 'p': - tid = atoi(optarg); - if (!tid) - err(1, "Invalid pid\n"); - cmd_type = TASKSTATS_CMD_ATTR_PID; - break; - case 'c': - - /* Block SIGCHLD for sigwait() later */ - if (sigemptyset(&sigset) == -1) - err(1, "Failed to empty sigset"); - if (sigaddset(&sigset, SIGCHLD)) - err(1, "Failed to set sigchld in sigset"); - sigprocmask(SIG_BLOCK, &sigset, NULL); - - /* fork/exec a child */ - tid = fork(); - if (tid < 0) - err(1, "Fork failed\n"); - if (tid == 0) - if (execvp(argv[optind - 1], - &argv[optind - 1]) < 0) - exit(-1); - - /* Set the command type and avoid further processing */ - cmd_type = TASKSTATS_CMD_ATTR_PID; - forking = 1; - break; - case 'v': - printf("debug on\n"); - dbg = 1; - break; - case 'l': - printf("listen forever\n"); - loop = 1; - break; - default: - usage(); - exit(-1); - } - } - - if (write_file) { - fd = open(logfile, O_WRONLY | O_CREAT | O_TRUNC, - S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); - if (fd == -1) { - perror("Cannot open output file\n"); - exit(1); - } - } - - nl_sd = create_nl_socket(NETLINK_GENERIC); - if (nl_sd < 0) - err(1, "error creating Netlink socket\n"); - - - mypid = getpid(); - id = get_family_id(nl_sd); - if (!id) { - fprintf(stderr, "Error getting family id, errno %d\n", errno); - goto err; - } - PRINTF("family id %d\n", id); - - if (maskset) { - rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET, - TASKSTATS_CMD_ATTR_REGISTER_CPUMASK, - &cpumask, strlen(cpumask) + 1); - PRINTF("Sent register cpumask, retval %d\n", rc); - if (rc < 0) { - fprintf(stderr, "error sending register cpumask\n"); - goto err; - } - } - - if (tid && containerset) { - fprintf(stderr, "Select either -t or -C, not both\n"); - goto err; - } - - /* - * If we forked a child, wait for it to exit. Cannot use waitpid() - * as all the delicious data would be reaped as part of the wait - */ - if (tid && forking) { - int sig_received; - sigwait(&sigset, &sig_received); - } - - if (tid) { - rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET, - cmd_type, &tid, sizeof(__u32)); - PRINTF("Sent pid/tgid, retval %d\n", rc); - if (rc < 0) { - fprintf(stderr, "error sending tid/tgid cmd\n"); - goto done; - } - } - - if (containerset) { - cfd = open(containerpath, O_RDONLY); - if (cfd < 0) { - perror("error opening container file"); - goto err; - } - rc = send_cmd(nl_sd, id, mypid, CGROUPSTATS_CMD_GET, - CGROUPSTATS_CMD_ATTR_FD, &cfd, sizeof(__u32)); - if (rc < 0) { - perror("error sending cgroupstats command"); - goto err; - } - } - if (!maskset && !tid && !containerset) { - usage(); - goto err; - } - - do { - rep_len = recv(nl_sd, &msg, sizeof(msg), 0); - PRINTF("received %d bytes\n", rep_len); - - if (rep_len < 0) { - fprintf(stderr, "nonfatal reply error: errno %d\n", - errno); - continue; - } - if (msg.n.nlmsg_type == NLMSG_ERROR || - !NLMSG_OK((&msg.n), rep_len)) { - struct nlmsgerr *err = NLMSG_DATA(&msg); - fprintf(stderr, "fatal reply error, errno %d\n", - err->error); - goto done; - } - - PRINTF("nlmsghdr size=%zu, nlmsg_len=%d, rep_len=%d\n", - sizeof(struct nlmsghdr), msg.n.nlmsg_len, rep_len); - - - rep_len = GENLMSG_PAYLOAD(&msg.n); - - na = (struct nlattr *) GENLMSG_DATA(&msg); - len = 0; - while (len < rep_len) { - len += NLA_ALIGN(na->nla_len); - switch (na->nla_type) { - case TASKSTATS_TYPE_AGGR_TGID: - /* Fall through */ - case TASKSTATS_TYPE_AGGR_PID: - aggr_len = NLA_PAYLOAD(na->nla_len); - len2 = 0; - /* For nested attributes, na follows */ - na = (struct nlattr *) NLA_DATA(na); - done = 0; - while (len2 < aggr_len) { - switch (na->nla_type) { - case TASKSTATS_TYPE_PID: - rtid = *(int *) NLA_DATA(na); - if (print_delays) - printf("PID\t%d\n", rtid); - break; - case TASKSTATS_TYPE_TGID: - rtid = *(int *) NLA_DATA(na); - if (print_delays) - printf("TGID\t%d\n", rtid); - break; - case TASKSTATS_TYPE_STATS: - count++; - if (print_delays) - print_delayacct((struct taskstats *) NLA_DATA(na)); - if (print_io_accounting) - print_ioacct((struct taskstats *) NLA_DATA(na)); - if (print_task_context_switch_counts) - task_context_switch_counts((struct taskstats *) NLA_DATA(na)); - if (fd) { - if (write(fd, NLA_DATA(na), na->nla_len) < 0) { - err(1,"write error\n"); - } - } - if (!loop) - goto done; - break; - case TASKSTATS_TYPE_NULL: - break; - default: - fprintf(stderr, "Unknown nested" - " nla_type %d\n", - na->nla_type); - break; - } - len2 += NLA_ALIGN(na->nla_len); - na = (struct nlattr *)((char *)na + - NLA_ALIGN(na->nla_len)); - } - break; - - case CGROUPSTATS_TYPE_CGROUP_STATS: - print_cgroupstats(NLA_DATA(na)); - break; - default: - fprintf(stderr, "Unknown nla_type %d\n", - na->nla_type); - case TASKSTATS_TYPE_NULL: - break; - } - na = (struct nlattr *) (GENLMSG_DATA(&msg) + len); - } - } while (loop); -done: - if (maskset) { - rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET, - TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK, - &cpumask, strlen(cpumask) + 1); - printf("Sent deregister mask, retval %d\n", rc); - if (rc < 0) - err(rc, "error sending deregister cpumask\n"); - } -err: - close(nl_sd); - if (fd) - close(fd); - if (cfd) - close(cfd); - return 0; -} diff --git a/Documentation/arm/00-INDEX b/Documentation/arm/00-INDEX index dea011c8d7c7..b6e69fd371c4 100644 --- a/Documentation/arm/00-INDEX +++ b/Documentation/arm/00-INDEX @@ -8,8 +8,6 @@ Interrupts - ARM Interrupt subsystem documentation IXP4xx - Intel IXP4xx Network processor. -Makefile - - Build sourcefiles as part of the Documentation-build for arm Netwinder - Netwinder specific documentation Porting diff --git a/Documentation/auxdisplay/.gitignore b/Documentation/auxdisplay/.gitignore deleted file mode 100644 index 7af222860a96..000000000000 --- a/Documentation/auxdisplay/.gitignore +++ /dev/null @@ -1 +0,0 @@ -cfag12864b-example diff --git a/Documentation/auxdisplay/Makefile b/Documentation/auxdisplay/Makefile deleted file mode 100644 index ada4dac99ef4..000000000000 --- a/Documentation/auxdisplay/Makefile +++ /dev/null @@ -1,7 +0,0 @@ -# List of programs to build -hostprogs-y := cfag12864b-example - -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS_cfag12864b-example.o += -I$(objtree)/usr/include diff --git a/Documentation/auxdisplay/cfag12864b b/Documentation/auxdisplay/cfag12864b index eb7be393a510..12fd51b8de75 100644 --- a/Documentation/auxdisplay/cfag12864b +++ b/Documentation/auxdisplay/cfag12864b @@ -101,5 +101,5 @@ Although the LCD won't get updated until the next refresh time arrives. Also, you can mmap the framebuffer: open & mmap, munmap & close... which is the best option for most uses. -Check Documentation/auxdisplay/cfag12864b-example.c +Check samples/auxdisplay/cfag12864b-example.c for a real working userspace complete program with usage examples. diff --git a/Documentation/auxdisplay/cfag12864b-example.c b/Documentation/auxdisplay/cfag12864b-example.c deleted file mode 100644 index e7823ffb1ca0..000000000000 --- a/Documentation/auxdisplay/cfag12864b-example.c +++ /dev/null @@ -1,281 +0,0 @@ -/* - * Filename: cfag12864b-example.c - * Version: 0.1.0 - * Description: cfag12864b LCD userspace example program - * License: GPLv2 - * - * Author: Copyright (C) Miguel Ojeda Sandonis - * Date: 2006-10-31 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -/* - * ------------------------ - * start of cfag12864b code - * ------------------------ - */ - -#include <string.h> -#include <fcntl.h> -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/mman.h> - -#define CFAG12864B_WIDTH (128) -#define CFAG12864B_HEIGHT (64) -#define CFAG12864B_SIZE (128 * 64 / 8) -#define CFAG12864B_BPB (8) -#define CFAG12864B_ADDRESS(x, y) ((y) * CFAG12864B_WIDTH / \ - CFAG12864B_BPB + (x) / CFAG12864B_BPB) -#define CFAG12864B_BIT(n) (((unsigned char) 1) << (n)) - -#undef CFAG12864B_DOCHECK -#ifdef CFAG12864B_DOCHECK - #define CFAG12864B_CHECK(x, y) ((x) < CFAG12864B_WIDTH && \ - (y) < CFAG12864B_HEIGHT) -#else - #define CFAG12864B_CHECK(x, y) (1) -#endif - -int cfag12864b_fd; -unsigned char * cfag12864b_mem; -unsigned char cfag12864b_buffer[CFAG12864B_SIZE]; - -/* - * init a cfag12864b framebuffer device - * - * No error: return = 0 - * Unable to open: return = -1 - * Unable to mmap: return = -2 - */ -static int cfag12864b_init(char *path) -{ - cfag12864b_fd = open(path, O_RDWR); - if (cfag12864b_fd == -1) - return -1; - - cfag12864b_mem = mmap(0, CFAG12864B_SIZE, PROT_READ | PROT_WRITE, - MAP_SHARED, cfag12864b_fd, 0); - if (cfag12864b_mem == MAP_FAILED) { - close(cfag12864b_fd); - return -2; - } - - return 0; -} - -/* - * exit a cfag12864b framebuffer device - */ -static void cfag12864b_exit(void) -{ - munmap(cfag12864b_mem, CFAG12864B_SIZE); - close(cfag12864b_fd); -} - -/* - * set (x, y) pixel - */ -static void cfag12864b_set(unsigned char x, unsigned char y) -{ - if (CFAG12864B_CHECK(x, y)) - cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] |= - CFAG12864B_BIT(x % CFAG12864B_BPB); -} - -/* - * unset (x, y) pixel - */ -static void cfag12864b_unset(unsigned char x, unsigned char y) -{ - if (CFAG12864B_CHECK(x, y)) - cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] &= - ~CFAG12864B_BIT(x % CFAG12864B_BPB); -} - -/* - * is set (x, y) pixel? - * - * Pixel off: return = 0 - * Pixel on: return = 1 - */ -static unsigned char cfag12864b_isset(unsigned char x, unsigned char y) -{ - if (CFAG12864B_CHECK(x, y)) - if (cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] & - CFAG12864B_BIT(x % CFAG12864B_BPB)) - return 1; - - return 0; -} - -/* - * not (x, y) pixel - */ -static void cfag12864b_not(unsigned char x, unsigned char y) -{ - if (cfag12864b_isset(x, y)) - cfag12864b_unset(x, y); - else - cfag12864b_set(x, y); -} - -/* - * fill (set all pixels) - */ -static void cfag12864b_fill(void) -{ - unsigned short i; - - for (i = 0; i < CFAG12864B_SIZE; i++) - cfag12864b_buffer[i] = 0xFF; -} - -/* - * clear (unset all pixels) - */ -static void cfag12864b_clear(void) -{ - unsigned short i; - - for (i = 0; i < CFAG12864B_SIZE; i++) - cfag12864b_buffer[i] = 0; -} - -/* - * format a [128*64] matrix - * - * Pixel off: src[i] = 0 - * Pixel on: src[i] > 0 - */ -static void cfag12864b_format(unsigned char * matrix) -{ - unsigned char i, j, n; - - for (i = 0; i < CFAG12864B_HEIGHT; i++) - for (j = 0; j < CFAG12864B_WIDTH / CFAG12864B_BPB; j++) { - cfag12864b_buffer[i * CFAG12864B_WIDTH / CFAG12864B_BPB + - j] = 0; - for (n = 0; n < CFAG12864B_BPB; n++) - if (matrix[i * CFAG12864B_WIDTH + - j * CFAG12864B_BPB + n]) - cfag12864b_buffer[i * CFAG12864B_WIDTH / - CFAG12864B_BPB + j] |= - CFAG12864B_BIT(n); - } -} - -/* - * blit buffer to lcd - */ -static void cfag12864b_blit(void) -{ - memcpy(cfag12864b_mem, cfag12864b_buffer, CFAG12864B_SIZE); -} - -/* - * ---------------------- - * end of cfag12864b code - * ---------------------- - */ - -#include <stdio.h> - -#define EXAMPLES 6 - -static void example(unsigned char n) -{ - unsigned short i, j; - unsigned char matrix[CFAG12864B_WIDTH * CFAG12864B_HEIGHT]; - - if (n > EXAMPLES) - return; - - printf("Example %i/%i - ", n, EXAMPLES); - - switch (n) { - case 1: - printf("Draw points setting bits"); - cfag12864b_clear(); - for (i = 0; i < CFAG12864B_WIDTH; i += 2) - for (j = 0; j < CFAG12864B_HEIGHT; j += 2) - cfag12864b_set(i, j); - break; - - case 2: - printf("Clear the LCD"); - cfag12864b_clear(); - break; - - case 3: - printf("Draw rows formatting a [128*64] matrix"); - memset(matrix, 0, CFAG12864B_WIDTH * CFAG12864B_HEIGHT); - for (i = 0; i < CFAG12864B_WIDTH; i++) - for (j = 0; j < CFAG12864B_HEIGHT; j += 2) - matrix[j * CFAG12864B_WIDTH + i] = 1; - cfag12864b_format(matrix); - break; - - case 4: - printf("Fill the lcd"); - cfag12864b_fill(); - break; - - case 5: - printf("Draw columns unsetting bits"); - for (i = 0; i < CFAG12864B_WIDTH; i += 2) - for (j = 0; j < CFAG12864B_HEIGHT; j++) - cfag12864b_unset(i, j); - break; - - case 6: - printf("Do negative not-ing all bits"); - for (i = 0; i < CFAG12864B_WIDTH; i++) - for (j = 0; j < CFAG12864B_HEIGHT; j ++) - cfag12864b_not(i, j); - break; - } - - puts(" - [Press Enter]"); -} - -int main(int argc, char *argv[]) -{ - unsigned char n; - - if (argc != 2) { - printf( - "Sintax: %s fbdev\n" - "Usually: /dev/fb0, /dev/fb1...\n", argv[0]); - return -1; - } - - if (cfag12864b_init(argv[1])) { - printf("Can't init %s fbdev\n", argv[1]); - return -2; - } - - for (n = 1; n <= EXAMPLES; n++) { - example(n); - cfag12864b_blit(); - while (getchar() != '\n'); - } - - cfag12864b_exit(); - - return 0; -} diff --git a/Documentation/blackfin/00-INDEX b/Documentation/blackfin/00-INDEX index c54fcdd4ae9f..265a1effebde 100644 --- a/Documentation/blackfin/00-INDEX +++ b/Documentation/blackfin/00-INDEX @@ -1,10 +1,6 @@ 00-INDEX - This file -Makefile - - Makefile for gptimers example file. bfin-gpio-notes.txt - Notes in developing/using bfin-gpio driver. bfin-spi-notes.txt - Notes for using bfin spi bus driver. -gptimers-example.c - - gptimers example diff --git a/Documentation/blackfin/Makefile b/Documentation/blackfin/Makefile deleted file mode 100644 index 6782c58fbc29..000000000000 --- a/Documentation/blackfin/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -ifneq ($(CONFIG_BLACKFIN),) -ifneq ($(CONFIG_BFIN_GPTIMERS),) -obj-m := gptimers-example.o -endif -endif diff --git a/Documentation/blackfin/gptimers-example.c b/Documentation/blackfin/gptimers-example.c deleted file mode 100644 index 283eba993d9d..000000000000 --- a/Documentation/blackfin/gptimers-example.c +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Simple gptimers example - * http://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:drivers:gptimers - * - * Copyright 2007-2009 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#include <linux/interrupt.h> -#include <linux/module.h> - -#include <asm/gptimers.h> -#include <asm/portmux.h> - -/* ... random driver includes ... */ - -#define DRIVER_NAME "gptimer_example" - -#ifdef IRQ_TIMER5 -#define SAMPLE_IRQ_TIMER IRQ_TIMER5 -#else -#define SAMPLE_IRQ_TIMER IRQ_TIMER2 -#endif - -struct gptimer_data { - uint32_t period, width; -}; -static struct gptimer_data data; - -/* ... random driver state ... */ - -static irqreturn_t gptimer_example_irq(int irq, void *dev_id) -{ - struct gptimer_data *data = dev_id; - - /* make sure it was our timer which caused the interrupt */ - if (!get_gptimer_intr(TIMER5_id)) - return IRQ_NONE; - - /* read the width/period values that were captured for the waveform */ - data->width = get_gptimer_pwidth(TIMER5_id); - data->period = get_gptimer_period(TIMER5_id); - - /* acknowledge the interrupt */ - clear_gptimer_intr(TIMER5_id); - - /* tell the upper layers we took care of things */ - return IRQ_HANDLED; -} - -/* ... random driver code ... */ - -static int __init gptimer_example_init(void) -{ - int ret; - - /* grab the peripheral pins */ - ret = peripheral_request(P_TMR5, DRIVER_NAME); - if (ret) { - printk(KERN_NOTICE DRIVER_NAME ": peripheral request failed\n"); - return ret; - } - - /* grab the IRQ for the timer */ - ret = request_irq(SAMPLE_IRQ_TIMER, gptimer_example_irq, - IRQF_SHARED, DRIVER_NAME, &data); - if (ret) { - printk(KERN_NOTICE DRIVER_NAME ": IRQ request failed\n"); - peripheral_free(P_TMR5); - return ret; - } - - /* setup the timer and enable it */ - set_gptimer_config(TIMER5_id, - WDTH_CAP | PULSE_HI | PERIOD_CNT | IRQ_ENA); - enable_gptimers(TIMER5bit); - - return 0; -} -module_init(gptimer_example_init); - -static void __exit gptimer_example_exit(void) -{ - disable_gptimers(TIMER5bit); - free_irq(SAMPLE_IRQ_TIMER, &data); - peripheral_free(P_TMR5); -} -module_exit(gptimer_example_exit); - -MODULE_LICENSE("BSD"); diff --git a/Documentation/filesystems/.gitignore b/Documentation/filesystems/.gitignore deleted file mode 100644 index 31d6e426b6d4..000000000000 --- a/Documentation/filesystems/.gitignore +++ /dev/null @@ -1 +0,0 @@ -dnotify_test diff --git a/Documentation/filesystems/00-INDEX b/Documentation/filesystems/00-INDEX index 9922939e7d99..f66e748fc5e4 100644 --- a/Documentation/filesystems/00-INDEX +++ b/Documentation/filesystems/00-INDEX @@ -2,8 +2,6 @@ - this file (info on some of the filesystems supported by linux). Locking - info on locking rules as they pertain to Linux VFS. -Makefile - - Makefile for building the filsystems-part of DocBook. 9p.txt - 9p (v9fs) is an implementation of the Plan 9 remote fs protocol. adfs.txt diff --git a/Documentation/filesystems/Makefile b/Documentation/filesystems/Makefile deleted file mode 100644 index 883010ce5e35..000000000000 --- a/Documentation/filesystems/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# List of programs to build -hostprogs-y := dnotify_test - -# Tell kbuild to always build the programs -always := $(hostprogs-y) diff --git a/Documentation/filesystems/dnotify_test.c b/Documentation/filesystems/dnotify_test.c deleted file mode 100644 index 8b37b4a1e18d..000000000000 --- a/Documentation/filesystems/dnotify_test.c +++ /dev/null @@ -1,34 +0,0 @@ -#define _GNU_SOURCE /* needed to get the defines */ -#include <fcntl.h> /* in glibc 2.2 this has the needed - values defined */ -#include <signal.h> -#include <stdio.h> -#include <unistd.h> - -static volatile int event_fd; - -static void handler(int sig, siginfo_t *si, void *data) -{ - event_fd = si->si_fd; -} - -int main(void) -{ - struct sigaction act; - int fd; - - act.sa_sigaction = handler; - sigemptyset(&act.sa_mask); - act.sa_flags = SA_SIGINFO; - sigaction(SIGRTMIN + 1, &act, NULL); - - fd = open(".", O_RDONLY); - fcntl(fd, F_SETSIG, SIGRTMIN + 1); - fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT); - /* we will now be notified if any of the files - in "." is modified or new files are created */ - while (1) { - pause(); - printf("Got event on fd=%d\n", event_fd); - } -} diff --git a/Documentation/ia64/.gitignore b/Documentation/ia64/.gitignore deleted file mode 100644 index ab806edc8732..000000000000 --- a/Documentation/ia64/.gitignore +++ /dev/null @@ -1 +0,0 @@ -aliasing-test diff --git a/Documentation/ia64/Makefile b/Documentation/ia64/Makefile deleted file mode 100644 index d493163affe7..000000000000 --- a/Documentation/ia64/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# List of programs to build -hostprogs-y := aliasing-test - -# Tell kbuild to always build the programs -always := $(hostprogs-y) diff --git a/Documentation/ia64/aliasing-test.c b/Documentation/ia64/aliasing-test.c deleted file mode 100644 index 62a190d45f38..000000000000 --- a/Documentation/ia64/aliasing-test.c +++ /dev/null @@ -1,263 +0,0 @@ -/* - * Exercise /dev/mem mmap cases that have been troublesome in the past - * - * (c) Copyright 2007 Hewlett-Packard Development Company, L.P. - * Bjorn Helgaas <bjorn.helgaas@hp.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <stdlib.h> -#include <stdio.h> -#include <sys/types.h> -#include <dirent.h> -#include <fcntl.h> -#include <fnmatch.h> -#include <string.h> -#include <sys/ioctl.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <unistd.h> -#include <linux/pci.h> - -int sum; - -static int map_mem(char *path, off_t offset, size_t length, int touch) -{ - int fd, rc; - void *addr; - int *c; - - fd = open(path, O_RDWR); - if (fd == -1) { - perror(path); - return -1; - } - - if (fnmatch("/proc/bus/pci/*", path, 0) == 0) { - rc = ioctl(fd, PCIIOC_MMAP_IS_MEM); - if (rc == -1) - perror("PCIIOC_MMAP_IS_MEM ioctl"); - } - - addr = mmap(NULL, length, PROT_READ|PROT_WRITE, MAP_SHARED, fd, offset); - if (addr == MAP_FAILED) - return 1; - - if (touch) { - c = (int *) addr; - while (c < (int *) (addr + length)) - sum += *c++; - } - - rc = munmap(addr, length); - if (rc == -1) { - perror("munmap"); - return -1; - } - - close(fd); - return 0; -} - -static int scan_tree(char *path, char *file, off_t offset, size_t length, int touch) -{ - struct dirent **namelist; - char *name, *path2; - int i, n, r, rc = 0, result = 0; - struct stat buf; - - n = scandir(path, &namelist, 0, alphasort); - if (n < 0) { - perror("scandir"); - return -1; - } - - for (i = 0; i < n; i++) { - name = namelist[i]->d_name; - - if (fnmatch(".", name, 0) == 0) - goto skip; - if (fnmatch("..", name, 0) == 0) - goto skip; - - path2 = malloc(strlen(path) + strlen(name) + 3); - strcpy(path2, path); - strcat(path2, "/"); - strcat(path2, name); - - if (fnmatch(file, name, 0) == 0) { - rc = map_mem(path2, offset, length, touch); - if (rc == 0) - fprintf(stderr, "PASS: %s 0x%lx-0x%lx is %s\n", path2, offset, offset + length, touch ? "readable" : "mappable"); - else if (rc > 0) - fprintf(stderr, "PASS: %s 0x%lx-0x%lx not mappable\n", path2, offset, offset + length); - else { - fprintf(stderr, "FAIL: %s 0x%lx-0x%lx not accessible\n", path2, offset, offset + length); - return rc; - } - } else { - r = lstat(path2, &buf); - if (r == 0 && S_ISDIR(buf.st_mode)) { - rc = scan_tree(path2, file, offset, length, touch); - if (rc < 0) - return rc; - } - } - - result |= rc; - free(path2); - -skip: - free(namelist[i]); - } - free(namelist); - return result; -} - -char buf[1024]; - -static int read_rom(char *path) -{ - int fd, rc; - size_t size = 0; - - fd = open(path, O_RDWR); - if (fd == -1) { - perror(path); - return -1; - } - - rc = write(fd, "1", 2); - if (rc <= 0) { - close(fd); - perror("write"); - return -1; - } - - do { - rc = read(fd, buf, sizeof(buf)); - if (rc > 0) - size += rc; - } while (rc > 0); - - close(fd); - return size; -} - -static int scan_rom(char *path, char *file) -{ - struct dirent **namelist; - char *name, *path2; - int i, n, r, rc = 0, result = 0; - struct stat buf; - - n = scandir(path, &namelist, 0, alphasort); - if (n < 0) { - perror("scandir"); - return -1; - } - - for (i = 0; i < n; i++) { - name = namelist[i]->d_name; - - if (fnmatch(".", name, 0) == 0) - goto skip; - if (fnmatch("..", name, 0) == 0) - goto skip; - - path2 = malloc(strlen(path) + strlen(name) + 3); - strcpy(path2, path); - strcat(path2, "/"); - strcat(path2, name); - - if (fnmatch(file, name, 0) == 0) { - rc = read_rom(path2); - - /* - * It's OK if the ROM is unreadable. Maybe there - * is no ROM, or some other error occurred. The - * important thing is that no MCA happened. - */ - if (rc > 0) - fprintf(stderr, "PASS: %s read %d bytes\n", path2, rc); - else { - fprintf(stderr, "PASS: %s not readable\n", path2); - return rc; - } - } else { - r = lstat(path2, &buf); - if (r == 0 && S_ISDIR(buf.st_mode)) { - rc = scan_rom(path2, file); - if (rc < 0) - return rc; - } - } - - result |= rc; - free(path2); - -skip: - free(namelist[i]); - } - free(namelist); - return result; -} - -int main(void) -{ - int rc; - - if (map_mem("/dev/mem", 0, 0xA0000, 1) == 0) - fprintf(stderr, "PASS: /dev/mem 0x0-0xa0000 is readable\n"); - else - fprintf(stderr, "FAIL: /dev/mem 0x0-0xa0000 not accessible\n"); - - /* - * It's not safe to blindly read the VGA frame buffer. If you know - * how to poke the card the right way, it should respond, but it's - * not safe in general. Many machines, e.g., Intel chipsets, cover - * up a non-responding card by just returning -1, but others will - * report the failure as a machine check. - */ - if (map_mem("/dev/mem", 0xA0000, 0x20000, 0) == 0) - fprintf(stderr, "PASS: /dev/mem 0xa0000-0xc0000 is mappable\n"); - else - fprintf(stderr, "FAIL: /dev/mem 0xa0000-0xc0000 not accessible\n"); - - if (map_mem("/dev/mem", 0xC0000, 0x40000, 1) == 0) - fprintf(stderr, "PASS: /dev/mem 0xc0000-0x100000 is readable\n"); - else - fprintf(stderr, "FAIL: /dev/mem 0xc0000-0x100000 not accessible\n"); - - /* - * Often you can map all the individual pieces above (0-0xA0000, - * 0xA0000-0xC0000, and 0xC0000-0x100000), but can't map the whole - * thing at once. This is because the individual pieces use different - * attributes, and there's no single attribute supported over the - * whole region. - */ - rc = map_mem("/dev/mem", 0, 1024*1024, 0); - if (rc == 0) - fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 is mappable\n"); - else if (rc > 0) - fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 not mappable\n"); - else - fprintf(stderr, "FAIL: /dev/mem 0x0-0x100000 not accessible\n"); - - scan_tree("/sys/class/pci_bus", "legacy_mem", 0, 0xA0000, 1); - scan_tree("/sys/class/pci_bus", "legacy_mem", 0xA0000, 0x20000, 0); - scan_tree("/sys/class/pci_bus", "legacy_mem", 0xC0000, 0x40000, 1); - scan_tree("/sys/class/pci_bus", "legacy_mem", 0, 1024*1024, 0); - - scan_rom("/sys/devices", "rom"); - - scan_tree("/proc/bus/pci", "??.?", 0, 0xA0000, 1); - scan_tree("/proc/bus/pci", "??.?", 0xA0000, 0x20000, 0); - scan_tree("/proc/bus/pci", "??.?", 0xC0000, 0x40000, 1); - scan_tree("/proc/bus/pci", "??.?", 0, 1024*1024, 0); - - return rc; -} diff --git a/Documentation/kselftest.txt b/Documentation/kselftest.txt index 979eacae243d..54bee77fa728 100644 --- a/Documentation/kselftest.txt +++ b/Documentation/kselftest.txt @@ -1,8 +1,9 @@ Linux Kernel Selftests The kernel contains a set of "self tests" under the tools/testing/selftests/ -directory. These are intended to be small unit tests to exercise individual -code paths in the kernel. +directory. These are intended to be small tests to exercise individual code +paths in the kernel. Tests are intended to be run after building, installing +and booting a kernel. On some systems, hot-plug tests could hang forever waiting for cpu and memory to be ready to be offlined. A special hot-plug target is created diff --git a/Documentation/laptops/.gitignore b/Documentation/laptops/.gitignore deleted file mode 100644 index 9fc984e64386..000000000000 --- a/Documentation/laptops/.gitignore +++ /dev/null @@ -1 +0,0 @@ -dslm diff --git a/Documentation/laptops/00-INDEX b/Documentation/laptops/00-INDEX index 7c0ac2a26b9e..86169dc766f7 100644 --- a/Documentation/laptops/00-INDEX +++ b/Documentation/laptops/00-INDEX @@ -1,13 +1,9 @@ 00-INDEX - This file -Makefile - - Makefile for building dslm example program. asus-laptop.txt - information on the Asus Laptop Extras driver. disk-shock-protection.txt - information on hard disk shock protection. -dslm.c - - Simple Disk Sleep Monitor program laptop-mode.txt - how to conserve battery power using laptop-mode. sony-laptop.txt diff --git a/Documentation/laptops/Makefile b/Documentation/laptops/Makefile deleted file mode 100644 index 0abe44f68965..000000000000 --- a/Documentation/laptops/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# List of programs to build -hostprogs-y := dslm - -# Tell kbuild to always build the programs -always := $(hostprogs-y) diff --git a/Documentation/laptops/dslm.c b/Documentation/laptops/dslm.c deleted file mode 100644 index d5dd2d4b04d8..000000000000 --- a/Documentation/laptops/dslm.c +++ /dev/null @@ -1,166 +0,0 @@ -/* - * dslm.c - * Simple Disk Sleep Monitor - * by Bartek Kania - * Licensed under the GPL - */ -#include <unistd.h> -#include <stdlib.h> -#include <stdio.h> -#include <fcntl.h> -#include <errno.h> -#include <time.h> -#include <string.h> -#include <signal.h> -#include <sys/ioctl.h> -#include <linux/hdreg.h> - -#ifdef DEBUG -#define D(x) x -#else -#define D(x) -#endif - -int endit = 0; - -/* Check if the disk is in powersave-mode - * Most of the code is stolen from hdparm. - * 1 = active, 0 = standby/sleep, -1 = unknown */ -static int check_powermode(int fd) -{ - unsigned char args[4] = {WIN_CHECKPOWERMODE1,0,0,0}; - int state; - - if (ioctl(fd, HDIO_DRIVE_CMD, &args) - && (args[0] = WIN_CHECKPOWERMODE2) /* try again with 0x98 */ - && ioctl(fd, HDIO_DRIVE_CMD, &args)) { - if (errno != EIO || args[0] != 0 || args[1] != 0) { - state = -1; /* "unknown"; */ - } else - state = 0; /* "sleeping"; */ - } else { - state = (args[2] == 255) ? 1 : 0; - } - D(printf(" drive state is: %d\n", state)); - - return state; -} - -static char *state_name(int i) -{ - if (i == -1) return "unknown"; - if (i == 0) return "sleeping"; - if (i == 1) return "active"; - - return "internal error"; -} - -static char *myctime(time_t time) -{ - char *ts = ctime(&time); - ts[strlen(ts) - 1] = 0; - - return ts; -} - -static void measure(int fd) -{ - time_t start_time; - int last_state; - time_t last_time; - int curr_state; - time_t curr_time = 0; - time_t time_diff; - time_t active_time = 0; - time_t sleep_time = 0; - time_t unknown_time = 0; - time_t total_time = 0; - int changes = 0; - float tmp; - - printf("Starting measurements\n"); - - last_state = check_powermode(fd); - start_time = last_time = time(0); - printf(" System is in state %s\n\n", state_name(last_state)); - - while(!endit) { - sleep(1); - curr_state = check_powermode(fd); - - if (curr_state != last_state || endit) { - changes++; - curr_time = time(0); - time_diff = curr_time - last_time; - - if (last_state == 1) active_time += time_diff; - else if (last_state == 0) sleep_time += time_diff; - else unknown_time += time_diff; - - last_state = curr_state; - last_time = curr_time; - - printf("%s: State-change to %s\n", myctime(curr_time), - state_name(curr_state)); - } - } - changes--; /* Compensate for SIGINT */ - - total_time = time(0) - start_time; - printf("\nTotal running time: %lus\n", curr_time - start_time); - printf(" State changed %d times\n", changes); - - tmp = (float)sleep_time / (float)total_time * 100; - printf(" Time in sleep state: %lus (%.2f%%)\n", sleep_time, tmp); - tmp = (float)active_time / (float)total_time * 100; - printf(" Time in active state: %lus (%.2f%%)\n", active_time, tmp); - tmp = (float)unknown_time / (float)total_time * 100; - printf(" Time in unknown state: %lus (%.2f%%)\n", unknown_time, tmp); -} - -static void ender(int s) -{ - endit = 1; -} - -static void usage(void) -{ - puts("usage: dslm [-w <time>] <disk>"); - exit(0); -} - -int main(int argc, char **argv) -{ - int fd; - char *disk = 0; - int settle_time = 60; - - /* Parse the simple command-line */ - if (argc == 2) - disk = argv[1]; - else if (argc == 4) { - settle_time = atoi(argv[2]); - disk = argv[3]; - } else - usage(); - - if (!(fd = open(disk, O_RDONLY|O_NONBLOCK))) { - printf("Can't open %s, because: %s\n", disk, strerror(errno)); - exit(-1); - } - - if (settle_time) { - printf("Waiting %d seconds for the system to settle down to " - "'normal'\n", settle_time); - sleep(settle_time); - } else - puts("Not waiting for system to settle down"); - - signal(SIGINT, ender); - - measure(fd); - - close(fd); - - return 0; -} diff --git a/Documentation/laptops/laptop-mode.txt b/Documentation/laptops/laptop-mode.txt index 4ebbfc3f1c6e..19276f5d195c 100644 --- a/Documentation/laptops/laptop-mode.txt +++ b/Documentation/laptops/laptop-mode.txt @@ -779,4 +779,4 @@ Monitoring tool --------------- Bartek Kania submitted this, it can be used to measure how much time your disk -spends spun up/down. See Documentation/laptops/dslm.c +spends spun up/down. See tools/laptop/dslm/dslm.c diff --git a/Documentation/mic/Makefile b/Documentation/mic/Makefile deleted file mode 100644 index a191d453badf..000000000000 --- a/Documentation/mic/Makefile +++ /dev/null @@ -1 +0,0 @@ -subdir-y := mpssd diff --git a/Documentation/mic/mpssd/.gitignore b/Documentation/mic/mpssd/.gitignore deleted file mode 100644 index 8b7c72f07c92..000000000000 --- a/Documentation/mic/mpssd/.gitignore +++ /dev/null @@ -1 +0,0 @@ -mpssd diff --git a/Documentation/mic/mpssd/Makefile b/Documentation/mic/mpssd/Makefile deleted file mode 100644 index 06871b0c08a6..000000000000 --- a/Documentation/mic/mpssd/Makefile +++ /dev/null @@ -1,21 +0,0 @@ -ifndef CROSS_COMPILE -# List of programs to build -hostprogs-$(CONFIG_X86_64) := mpssd - -mpssd-objs := mpssd.o sysfs.o - -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS += -I$(objtree)/usr/include -I$(srctree)/tools/include - -ifdef DEBUG -HOSTCFLAGS += -DDEBUG=$(DEBUG) -endif - -HOSTLOADLIBES_mpssd := -lpthread - -install: - install mpssd /usr/sbin/mpssd - install micctrl /usr/sbin/micctrl -endif diff --git a/Documentation/mic/mpssd/micctrl b/Documentation/mic/mpssd/micctrl deleted file mode 100755 index 8f2629b41c5f..000000000000 --- a/Documentation/mic/mpssd/micctrl +++ /dev/null @@ -1,173 +0,0 @@ -#!/bin/bash -# Intel MIC Platform Software Stack (MPSS) -# -# Copyright(c) 2013 Intel Corporation. -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License, version 2, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# The full GNU General Public License is included in this distribution in -# the file called "COPYING". -# -# Intel MIC User Space Tools. -# -# micctrl - Controls MIC boot/start/stop. -# -# chkconfig: 2345 95 05 -# description: start MPSS stack processing. -# -### BEGIN INIT INFO -# Provides: micctrl -### END INIT INFO - -# Source function library. -. /etc/init.d/functions - -sysfs="/sys/class/mic" - -_status() -{ - f=$sysfs/$1 - echo -e $1 state: "`cat $f/state`" shutdown_status: "`cat $f/shutdown_status`" -} - -status() -{ - if [ "`echo $1 | head -c3`" == "mic" ]; then - _status $1 - return $? - fi - for f in $sysfs/* - do - _status `basename $f` - RETVAL=$? - [ $RETVAL -ne 0 ] && return $RETVAL - done - return 0 -} - -_reset() -{ - f=$sysfs/$1 - echo reset > $f/state -} - -reset() -{ - if [ "`echo $1 | head -c3`" == "mic" ]; then - _reset $1 - return $? - fi - for f in $sysfs/* - do - _reset `basename $f` - RETVAL=$? - [ $RETVAL -ne 0 ] && return $RETVAL - done - return 0 -} - -_boot() -{ - f=$sysfs/$1 - echo "linux" > $f/bootmode - echo "mic/uos.img" > $f/firmware - echo "mic/$1.image" > $f/ramdisk - echo "boot" > $f/state -} - -boot() -{ - if [ "`echo $1 | head -c3`" == "mic" ]; then - _boot $1 - return $? - fi - for f in $sysfs/* - do - _boot `basename $f` - RETVAL=$? - [ $RETVAL -ne 0 ] && return $RETVAL - done - return 0 -} - -_shutdown() -{ - f=$sysfs/$1 - echo shutdown > $f/state -} - -shutdown() -{ - if [ "`echo $1 | head -c3`" == "mic" ]; then - _shutdown $1 - return $? - fi - for f in $sysfs/* - do - _shutdown `basename $f` - RETVAL=$? - [ $RETVAL -ne 0 ] && return $RETVAL - done - return 0 -} - -_wait() -{ - f=$sysfs/$1 - while [ "`cat $f/state`" != "offline" -a "`cat $f/state`" != "online" ] - do - sleep 1 - echo -e "Waiting for $1 to go offline" - done -} - -wait() -{ - if [ "`echo $1 | head -c3`" == "mic" ]; then - _wait $1 - return $? - fi - # Wait for the cards to go offline - for f in $sysfs/* - do - _wait `basename $f` - RETVAL=$? - [ $RETVAL -ne 0 ] && return $RETVAL - done - return 0 -} - -if [ ! -d "$sysfs" ]; then - echo -e $"Module unloaded " - exit 3 -fi - -case $1 in - -s) - status $2 - ;; - -r) - reset $2 - ;; - -b) - boot $2 - ;; - -S) - shutdown $2 - ;; - -w) - wait $2 - ;; - *) - echo $"Usage: $0 {-s (status) |-r (reset) |-b (boot) |-S (shutdown) |-w (wait)}" - exit 2 -esac - -exit $? diff --git a/Documentation/mic/mpssd/mpss b/Documentation/mic/mpssd/mpss deleted file mode 100755 index 5fcf9fa4b082..000000000000 --- a/Documentation/mic/mpssd/mpss +++ /dev/null @@ -1,200 +0,0 @@ -#!/bin/bash -# Intel MIC Platform Software Stack (MPSS) -# -# Copyright(c) 2013 Intel Corporation. -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License, version 2, as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# The full GNU General Public License is included in this distribution in -# the file called "COPYING". -# -# Intel MIC User Space Tools. -# -# mpss Start mpssd. -# -# chkconfig: 2345 95 05 -# description: start MPSS stack processing. -# -### BEGIN INIT INFO -# Provides: mpss -# Required-Start: -# Required-Stop: -# Short-Description: MPSS stack control -# Description: MPSS stack control -### END INIT INFO - -# Source function library. -. /etc/init.d/functions - -exec=/usr/sbin/mpssd -sysfs="/sys/class/mic" -mic_modules="mic_host mic_x100_dma scif vop" - -start() -{ - [ -x $exec ] || exit 5 - - if [ "`ps -e | awk '{print $4}' | grep mpssd | head -1`" = "mpssd" ]; then - echo -e $"MPSSD already running! " - success - echo - return 0 - fi - - echo -e $"Starting MPSS Stack" - echo -e $"Loading MIC drivers:" $mic_modules - - modprobe -a $mic_modules - RETVAL=$? - if [ $RETVAL -ne 0 ]; then - failure - echo - return $RETVAL - fi - - # Start the daemon - echo -n $"Starting MPSSD " - $exec - RETVAL=$? - if [ $RETVAL -ne 0 ]; then - failure - echo - return $RETVAL - fi - success - echo - - sleep 5 - - # Boot the cards - micctrl -b - - # Wait till ping works - for f in $sysfs/* - do - count=100 - ipaddr=`cat $f/cmdline` - ipaddr=${ipaddr#*address,} - ipaddr=`echo $ipaddr | cut -d, -f1 | cut -d\; -f1` - while [ $count -ge 0 ] - do - echo -e "Pinging "`basename $f`" " - ping -c 1 $ipaddr &> /dev/null - RETVAL=$? - if [ $RETVAL -eq 0 ]; then - success - break - fi - sleep 1 - count=`expr $count - 1` - done - [ $RETVAL -ne 0 ] && failure || success - echo - done - return $RETVAL -} - -stop() -{ - echo -e $"Shutting down MPSS Stack: " - - # Bail out if module is unloaded - if [ ! -d "$sysfs" ]; then - echo -n $"Module unloaded " - success - echo - return 0 - fi - - # Shut down the cards. - micctrl -S - - # Wait for the cards to go offline - for f in $sysfs/* - do - while [ "`cat $f/state`" != "ready" ] - do - sleep 1 - echo -e "Waiting for "`basename $f`" to become ready" - done - done - - # Display the status of the cards - micctrl -s - - # Kill MPSSD now - echo -n $"Killing MPSSD" - killall -9 mpssd 2>/dev/null - RETVAL=$? - [ $RETVAL -ne 0 ] && failure || success - echo - return $RETVAL -} - -restart() -{ - stop - sleep 5 - start -} - -status() -{ - micctrl -s - if [ "`ps -e | awk '{print $4}' | grep mpssd | head -n 1`" = "mpssd" ]; then - echo "mpssd is running" - else - echo "mpssd is stopped" - fi - return 0 -} - -unload() -{ - if [ ! -d "$sysfs" ]; then - echo -n $"No MIC_HOST Module: " - success - echo - return - fi - - stop - - sleep 5 - echo -n $"Removing MIC drivers:" $mic_modules - modprobe -r $mic_modules - RETVAL=$? - [ $RETVAL -ne 0 ] && failure || success - echo - return $RETVAL -} - -case $1 in - start) - start - ;; - stop) - stop - ;; - restart) - restart - ;; - status) - status - ;; - unload) - unload - ;; - *) - echo $"Usage: $0 {start|stop|restart|status|unload}" - exit 2 -esac - -exit $? diff --git a/Documentation/mic/mpssd/mpssd.c b/Documentation/mic/mpssd/mpssd.c deleted file mode 100644 index 49db1def1721..000000000000 --- a/Documentation/mic/mpssd/mpssd.c +++ /dev/null @@ -1,1826 +0,0 @@ -/* - * Intel MIC Platform Software Stack (MPSS) - * - * Copyright(c) 2013 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2, as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * The full GNU General Public License is included in this distribution in - * the file called "COPYING". - * - * Intel MIC User Space Tools. - */ - -#define _GNU_SOURCE - -#include <stdlib.h> -#include <fcntl.h> -#include <getopt.h> -#include <assert.h> -#include <unistd.h> -#include <stdbool.h> -#include <signal.h> -#include <poll.h> -#include <features.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/mman.h> -#include <sys/socket.h> -#include <linux/virtio_ring.h> -#include <linux/virtio_net.h> -#include <linux/virtio_console.h> -#include <linux/virtio_blk.h> -#include <linux/version.h> -#include "mpssd.h" -#include <linux/mic_ioctl.h> -#include <linux/mic_common.h> -#include <tools/endian.h> - -static void *init_mic(void *arg); - -static FILE *logfp; -static struct mic_info mic_list; - -#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) - -#define min_t(type, x, y) ({ \ - type __min1 = (x); \ - type __min2 = (y); \ - __min1 < __min2 ? __min1 : __min2; }) - -/* align addr on a size boundary - adjust address up/down if needed */ -#define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1))) -#define _ALIGN_UP(addr, size) _ALIGN_DOWN(addr + size - 1, size) - -/* align addr on a size boundary - adjust address up if needed */ -#define _ALIGN(addr, size) _ALIGN_UP(addr, size) - -/* to align the pointer to the (next) page boundary */ -#define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) - -#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x)) - -#define GSO_ENABLED 1 -#define MAX_GSO_SIZE (64 * 1024) -#define ETH_H_LEN 14 -#define MAX_NET_PKT_SIZE (_ALIGN_UP(MAX_GSO_SIZE + ETH_H_LEN, 64)) -#define MIC_DEVICE_PAGE_END 0x1000 - -#ifndef VIRTIO_NET_HDR_F_DATA_VALID -#define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */ -#endif - -static struct { - struct mic_device_desc dd; - struct mic_vqconfig vqconfig[2]; - __u32 host_features, guest_acknowledgements; - struct virtio_console_config cons_config; -} virtcons_dev_page = { - .dd = { - .type = VIRTIO_ID_CONSOLE, - .num_vq = ARRAY_SIZE(virtcons_dev_page.vqconfig), - .feature_len = sizeof(virtcons_dev_page.host_features), - .config_len = sizeof(virtcons_dev_page.cons_config), - }, - .vqconfig[0] = { - .num = htole16(MIC_VRING_ENTRIES), - }, - .vqconfig[1] = { - .num = htole16(MIC_VRING_ENTRIES), - }, -}; - -static struct { - struct mic_device_desc dd; - struct mic_vqconfig vqconfig[2]; - __u32 host_features, guest_acknowledgements; - struct virtio_net_config net_config; -} virtnet_dev_page = { - .dd = { - .type = VIRTIO_ID_NET, - .num_vq = ARRAY_SIZE(virtnet_dev_page.vqconfig), - .feature_len = sizeof(virtnet_dev_page.host_features), - .config_len = sizeof(virtnet_dev_page.net_config), - }, - .vqconfig[0] = { - .num = htole16(MIC_VRING_ENTRIES), - }, - .vqconfig[1] = { - .num = htole16(MIC_VRING_ENTRIES), - }, -#if GSO_ENABLED - .host_features = htole32( - 1 << VIRTIO_NET_F_CSUM | - 1 << VIRTIO_NET_F_GSO | - 1 << VIRTIO_NET_F_GUEST_TSO4 | - 1 << VIRTIO_NET_F_GUEST_TSO6 | - 1 << VIRTIO_NET_F_GUEST_ECN), -#else - .host_features = 0, -#endif -}; - -static const char *mic_config_dir = "/etc/mpss"; -static const char *virtblk_backend = "VIRTBLK_BACKEND"; -static struct { - struct mic_device_desc dd; - struct mic_vqconfig vqconfig[1]; - __u32 host_features, guest_acknowledgements; - struct virtio_blk_config blk_config; -} virtblk_dev_page = { - .dd = { - .type = VIRTIO_ID_BLOCK, - .num_vq = ARRAY_SIZE(virtblk_dev_page.vqconfig), - .feature_len = sizeof(virtblk_dev_page.host_features), - .config_len = sizeof(virtblk_dev_page.blk_config), - }, - .vqconfig[0] = { - .num = htole16(MIC_VRING_ENTRIES), - }, - .host_features = - htole32(1<<VIRTIO_BLK_F_SEG_MAX), - .blk_config = { - .seg_max = htole32(MIC_VRING_ENTRIES - 2), - .capacity = htole64(0), - } -}; - -static char *myname; - -static int -tap_configure(struct mic_info *mic, char *dev) -{ - pid_t pid; - char *ifargv[7]; - char ipaddr[IFNAMSIZ]; - int ret = 0; - - pid = fork(); - if (pid == 0) { - ifargv[0] = "ip"; - ifargv[1] = "link"; - ifargv[2] = "set"; - ifargv[3] = dev; - ifargv[4] = "up"; - ifargv[5] = NULL; - mpsslog("Configuring %s\n", dev); - ret = execvp("ip", ifargv); - if (ret < 0) { - mpsslog("%s execvp failed errno %s\n", - mic->name, strerror(errno)); - return ret; - } - } - if (pid < 0) { - mpsslog("%s fork failed errno %s\n", - mic->name, strerror(errno)); - return ret; - } - - ret = waitpid(pid, NULL, 0); - if (ret < 0) { - mpsslog("%s waitpid failed errno %s\n", - mic->name, strerror(errno)); - return ret; - } - - snprintf(ipaddr, IFNAMSIZ, "172.31.%d.254/24", mic->id + 1); - - pid = fork(); - if (pid == 0) { - ifargv[0] = "ip"; - ifargv[1] = "addr"; - ifargv[2] = "add"; - ifargv[3] = ipaddr; - ifargv[4] = "dev"; - ifargv[5] = dev; - ifargv[6] = NULL; - mpsslog("Configuring %s ipaddr %s\n", dev, ipaddr); - ret = execvp("ip", ifargv); - if (ret < 0) { - mpsslog("%s execvp failed errno %s\n", - mic->name, strerror(errno)); - return ret; - } - } - if (pid < 0) { - mpsslog("%s fork failed errno %s\n", - mic->name, strerror(errno)); - return ret; - } - - ret = waitpid(pid, NULL, 0); - if (ret < 0) { - mpsslog("%s waitpid failed errno %s\n", - mic->name, strerror(errno)); - return ret; - } - mpsslog("MIC name %s %s %d DONE!\n", - mic->name, __func__, __LINE__); - return 0; -} - -static int tun_alloc(struct mic_info *mic, char *dev) -{ - struct ifreq ifr; - int fd, err; -#if GSO_ENABLED - unsigned offload; -#endif - fd = open("/dev/net/tun", O_RDWR); - if (fd < 0) { - mpsslog("Could not open /dev/net/tun %s\n", strerror(errno)); - goto done; - } - - memset(&ifr, 0, sizeof(ifr)); - - ifr.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_VNET_HDR; - if (*dev) - strncpy(ifr.ifr_name, dev, IFNAMSIZ); - - err = ioctl(fd, TUNSETIFF, (void *)&ifr); - if (err < 0) { - mpsslog("%s %s %d TUNSETIFF failed %s\n", - mic->name, __func__, __LINE__, strerror(errno)); - close(fd); - return err; - } -#if GSO_ENABLED - offload = TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6 | TUN_F_TSO_ECN; - - err = ioctl(fd, TUNSETOFFLOAD, offload); - if (err < 0) { - mpsslog("%s %s %d TUNSETOFFLOAD failed %s\n", - mic->name, __func__, __LINE__, strerror(errno)); - close(fd); - return err; - } -#endif - strcpy(dev, ifr.ifr_name); - mpsslog("Created TAP %s\n", dev); -done: - return fd; -} - -#define NET_FD_VIRTIO_NET 0 -#define NET_FD_TUN 1 -#define MAX_NET_FD 2 - -static void set_dp(struct mic_info *mic, int type, void *dp) -{ - switch (type) { - case VIRTIO_ID_CONSOLE: - mic->mic_console.console_dp = dp; - return; - case VIRTIO_ID_NET: - mic->mic_net.net_dp = dp; - return; - case VIRTIO_ID_BLOCK: - mic->mic_virtblk.block_dp = dp; - return; - } - mpsslog("%s %s %d not found\n", mic->name, __func__, type); - assert(0); -} - -static void *get_dp(struct mic_info *mic, int type) -{ - switch (type) { - case VIRTIO_ID_CONSOLE: - return mic->mic_console.console_dp; - case VIRTIO_ID_NET: - return mic->mic_net.net_dp; - case VIRTIO_ID_BLOCK: - return mic->mic_virtblk.block_dp; - } - mpsslog("%s %s %d not found\n", mic->name, __func__, type); - assert(0); - return NULL; -} - -static struct mic_device_desc *get_device_desc(struct mic_info *mic, int type) -{ - struct mic_device_desc *d; - int i; - void *dp = get_dp(mic, type); - - for (i = sizeof(struct mic_bootparam); i < PAGE_SIZE; - i += mic_total_desc_size(d)) { - d = dp + i; - - /* End of list */ - if (d->type == 0) - break; - - if (d->type == -1) - continue; - - mpsslog("%s %s d-> type %d d %p\n", - mic->name, __func__, d->type, d); - - if (d->type == (__u8)type) - return d; - } - mpsslog("%s %s %d not found\n", mic->name, __func__, type); - return NULL; -} - -/* See comments in vhost.c for explanation of next_desc() */ -static unsigned next_desc(struct vring_desc *desc) -{ - unsigned int next; - - if (!(le16toh(desc->flags) & VRING_DESC_F_NEXT)) - return -1U; - next = le16toh(desc->next); - return next; -} - -/* Sum up all the IOVEC length */ -static ssize_t -sum_iovec_len(struct mic_copy_desc *copy) -{ - ssize_t sum = 0; - unsigned int i; - - for (i = 0; i < copy->iovcnt; i++) - sum += copy->iov[i].iov_len; - return sum; -} - -static inline void verify_out_len(struct mic_info *mic, - struct mic_copy_desc *copy) -{ - if (copy->out_len != sum_iovec_len(copy)) { - mpsslog("%s %s %d BUG copy->out_len 0x%x len 0x%zx\n", - mic->name, __func__, __LINE__, - copy->out_len, sum_iovec_len(copy)); - assert(copy->out_len == sum_iovec_len(copy)); - } -} - -/* Display an iovec */ -static void -disp_iovec(struct mic_info *mic, struct mic_copy_desc *copy, - const char *s, int line) -{ - unsigned int i; - - for (i = 0; i < copy->iovcnt; i++) - mpsslog("%s %s %d copy->iov[%d] addr %p len 0x%zx\n", - mic->name, s, line, i, - copy->iov[i].iov_base, copy->iov[i].iov_len); -} - -static inline __u16 read_avail_idx(struct mic_vring *vr) -{ - return ACCESS_ONCE(vr->info->avail_idx); -} - -static inline void txrx_prepare(int type, bool tx, struct mic_vring *vr, - struct mic_copy_desc *copy, ssize_t len) -{ - copy->vr_idx = tx ? 0 : 1; - copy->update_used = true; - if (type == VIRTIO_ID_NET) - copy->iov[1].iov_len = len - sizeof(struct virtio_net_hdr); - else - copy->iov[0].iov_len = len; -} - -/* Central API which triggers the copies */ -static int -mic_virtio_copy(struct mic_info *mic, int fd, - struct mic_vring *vr, struct mic_copy_desc *copy) -{ - int ret; - - ret = ioctl(fd, MIC_VIRTIO_COPY_DESC, copy); - if (ret) { - mpsslog("%s %s %d errno %s ret %d\n", - mic->name, __func__, __LINE__, - strerror(errno), ret); - } - return ret; -} - -static inline unsigned _vring_size(unsigned int num, unsigned long align) -{ - return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (3 + num) - + align - 1) & ~(align - 1)) - + sizeof(__u16) * 3 + sizeof(struct vring_used_elem) * num; -} - -/* - * This initialization routine requires at least one - * vring i.e. vr0. vr1 is optional. - */ -static void * -init_vr(struct mic_info *mic, int fd, int type, - struct mic_vring *vr0, struct mic_vring *vr1, int num_vq) -{ - int vr_size; - char *va; - - vr_size = PAGE_ALIGN(_vring_size(MIC_VRING_ENTRIES, - MIC_VIRTIO_RING_ALIGN) + - sizeof(struct _mic_vring_info)); - va = mmap(NULL, MIC_DEVICE_PAGE_END + vr_size * num_vq, - PROT_READ, MAP_SHARED, fd, 0); - if (MAP_FAILED == va) { - mpsslog("%s %s %d mmap failed errno %s\n", - mic->name, __func__, __LINE__, - strerror(errno)); - goto done; - } - set_dp(mic, type, va); - vr0->va = (struct mic_vring *)&va[MIC_DEVICE_PAGE_END]; - vr0->info = vr0->va + - _vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN); - vring_init(&vr0->vr, - MIC_VRING_ENTRIES, vr0->va, MIC_VIRTIO_RING_ALIGN); - mpsslog("%s %s vr0 %p vr0->info %p vr_size 0x%x vring 0x%x ", - __func__, mic->name, vr0->va, vr0->info, vr_size, - _vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN)); - mpsslog("magic 0x%x expected 0x%x\n", - le32toh(vr0->info->magic), MIC_MAGIC + type); - assert(le32toh(vr0->info->magic) == MIC_MAGIC + type); - if (vr1) { - vr1->va = (struct mic_vring *) - &va[MIC_DEVICE_PAGE_END + vr_size]; - vr1->info = vr1->va + _vring_size(MIC_VRING_ENTRIES, - MIC_VIRTIO_RING_ALIGN); - vring_init(&vr1->vr, - MIC_VRING_ENTRIES, vr1->va, MIC_VIRTIO_RING_ALIGN); - mpsslog("%s %s vr1 %p vr1->info %p vr_size 0x%x vring 0x%x ", - __func__, mic->name, vr1->va, vr1->info, vr_size, - _vring_size(MIC_VRING_ENTRIES, MIC_VIRTIO_RING_ALIGN)); - mpsslog("magic 0x%x expected 0x%x\n", - le32toh(vr1->info->magic), MIC_MAGIC + type + 1); - assert(le32toh(vr1->info->magic) == MIC_MAGIC + type + 1); - } -done: - return va; -} - -static int -wait_for_card_driver(struct mic_info *mic, int fd, int type) -{ - struct pollfd pollfd; - int err; - struct mic_device_desc *desc = get_device_desc(mic, type); - __u8 prev_status; - - if (!desc) - return -ENODEV; - prev_status = desc->status; - pollfd.fd = fd; - mpsslog("%s %s Waiting .... desc-> type %d status 0x%x\n", - mic->name, __func__, type, desc->status); - - while (1) { - pollfd.events = POLLIN; - pollfd.revents = 0; - err = poll(&pollfd, 1, -1); - if (err < 0) { - mpsslog("%s %s poll failed %s\n", - mic->name, __func__, strerror(errno)); - continue; - } - - if (pollfd.revents) { - if (desc->status != prev_status) { - mpsslog("%s %s Waiting... desc-> type %d " - "status 0x%x\n", - mic->name, __func__, type, - desc->status); - prev_status = desc->status; - } - if (desc->status & VIRTIO_CONFIG_S_DRIVER_OK) { - mpsslog("%s %s poll.revents %d\n", - mic->name, __func__, pollfd.revents); - mpsslog("%s %s desc-> type %d status 0x%x\n", - mic->name, __func__, type, - desc->status); - break; - } - } - } - return 0; -} - -/* Spin till we have some descriptors */ -static void -spin_for_descriptors(struct mic_info *mic, struct mic_vring *vr) -{ - __u16 avail_idx = read_avail_idx(vr); - - while (avail_idx == le16toh(ACCESS_ONCE(vr->vr.avail->idx))) { -#ifdef DEBUG - mpsslog("%s %s waiting for desc avail %d info_avail %d\n", - mic->name, __func__, - le16toh(vr->vr.avail->idx), vr->info->avail_idx); -#endif - sched_yield(); - } -} - -static void * -virtio_net(void *arg) -{ - static __u8 vnet_hdr[2][sizeof(struct virtio_net_hdr)]; - static __u8 vnet_buf[2][MAX_NET_PKT_SIZE] __attribute__ ((aligned(64))); - struct iovec vnet_iov[2][2] = { - { { .iov_base = vnet_hdr[0], .iov_len = sizeof(vnet_hdr[0]) }, - { .iov_base = vnet_buf[0], .iov_len = sizeof(vnet_buf[0]) } }, - { { .iov_base = vnet_hdr[1], .iov_len = sizeof(vnet_hdr[1]) }, - { .iov_base = vnet_buf[1], .iov_len = sizeof(vnet_buf[1]) } }, - }; - struct iovec *iov0 = vnet_iov[0], *iov1 = vnet_iov[1]; - struct mic_info *mic = (struct mic_info *)arg; - char if_name[IFNAMSIZ]; - struct pollfd net_poll[MAX_NET_FD]; - struct mic_vring tx_vr, rx_vr; - struct mic_copy_desc copy; - struct mic_device_desc *desc; - int err; - - snprintf(if_name, IFNAMSIZ, "mic%d", mic->id); - mic->mic_net.tap_fd = tun_alloc(mic, if_name); - if (mic->mic_net.tap_fd < 0) - goto done; - - if (tap_configure(mic, if_name)) - goto done; - mpsslog("MIC name %s id %d\n", mic->name, mic->id); - - net_poll[NET_FD_VIRTIO_NET].fd = mic->mic_net.virtio_net_fd; - net_poll[NET_FD_VIRTIO_NET].events = POLLIN; - net_poll[NET_FD_TUN].fd = mic->mic_net.tap_fd; - net_poll[NET_FD_TUN].events = POLLIN; - - if (MAP_FAILED == init_vr(mic, mic->mic_net.virtio_net_fd, - VIRTIO_ID_NET, &tx_vr, &rx_vr, - virtnet_dev_page.dd.num_vq)) { - mpsslog("%s init_vr failed %s\n", - mic->name, strerror(errno)); - goto done; - } - - copy.iovcnt = 2; - desc = get_device_desc(mic, VIRTIO_ID_NET); - - while (1) { - ssize_t len; - - net_poll[NET_FD_VIRTIO_NET].revents = 0; - net_poll[NET_FD_TUN].revents = 0; - - /* Start polling for data from tap and virtio net */ - err = poll(net_poll, 2, -1); - if (err < 0) { - mpsslog("%s poll failed %s\n", - __func__, strerror(errno)); - continue; - } - if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK)) { - err = wait_for_card_driver(mic, - mic->mic_net.virtio_net_fd, - VIRTIO_ID_NET); - if (err) { - mpsslog("%s %s %d Exiting...\n", - mic->name, __func__, __LINE__); - break; - } - } - /* - * Check if there is data to be read from TUN and write to - * virtio net fd if there is. - */ - if (net_poll[NET_FD_TUN].revents & POLLIN) { - copy.iov = iov0; - len = readv(net_poll[NET_FD_TUN].fd, - copy.iov, copy.iovcnt); - if (len > 0) { - struct virtio_net_hdr *hdr - = (struct virtio_net_hdr *)vnet_hdr[0]; - - /* Disable checksums on the card since we are on - a reliable PCIe link */ - hdr->flags |= VIRTIO_NET_HDR_F_DATA_VALID; -#ifdef DEBUG - mpsslog("%s %s %d hdr->flags 0x%x ", mic->name, - __func__, __LINE__, hdr->flags); - mpsslog("copy.out_len %d hdr->gso_type 0x%x\n", - copy.out_len, hdr->gso_type); -#endif -#ifdef DEBUG - disp_iovec(mic, copy, __func__, __LINE__); - mpsslog("%s %s %d read from tap 0x%lx\n", - mic->name, __func__, __LINE__, - len); -#endif - spin_for_descriptors(mic, &tx_vr); - txrx_prepare(VIRTIO_ID_NET, 1, &tx_vr, ©, - len); - - err = mic_virtio_copy(mic, - mic->mic_net.virtio_net_fd, &tx_vr, - ©); - if (err < 0) { - mpsslog("%s %s %d mic_virtio_copy %s\n", - mic->name, __func__, __LINE__, - strerror(errno)); - } - if (!err) - verify_out_len(mic, ©); -#ifdef DEBUG - disp_iovec(mic, copy, __func__, __LINE__); - mpsslog("%s %s %d wrote to net 0x%lx\n", - mic->name, __func__, __LINE__, - sum_iovec_len(©)); -#endif - /* Reinitialize IOV for next run */ - iov0[1].iov_len = MAX_NET_PKT_SIZE; - } else if (len < 0) { - disp_iovec(mic, ©, __func__, __LINE__); - mpsslog("%s %s %d read failed %s ", mic->name, - __func__, __LINE__, strerror(errno)); - mpsslog("cnt %d sum %zd\n", - copy.iovcnt, sum_iovec_len(©)); - } - } - - /* - * Check if there is data to be read from virtio net and - * write to TUN if there is. - */ - if (net_poll[NET_FD_VIRTIO_NET].revents & POLLIN) { - while (rx_vr.info->avail_idx != - le16toh(rx_vr.vr.avail->idx)) { - copy.iov = iov1; - txrx_prepare(VIRTIO_ID_NET, 0, &rx_vr, ©, - MAX_NET_PKT_SIZE - + sizeof(struct virtio_net_hdr)); - - err = mic_virtio_copy(mic, - mic->mic_net.virtio_net_fd, &rx_vr, - ©); - if (!err) { -#ifdef DEBUG - struct virtio_net_hdr *hdr - = (struct virtio_net_hdr *) - vnet_hdr[1]; - - mpsslog("%s %s %d hdr->flags 0x%x, ", - mic->name, __func__, __LINE__, - hdr->flags); - mpsslog("out_len %d gso_type 0x%x\n", - copy.out_len, - hdr->gso_type); -#endif - /* Set the correct output iov_len */ - iov1[1].iov_len = copy.out_len - - sizeof(struct virtio_net_hdr); - verify_out_len(mic, ©); -#ifdef DEBUG - disp_iovec(mic, copy, __func__, - __LINE__); - mpsslog("%s %s %d ", - mic->name, __func__, __LINE__); - mpsslog("read from net 0x%lx\n", - sum_iovec_len(copy)); -#endif - len = writev(net_poll[NET_FD_TUN].fd, - copy.iov, copy.iovcnt); - if (len != sum_iovec_len(©)) { - mpsslog("Tun write failed %s ", - strerror(errno)); - mpsslog("len 0x%zx ", len); - mpsslog("read_len 0x%zx\n", - sum_iovec_len(©)); - } else { -#ifdef DEBUG - disp_iovec(mic, ©, __func__, - __LINE__); - mpsslog("%s %s %d ", - mic->name, __func__, - __LINE__); - mpsslog("wrote to tap 0x%lx\n", - len); -#endif - } - } else { - mpsslog("%s %s %d mic_virtio_copy %s\n", - mic->name, __func__, __LINE__, - strerror(errno)); - break; - } - } - } - if (net_poll[NET_FD_VIRTIO_NET].revents & POLLERR) - mpsslog("%s: %s: POLLERR\n", __func__, mic->name); - } -done: - pthread_exit(NULL); -} - -/* virtio_console */ -#define VIRTIO_CONSOLE_FD 0 -#define MONITOR_FD (VIRTIO_CONSOLE_FD + 1) -#define MAX_CONSOLE_FD (MONITOR_FD + 1) /* must be the last one + 1 */ -#define MAX_BUFFER_SIZE PAGE_SIZE - -static void * -virtio_console(void *arg) -{ - static __u8 vcons_buf[2][PAGE_SIZE]; - struct iovec vcons_iov[2] = { - { .iov_base = vcons_buf[0], .iov_len = sizeof(vcons_buf[0]) }, - { .iov_base = vcons_buf[1], .iov_len = sizeof(vcons_buf[1]) }, - }; - struct iovec *iov0 = &vcons_iov[0], *iov1 = &vcons_iov[1]; - struct mic_info *mic = (struct mic_info *)arg; - int err; - struct pollfd console_poll[MAX_CONSOLE_FD]; - int pty_fd; - char *pts_name; - ssize_t len; - struct mic_vring tx_vr, rx_vr; - struct mic_copy_desc copy; - struct mic_device_desc *desc; - - pty_fd = posix_openpt(O_RDWR); - if (pty_fd < 0) { - mpsslog("can't open a pseudoterminal master device: %s\n", - strerror(errno)); - goto _return; - } - pts_name = ptsname(pty_fd); - if (pts_name == NULL) { - mpsslog("can't get pts name\n"); - goto _close_pty; - } - printf("%s console message goes to %s\n", mic->name, pts_name); - mpsslog("%s console message goes to %s\n", mic->name, pts_name); - err = grantpt(pty_fd); - if (err < 0) { - mpsslog("can't grant access: %s %s\n", - pts_name, strerror(errno)); - goto _close_pty; - } - err = unlockpt(pty_fd); - if (err < 0) { - mpsslog("can't unlock a pseudoterminal: %s %s\n", - pts_name, strerror(errno)); - goto _close_pty; - } - console_poll[MONITOR_FD].fd = pty_fd; - console_poll[MONITOR_FD].events = POLLIN; - - console_poll[VIRTIO_CONSOLE_FD].fd = mic->mic_console.virtio_console_fd; - console_poll[VIRTIO_CONSOLE_FD].events = POLLIN; - - if (MAP_FAILED == init_vr(mic, mic->mic_console.virtio_console_fd, - VIRTIO_ID_CONSOLE, &tx_vr, &rx_vr, - virtcons_dev_page.dd.num_vq)) { - mpsslog("%s init_vr failed %s\n", - mic->name, strerror(errno)); - goto _close_pty; - } - - copy.iovcnt = 1; - desc = get_device_desc(mic, VIRTIO_ID_CONSOLE); - - for (;;) { - console_poll[MONITOR_FD].revents = 0; - console_poll[VIRTIO_CONSOLE_FD].revents = 0; - err = poll(console_poll, MAX_CONSOLE_FD, -1); - if (err < 0) { - mpsslog("%s %d: poll failed: %s\n", __func__, __LINE__, - strerror(errno)); - continue; - } - if (!(desc->status & VIRTIO_CONFIG_S_DRIVER_OK)) { - err = wait_for_card_driver(mic, - mic->mic_console.virtio_console_fd, - VIRTIO_ID_CONSOLE); - if (err) { - mpsslog("%s %s %d Exiting...\n", - mic->name, __func__, __LINE__); - break; - } - } - - if (console_poll[MONITOR_FD].revents & POLLIN) { - copy.iov = iov0; - len = readv(pty_fd, copy.iov, copy.iovcnt); - if (len > 0) { -#ifdef DEBUG - disp_iovec(mic, copy, __func__, __LINE__); - mpsslog("%s %s %d read from tap 0x%lx\n", - mic->name, __func__, __LINE__, - len); -#endif - spin_for_descriptors(mic, &tx_vr); - txrx_prepare(VIRTIO_ID_CONSOLE, 1, &tx_vr, - ©, len); - - err = mic_virtio_copy(mic, - mic->mic_console.virtio_console_fd, - &tx_vr, ©); - if (err < 0) { - mpsslog("%s %s %d mic_virtio_copy %s\n", - mic->name, __func__, __LINE__, - strerror(errno)); - } - if (!err) - verify_out_len(mic, ©); -#ifdef DEBUG - disp_iovec(mic, copy, __func__, __LINE__); - mpsslog("%s %s %d wrote to net 0x%lx\n", - mic->name, __func__, __LINE__, - sum_iovec_len(copy)); -#endif - /* Reinitialize IOV for next run */ - iov0->iov_len = PAGE_SIZE; - } else if (len < 0) { - disp_iovec(mic, ©, __func__, __LINE__); - mpsslog("%s %s %d read failed %s ", - mic->name, __func__, __LINE__, - strerror(errno)); - mpsslog("cnt %d sum %zd\n", - copy.iovcnt, sum_iovec_len(©)); - } - } - - if (console_poll[VIRTIO_CONSOLE_FD].revents & POLLIN) { - while (rx_vr.info->avail_idx != - le16toh(rx_vr.vr.avail->idx)) { - copy.iov = iov1; - txrx_prepare(VIRTIO_ID_CONSOLE, 0, &rx_vr, - ©, PAGE_SIZE); - - err = mic_virtio_copy(mic, - mic->mic_console.virtio_console_fd, - &rx_vr, ©); - if (!err) { - /* Set the correct output iov_len */ - iov1->iov_len = copy.out_len; - verify_out_len(mic, ©); -#ifdef DEBUG - disp_iovec(mic, copy, __func__, - __LINE__); - mpsslog("%s %s %d ", - mic->name, __func__, __LINE__); - mpsslog("read from net 0x%lx\n", - sum_iovec_len(copy)); -#endif - len = writev(pty_fd, - copy.iov, copy.iovcnt); - if (len != sum_iovec_len(©)) { - mpsslog("Tun write failed %s ", - strerror(errno)); - mpsslog("len 0x%zx ", len); - mpsslog("read_len 0x%zx\n", - sum_iovec_len(©)); - } else { -#ifdef DEBUG - disp_iovec(mic, copy, __func__, - __LINE__); - mpsslog("%s %s %d ", - mic->name, __func__, - __LINE__); - mpsslog("wrote to tap 0x%lx\n", - len); -#endif - } - } else { - mpsslog("%s %s %d mic_virtio_copy %s\n", - mic->name, __func__, __LINE__, - strerror(errno)); - break; - } - } - } - if (console_poll[NET_FD_VIRTIO_NET].revents & POLLERR) - mpsslog("%s: %s: POLLERR\n", __func__, mic->name); - } -_close_pty: - close(pty_fd); -_return: - pthread_exit(NULL); -} - -static void -add_virtio_device(struct mic_info *mic, struct mic_device_desc *dd) -{ - char path[PATH_MAX]; - int fd, err; - - snprintf(path, PATH_MAX, "/dev/vop_virtio%d", mic->id); - fd = open(path, O_RDWR); - if (fd < 0) { - mpsslog("Could not open %s %s\n", path, strerror(errno)); - return; - } - - err = ioctl(fd, MIC_VIRTIO_ADD_DEVICE, dd); - if (err < 0) { - mpsslog("Could not add %d %s\n", dd->type, strerror(errno)); - close(fd); - return; - } - switch (dd->type) { - case VIRTIO_ID_NET: - mic->mic_net.virtio_net_fd = fd; - mpsslog("Added VIRTIO_ID_NET for %s\n", mic->name); - break; - case VIRTIO_ID_CONSOLE: - mic->mic_console.virtio_console_fd = fd; - mpsslog("Added VIRTIO_ID_CONSOLE for %s\n", mic->name); - break; - case VIRTIO_ID_BLOCK: - mic->mic_virtblk.virtio_block_fd = fd; - mpsslog("Added VIRTIO_ID_BLOCK for %s\n", mic->name); - break; - } -} - -static bool -set_backend_file(struct mic_info *mic) -{ - FILE *config; - char buff[PATH_MAX], *line, *evv, *p; - - snprintf(buff, PATH_MAX, "%s/mpssd%03d.conf", mic_config_dir, mic->id); - config = fopen(buff, "r"); - if (config == NULL) - return false; - do { /* look for "virtblk_backend=XXXX" */ - line = fgets(buff, PATH_MAX, config); - if (line == NULL) - break; - if (*line == '#') - continue; - p = strchr(line, '\n'); - if (p) - *p = '\0'; - } while (strncmp(line, virtblk_backend, strlen(virtblk_backend)) != 0); - fclose(config); - if (line == NULL) - return false; - evv = strchr(line, '='); - if (evv == NULL) - return false; - mic->mic_virtblk.backend_file = malloc(strlen(evv) + 1); - if (mic->mic_virtblk.backend_file == NULL) { - mpsslog("%s %d can't allocate memory\n", mic->name, mic->id); - return false; - } - strcpy(mic->mic_virtblk.backend_file, evv + 1); - return true; -} - -#define SECTOR_SIZE 512 -static bool -set_backend_size(struct mic_info *mic) -{ - mic->mic_virtblk.backend_size = lseek(mic->mic_virtblk.backend, 0, - SEEK_END); - if (mic->mic_virtblk.backend_size < 0) { - mpsslog("%s: can't seek: %s\n", - mic->name, mic->mic_virtblk.backend_file); - return false; - } - virtblk_dev_page.blk_config.capacity = - mic->mic_virtblk.backend_size / SECTOR_SIZE; - if ((mic->mic_virtblk.backend_size % SECTOR_SIZE) != 0) - virtblk_dev_page.blk_config.capacity++; - - virtblk_dev_page.blk_config.capacity = - htole64(virtblk_dev_page.blk_config.capacity); - - return true; -} - -static bool -open_backend(struct mic_info *mic) -{ - if (!set_backend_file(mic)) - goto _error_exit; - mic->mic_virtblk.backend = open(mic->mic_virtblk.backend_file, O_RDWR); - if (mic->mic_virtblk.backend < 0) { - mpsslog("%s: can't open: %s\n", mic->name, - mic->mic_virtblk.backend_file); - goto _error_free; - } - if (!set_backend_size(mic)) - goto _error_close; - mic->mic_virtblk.backend_addr = mmap(NULL, - mic->mic_virtblk.backend_size, - PROT_READ|PROT_WRITE, MAP_SHARED, - mic->mic_virtblk.backend, 0L); - if (mic->mic_virtblk.backend_addr == MAP_FAILED) { - mpsslog("%s: can't map: %s %s\n", - mic->name, mic->mic_virtblk.backend_file, - strerror(errno)); - goto _error_close; - } - return true; - - _error_close: - close(mic->mic_virtblk.backend); - _error_free: - free(mic->mic_virtblk.backend_file); - _error_exit: - return false; -} - -static void -close_backend(struct mic_info *mic) -{ - munmap(mic->mic_virtblk.backend_addr, mic->mic_virtblk.backend_size); - close(mic->mic_virtblk.backend); - free(mic->mic_virtblk.backend_file); -} - -static bool -start_virtblk(struct mic_info *mic, struct mic_vring *vring) -{ - if (((unsigned long)&virtblk_dev_page.blk_config % 8) != 0) { - mpsslog("%s: blk_config is not 8 byte aligned.\n", - mic->name); - return false; - } - add_virtio_device(mic, &virtblk_dev_page.dd); - if (MAP_FAILED == init_vr(mic, mic->mic_virtblk.virtio_block_fd, - VIRTIO_ID_BLOCK, vring, NULL, - virtblk_dev_page.dd.num_vq)) { - mpsslog("%s init_vr failed %s\n", - mic->name, strerror(errno)); - return false; - } - return true; -} - -static void -stop_virtblk(struct mic_info *mic) -{ - int vr_size, ret; - - vr_size = PAGE_ALIGN(_vring_size(MIC_VRING_ENTRIES, - MIC_VIRTIO_RING_ALIGN) + - sizeof(struct _mic_vring_info)); - ret = munmap(mic->mic_virtblk.block_dp, - MIC_DEVICE_PAGE_END + vr_size * virtblk_dev_page.dd.num_vq); - if (ret < 0) - mpsslog("%s munmap errno %d\n", mic->name, errno); - close(mic->mic_virtblk.virtio_block_fd); -} - -static __u8 -header_error_check(struct vring_desc *desc) -{ - if (le32toh(desc->len) != sizeof(struct virtio_blk_outhdr)) { - mpsslog("%s() %d: length is not sizeof(virtio_blk_outhd)\n", - __func__, __LINE__); - return -EIO; - } - if (!(le16toh(desc->flags) & VRING_DESC_F_NEXT)) { - mpsslog("%s() %d: alone\n", - __func__, __LINE__); - return -EIO; - } - if (le16toh(desc->flags) & VRING_DESC_F_WRITE) { - mpsslog("%s() %d: not read\n", - __func__, __LINE__); - return -EIO; - } - return 0; -} - -static int -read_header(int fd, struct virtio_blk_outhdr *hdr, __u32 desc_idx) -{ - struct iovec iovec; - struct mic_copy_desc copy; - - iovec.iov_len = sizeof(*hdr); - iovec.iov_base = hdr; - copy.iov = &iovec; - copy.iovcnt = 1; - copy.vr_idx = 0; /* only one vring on virtio_block */ - copy.update_used = false; /* do not update used index */ - return ioctl(fd, MIC_VIRTIO_COPY_DESC, ©); -} - -static int -transfer_blocks(int fd, struct iovec *iovec, __u32 iovcnt) -{ - struct mic_copy_desc copy; - - copy.iov = iovec; - copy.iovcnt = iovcnt; - copy.vr_idx = 0; /* only one vring on virtio_block */ - copy.update_used = false; /* do not update used index */ - return ioctl(fd, MIC_VIRTIO_COPY_DESC, ©); -} - -static __u8 -status_error_check(struct vring_desc *desc) -{ - if (le32toh(desc->len) != sizeof(__u8)) { - mpsslog("%s() %d: length is not sizeof(status)\n", - __func__, __LINE__); - return -EIO; - } - return 0; -} - -static int -write_status(int fd, __u8 *status) -{ - struct iovec iovec; - struct mic_copy_desc copy; - - iovec.iov_base = status; - iovec.iov_len = sizeof(*status); - copy.iov = &iovec; - copy.iovcnt = 1; - copy.vr_idx = 0; /* only one vring on virtio_block */ - copy.update_used = true; /* Update used index */ - return ioctl(fd, MIC_VIRTIO_COPY_DESC, ©); -} - -#ifndef VIRTIO_BLK_T_GET_ID -#define VIRTIO_BLK_T_GET_ID 8 -#endif - -static void * -virtio_block(void *arg) -{ - struct mic_info *mic = (struct mic_info *)arg; - int ret; - struct pollfd block_poll; - struct mic_vring vring; - __u16 avail_idx; - __u32 desc_idx; - struct vring_desc *desc; - struct iovec *iovec, *piov; - __u8 status; - __u32 buffer_desc_idx; - struct virtio_blk_outhdr hdr; - void *fos; - - for (;;) { /* forever */ - if (!open_backend(mic)) { /* No virtblk */ - for (mic->mic_virtblk.signaled = 0; - !mic->mic_virtblk.signaled;) - sleep(1); - continue; - } - - /* backend file is specified. */ - if (!start_virtblk(mic, &vring)) - goto _close_backend; - iovec = malloc(sizeof(*iovec) * - le32toh(virtblk_dev_page.blk_config.seg_max)); - if (!iovec) { - mpsslog("%s: can't alloc iovec: %s\n", - mic->name, strerror(ENOMEM)); - goto _stop_virtblk; - } - - block_poll.fd = mic->mic_virtblk.virtio_block_fd; - block_poll.events = POLLIN; - for (mic->mic_virtblk.signaled = 0; - !mic->mic_virtblk.signaled;) { - block_poll.revents = 0; - /* timeout in 1 sec to see signaled */ - ret = poll(&block_poll, 1, 1000); - if (ret < 0) { - mpsslog("%s %d: poll failed: %s\n", - __func__, __LINE__, - strerror(errno)); - continue; - } - - if (!(block_poll.revents & POLLIN)) { -#ifdef DEBUG - mpsslog("%s %d: block_poll.revents=0x%x\n", - __func__, __LINE__, block_poll.revents); -#endif - continue; - } - - /* POLLIN */ - while (vring.info->avail_idx != - le16toh(vring.vr.avail->idx)) { - /* read header element */ - avail_idx = - vring.info->avail_idx & - (vring.vr.num - 1); - desc_idx = le16toh( - vring.vr.avail->ring[avail_idx]); - desc = &vring.vr.desc[desc_idx]; -#ifdef DEBUG - mpsslog("%s() %d: avail_idx=%d ", - __func__, __LINE__, - vring.info->avail_idx); - mpsslog("vring.vr.num=%d desc=%p\n", - vring.vr.num, desc); -#endif - status = header_error_check(desc); - ret = read_header( - mic->mic_virtblk.virtio_block_fd, - &hdr, desc_idx); - if (ret < 0) { - mpsslog("%s() %d %s: ret=%d %s\n", - __func__, __LINE__, - mic->name, ret, - strerror(errno)); - break; - } - /* buffer element */ - piov = iovec; - status = 0; - fos = mic->mic_virtblk.backend_addr + - (hdr.sector * SECTOR_SIZE); - buffer_desc_idx = next_desc(desc); - desc_idx = buffer_desc_idx; - for (desc = &vring.vr.desc[buffer_desc_idx]; - desc->flags & VRING_DESC_F_NEXT; - desc_idx = next_desc(desc), - desc = &vring.vr.desc[desc_idx]) { - piov->iov_len = desc->len; - piov->iov_base = fos; - piov++; - fos += desc->len; - } - /* Returning NULLs for VIRTIO_BLK_T_GET_ID. */ - if (hdr.type & ~(VIRTIO_BLK_T_OUT | - VIRTIO_BLK_T_GET_ID)) { - /* - VIRTIO_BLK_T_IN - does not do - anything. Probably for documenting. - VIRTIO_BLK_T_SCSI_CMD - for - virtio_scsi. - VIRTIO_BLK_T_FLUSH - turned off in - config space. - VIRTIO_BLK_T_BARRIER - defined but not - used in anywhere. - */ - mpsslog("%s() %d: type %x ", - __func__, __LINE__, - hdr.type); - mpsslog("is not supported\n"); - status = -ENOTSUP; - - } else { - ret = transfer_blocks( - mic->mic_virtblk.virtio_block_fd, - iovec, - piov - iovec); - if (ret < 0 && - status != 0) - status = ret; - } - /* write status and update used pointer */ - if (status != 0) - status = status_error_check(desc); - ret = write_status( - mic->mic_virtblk.virtio_block_fd, - &status); -#ifdef DEBUG - mpsslog("%s() %d: write status=%d on desc=%p\n", - __func__, __LINE__, - status, desc); -#endif - } - } - free(iovec); -_stop_virtblk: - stop_virtblk(mic); -_close_backend: - close_backend(mic); - } /* forever */ - - pthread_exit(NULL); -} - -static void -reset(struct mic_info *mic) -{ -#define RESET_TIMEOUT 120 - int i = RESET_TIMEOUT; - setsysfs(mic->name, "state", "reset"); - while (i) { - char *state; - state = readsysfs(mic->name, "state"); - if (!state) - goto retry; - mpsslog("%s: %s %d state %s\n", - mic->name, __func__, __LINE__, state); - - if (!strcmp(state, "ready")) { - free(state); - break; - } - free(state); -retry: - sleep(1); - i--; - } -} - -static int -get_mic_shutdown_status(struct mic_info *mic, char *shutdown_status) -{ - if (!strcmp(shutdown_status, "nop")) - return MIC_NOP; - if (!strcmp(shutdown_status, "crashed")) - return MIC_CRASHED; - if (!strcmp(shutdown_status, "halted")) - return MIC_HALTED; - if (!strcmp(shutdown_status, "poweroff")) - return MIC_POWER_OFF; - if (!strcmp(shutdown_status, "restart")) - return MIC_RESTART; - mpsslog("%s: BUG invalid status %s\n", mic->name, shutdown_status); - /* Invalid state */ - assert(0); -}; - -static int get_mic_state(struct mic_info *mic) -{ - char *state = NULL; - enum mic_states mic_state; - - while (!state) { - state = readsysfs(mic->name, "state"); - sleep(1); - } - mpsslog("%s: %s %d state %s\n", - mic->name, __func__, __LINE__, state); - - if (!strcmp(state, "ready")) { - mic_state = MIC_READY; - } else if (!strcmp(state, "booting")) { - mic_state = MIC_BOOTING; - } else if (!strcmp(state, "online")) { - mic_state = MIC_ONLINE; - } else if (!strcmp(state, "shutting_down")) { - mic_state = MIC_SHUTTING_DOWN; - } else if (!strcmp(state, "reset_failed")) { - mic_state = MIC_RESET_FAILED; - } else if (!strcmp(state, "resetting")) { - mic_state = MIC_RESETTING; - } else { - mpsslog("%s: BUG invalid state %s\n", mic->name, state); - assert(0); - } - - free(state); - return mic_state; -}; - -static void mic_handle_shutdown(struct mic_info *mic) -{ -#define SHUTDOWN_TIMEOUT 60 - int i = SHUTDOWN_TIMEOUT; - char *shutdown_status; - while (i) { - shutdown_status = readsysfs(mic->name, "shutdown_status"); - if (!shutdown_status) { - sleep(1); - continue; - } - mpsslog("%s: %s %d shutdown_status %s\n", - mic->name, __func__, __LINE__, shutdown_status); - switch (get_mic_shutdown_status(mic, shutdown_status)) { - case MIC_RESTART: - mic->restart = 1; - case MIC_HALTED: - case MIC_POWER_OFF: - case MIC_CRASHED: - free(shutdown_status); - goto reset; - default: - break; - } - free(shutdown_status); - sleep(1); - i--; - } -reset: - if (!i) - mpsslog("%s: %s %d timing out waiting for shutdown_status %s\n", - mic->name, __func__, __LINE__, shutdown_status); - reset(mic); -} - -static int open_state_fd(struct mic_info *mic) -{ - char pathname[PATH_MAX]; - int fd; - - snprintf(pathname, PATH_MAX - 1, "%s/%s/%s", - MICSYSFSDIR, mic->name, "state"); - - fd = open(pathname, O_RDONLY); - if (fd < 0) - mpsslog("%s: opening file %s failed %s\n", - mic->name, pathname, strerror(errno)); - return fd; -} - -static int block_till_state_change(int fd, struct mic_info *mic) -{ - struct pollfd ufds[1]; - char value[PAGE_SIZE]; - int ret; - - ufds[0].fd = fd; - ufds[0].events = POLLERR | POLLPRI; - ret = poll(ufds, 1, -1); - if (ret < 0) { - mpsslog("%s: %s %d poll failed %s\n", - mic->name, __func__, __LINE__, strerror(errno)); - return ret; - } - - ret = lseek(fd, 0, SEEK_SET); - if (ret < 0) { - mpsslog("%s: %s %d Failed to seek to 0: %s\n", - mic->name, __func__, __LINE__, strerror(errno)); - return ret; - } - - ret = read(fd, value, sizeof(value)); - if (ret < 0) { - mpsslog("%s: %s %d Failed to read sysfs entry: %s\n", - mic->name, __func__, __LINE__, strerror(errno)); - return ret; - } - - return 0; -} - -static void * -mic_config(void *arg) -{ - struct mic_info *mic = (struct mic_info *)arg; - int fd, ret, stat = 0; - - fd = open_state_fd(mic); - if (fd < 0) { - mpsslog("%s: %s %d open state fd failed %s\n", - mic->name, __func__, __LINE__, strerror(errno)); - goto exit; - } - - do { - ret = block_till_state_change(fd, mic); - if (ret < 0) { - mpsslog("%s: %s %d block_till_state_change error %s\n", - mic->name, __func__, __LINE__, strerror(errno)); - goto close_exit; - } - - switch (get_mic_state(mic)) { - case MIC_SHUTTING_DOWN: - mic_handle_shutdown(mic); - break; - case MIC_READY: - case MIC_RESET_FAILED: - ret = kill(mic->pid, SIGTERM); - mpsslog("%s: %s %d kill pid %d ret %d\n", - mic->name, __func__, __LINE__, - mic->pid, ret); - if (!ret) { - ret = waitpid(mic->pid, &stat, - WIFSIGNALED(stat)); - mpsslog("%s: %s %d waitpid ret %d pid %d\n", - mic->name, __func__, __LINE__, - ret, mic->pid); - } - if (mic->boot_on_resume) { - setsysfs(mic->name, "state", "boot"); - mic->boot_on_resume = 0; - } - goto close_exit; - default: - break; - } - } while (1); - -close_exit: - close(fd); -exit: - init_mic(mic); - pthread_exit(NULL); -} - -static void -set_cmdline(struct mic_info *mic) -{ - char buffer[PATH_MAX]; - int len; - - len = snprintf(buffer, PATH_MAX, - "clocksource=tsc highres=off nohz=off "); - len += snprintf(buffer + len, PATH_MAX - len, - "cpufreq_on;corec6_off;pc3_off;pc6_off "); - len += snprintf(buffer + len, PATH_MAX - len, - "ifcfg=static;address,172.31.%d.1;netmask,255.255.255.0", - mic->id + 1); - - setsysfs(mic->name, "cmdline", buffer); - mpsslog("%s: Command line: \"%s\"\n", mic->name, buffer); - snprintf(buffer, PATH_MAX, "172.31.%d.1", mic->id + 1); - mpsslog("%s: IPADDR: \"%s\"\n", mic->name, buffer); -} - -static void -set_log_buf_info(struct mic_info *mic) -{ - int fd; - off_t len; - char system_map[] = "/lib/firmware/mic/System.map"; - char *map, *temp, log_buf[17] = {'\0'}; - - fd = open(system_map, O_RDONLY); - if (fd < 0) { - mpsslog("%s: Opening System.map failed: %d\n", - mic->name, errno); - return; - } - len = lseek(fd, 0, SEEK_END); - if (len < 0) { - mpsslog("%s: Reading System.map size failed: %d\n", - mic->name, errno); - close(fd); - return; - } - map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0); - if (map == MAP_FAILED) { - mpsslog("%s: mmap of System.map failed: %d\n", - mic->name, errno); - close(fd); - return; - } - temp = strstr(map, "__log_buf"); - if (!temp) { - mpsslog("%s: __log_buf not found: %d\n", mic->name, errno); - munmap(map, len); - close(fd); - return; - } - strncpy(log_buf, temp - 19, 16); - setsysfs(mic->name, "log_buf_addr", log_buf); - mpsslog("%s: log_buf_addr: %s\n", mic->name, log_buf); - temp = strstr(map, "log_buf_len"); - if (!temp) { - mpsslog("%s: log_buf_len not found: %d\n", mic->name, errno); - munmap(map, len); - close(fd); - return; - } - strncpy(log_buf, temp - 19, 16); - setsysfs(mic->name, "log_buf_len", log_buf); - mpsslog("%s: log_buf_len: %s\n", mic->name, log_buf); - munmap(map, len); - close(fd); -} - -static void -change_virtblk_backend(int x, siginfo_t *siginfo, void *p) -{ - struct mic_info *mic; - - for (mic = mic_list.next; mic != NULL; mic = mic->next) - mic->mic_virtblk.signaled = 1/* true */; -} - -static void -set_mic_boot_params(struct mic_info *mic) -{ - set_log_buf_info(mic); - set_cmdline(mic); -} - -static void * -init_mic(void *arg) -{ - struct mic_info *mic = (struct mic_info *)arg; - struct sigaction ignore = { - .sa_flags = 0, - .sa_handler = SIG_IGN - }; - struct sigaction act = { - .sa_flags = SA_SIGINFO, - .sa_sigaction = change_virtblk_backend, - }; - char buffer[PATH_MAX]; - int err, fd; - - /* - * Currently, one virtio block device is supported for each MIC card - * at a time. Any user (or test) can send a SIGUSR1 to the MIC daemon. - * The signal informs the virtio block backend about a change in the - * configuration file which specifies the virtio backend file name on - * the host. Virtio block backend then re-reads the configuration file - * and switches to the new block device. This signalling mechanism may - * not be required once multiple virtio block devices are supported by - * the MIC daemon. - */ - sigaction(SIGUSR1, &ignore, NULL); -retry: - fd = open_state_fd(mic); - if (fd < 0) { - mpsslog("%s: %s %d open state fd failed %s\n", - mic->name, __func__, __LINE__, strerror(errno)); - sleep(2); - goto retry; - } - - if (mic->restart) { - snprintf(buffer, PATH_MAX, "boot"); - setsysfs(mic->name, "state", buffer); - mpsslog("%s restarting mic %d\n", - mic->name, mic->restart); - mic->restart = 0; - } - - while (1) { - while (block_till_state_change(fd, mic)) { - mpsslog("%s: %s %d block_till_state_change error %s\n", - mic->name, __func__, __LINE__, strerror(errno)); - sleep(2); - continue; - } - - if (get_mic_state(mic) == MIC_BOOTING) - break; - } - - mic->pid = fork(); - switch (mic->pid) { - case 0: - add_virtio_device(mic, &virtcons_dev_page.dd); - add_virtio_device(mic, &virtnet_dev_page.dd); - err = pthread_create(&mic->mic_console.console_thread, NULL, - virtio_console, mic); - if (err) - mpsslog("%s virtcons pthread_create failed %s\n", - mic->name, strerror(err)); - err = pthread_create(&mic->mic_net.net_thread, NULL, - virtio_net, mic); - if (err) - mpsslog("%s virtnet pthread_create failed %s\n", - mic->name, strerror(err)); - err = pthread_create(&mic->mic_virtblk.block_thread, NULL, - virtio_block, mic); - if (err) - mpsslog("%s virtblk pthread_create failed %s\n", - mic->name, strerror(err)); - sigemptyset(&act.sa_mask); - err = sigaction(SIGUSR1, &act, NULL); - if (err) - mpsslog("%s sigaction SIGUSR1 failed %s\n", - mic->name, strerror(errno)); - while (1) - sleep(60); - case -1: - mpsslog("fork failed MIC name %s id %d errno %d\n", - mic->name, mic->id, errno); - break; - default: - err = pthread_create(&mic->config_thread, NULL, - mic_config, mic); - if (err) - mpsslog("%s mic_config pthread_create failed %s\n", - mic->name, strerror(err)); - } - - return NULL; -} - -static void -start_daemon(void) -{ - struct mic_info *mic; - int err; - - for (mic = mic_list.next; mic; mic = mic->next) { - set_mic_boot_params(mic); - err = pthread_create(&mic->init_thread, NULL, init_mic, mic); - if (err) - mpsslog("%s init_mic pthread_create failed %s\n", - mic->name, strerror(err)); - } - - while (1) - sleep(60); -} - -static int -init_mic_list(void) -{ - struct mic_info *mic = &mic_list; - struct dirent *file; - DIR *dp; - int cnt = 0; - - dp = opendir(MICSYSFSDIR); - if (!dp) - return 0; - - while ((file = readdir(dp)) != NULL) { - if (!strncmp(file->d_name, "mic", 3)) { - mic->next = calloc(1, sizeof(struct mic_info)); - if (mic->next) { - mic = mic->next; - mic->id = atoi(&file->d_name[3]); - mic->name = malloc(strlen(file->d_name) + 16); - if (mic->name) - strcpy(mic->name, file->d_name); - mpsslog("MIC name %s id %d\n", mic->name, - mic->id); - cnt++; - } - } - } - - closedir(dp); - return cnt; -} - -void -mpsslog(char *format, ...) -{ - va_list args; - char buffer[4096]; - char ts[52], *ts1; - time_t t; - - if (logfp == NULL) - return; - - va_start(args, format); - vsprintf(buffer, format, args); - va_end(args); - - time(&t); - ts1 = ctime_r(&t, ts); - ts1[strlen(ts1) - 1] = '\0'; - fprintf(logfp, "%s: %s", ts1, buffer); - - fflush(logfp); -} - -int -main(int argc, char *argv[]) -{ - int cnt; - pid_t pid; - - myname = argv[0]; - - logfp = fopen(LOGFILE_NAME, "a+"); - if (!logfp) { - fprintf(stderr, "cannot open logfile '%s'\n", LOGFILE_NAME); - exit(1); - } - pid = fork(); - switch (pid) { - case 0: - break; - case -1: - exit(2); - default: - exit(0); - } - - mpsslog("MIC Daemon start\n"); - - cnt = init_mic_list(); - if (cnt == 0) { - mpsslog("MIC module not loaded\n"); - exit(3); - } - mpsslog("MIC found %d devices\n", cnt); - - start_daemon(); - - exit(0); -} diff --git a/Documentation/mic/mpssd/mpssd.h b/Documentation/mic/mpssd/mpssd.h deleted file mode 100644 index 8bd64944aacc..000000000000 --- a/Documentation/mic/mpssd/mpssd.h +++ /dev/null @@ -1,103 +0,0 @@ -/* - * Intel MIC Platform Software Stack (MPSS) - * - * Copyright(c) 2013 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2, as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * The full GNU General Public License is included in this distribution in - * the file called "COPYING". - * - * Intel MIC User Space Tools. - */ -#ifndef _MPSSD_H_ -#define _MPSSD_H_ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include <unistd.h> -#include <dirent.h> -#include <libgen.h> -#include <pthread.h> -#include <stdarg.h> -#include <time.h> -#include <errno.h> -#include <sys/dir.h> -#include <sys/ioctl.h> -#include <sys/poll.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/mman.h> -#include <sys/utsname.h> -#include <sys/wait.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> -#include <pthread.h> -#include <signal.h> -#include <limits.h> -#include <syslog.h> -#include <getopt.h> -#include <net/if.h> -#include <linux/if_tun.h> -#include <linux/if_tun.h> -#include <linux/virtio_ids.h> - -#define MICSYSFSDIR "/sys/class/mic" -#define LOGFILE_NAME "/var/log/mpssd" -#define PAGE_SIZE 4096 - -struct mic_console_info { - pthread_t console_thread; - int virtio_console_fd; - void *console_dp; -}; - -struct mic_net_info { - pthread_t net_thread; - int virtio_net_fd; - int tap_fd; - void *net_dp; -}; - -struct mic_virtblk_info { - pthread_t block_thread; - int virtio_block_fd; - void *block_dp; - volatile sig_atomic_t signaled; - char *backend_file; - int backend; - void *backend_addr; - long backend_size; -}; - -struct mic_info { - int id; - char *name; - pthread_t config_thread; - pthread_t init_thread; - pid_t pid; - struct mic_console_info mic_console; - struct mic_net_info mic_net; - struct mic_virtblk_info mic_virtblk; - int restart; - int boot_on_resume; - struct mic_info *next; -}; - -__attribute__((format(printf, 1, 2))) -void mpsslog(char *format, ...); -char *readsysfs(char *dir, char *entry); -int setsysfs(char *dir, char *entry, char *value); -#endif diff --git a/Documentation/mic/mpssd/sysfs.c b/Documentation/mic/mpssd/sysfs.c deleted file mode 100644 index 8dd326936083..000000000000 --- a/Documentation/mic/mpssd/sysfs.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * Intel MIC Platform Software Stack (MPSS) - * - * Copyright(c) 2013 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2, as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * The full GNU General Public License is included in this distribution in - * the file called "COPYING". - * - * Intel MIC User Space Tools. - */ - -#include "mpssd.h" - -#define PAGE_SIZE 4096 - -char * -readsysfs(char *dir, char *entry) -{ - char filename[PATH_MAX]; - char value[PAGE_SIZE]; - char *string = NULL; - int fd; - int len; - - if (dir == NULL) - snprintf(filename, PATH_MAX, "%s/%s", MICSYSFSDIR, entry); - else - snprintf(filename, PATH_MAX, - "%s/%s/%s", MICSYSFSDIR, dir, entry); - - fd = open(filename, O_RDONLY); - if (fd < 0) { - mpsslog("Failed to open sysfs entry '%s': %s\n", - filename, strerror(errno)); - return NULL; - } - - len = read(fd, value, sizeof(value)); - if (len < 0) { - mpsslog("Failed to read sysfs entry '%s': %s\n", - filename, strerror(errno)); - goto readsys_ret; - } - if (len == 0) - goto readsys_ret; - - value[len - 1] = '\0'; - - string = malloc(strlen(value) + 1); - if (string) - strcpy(string, value); - -readsys_ret: - close(fd); - return string; -} - -int -setsysfs(char *dir, char *entry, char *value) -{ - char filename[PATH_MAX]; - char *oldvalue; - int fd, ret = 0; - - if (dir == NULL) - snprintf(filename, PATH_MAX, "%s/%s", MICSYSFSDIR, entry); - else - snprintf(filename, PATH_MAX, "%s/%s/%s", - MICSYSFSDIR, dir, entry); - - oldvalue = readsysfs(dir, entry); - - fd = open(filename, O_RDWR); - if (fd < 0) { - ret = errno; - mpsslog("Failed to open sysfs entry '%s': %s\n", - filename, strerror(errno)); - goto done; - } - - if (!oldvalue || strcmp(value, oldvalue)) { - if (write(fd, value, strlen(value)) < 0) { - ret = errno; - mpsslog("Failed to write new sysfs entry '%s': %s\n", - filename, strerror(errno)); - } - } - close(fd); -done: - if (oldvalue) - free(oldvalue); - return ret; -} diff --git a/Documentation/misc-devices/Makefile b/Documentation/misc-devices/Makefile deleted file mode 100644 index e2b7aa4c9e21..000000000000 --- a/Documentation/misc-devices/Makefile +++ /dev/null @@ -1 +0,0 @@ -subdir-y := mei diff --git a/Documentation/misc-devices/mei/.gitignore b/Documentation/misc-devices/mei/.gitignore deleted file mode 100644 index f356b81ca1ec..000000000000 --- a/Documentation/misc-devices/mei/.gitignore +++ /dev/null @@ -1 +0,0 @@ -mei-amt-version diff --git a/Documentation/misc-devices/mei/Makefile b/Documentation/misc-devices/mei/Makefile deleted file mode 100644 index d758047d1b6d..000000000000 --- a/Documentation/misc-devices/mei/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# List of programs to build -hostprogs-y := mei-amt-version -HOSTCFLAGS_mei-amt-version.o += -I$(objtree)/usr/include -# Tell kbuild to always build the programs -always := $(hostprogs-y) diff --git a/Documentation/misc-devices/mei/TODO b/Documentation/misc-devices/mei/TODO deleted file mode 100644 index 6b3625d3058c..000000000000 --- a/Documentation/misc-devices/mei/TODO +++ /dev/null @@ -1,2 +0,0 @@ -TODO: - - Cleanup and split the timer function diff --git a/Documentation/misc-devices/mei/mei-amt-version.c b/Documentation/misc-devices/mei/mei-amt-version.c deleted file mode 100644 index 57d0d871dcf7..000000000000 --- a/Documentation/misc-devices/mei/mei-amt-version.c +++ /dev/null @@ -1,479 +0,0 @@ -/****************************************************************************** - * Intel Management Engine Interface (Intel MEI) Linux driver - * Intel MEI Interface Header - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * Copyright(c) 2012 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called LICENSE.GPL. - * - * Contact Information: - * Intel Corporation. - * linux-mei@linux.intel.com - * http://www.intel.com - * - * BSD LICENSE - * - * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * * Neither the name Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *****************************************************************************/ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include <sys/ioctl.h> -#include <unistd.h> -#include <errno.h> -#include <stdint.h> -#include <stdbool.h> -#include <bits/wordsize.h> -#include <linux/mei.h> - -/***************************************************************************** - * Intel Management Engine Interface - *****************************************************************************/ - -#define mei_msg(_me, fmt, ARGS...) do { \ - if (_me->verbose) \ - fprintf(stderr, fmt, ##ARGS); \ -} while (0) - -#define mei_err(_me, fmt, ARGS...) do { \ - fprintf(stderr, "Error: " fmt, ##ARGS); \ -} while (0) - -struct mei { - uuid_le guid; - bool initialized; - bool verbose; - unsigned int buf_size; - unsigned char prot_ver; - int fd; -}; - -static void mei_deinit(struct mei *cl) -{ - if (cl->fd != -1) - close(cl->fd); - cl->fd = -1; - cl->buf_size = 0; - cl->prot_ver = 0; - cl->initialized = false; -} - -static bool mei_init(struct mei *me, const uuid_le *guid, - unsigned char req_protocol_version, bool verbose) -{ - int result; - struct mei_client *cl; - struct mei_connect_client_data data; - - me->verbose = verbose; - - me->fd = open("/dev/mei", O_RDWR); - if (me->fd == -1) { - mei_err(me, "Cannot establish a handle to the Intel MEI driver\n"); - goto err; - } - memcpy(&me->guid, guid, sizeof(*guid)); - memset(&data, 0, sizeof(data)); - me->initialized = true; - - memcpy(&data.in_client_uuid, &me->guid, sizeof(me->guid)); - result = ioctl(me->fd, IOCTL_MEI_CONNECT_CLIENT, &data); - if (result) { - mei_err(me, "IOCTL_MEI_CONNECT_CLIENT receive message. err=%d\n", result); - goto err; - } - cl = &data.out_client_properties; - mei_msg(me, "max_message_length %d\n", cl->max_msg_length); - mei_msg(me, "protocol_version %d\n", cl->protocol_version); - - if ((req_protocol_version > 0) && - (cl->protocol_version != req_protocol_version)) { - mei_err(me, "Intel MEI protocol version not supported\n"); - goto err; - } - - me->buf_size = cl->max_msg_length; - me->prot_ver = cl->protocol_version; - - return true; -err: - mei_deinit(me); - return false; -} - -static ssize_t mei_recv_msg(struct mei *me, unsigned char *buffer, - ssize_t len, unsigned long timeout) -{ - ssize_t rc; - - mei_msg(me, "call read length = %zd\n", len); - - rc = read(me->fd, buffer, len); - if (rc < 0) { - mei_err(me, "read failed with status %zd %s\n", - rc, strerror(errno)); - mei_deinit(me); - } else { - mei_msg(me, "read succeeded with result %zd\n", rc); - } - return rc; -} - -static ssize_t mei_send_msg(struct mei *me, const unsigned char *buffer, - ssize_t len, unsigned long timeout) -{ - struct timeval tv; - ssize_t written; - ssize_t rc; - fd_set set; - - tv.tv_sec = timeout / 1000; - tv.tv_usec = (timeout % 1000) * 1000000; - - mei_msg(me, "call write length = %zd\n", len); - - written = write(me->fd, buffer, len); - if (written < 0) { - rc = -errno; - mei_err(me, "write failed with status %zd %s\n", - written, strerror(errno)); - goto out; - } - - FD_ZERO(&set); - FD_SET(me->fd, &set); - rc = select(me->fd + 1 , &set, NULL, NULL, &tv); - if (rc > 0 && FD_ISSET(me->fd, &set)) { - mei_msg(me, "write success\n"); - } else if (rc == 0) { - mei_err(me, "write failed on timeout with status\n"); - goto out; - } else { /* rc < 0 */ - mei_err(me, "write failed on select with status %zd\n", rc); - goto out; - } - - rc = written; -out: - if (rc < 0) - mei_deinit(me); - - return rc; -} - -/*************************************************************************** - * Intel Advanced Management Technology ME Client - ***************************************************************************/ - -#define AMT_MAJOR_VERSION 1 -#define AMT_MINOR_VERSION 1 - -#define AMT_STATUS_SUCCESS 0x0 -#define AMT_STATUS_INTERNAL_ERROR 0x1 -#define AMT_STATUS_NOT_READY 0x2 -#define AMT_STATUS_INVALID_AMT_MODE 0x3 -#define AMT_STATUS_INVALID_MESSAGE_LENGTH 0x4 - -#define AMT_STATUS_HOST_IF_EMPTY_RESPONSE 0x4000 -#define AMT_STATUS_SDK_RESOURCES 0x1004 - - -#define AMT_BIOS_VERSION_LEN 65 -#define AMT_VERSIONS_NUMBER 50 -#define AMT_UNICODE_STRING_LEN 20 - -struct amt_unicode_string { - uint16_t length; - char string[AMT_UNICODE_STRING_LEN]; -} __attribute__((packed)); - -struct amt_version_type { - struct amt_unicode_string description; - struct amt_unicode_string version; -} __attribute__((packed)); - -struct amt_version { - uint8_t major; - uint8_t minor; -} __attribute__((packed)); - -struct amt_code_versions { - uint8_t bios[AMT_BIOS_VERSION_LEN]; - uint32_t count; - struct amt_version_type versions[AMT_VERSIONS_NUMBER]; -} __attribute__((packed)); - -/*************************************************************************** - * Intel Advanced Management Technology Host Interface - ***************************************************************************/ - -struct amt_host_if_msg_header { - struct amt_version version; - uint16_t _reserved; - uint32_t command; - uint32_t length; -} __attribute__((packed)); - -struct amt_host_if_resp_header { - struct amt_host_if_msg_header header; - uint32_t status; - unsigned char data[0]; -} __attribute__((packed)); - -const uuid_le MEI_IAMTHIF = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, \ - 0xac, 0xa8, 0x46, 0xe0, 0xff, 0x65, 0x81, 0x4c); - -#define AMT_HOST_IF_CODE_VERSIONS_REQUEST 0x0400001A -#define AMT_HOST_IF_CODE_VERSIONS_RESPONSE 0x0480001A - -const struct amt_host_if_msg_header CODE_VERSION_REQ = { - .version = {AMT_MAJOR_VERSION, AMT_MINOR_VERSION}, - ._reserved = 0, - .command = AMT_HOST_IF_CODE_VERSIONS_REQUEST, - .length = 0 -}; - - -struct amt_host_if { - struct mei mei_cl; - unsigned long send_timeout; - bool initialized; -}; - - -static bool amt_host_if_init(struct amt_host_if *acmd, - unsigned long send_timeout, bool verbose) -{ - acmd->send_timeout = (send_timeout) ? send_timeout : 20000; - acmd->initialized = mei_init(&acmd->mei_cl, &MEI_IAMTHIF, 0, verbose); - return acmd->initialized; -} - -static void amt_host_if_deinit(struct amt_host_if *acmd) -{ - mei_deinit(&acmd->mei_cl); - acmd->initialized = false; -} - -static uint32_t amt_verify_code_versions(const struct amt_host_if_resp_header *resp) -{ - uint32_t status = AMT_STATUS_SUCCESS; - struct amt_code_versions *code_ver; - size_t code_ver_len; - uint32_t ver_type_cnt; - uint32_t len; - uint32_t i; - - code_ver = (struct amt_code_versions *)resp->data; - /* length - sizeof(status) */ - code_ver_len = resp->header.length - sizeof(uint32_t); - ver_type_cnt = code_ver_len - - sizeof(code_ver->bios) - - sizeof(code_ver->count); - if (code_ver->count != ver_type_cnt / sizeof(struct amt_version_type)) { - status = AMT_STATUS_INTERNAL_ERROR; - goto out; - } - - for (i = 0; i < code_ver->count; i++) { - len = code_ver->versions[i].description.length; - - if (len > AMT_UNICODE_STRING_LEN) { - status = AMT_STATUS_INTERNAL_ERROR; - goto out; - } - - len = code_ver->versions[i].version.length; - if (code_ver->versions[i].version.string[len] != '\0' || - len != strlen(code_ver->versions[i].version.string)) { - status = AMT_STATUS_INTERNAL_ERROR; - goto out; - } - } -out: - return status; -} - -static uint32_t amt_verify_response_header(uint32_t command, - const struct amt_host_if_msg_header *resp_hdr, - uint32_t response_size) -{ - if (response_size < sizeof(struct amt_host_if_resp_header)) { - return AMT_STATUS_INTERNAL_ERROR; - } else if (response_size != (resp_hdr->length + - sizeof(struct amt_host_if_msg_header))) { - return AMT_STATUS_INTERNAL_ERROR; - } else if (resp_hdr->command != command) { - return AMT_STATUS_INTERNAL_ERROR; - } else if (resp_hdr->_reserved != 0) { - return AMT_STATUS_INTERNAL_ERROR; - } else if (resp_hdr->version.major != AMT_MAJOR_VERSION || - resp_hdr->version.minor < AMT_MINOR_VERSION) { - return AMT_STATUS_INTERNAL_ERROR; - } - return AMT_STATUS_SUCCESS; -} - -static uint32_t amt_host_if_call(struct amt_host_if *acmd, - const unsigned char *command, ssize_t command_sz, - uint8_t **read_buf, uint32_t rcmd, - unsigned int expected_sz) -{ - uint32_t in_buf_sz; - uint32_t out_buf_sz; - ssize_t written; - uint32_t status; - struct amt_host_if_resp_header *msg_hdr; - - in_buf_sz = acmd->mei_cl.buf_size; - *read_buf = (uint8_t *)malloc(sizeof(uint8_t) * in_buf_sz); - if (*read_buf == NULL) - return AMT_STATUS_SDK_RESOURCES; - memset(*read_buf, 0, in_buf_sz); - msg_hdr = (struct amt_host_if_resp_header *)*read_buf; - - written = mei_send_msg(&acmd->mei_cl, - command, command_sz, acmd->send_timeout); - if (written != command_sz) - return AMT_STATUS_INTERNAL_ERROR; - - out_buf_sz = mei_recv_msg(&acmd->mei_cl, *read_buf, in_buf_sz, 2000); - if (out_buf_sz <= 0) - return AMT_STATUS_HOST_IF_EMPTY_RESPONSE; - - status = msg_hdr->status; - if (status != AMT_STATUS_SUCCESS) - return status; - - status = amt_verify_response_header(rcmd, - &msg_hdr->header, out_buf_sz); - if (status != AMT_STATUS_SUCCESS) - return status; - - if (expected_sz && expected_sz != out_buf_sz) - return AMT_STATUS_INTERNAL_ERROR; - - return AMT_STATUS_SUCCESS; -} - - -static uint32_t amt_get_code_versions(struct amt_host_if *cmd, - struct amt_code_versions *versions) -{ - struct amt_host_if_resp_header *response = NULL; - uint32_t status; - - status = amt_host_if_call(cmd, - (const unsigned char *)&CODE_VERSION_REQ, - sizeof(CODE_VERSION_REQ), - (uint8_t **)&response, - AMT_HOST_IF_CODE_VERSIONS_RESPONSE, 0); - - if (status != AMT_STATUS_SUCCESS) - goto out; - - status = amt_verify_code_versions(response); - if (status != AMT_STATUS_SUCCESS) - goto out; - - memcpy(versions, response->data, sizeof(struct amt_code_versions)); -out: - if (response != NULL) - free(response); - - return status; -} - -/************************** end of amt_host_if_command ***********************/ -int main(int argc, char **argv) -{ - struct amt_code_versions ver; - struct amt_host_if acmd; - unsigned int i; - uint32_t status; - int ret; - bool verbose; - - verbose = (argc > 1 && strcmp(argv[1], "-v") == 0); - - if (!amt_host_if_init(&acmd, 5000, verbose)) { - ret = 1; - goto out; - } - - status = amt_get_code_versions(&acmd, &ver); - - amt_host_if_deinit(&acmd); - - switch (status) { - case AMT_STATUS_HOST_IF_EMPTY_RESPONSE: - printf("Intel AMT: DISABLED\n"); - ret = 0; - break; - case AMT_STATUS_SUCCESS: - printf("Intel AMT: ENABLED\n"); - for (i = 0; i < ver.count; i++) { - printf("%s:\t%s\n", ver.versions[i].description.string, - ver.versions[i].version.string); - } - ret = 0; - break; - default: - printf("An error has occurred\n"); - ret = 1; - break; - } - -out: - return ret; -} diff --git a/Documentation/networking/00-INDEX b/Documentation/networking/00-INDEX index a7697783ac4c..c6beb5f1637f 100644 --- a/Documentation/networking/00-INDEX +++ b/Documentation/networking/00-INDEX @@ -10,8 +10,6 @@ LICENSE.qlge - GPLv2 for QLogic Linux qlge NIC Driver LICENSE.qlcnic - GPLv2 for QLogic Linux qlcnic NIC Driver -Makefile - - Makefile for docsrc. PLIP.txt - PLIP: The Parallel Line Internet Protocol device driver README.ipw2100 diff --git a/Documentation/networking/Makefile b/Documentation/networking/Makefile deleted file mode 100644 index 4c5d7c485439..000000000000 --- a/Documentation/networking/Makefile +++ /dev/null @@ -1 +0,0 @@ -subdir-y := timestamping diff --git a/Documentation/networking/timestamping/.gitignore b/Documentation/networking/timestamping/.gitignore deleted file mode 100644 index 9e69e982fb38..000000000000 --- a/Documentation/networking/timestamping/.gitignore +++ /dev/null @@ -1,3 +0,0 @@ -timestamping -txtimestamp -hwtstamp_config diff --git a/Documentation/networking/timestamping/Makefile b/Documentation/networking/timestamping/Makefile deleted file mode 100644 index 8c20dfaa4d6e..000000000000 --- a/Documentation/networking/timestamping/Makefile +++ /dev/null @@ -1,14 +0,0 @@ -# To compile, from the source root -# -# make headers_install -# make M=documentation - -# List of programs to build -hostprogs-y := hwtstamp_config timestamping txtimestamp - -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS_timestamping.o += -I$(objtree)/usr/include -HOSTCFLAGS_txtimestamp.o += -I$(objtree)/usr/include -HOSTCFLAGS_hwtstamp_config.o += -I$(objtree)/usr/include diff --git a/Documentation/networking/timestamping/hwtstamp_config.c b/Documentation/networking/timestamping/hwtstamp_config.c deleted file mode 100644 index e8b685a7f15f..000000000000 --- a/Documentation/networking/timestamping/hwtstamp_config.c +++ /dev/null @@ -1,134 +0,0 @@ -/* Test program for SIOC{G,S}HWTSTAMP - * Copyright 2013 Solarflare Communications - * Author: Ben Hutchings - */ - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include <sys/socket.h> -#include <sys/ioctl.h> - -#include <linux/if.h> -#include <linux/net_tstamp.h> -#include <linux/sockios.h> - -static int -lookup_value(const char **names, int size, const char *name) -{ - int value; - - for (value = 0; value < size; value++) - if (names[value] && strcasecmp(names[value], name) == 0) - return value; - - return -1; -} - -static const char * -lookup_name(const char **names, int size, int value) -{ - return (value >= 0 && value < size) ? names[value] : NULL; -} - -static void list_names(FILE *f, const char **names, int size) -{ - int value; - - for (value = 0; value < size; value++) - if (names[value]) - fprintf(f, " %s\n", names[value]); -} - -static const char *tx_types[] = { -#define TX_TYPE(name) [HWTSTAMP_TX_ ## name] = #name - TX_TYPE(OFF), - TX_TYPE(ON), - TX_TYPE(ONESTEP_SYNC) -#undef TX_TYPE -}; -#define N_TX_TYPES ((int)(sizeof(tx_types) / sizeof(tx_types[0]))) - -static const char *rx_filters[] = { -#define RX_FILTER(name) [HWTSTAMP_FILTER_ ## name] = #name - RX_FILTER(NONE), - RX_FILTER(ALL), - RX_FILTER(SOME), - RX_FILTER(PTP_V1_L4_EVENT), - RX_FILTER(PTP_V1_L4_SYNC), - RX_FILTER(PTP_V1_L4_DELAY_REQ), - RX_FILTER(PTP_V2_L4_EVENT), - RX_FILTER(PTP_V2_L4_SYNC), - RX_FILTER(PTP_V2_L4_DELAY_REQ), - RX_FILTER(PTP_V2_L2_EVENT), - RX_FILTER(PTP_V2_L2_SYNC), - RX_FILTER(PTP_V2_L2_DELAY_REQ), - RX_FILTER(PTP_V2_EVENT), - RX_FILTER(PTP_V2_SYNC), - RX_FILTER(PTP_V2_DELAY_REQ), -#undef RX_FILTER -}; -#define N_RX_FILTERS ((int)(sizeof(rx_filters) / sizeof(rx_filters[0]))) - -static void usage(void) -{ - fputs("Usage: hwtstamp_config if_name [tx_type rx_filter]\n" - "tx_type is any of (case-insensitive):\n", - stderr); - list_names(stderr, tx_types, N_TX_TYPES); - fputs("rx_filter is any of (case-insensitive):\n", stderr); - list_names(stderr, rx_filters, N_RX_FILTERS); -} - -int main(int argc, char **argv) -{ - struct ifreq ifr; - struct hwtstamp_config config; - const char *name; - int sock; - - if ((argc != 2 && argc != 4) || (strlen(argv[1]) >= IFNAMSIZ)) { - usage(); - return 2; - } - - if (argc == 4) { - config.flags = 0; - config.tx_type = lookup_value(tx_types, N_TX_TYPES, argv[2]); - config.rx_filter = lookup_value(rx_filters, N_RX_FILTERS, argv[3]); - if (config.tx_type < 0 || config.rx_filter < 0) { - usage(); - return 2; - } - } - - sock = socket(AF_INET, SOCK_DGRAM, 0); - if (sock < 0) { - perror("socket"); - return 1; - } - - strcpy(ifr.ifr_name, argv[1]); - ifr.ifr_data = (caddr_t)&config; - - if (ioctl(sock, (argc == 2) ? SIOCGHWTSTAMP : SIOCSHWTSTAMP, &ifr)) { - perror("ioctl"); - return 1; - } - - printf("flags = %#x\n", config.flags); - name = lookup_name(tx_types, N_TX_TYPES, config.tx_type); - if (name) - printf("tx_type = %s\n", name); - else - printf("tx_type = %d\n", config.tx_type); - name = lookup_name(rx_filters, N_RX_FILTERS, config.rx_filter); - if (name) - printf("rx_filter = %s\n", name); - else - printf("rx_filter = %d\n", config.rx_filter); - - return 0; -} diff --git a/Documentation/networking/timestamping/timestamping.c b/Documentation/networking/timestamping/timestamping.c deleted file mode 100644 index 5cdfd743447b..000000000000 --- a/Documentation/networking/timestamping/timestamping.c +++ /dev/null @@ -1,528 +0,0 @@ -/* - * This program demonstrates how the various time stamping features in - * the Linux kernel work. It emulates the behavior of a PTP - * implementation in stand-alone master mode by sending PTPv1 Sync - * multicasts once every second. It looks for similar packets, but - * beyond that doesn't actually implement PTP. - * - * Outgoing packets are time stamped with SO_TIMESTAMPING with or - * without hardware support. - * - * Incoming packets are time stamped with SO_TIMESTAMPING with or - * without hardware support, SIOCGSTAMP[NS] (per-socket time stamp) and - * SO_TIMESTAMP[NS]. - * - * Copyright (C) 2009 Intel Corporation. - * Author: Patrick Ohly <patrick.ohly@intel.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <errno.h> -#include <string.h> - -#include <sys/time.h> -#include <sys/socket.h> -#include <sys/select.h> -#include <sys/ioctl.h> -#include <arpa/inet.h> -#include <net/if.h> - -#include <asm/types.h> -#include <linux/net_tstamp.h> -#include <linux/errqueue.h> - -#ifndef SO_TIMESTAMPING -# define SO_TIMESTAMPING 37 -# define SCM_TIMESTAMPING SO_TIMESTAMPING -#endif - -#ifndef SO_TIMESTAMPNS -# define SO_TIMESTAMPNS 35 -#endif - -#ifndef SIOCGSTAMPNS -# define SIOCGSTAMPNS 0x8907 -#endif - -#ifndef SIOCSHWTSTAMP -# define SIOCSHWTSTAMP 0x89b0 -#endif - -static void usage(const char *error) -{ - if (error) - printf("invalid option: %s\n", error); - printf("timestamping interface option*\n\n" - "Options:\n" - " IP_MULTICAST_LOOP - looping outgoing multicasts\n" - " SO_TIMESTAMP - normal software time stamping, ms resolution\n" - " SO_TIMESTAMPNS - more accurate software time stamping\n" - " SOF_TIMESTAMPING_TX_HARDWARE - hardware time stamping of outgoing packets\n" - " SOF_TIMESTAMPING_TX_SOFTWARE - software fallback for outgoing packets\n" - " SOF_TIMESTAMPING_RX_HARDWARE - hardware time stamping of incoming packets\n" - " SOF_TIMESTAMPING_RX_SOFTWARE - software fallback for incoming packets\n" - " SOF_TIMESTAMPING_SOFTWARE - request reporting of software time stamps\n" - " SOF_TIMESTAMPING_RAW_HARDWARE - request reporting of raw HW time stamps\n" - " SIOCGSTAMP - check last socket time stamp\n" - " SIOCGSTAMPNS - more accurate socket time stamp\n"); - exit(1); -} - -static void bail(const char *error) -{ - printf("%s: %s\n", error, strerror(errno)); - exit(1); -} - -static const unsigned char sync[] = { - 0x00, 0x01, 0x00, 0x01, - 0x5f, 0x44, 0x46, 0x4c, - 0x54, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x01, 0x01, - - /* fake uuid */ - 0x00, 0x01, - 0x02, 0x03, 0x04, 0x05, - - 0x00, 0x01, 0x00, 0x37, - 0x00, 0x00, 0x00, 0x08, - 0x00, 0x00, 0x00, 0x00, - 0x49, 0x05, 0xcd, 0x01, - 0x29, 0xb1, 0x8d, 0xb0, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x01, - - /* fake uuid */ - 0x00, 0x01, - 0x02, 0x03, 0x04, 0x05, - - 0x00, 0x00, 0x00, 0x37, - 0x00, 0x00, 0x00, 0x04, - 0x44, 0x46, 0x4c, 0x54, - 0x00, 0x00, 0xf0, 0x60, - 0x00, 0x01, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x01, - 0x00, 0x00, 0xf0, 0x60, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x04, - 0x44, 0x46, 0x4c, 0x54, - 0x00, 0x01, - - /* fake uuid */ - 0x00, 0x01, - 0x02, 0x03, 0x04, 0x05, - - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00 -}; - -static void sendpacket(int sock, struct sockaddr *addr, socklen_t addr_len) -{ - struct timeval now; - int res; - - res = sendto(sock, sync, sizeof(sync), 0, - addr, addr_len); - gettimeofday(&now, 0); - if (res < 0) - printf("%s: %s\n", "send", strerror(errno)); - else - printf("%ld.%06ld: sent %d bytes\n", - (long)now.tv_sec, (long)now.tv_usec, - res); -} - -static void printpacket(struct msghdr *msg, int res, - char *data, - int sock, int recvmsg_flags, - int siocgstamp, int siocgstampns) -{ - struct sockaddr_in *from_addr = (struct sockaddr_in *)msg->msg_name; - struct cmsghdr *cmsg; - struct timeval tv; - struct timespec ts; - struct timeval now; - - gettimeofday(&now, 0); - - printf("%ld.%06ld: received %s data, %d bytes from %s, %zu bytes control messages\n", - (long)now.tv_sec, (long)now.tv_usec, - (recvmsg_flags & MSG_ERRQUEUE) ? "error" : "regular", - res, - inet_ntoa(from_addr->sin_addr), - msg->msg_controllen); - for (cmsg = CMSG_FIRSTHDR(msg); - cmsg; - cmsg = CMSG_NXTHDR(msg, cmsg)) { - printf(" cmsg len %zu: ", cmsg->cmsg_len); - switch (cmsg->cmsg_level) { - case SOL_SOCKET: - printf("SOL_SOCKET "); - switch (cmsg->cmsg_type) { - case SO_TIMESTAMP: { - struct timeval *stamp = - (struct timeval *)CMSG_DATA(cmsg); - printf("SO_TIMESTAMP %ld.%06ld", - (long)stamp->tv_sec, - (long)stamp->tv_usec); - break; - } - case SO_TIMESTAMPNS: { - struct timespec *stamp = - (struct timespec *)CMSG_DATA(cmsg); - printf("SO_TIMESTAMPNS %ld.%09ld", - (long)stamp->tv_sec, - (long)stamp->tv_nsec); - break; - } - case SO_TIMESTAMPING: { - struct timespec *stamp = - (struct timespec *)CMSG_DATA(cmsg); - printf("SO_TIMESTAMPING "); - printf("SW %ld.%09ld ", - (long)stamp->tv_sec, - (long)stamp->tv_nsec); - stamp++; - /* skip deprecated HW transformed */ - stamp++; - printf("HW raw %ld.%09ld", - (long)stamp->tv_sec, - (long)stamp->tv_nsec); - break; - } - default: - printf("type %d", cmsg->cmsg_type); - break; - } - break; - case IPPROTO_IP: - printf("IPPROTO_IP "); - switch (cmsg->cmsg_type) { - case IP_RECVERR: { - struct sock_extended_err *err = - (struct sock_extended_err *)CMSG_DATA(cmsg); - printf("IP_RECVERR ee_errno '%s' ee_origin %d => %s", - strerror(err->ee_errno), - err->ee_origin, -#ifdef SO_EE_ORIGIN_TIMESTAMPING - err->ee_origin == SO_EE_ORIGIN_TIMESTAMPING ? - "bounced packet" : "unexpected origin" -#else - "probably SO_EE_ORIGIN_TIMESTAMPING" -#endif - ); - if (res < sizeof(sync)) - printf(" => truncated data?!"); - else if (!memcmp(sync, data + res - sizeof(sync), - sizeof(sync))) - printf(" => GOT OUR DATA BACK (HURRAY!)"); - break; - } - case IP_PKTINFO: { - struct in_pktinfo *pktinfo = - (struct in_pktinfo *)CMSG_DATA(cmsg); - printf("IP_PKTINFO interface index %u", - pktinfo->ipi_ifindex); - break; - } - default: - printf("type %d", cmsg->cmsg_type); - break; - } - break; - default: - printf("level %d type %d", - cmsg->cmsg_level, - cmsg->cmsg_type); - break; - } - printf("\n"); - } - - if (siocgstamp) { - if (ioctl(sock, SIOCGSTAMP, &tv)) - printf(" %s: %s\n", "SIOCGSTAMP", strerror(errno)); - else - printf("SIOCGSTAMP %ld.%06ld\n", - (long)tv.tv_sec, - (long)tv.tv_usec); - } - if (siocgstampns) { - if (ioctl(sock, SIOCGSTAMPNS, &ts)) - printf(" %s: %s\n", "SIOCGSTAMPNS", strerror(errno)); - else - printf("SIOCGSTAMPNS %ld.%09ld\n", - (long)ts.tv_sec, - (long)ts.tv_nsec); - } -} - -static void recvpacket(int sock, int recvmsg_flags, - int siocgstamp, int siocgstampns) -{ - char data[256]; - struct msghdr msg; - struct iovec entry; - struct sockaddr_in from_addr; - struct { - struct cmsghdr cm; - char control[512]; - } control; - int res; - - memset(&msg, 0, sizeof(msg)); - msg.msg_iov = &entry; - msg.msg_iovlen = 1; - entry.iov_base = data; - entry.iov_len = sizeof(data); - msg.msg_name = (caddr_t)&from_addr; - msg.msg_namelen = sizeof(from_addr); - msg.msg_control = &control; - msg.msg_controllen = sizeof(control); - - res = recvmsg(sock, &msg, recvmsg_flags|MSG_DONTWAIT); - if (res < 0) { - printf("%s %s: %s\n", - "recvmsg", - (recvmsg_flags & MSG_ERRQUEUE) ? "error" : "regular", - strerror(errno)); - } else { - printpacket(&msg, res, data, - sock, recvmsg_flags, - siocgstamp, siocgstampns); - } -} - -int main(int argc, char **argv) -{ - int so_timestamping_flags = 0; - int so_timestamp = 0; - int so_timestampns = 0; - int siocgstamp = 0; - int siocgstampns = 0; - int ip_multicast_loop = 0; - char *interface; - int i; - int enabled = 1; - int sock; - struct ifreq device; - struct ifreq hwtstamp; - struct hwtstamp_config hwconfig, hwconfig_requested; - struct sockaddr_in addr; - struct ip_mreq imr; - struct in_addr iaddr; - int val; - socklen_t len; - struct timeval next; - - if (argc < 2) - usage(0); - interface = argv[1]; - - for (i = 2; i < argc; i++) { - if (!strcasecmp(argv[i], "SO_TIMESTAMP")) - so_timestamp = 1; - else if (!strcasecmp(argv[i], "SO_TIMESTAMPNS")) - so_timestampns = 1; - else if (!strcasecmp(argv[i], "SIOCGSTAMP")) - siocgstamp = 1; - else if (!strcasecmp(argv[i], "SIOCGSTAMPNS")) - siocgstampns = 1; - else if (!strcasecmp(argv[i], "IP_MULTICAST_LOOP")) - ip_multicast_loop = 1; - else if (!strcasecmp(argv[i], "SOF_TIMESTAMPING_TX_HARDWARE")) - so_timestamping_flags |= SOF_TIMESTAMPING_TX_HARDWARE; - else if (!strcasecmp(argv[i], "SOF_TIMESTAMPING_TX_SOFTWARE")) - so_timestamping_flags |= SOF_TIMESTAMPING_TX_SOFTWARE; - else if (!strcasecmp(argv[i], "SOF_TIMESTAMPING_RX_HARDWARE")) - so_timestamping_flags |= SOF_TIMESTAMPING_RX_HARDWARE; - else if (!strcasecmp(argv[i], "SOF_TIMESTAMPING_RX_SOFTWARE")) - so_timestamping_flags |= SOF_TIMESTAMPING_RX_SOFTWARE; - else if (!strcasecmp(argv[i], "SOF_TIMESTAMPING_SOFTWARE")) - so_timestamping_flags |= SOF_TIMESTAMPING_SOFTWARE; - else if (!strcasecmp(argv[i], "SOF_TIMESTAMPING_RAW_HARDWARE")) - so_timestamping_flags |= SOF_TIMESTAMPING_RAW_HARDWARE; - else - usage(argv[i]); - } - - sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP); - if (sock < 0) - bail("socket"); - - memset(&device, 0, sizeof(device)); - strncpy(device.ifr_name, interface, sizeof(device.ifr_name)); - if (ioctl(sock, SIOCGIFADDR, &device) < 0) - bail("getting interface IP address"); - - memset(&hwtstamp, 0, sizeof(hwtstamp)); - strncpy(hwtstamp.ifr_name, interface, sizeof(hwtstamp.ifr_name)); - hwtstamp.ifr_data = (void *)&hwconfig; - memset(&hwconfig, 0, sizeof(hwconfig)); - hwconfig.tx_type = - (so_timestamping_flags & SOF_TIMESTAMPING_TX_HARDWARE) ? - HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF; - hwconfig.rx_filter = - (so_timestamping_flags & SOF_TIMESTAMPING_RX_HARDWARE) ? - HWTSTAMP_FILTER_PTP_V1_L4_SYNC : HWTSTAMP_FILTER_NONE; - hwconfig_requested = hwconfig; - if (ioctl(sock, SIOCSHWTSTAMP, &hwtstamp) < 0) { - if ((errno == EINVAL || errno == ENOTSUP) && - hwconfig_requested.tx_type == HWTSTAMP_TX_OFF && - hwconfig_requested.rx_filter == HWTSTAMP_FILTER_NONE) - printf("SIOCSHWTSTAMP: disabling hardware time stamping not possible\n"); - else - bail("SIOCSHWTSTAMP"); - } - printf("SIOCSHWTSTAMP: tx_type %d requested, got %d; rx_filter %d requested, got %d\n", - hwconfig_requested.tx_type, hwconfig.tx_type, - hwconfig_requested.rx_filter, hwconfig.rx_filter); - - /* bind to PTP port */ - addr.sin_family = AF_INET; - addr.sin_addr.s_addr = htonl(INADDR_ANY); - addr.sin_port = htons(319 /* PTP event port */); - if (bind(sock, - (struct sockaddr *)&addr, - sizeof(struct sockaddr_in)) < 0) - bail("bind"); - - /* set multicast group for outgoing packets */ - inet_aton("224.0.1.130", &iaddr); /* alternate PTP domain 1 */ - addr.sin_addr = iaddr; - imr.imr_multiaddr.s_addr = iaddr.s_addr; - imr.imr_interface.s_addr = - ((struct sockaddr_in *)&device.ifr_addr)->sin_addr.s_addr; - if (setsockopt(sock, IPPROTO_IP, IP_MULTICAST_IF, - &imr.imr_interface.s_addr, sizeof(struct in_addr)) < 0) - bail("set multicast"); - - /* join multicast group, loop our own packet */ - if (setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, - &imr, sizeof(struct ip_mreq)) < 0) - bail("join multicast group"); - - if (setsockopt(sock, IPPROTO_IP, IP_MULTICAST_LOOP, - &ip_multicast_loop, sizeof(enabled)) < 0) { - bail("loop multicast"); - } - - /* set socket options for time stamping */ - if (so_timestamp && - setsockopt(sock, SOL_SOCKET, SO_TIMESTAMP, - &enabled, sizeof(enabled)) < 0) - bail("setsockopt SO_TIMESTAMP"); - - if (so_timestampns && - setsockopt(sock, SOL_SOCKET, SO_TIMESTAMPNS, - &enabled, sizeof(enabled)) < 0) - bail("setsockopt SO_TIMESTAMPNS"); - - if (so_timestamping_flags && - setsockopt(sock, SOL_SOCKET, SO_TIMESTAMPING, - &so_timestamping_flags, - sizeof(so_timestamping_flags)) < 0) - bail("setsockopt SO_TIMESTAMPING"); - - /* request IP_PKTINFO for debugging purposes */ - if (setsockopt(sock, SOL_IP, IP_PKTINFO, - &enabled, sizeof(enabled)) < 0) - printf("%s: %s\n", "setsockopt IP_PKTINFO", strerror(errno)); - - /* verify socket options */ - len = sizeof(val); - if (getsockopt(sock, SOL_SOCKET, SO_TIMESTAMP, &val, &len) < 0) - printf("%s: %s\n", "getsockopt SO_TIMESTAMP", strerror(errno)); - else - printf("SO_TIMESTAMP %d\n", val); - - if (getsockopt(sock, SOL_SOCKET, SO_TIMESTAMPNS, &val, &len) < 0) - printf("%s: %s\n", "getsockopt SO_TIMESTAMPNS", - strerror(errno)); - else - printf("SO_TIMESTAMPNS %d\n", val); - - if (getsockopt(sock, SOL_SOCKET, SO_TIMESTAMPING, &val, &len) < 0) { - printf("%s: %s\n", "getsockopt SO_TIMESTAMPING", - strerror(errno)); - } else { - printf("SO_TIMESTAMPING %d\n", val); - if (val != so_timestamping_flags) - printf(" not the expected value %d\n", - so_timestamping_flags); - } - - /* send packets forever every five seconds */ - gettimeofday(&next, 0); - next.tv_sec = (next.tv_sec + 1) / 5 * 5; - next.tv_usec = 0; - while (1) { - struct timeval now; - struct timeval delta; - long delta_us; - int res; - fd_set readfs, errorfs; - - gettimeofday(&now, 0); - delta_us = (long)(next.tv_sec - now.tv_sec) * 1000000 + - (long)(next.tv_usec - now.tv_usec); - if (delta_us > 0) { - /* continue waiting for timeout or data */ - delta.tv_sec = delta_us / 1000000; - delta.tv_usec = delta_us % 1000000; - - FD_ZERO(&readfs); - FD_ZERO(&errorfs); - FD_SET(sock, &readfs); - FD_SET(sock, &errorfs); - printf("%ld.%06ld: select %ldus\n", - (long)now.tv_sec, (long)now.tv_usec, - delta_us); - res = select(sock + 1, &readfs, 0, &errorfs, &delta); - gettimeofday(&now, 0); - printf("%ld.%06ld: select returned: %d, %s\n", - (long)now.tv_sec, (long)now.tv_usec, - res, - res < 0 ? strerror(errno) : "success"); - if (res > 0) { - if (FD_ISSET(sock, &readfs)) - printf("ready for reading\n"); - if (FD_ISSET(sock, &errorfs)) - printf("has error\n"); - recvpacket(sock, 0, - siocgstamp, - siocgstampns); - recvpacket(sock, MSG_ERRQUEUE, - siocgstamp, - siocgstampns); - } - } else { - /* write one packet */ - sendpacket(sock, - (struct sockaddr *)&addr, - sizeof(addr)); - next.tv_sec += 5; - continue; - } - } - - return 0; -} diff --git a/Documentation/networking/timestamping/txtimestamp.c b/Documentation/networking/timestamping/txtimestamp.c deleted file mode 100644 index 5df07047ca86..000000000000 --- a/Documentation/networking/timestamping/txtimestamp.c +++ /dev/null @@ -1,549 +0,0 @@ -/* - * Copyright 2014 Google Inc. - * Author: willemb@google.com (Willem de Bruijn) - * - * Test software tx timestamping, including - * - * - SCHED, SND and ACK timestamps - * - RAW, UDP and TCP - * - IPv4 and IPv6 - * - various packet sizes (to test GSO and TSO) - * - * Consult the command line arguments for help on running - * the various testcases. - * - * This test requires a dummy TCP server. - * A simple `nc6 [-u] -l -p $DESTPORT` will do - * - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#define _GNU_SOURCE - -#include <arpa/inet.h> -#include <asm/types.h> -#include <error.h> -#include <errno.h> -#include <inttypes.h> -#include <linux/errqueue.h> -#include <linux/if_ether.h> -#include <linux/net_tstamp.h> -#include <netdb.h> -#include <net/if.h> -#include <netinet/in.h> -#include <netinet/ip.h> -#include <netinet/udp.h> -#include <netinet/tcp.h> -#include <netpacket/packet.h> -#include <poll.h> -#include <stdarg.h> -#include <stdbool.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/ioctl.h> -#include <sys/select.h> -#include <sys/socket.h> -#include <sys/time.h> -#include <sys/types.h> -#include <time.h> -#include <unistd.h> - -/* command line parameters */ -static int cfg_proto = SOCK_STREAM; -static int cfg_ipproto = IPPROTO_TCP; -static int cfg_num_pkts = 4; -static int do_ipv4 = 1; -static int do_ipv6 = 1; -static int cfg_payload_len = 10; -static bool cfg_show_payload; -static bool cfg_do_pktinfo; -static bool cfg_loop_nodata; -static uint16_t dest_port = 9000; - -static struct sockaddr_in daddr; -static struct sockaddr_in6 daddr6; -static struct timespec ts_prev; - -static void __print_timestamp(const char *name, struct timespec *cur, - uint32_t key, int payload_len) -{ - if (!(cur->tv_sec | cur->tv_nsec)) - return; - - fprintf(stderr, " %s: %lu s %lu us (seq=%u, len=%u)", - name, cur->tv_sec, cur->tv_nsec / 1000, - key, payload_len); - - if ((ts_prev.tv_sec | ts_prev.tv_nsec)) { - int64_t cur_ms, prev_ms; - - cur_ms = (long) cur->tv_sec * 1000 * 1000; - cur_ms += cur->tv_nsec / 1000; - - prev_ms = (long) ts_prev.tv_sec * 1000 * 1000; - prev_ms += ts_prev.tv_nsec / 1000; - - fprintf(stderr, " (%+" PRId64 " us)", cur_ms - prev_ms); - } - - ts_prev = *cur; - fprintf(stderr, "\n"); -} - -static void print_timestamp_usr(void) -{ - struct timespec ts; - struct timeval tv; /* avoid dependency on -lrt */ - - gettimeofday(&tv, NULL); - ts.tv_sec = tv.tv_sec; - ts.tv_nsec = tv.tv_usec * 1000; - - __print_timestamp(" USR", &ts, 0, 0); -} - -static void print_timestamp(struct scm_timestamping *tss, int tstype, - int tskey, int payload_len) -{ - const char *tsname; - - switch (tstype) { - case SCM_TSTAMP_SCHED: - tsname = " ENQ"; - break; - case SCM_TSTAMP_SND: - tsname = " SND"; - break; - case SCM_TSTAMP_ACK: - tsname = " ACK"; - break; - default: - error(1, 0, "unknown timestamp type: %u", - tstype); - } - __print_timestamp(tsname, &tss->ts[0], tskey, payload_len); -} - -/* TODO: convert to check_and_print payload once API is stable */ -static void print_payload(char *data, int len) -{ - int i; - - if (!len) - return; - - if (len > 70) - len = 70; - - fprintf(stderr, "payload: "); - for (i = 0; i < len; i++) - fprintf(stderr, "%02hhx ", data[i]); - fprintf(stderr, "\n"); -} - -static void print_pktinfo(int family, int ifindex, void *saddr, void *daddr) -{ - char sa[INET6_ADDRSTRLEN], da[INET6_ADDRSTRLEN]; - - fprintf(stderr, " pktinfo: ifindex=%u src=%s dst=%s\n", - ifindex, - saddr ? inet_ntop(family, saddr, sa, sizeof(sa)) : "unknown", - daddr ? inet_ntop(family, daddr, da, sizeof(da)) : "unknown"); -} - -static void __poll(int fd) -{ - struct pollfd pollfd; - int ret; - - memset(&pollfd, 0, sizeof(pollfd)); - pollfd.fd = fd; - ret = poll(&pollfd, 1, 100); - if (ret != 1) - error(1, errno, "poll"); -} - -static void __recv_errmsg_cmsg(struct msghdr *msg, int payload_len) -{ - struct sock_extended_err *serr = NULL; - struct scm_timestamping *tss = NULL; - struct cmsghdr *cm; - int batch = 0; - - for (cm = CMSG_FIRSTHDR(msg); - cm && cm->cmsg_len; - cm = CMSG_NXTHDR(msg, cm)) { - if (cm->cmsg_level == SOL_SOCKET && - cm->cmsg_type == SCM_TIMESTAMPING) { - tss = (void *) CMSG_DATA(cm); - } else if ((cm->cmsg_level == SOL_IP && - cm->cmsg_type == IP_RECVERR) || - (cm->cmsg_level == SOL_IPV6 && - cm->cmsg_type == IPV6_RECVERR)) { - serr = (void *) CMSG_DATA(cm); - if (serr->ee_errno != ENOMSG || - serr->ee_origin != SO_EE_ORIGIN_TIMESTAMPING) { - fprintf(stderr, "unknown ip error %d %d\n", - serr->ee_errno, - serr->ee_origin); - serr = NULL; - } - } else if (cm->cmsg_level == SOL_IP && - cm->cmsg_type == IP_PKTINFO) { - struct in_pktinfo *info = (void *) CMSG_DATA(cm); - print_pktinfo(AF_INET, info->ipi_ifindex, - &info->ipi_spec_dst, &info->ipi_addr); - } else if (cm->cmsg_level == SOL_IPV6 && - cm->cmsg_type == IPV6_PKTINFO) { - struct in6_pktinfo *info6 = (void *) CMSG_DATA(cm); - print_pktinfo(AF_INET6, info6->ipi6_ifindex, - NULL, &info6->ipi6_addr); - } else - fprintf(stderr, "unknown cmsg %d,%d\n", - cm->cmsg_level, cm->cmsg_type); - - if (serr && tss) { - print_timestamp(tss, serr->ee_info, serr->ee_data, - payload_len); - serr = NULL; - tss = NULL; - batch++; - } - } - - if (batch > 1) - fprintf(stderr, "batched %d timestamps\n", batch); -} - -static int recv_errmsg(int fd) -{ - static char ctrl[1024 /* overprovision*/]; - static struct msghdr msg; - struct iovec entry; - static char *data; - int ret = 0; - - data = malloc(cfg_payload_len); - if (!data) - error(1, 0, "malloc"); - - memset(&msg, 0, sizeof(msg)); - memset(&entry, 0, sizeof(entry)); - memset(ctrl, 0, sizeof(ctrl)); - - entry.iov_base = data; - entry.iov_len = cfg_payload_len; - msg.msg_iov = &entry; - msg.msg_iovlen = 1; - msg.msg_name = NULL; - msg.msg_namelen = 0; - msg.msg_control = ctrl; - msg.msg_controllen = sizeof(ctrl); - - ret = recvmsg(fd, &msg, MSG_ERRQUEUE); - if (ret == -1 && errno != EAGAIN) - error(1, errno, "recvmsg"); - - if (ret >= 0) { - __recv_errmsg_cmsg(&msg, ret); - if (cfg_show_payload) - print_payload(data, cfg_payload_len); - } - - free(data); - return ret == -1; -} - -static void do_test(int family, unsigned int opt) -{ - char *buf; - int fd, i, val = 1, total_len; - - if (family == AF_INET6 && cfg_proto != SOCK_STREAM) { - /* due to lack of checksum generation code */ - fprintf(stderr, "test: skipping datagram over IPv6\n"); - return; - } - - total_len = cfg_payload_len; - if (cfg_proto == SOCK_RAW) { - total_len += sizeof(struct udphdr); - if (cfg_ipproto == IPPROTO_RAW) - total_len += sizeof(struct iphdr); - } - - buf = malloc(total_len); - if (!buf) - error(1, 0, "malloc"); - - fd = socket(family, cfg_proto, cfg_ipproto); - if (fd < 0) - error(1, errno, "socket"); - - if (cfg_proto == SOCK_STREAM) { - if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, - (char*) &val, sizeof(val))) - error(1, 0, "setsockopt no nagle"); - - if (family == PF_INET) { - if (connect(fd, (void *) &daddr, sizeof(daddr))) - error(1, errno, "connect ipv4"); - } else { - if (connect(fd, (void *) &daddr6, sizeof(daddr6))) - error(1, errno, "connect ipv6"); - } - } - - if (cfg_do_pktinfo) { - if (family == AF_INET6) { - if (setsockopt(fd, SOL_IPV6, IPV6_RECVPKTINFO, - &val, sizeof(val))) - error(1, errno, "setsockopt pktinfo ipv6"); - } else { - if (setsockopt(fd, SOL_IP, IP_PKTINFO, - &val, sizeof(val))) - error(1, errno, "setsockopt pktinfo ipv4"); - } - } - - opt |= SOF_TIMESTAMPING_SOFTWARE | - SOF_TIMESTAMPING_OPT_CMSG | - SOF_TIMESTAMPING_OPT_ID; - if (cfg_loop_nodata) - opt |= SOF_TIMESTAMPING_OPT_TSONLY; - - if (setsockopt(fd, SOL_SOCKET, SO_TIMESTAMPING, - (char *) &opt, sizeof(opt))) - error(1, 0, "setsockopt timestamping"); - - for (i = 0; i < cfg_num_pkts; i++) { - memset(&ts_prev, 0, sizeof(ts_prev)); - memset(buf, 'a' + i, total_len); - - if (cfg_proto == SOCK_RAW) { - struct udphdr *udph; - int off = 0; - - if (cfg_ipproto == IPPROTO_RAW) { - struct iphdr *iph = (void *) buf; - - memset(iph, 0, sizeof(*iph)); - iph->ihl = 5; - iph->version = 4; - iph->ttl = 2; - iph->daddr = daddr.sin_addr.s_addr; - iph->protocol = IPPROTO_UDP; - /* kernel writes saddr, csum, len */ - - off = sizeof(*iph); - } - - udph = (void *) buf + off; - udph->source = ntohs(9000); /* random spoof */ - udph->dest = ntohs(dest_port); - udph->len = ntohs(sizeof(*udph) + cfg_payload_len); - udph->check = 0; /* not allowed for IPv6 */ - } - - print_timestamp_usr(); - if (cfg_proto != SOCK_STREAM) { - if (family == PF_INET) - val = sendto(fd, buf, total_len, 0, (void *) &daddr, sizeof(daddr)); - else - val = sendto(fd, buf, total_len, 0, (void *) &daddr6, sizeof(daddr6)); - } else { - val = send(fd, buf, cfg_payload_len, 0); - } - if (val != total_len) - error(1, errno, "send"); - - /* wait for all errors to be queued, else ACKs arrive OOO */ - usleep(50 * 1000); - - __poll(fd); - - while (!recv_errmsg(fd)) {} - } - - if (close(fd)) - error(1, errno, "close"); - - free(buf); - usleep(400 * 1000); -} - -static void __attribute__((noreturn)) usage(const char *filepath) -{ - fprintf(stderr, "\nUsage: %s [options] hostname\n" - "\nwhere options are:\n" - " -4: only IPv4\n" - " -6: only IPv6\n" - " -h: show this message\n" - " -I: request PKTINFO\n" - " -l N: send N bytes at a time\n" - " -n: set no-payload option\n" - " -r: use raw\n" - " -R: use raw (IP_HDRINCL)\n" - " -p N: connect to port N\n" - " -u: use udp\n" - " -x: show payload (up to 70 bytes)\n", - filepath); - exit(1); -} - -static void parse_opt(int argc, char **argv) -{ - int proto_count = 0; - char c; - - while ((c = getopt(argc, argv, "46hIl:np:rRux")) != -1) { - switch (c) { - case '4': - do_ipv6 = 0; - break; - case '6': - do_ipv4 = 0; - break; - case 'I': - cfg_do_pktinfo = true; - break; - case 'n': - cfg_loop_nodata = true; - break; - case 'r': - proto_count++; - cfg_proto = SOCK_RAW; - cfg_ipproto = IPPROTO_UDP; - break; - case 'R': - proto_count++; - cfg_proto = SOCK_RAW; - cfg_ipproto = IPPROTO_RAW; - break; - case 'u': - proto_count++; - cfg_proto = SOCK_DGRAM; - cfg_ipproto = IPPROTO_UDP; - break; - case 'l': - cfg_payload_len = strtoul(optarg, NULL, 10); - break; - case 'p': - dest_port = strtoul(optarg, NULL, 10); - break; - case 'x': - cfg_show_payload = true; - break; - case 'h': - default: - usage(argv[0]); - } - } - - if (!cfg_payload_len) - error(1, 0, "payload may not be nonzero"); - if (cfg_proto != SOCK_STREAM && cfg_payload_len > 1472) - error(1, 0, "udp packet might exceed expected MTU"); - if (!do_ipv4 && !do_ipv6) - error(1, 0, "pass -4 or -6, not both"); - if (proto_count > 1) - error(1, 0, "pass -r, -R or -u, not multiple"); - - if (optind != argc - 1) - error(1, 0, "missing required hostname argument"); -} - -static void resolve_hostname(const char *hostname) -{ - struct addrinfo *addrs, *cur; - int have_ipv4 = 0, have_ipv6 = 0; - - if (getaddrinfo(hostname, NULL, NULL, &addrs)) - error(1, errno, "getaddrinfo"); - - cur = addrs; - while (cur && !have_ipv4 && !have_ipv6) { - if (!have_ipv4 && cur->ai_family == AF_INET) { - memcpy(&daddr, cur->ai_addr, sizeof(daddr)); - daddr.sin_port = htons(dest_port); - have_ipv4 = 1; - } - else if (!have_ipv6 && cur->ai_family == AF_INET6) { - memcpy(&daddr6, cur->ai_addr, sizeof(daddr6)); - daddr6.sin6_port = htons(dest_port); - have_ipv6 = 1; - } - cur = cur->ai_next; - } - if (addrs) - freeaddrinfo(addrs); - - do_ipv4 &= have_ipv4; - do_ipv6 &= have_ipv6; -} - -static void do_main(int family) -{ - fprintf(stderr, "family: %s\n", - family == PF_INET ? "INET" : "INET6"); - - fprintf(stderr, "test SND\n"); - do_test(family, SOF_TIMESTAMPING_TX_SOFTWARE); - - fprintf(stderr, "test ENQ\n"); - do_test(family, SOF_TIMESTAMPING_TX_SCHED); - - fprintf(stderr, "test ENQ + SND\n"); - do_test(family, SOF_TIMESTAMPING_TX_SCHED | - SOF_TIMESTAMPING_TX_SOFTWARE); - - if (cfg_proto == SOCK_STREAM) { - fprintf(stderr, "\ntest ACK\n"); - do_test(family, SOF_TIMESTAMPING_TX_ACK); - - fprintf(stderr, "\ntest SND + ACK\n"); - do_test(family, SOF_TIMESTAMPING_TX_SOFTWARE | - SOF_TIMESTAMPING_TX_ACK); - - fprintf(stderr, "\ntest ENQ + SND + ACK\n"); - do_test(family, SOF_TIMESTAMPING_TX_SCHED | - SOF_TIMESTAMPING_TX_SOFTWARE | - SOF_TIMESTAMPING_TX_ACK); - } -} - -const char *sock_names[] = { NULL, "TCP", "UDP", "RAW" }; - -int main(int argc, char **argv) -{ - if (argc == 1) - usage(argv[0]); - - parse_opt(argc, argv); - resolve_hostname(argv[argc - 1]); - - fprintf(stderr, "protocol: %s\n", sock_names[cfg_proto]); - fprintf(stderr, "payload: %u\n", cfg_payload_len); - fprintf(stderr, "server port: %u\n", dest_port); - fprintf(stderr, "\n"); - - if (do_ipv4) - do_main(PF_INET); - if (do_ipv6) - do_main(PF_INET6); - - return 0; -} diff --git a/Documentation/pcmcia/.gitignore b/Documentation/pcmcia/.gitignore deleted file mode 100644 index 53d081336757..000000000000 --- a/Documentation/pcmcia/.gitignore +++ /dev/null @@ -1 +0,0 @@ -crc32hash diff --git a/Documentation/pcmcia/Makefile b/Documentation/pcmcia/Makefile deleted file mode 100644 index 47a8fa162683..000000000000 --- a/Documentation/pcmcia/Makefile +++ /dev/null @@ -1,7 +0,0 @@ -# List of programs to build -hostprogs-y := crc32hash - -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS_crc32hash.o += -I$(objtree)/usr/include diff --git a/Documentation/pcmcia/crc32hash.c b/Documentation/pcmcia/crc32hash.c deleted file mode 100644 index 44f8beea7260..000000000000 --- a/Documentation/pcmcia/crc32hash.c +++ /dev/null @@ -1,32 +0,0 @@ -/* crc32hash.c - derived from linux/lib/crc32.c, GNU GPL v2 */ -/* Usage example: -$ ./crc32hash "Dual Speed" -*/ - -#include <string.h> -#include <stdio.h> -#include <ctype.h> -#include <stdlib.h> - -static unsigned int crc32(unsigned char const *p, unsigned int len) -{ - int i; - unsigned int crc = 0; - while (len--) { - crc ^= *p++; - for (i = 0; i < 8; i++) - crc = (crc >> 1) ^ ((crc & 1) ? 0xedb88320 : 0); - } - return crc; -} - -int main(int argc, char **argv) { - unsigned int result; - if (argc != 2) { - printf("no string passed as argument\n"); - return -1; - } - result = crc32((unsigned char const *)argv[1], strlen(argv[1])); - printf("0x%x\n", result); - return 0; -} diff --git a/Documentation/pcmcia/devicetable.txt b/Documentation/pcmcia/devicetable.txt index 199afd100cf2..5f3e00ab54c4 100644 --- a/Documentation/pcmcia/devicetable.txt +++ b/Documentation/pcmcia/devicetable.txt @@ -27,7 +27,7 @@ pcmcia:m0149cC1ABf06pfn00fn00pa725B842DpbF1EFEE84pc0877B627pd00000000 The hex value after "pa" is the hash of product ID string 1, after "pb" for string 2 and so on. -Alternatively, you can use crc32hash (see Documentation/pcmcia/crc32hash.c) +Alternatively, you can use crc32hash (see tools/pcmcia/crc32hash.c) to determine the crc32 hash. Simply pass the string you want to evaluate as argument to this program, e.g.: -$ ./crc32hash "Dual Speed" +$ tools/pcmcia/crc32hash "Dual Speed" diff --git a/Documentation/prctl/.gitignore b/Documentation/prctl/.gitignore deleted file mode 100644 index 0b5c27447bf6..000000000000 --- a/Documentation/prctl/.gitignore +++ /dev/null @@ -1,3 +0,0 @@ -disable-tsc-ctxt-sw-stress-test -disable-tsc-on-off-stress-test -disable-tsc-test diff --git a/Documentation/prctl/Makefile b/Documentation/prctl/Makefile deleted file mode 100644 index 44de3080c7f2..000000000000 --- a/Documentation/prctl/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -ifndef CROSS_COMPILE -# List of programs to build -hostprogs-$(CONFIG_X86) := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test disable-tsc-test -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS_disable-tsc-ctxt-sw-stress-test.o += -I$(objtree)/usr/include -HOSTCFLAGS_disable-tsc-on-off-stress-test.o += -I$(objtree)/usr/include -HOSTCFLAGS_disable-tsc-test.o += -I$(objtree)/usr/include -endif diff --git a/Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c b/Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c deleted file mode 100644 index f7499d1c0415..000000000000 --- a/Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...) - * - * Tests if the control register is updated correctly - * at context switches - * - * Warning: this test will cause a very high load for a few seconds - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <signal.h> -#include <inttypes.h> -#include <wait.h> - - -#include <sys/prctl.h> -#include <linux/prctl.h> - -/* Get/set the process' ability to use the timestamp counter instruction */ -#ifndef PR_GET_TSC -#define PR_GET_TSC 25 -#define PR_SET_TSC 26 -# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */ -# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */ -#endif - -static uint64_t rdtsc(void) -{ -uint32_t lo, hi; -/* We cannot use "=A", since this would use %rax on x86_64 */ -__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); -return (uint64_t)hi << 32 | lo; -} - -static void sigsegv_expect(int sig) -{ - /* */ -} - -static void segvtask(void) -{ - if (prctl(PR_SET_TSC, PR_TSC_SIGSEGV) < 0) - { - perror("prctl"); - exit(0); - } - signal(SIGSEGV, sigsegv_expect); - alarm(10); - rdtsc(); - fprintf(stderr, "FATAL ERROR, rdtsc() succeeded while disabled\n"); - exit(0); -} - - -static void sigsegv_fail(int sig) -{ - fprintf(stderr, "FATAL ERROR, rdtsc() failed while enabled\n"); - exit(0); -} - -static void rdtsctask(void) -{ - if (prctl(PR_SET_TSC, PR_TSC_ENABLE) < 0) - { - perror("prctl"); - exit(0); - } - signal(SIGSEGV, sigsegv_fail); - alarm(10); - for(;;) rdtsc(); -} - - -int main(void) -{ - int n_tasks = 100, i; - - fprintf(stderr, "[No further output means we're allright]\n"); - - for (i=0; i<n_tasks; i++) - if (fork() == 0) - { - if (i & 1) - segvtask(); - else - rdtsctask(); - } - - for (i=0; i<n_tasks; i++) - wait(NULL); - - exit(0); -} - diff --git a/Documentation/prctl/disable-tsc-on-off-stress-test.c b/Documentation/prctl/disable-tsc-on-off-stress-test.c deleted file mode 100644 index a06f027e9d16..000000000000 --- a/Documentation/prctl/disable-tsc-on-off-stress-test.c +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...) - * - * Tests if the control register is updated correctly - * when set with prctl() - * - * Warning: this test will cause a very high load for a few seconds - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <signal.h> -#include <inttypes.h> -#include <wait.h> - - -#include <sys/prctl.h> -#include <linux/prctl.h> - -/* Get/set the process' ability to use the timestamp counter instruction */ -#ifndef PR_GET_TSC -#define PR_GET_TSC 25 -#define PR_SET_TSC 26 -# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */ -# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */ -#endif - -/* snippet from wikipedia :-) */ - -static uint64_t rdtsc(void) -{ -uint32_t lo, hi; -/* We cannot use "=A", since this would use %rax on x86_64 */ -__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); -return (uint64_t)hi << 32 | lo; -} - -int should_segv = 0; - -static void sigsegv_cb(int sig) -{ - if (!should_segv) - { - fprintf(stderr, "FATAL ERROR, rdtsc() failed while enabled\n"); - exit(0); - } - if (prctl(PR_SET_TSC, PR_TSC_ENABLE) < 0) - { - perror("prctl"); - exit(0); - } - should_segv = 0; - - rdtsc(); -} - -static void task(void) -{ - signal(SIGSEGV, sigsegv_cb); - alarm(10); - for(;;) - { - rdtsc(); - if (should_segv) - { - fprintf(stderr, "FATAL ERROR, rdtsc() succeeded while disabled\n"); - exit(0); - } - if (prctl(PR_SET_TSC, PR_TSC_SIGSEGV) < 0) - { - perror("prctl"); - exit(0); - } - should_segv = 1; - } -} - - -int main(void) -{ - int n_tasks = 100, i; - - fprintf(stderr, "[No further output means we're allright]\n"); - - for (i=0; i<n_tasks; i++) - if (fork() == 0) - task(); - - for (i=0; i<n_tasks; i++) - wait(NULL); - - exit(0); -} - diff --git a/Documentation/prctl/disable-tsc-test.c b/Documentation/prctl/disable-tsc-test.c deleted file mode 100644 index 8d494f7bebdb..000000000000 --- a/Documentation/prctl/disable-tsc-test.c +++ /dev/null @@ -1,95 +0,0 @@ -/* - * Tests for prctl(PR_GET_TSC, ...) / prctl(PR_SET_TSC, ...) - * - * Basic test to test behaviour of PR_GET_TSC and PR_SET_TSC - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <signal.h> -#include <inttypes.h> - - -#include <sys/prctl.h> -#include <linux/prctl.h> - -/* Get/set the process' ability to use the timestamp counter instruction */ -#ifndef PR_GET_TSC -#define PR_GET_TSC 25 -#define PR_SET_TSC 26 -# define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */ -# define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */ -#endif - -const char *tsc_names[] = -{ - [0] = "[not set]", - [PR_TSC_ENABLE] = "PR_TSC_ENABLE", - [PR_TSC_SIGSEGV] = "PR_TSC_SIGSEGV", -}; - -static uint64_t rdtsc(void) -{ -uint32_t lo, hi; -/* We cannot use "=A", since this would use %rax on x86_64 */ -__asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); -return (uint64_t)hi << 32 | lo; -} - -static void sigsegv_cb(int sig) -{ - int tsc_val = 0; - - printf("[ SIG_SEGV ]\n"); - printf("prctl(PR_GET_TSC, &tsc_val); "); - fflush(stdout); - - if ( prctl(PR_GET_TSC, &tsc_val) == -1) - perror("prctl"); - - printf("tsc_val == %s\n", tsc_names[tsc_val]); - printf("prctl(PR_SET_TSC, PR_TSC_ENABLE)\n"); - fflush(stdout); - if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1) - perror("prctl"); - - printf("rdtsc() == "); -} - -int main(void) -{ - int tsc_val = 0; - - signal(SIGSEGV, sigsegv_cb); - - printf("rdtsc() == %llu\n", (unsigned long long)rdtsc()); - printf("prctl(PR_GET_TSC, &tsc_val); "); - fflush(stdout); - - if ( prctl(PR_GET_TSC, &tsc_val) == -1) - perror("prctl"); - - printf("tsc_val == %s\n", tsc_names[tsc_val]); - printf("rdtsc() == %llu\n", (unsigned long long)rdtsc()); - printf("prctl(PR_SET_TSC, PR_TSC_ENABLE)\n"); - fflush(stdout); - - if ( prctl(PR_SET_TSC, PR_TSC_ENABLE) == -1) - perror("prctl"); - - printf("rdtsc() == %llu\n", (unsigned long long)rdtsc()); - printf("prctl(PR_SET_TSC, PR_TSC_SIGSEGV)\n"); - fflush(stdout); - - if ( prctl(PR_SET_TSC, PR_TSC_SIGSEGV) == -1) - perror("prctl"); - - printf("rdtsc() == "); - fflush(stdout); - printf("%llu\n", (unsigned long long)rdtsc()); - fflush(stdout); - - exit(EXIT_SUCCESS); -} - diff --git a/Documentation/ptp/.gitignore b/Documentation/ptp/.gitignore deleted file mode 100644 index f562e49d6917..000000000000 --- a/Documentation/ptp/.gitignore +++ /dev/null @@ -1 +0,0 @@ -testptp diff --git a/Documentation/ptp/Makefile b/Documentation/ptp/Makefile deleted file mode 100644 index 293d6c09a11f..000000000000 --- a/Documentation/ptp/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# List of programs to build -hostprogs-y := testptp - -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS_testptp.o += -I$(objtree)/usr/include -HOSTLOADLIBES_testptp := -lrt diff --git a/Documentation/ptp/testptp.c b/Documentation/ptp/testptp.c deleted file mode 100644 index 5d2eae16f7ee..000000000000 --- a/Documentation/ptp/testptp.c +++ /dev/null @@ -1,523 +0,0 @@ -/* - * PTP 1588 clock support - User space test program - * - * Copyright (C) 2010 OMICRON electronics GmbH - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#define _GNU_SOURCE -#define __SANE_USERSPACE_TYPES__ /* For PPC64, to get LL64 types */ -#include <errno.h> -#include <fcntl.h> -#include <inttypes.h> -#include <math.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/ioctl.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <sys/time.h> -#include <sys/timex.h> -#include <sys/types.h> -#include <time.h> -#include <unistd.h> - -#include <linux/ptp_clock.h> - -#define DEVICE "/dev/ptp0" - -#ifndef ADJ_SETOFFSET -#define ADJ_SETOFFSET 0x0100 -#endif - -#ifndef CLOCK_INVALID -#define CLOCK_INVALID -1 -#endif - -/* clock_adjtime is not available in GLIBC < 2.14 */ -#if !__GLIBC_PREREQ(2, 14) -#include <sys/syscall.h> -static int clock_adjtime(clockid_t id, struct timex *tx) -{ - return syscall(__NR_clock_adjtime, id, tx); -} -#endif - -static clockid_t get_clockid(int fd) -{ -#define CLOCKFD 3 -#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD) - - return FD_TO_CLOCKID(fd); -} - -static void handle_alarm(int s) -{ - printf("received signal %d\n", s); -} - -static int install_handler(int signum, void (*handler)(int)) -{ - struct sigaction action; - sigset_t mask; - - /* Unblock the signal. */ - sigemptyset(&mask); - sigaddset(&mask, signum); - sigprocmask(SIG_UNBLOCK, &mask, NULL); - - /* Install the signal handler. */ - action.sa_handler = handler; - action.sa_flags = 0; - sigemptyset(&action.sa_mask); - sigaction(signum, &action, NULL); - - return 0; -} - -static long ppb_to_scaled_ppm(int ppb) -{ - /* - * The 'freq' field in the 'struct timex' is in parts per - * million, but with a 16 bit binary fractional field. - * Instead of calculating either one of - * - * scaled_ppm = (ppb / 1000) << 16 [1] - * scaled_ppm = (ppb << 16) / 1000 [2] - * - * we simply use double precision math, in order to avoid the - * truncation in [1] and the possible overflow in [2]. - */ - return (long) (ppb * 65.536); -} - -static int64_t pctns(struct ptp_clock_time *t) -{ - return t->sec * 1000000000LL + t->nsec; -} - -static void usage(char *progname) -{ - fprintf(stderr, - "usage: %s [options]\n" - " -a val request a one-shot alarm after 'val' seconds\n" - " -A val request a periodic alarm every 'val' seconds\n" - " -c query the ptp clock's capabilities\n" - " -d name device to open\n" - " -e val read 'val' external time stamp events\n" - " -f val adjust the ptp clock frequency by 'val' ppb\n" - " -g get the ptp clock time\n" - " -h prints this message\n" - " -i val index for event/trigger\n" - " -k val measure the time offset between system and phc clock\n" - " for 'val' times (Maximum 25)\n" - " -l list the current pin configuration\n" - " -L pin,val configure pin index 'pin' with function 'val'\n" - " the channel index is taken from the '-i' option\n" - " 'val' specifies the auxiliary function:\n" - " 0 - none\n" - " 1 - external time stamp\n" - " 2 - periodic output\n" - " -p val enable output with a period of 'val' nanoseconds\n" - " -P val enable or disable (val=1|0) the system clock PPS\n" - " -s set the ptp clock time from the system time\n" - " -S set the system time from the ptp clock time\n" - " -t val shift the ptp clock time by 'val' seconds\n" - " -T val set the ptp clock time to 'val' seconds\n", - progname); -} - -int main(int argc, char *argv[]) -{ - struct ptp_clock_caps caps; - struct ptp_extts_event event; - struct ptp_extts_request extts_request; - struct ptp_perout_request perout_request; - struct ptp_pin_desc desc; - struct timespec ts; - struct timex tx; - - static timer_t timerid; - struct itimerspec timeout; - struct sigevent sigevent; - - struct ptp_clock_time *pct; - struct ptp_sys_offset *sysoff; - - - char *progname; - unsigned int i; - int c, cnt, fd; - - char *device = DEVICE; - clockid_t clkid; - int adjfreq = 0x7fffffff; - int adjtime = 0; - int capabilities = 0; - int extts = 0; - int gettime = 0; - int index = 0; - int list_pins = 0; - int oneshot = 0; - int pct_offset = 0; - int n_samples = 0; - int periodic = 0; - int perout = -1; - int pin_index = -1, pin_func; - int pps = -1; - int seconds = 0; - int settime = 0; - - int64_t t1, t2, tp; - int64_t interval, offset; - - progname = strrchr(argv[0], '/'); - progname = progname ? 1+progname : argv[0]; - while (EOF != (c = getopt(argc, argv, "a:A:cd:e:f:ghi:k:lL:p:P:sSt:T:v"))) { - switch (c) { - case 'a': - oneshot = atoi(optarg); - break; - case 'A': - periodic = atoi(optarg); - break; - case 'c': - capabilities = 1; - break; - case 'd': - device = optarg; - break; - case 'e': - extts = atoi(optarg); - break; - case 'f': - adjfreq = atoi(optarg); - break; - case 'g': - gettime = 1; - break; - case 'i': - index = atoi(optarg); - break; - case 'k': - pct_offset = 1; - n_samples = atoi(optarg); - break; - case 'l': - list_pins = 1; - break; - case 'L': - cnt = sscanf(optarg, "%d,%d", &pin_index, &pin_func); - if (cnt != 2) { - usage(progname); - return -1; - } - break; - case 'p': - perout = atoi(optarg); - break; - case 'P': - pps = atoi(optarg); - break; - case 's': - settime = 1; - break; - case 'S': - settime = 2; - break; - case 't': - adjtime = atoi(optarg); - break; - case 'T': - settime = 3; - seconds = atoi(optarg); - break; - case 'h': - usage(progname); - return 0; - case '?': - default: - usage(progname); - return -1; - } - } - - fd = open(device, O_RDWR); - if (fd < 0) { - fprintf(stderr, "opening %s: %s\n", device, strerror(errno)); - return -1; - } - - clkid = get_clockid(fd); - if (CLOCK_INVALID == clkid) { - fprintf(stderr, "failed to read clock id\n"); - return -1; - } - - if (capabilities) { - if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) { - perror("PTP_CLOCK_GETCAPS"); - } else { - printf("capabilities:\n" - " %d maximum frequency adjustment (ppb)\n" - " %d programmable alarms\n" - " %d external time stamp channels\n" - " %d programmable periodic signals\n" - " %d pulse per second\n" - " %d programmable pins\n" - " %d cross timestamping\n", - caps.max_adj, - caps.n_alarm, - caps.n_ext_ts, - caps.n_per_out, - caps.pps, - caps.n_pins, - caps.cross_timestamping); - } - } - - if (0x7fffffff != adjfreq) { - memset(&tx, 0, sizeof(tx)); - tx.modes = ADJ_FREQUENCY; - tx.freq = ppb_to_scaled_ppm(adjfreq); - if (clock_adjtime(clkid, &tx)) { - perror("clock_adjtime"); - } else { - puts("frequency adjustment okay"); - } - } - - if (adjtime) { - memset(&tx, 0, sizeof(tx)); - tx.modes = ADJ_SETOFFSET; - tx.time.tv_sec = adjtime; - tx.time.tv_usec = 0; - if (clock_adjtime(clkid, &tx) < 0) { - perror("clock_adjtime"); - } else { - puts("time shift okay"); - } - } - - if (gettime) { - if (clock_gettime(clkid, &ts)) { - perror("clock_gettime"); - } else { - printf("clock time: %ld.%09ld or %s", - ts.tv_sec, ts.tv_nsec, ctime(&ts.tv_sec)); - } - } - - if (settime == 1) { - clock_gettime(CLOCK_REALTIME, &ts); - if (clock_settime(clkid, &ts)) { - perror("clock_settime"); - } else { - puts("set time okay"); - } - } - - if (settime == 2) { - clock_gettime(clkid, &ts); - if (clock_settime(CLOCK_REALTIME, &ts)) { - perror("clock_settime"); - } else { - puts("set time okay"); - } - } - - if (settime == 3) { - ts.tv_sec = seconds; - ts.tv_nsec = 0; - if (clock_settime(clkid, &ts)) { - perror("clock_settime"); - } else { - puts("set time okay"); - } - } - - if (extts) { - memset(&extts_request, 0, sizeof(extts_request)); - extts_request.index = index; - extts_request.flags = PTP_ENABLE_FEATURE; - if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) { - perror("PTP_EXTTS_REQUEST"); - extts = 0; - } else { - puts("external time stamp request okay"); - } - for (; extts; extts--) { - cnt = read(fd, &event, sizeof(event)); - if (cnt != sizeof(event)) { - perror("read"); - break; - } - printf("event index %u at %lld.%09u\n", event.index, - event.t.sec, event.t.nsec); - fflush(stdout); - } - /* Disable the feature again. */ - extts_request.flags = 0; - if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) { - perror("PTP_EXTTS_REQUEST"); - } - } - - if (list_pins) { - int n_pins = 0; - if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) { - perror("PTP_CLOCK_GETCAPS"); - } else { - n_pins = caps.n_pins; - } - for (i = 0; i < n_pins; i++) { - desc.index = i; - if (ioctl(fd, PTP_PIN_GETFUNC, &desc)) { - perror("PTP_PIN_GETFUNC"); - break; - } - printf("name %s index %u func %u chan %u\n", - desc.name, desc.index, desc.func, desc.chan); - } - } - - if (oneshot) { - install_handler(SIGALRM, handle_alarm); - /* Create a timer. */ - sigevent.sigev_notify = SIGEV_SIGNAL; - sigevent.sigev_signo = SIGALRM; - if (timer_create(clkid, &sigevent, &timerid)) { - perror("timer_create"); - return -1; - } - /* Start the timer. */ - memset(&timeout, 0, sizeof(timeout)); - timeout.it_value.tv_sec = oneshot; - if (timer_settime(timerid, 0, &timeout, NULL)) { - perror("timer_settime"); - return -1; - } - pause(); - timer_delete(timerid); - } - - if (periodic) { - install_handler(SIGALRM, handle_alarm); - /* Create a timer. */ - sigevent.sigev_notify = SIGEV_SIGNAL; - sigevent.sigev_signo = SIGALRM; - if (timer_create(clkid, &sigevent, &timerid)) { - perror("timer_create"); - return -1; - } - /* Start the timer. */ - memset(&timeout, 0, sizeof(timeout)); - timeout.it_interval.tv_sec = periodic; - timeout.it_value.tv_sec = periodic; - if (timer_settime(timerid, 0, &timeout, NULL)) { - perror("timer_settime"); - return -1; - } - while (1) { - pause(); - } - timer_delete(timerid); - } - - if (perout >= 0) { - if (clock_gettime(clkid, &ts)) { - perror("clock_gettime"); - return -1; - } - memset(&perout_request, 0, sizeof(perout_request)); - perout_request.index = index; - perout_request.start.sec = ts.tv_sec + 2; - perout_request.start.nsec = 0; - perout_request.period.sec = 0; - perout_request.period.nsec = perout; - if (ioctl(fd, PTP_PEROUT_REQUEST, &perout_request)) { - perror("PTP_PEROUT_REQUEST"); - } else { - puts("periodic output request okay"); - } - } - - if (pin_index >= 0) { - memset(&desc, 0, sizeof(desc)); - desc.index = pin_index; - desc.func = pin_func; - desc.chan = index; - if (ioctl(fd, PTP_PIN_SETFUNC, &desc)) { - perror("PTP_PIN_SETFUNC"); - } else { - puts("set pin function okay"); - } - } - - if (pps != -1) { - int enable = pps ? 1 : 0; - if (ioctl(fd, PTP_ENABLE_PPS, enable)) { - perror("PTP_ENABLE_PPS"); - } else { - puts("pps for system time request okay"); - } - } - - if (pct_offset) { - if (n_samples <= 0 || n_samples > 25) { - puts("n_samples should be between 1 and 25"); - usage(progname); - return -1; - } - - sysoff = calloc(1, sizeof(*sysoff)); - if (!sysoff) { - perror("calloc"); - return -1; - } - sysoff->n_samples = n_samples; - - if (ioctl(fd, PTP_SYS_OFFSET, sysoff)) - perror("PTP_SYS_OFFSET"); - else - puts("system and phc clock time offset request okay"); - - pct = &sysoff->ts[0]; - for (i = 0; i < sysoff->n_samples; i++) { - t1 = pctns(pct+2*i); - tp = pctns(pct+2*i+1); - t2 = pctns(pct+2*i+2); - interval = t2 - t1; - offset = (t2 + t1) / 2 - tp; - - printf("system time: %lld.%u\n", - (pct+2*i)->sec, (pct+2*i)->nsec); - printf("phc time: %lld.%u\n", - (pct+2*i+1)->sec, (pct+2*i+1)->nsec); - printf("system time: %lld.%u\n", - (pct+2*i+2)->sec, (pct+2*i+2)->nsec); - printf("system/phc clock time offset is %" PRId64 " ns\n" - "system clock time delay is %" PRId64 " ns\n", - offset, interval); - } - - free(sysoff); - } - - close(fd); - return 0; -} diff --git a/Documentation/ptp/testptp.mk b/Documentation/ptp/testptp.mk deleted file mode 100644 index 4ef2d9755421..000000000000 --- a/Documentation/ptp/testptp.mk +++ /dev/null @@ -1,33 +0,0 @@ -# PTP 1588 clock support - User space test program -# -# Copyright (C) 2010 OMICRON electronics GmbH -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - -CC = $(CROSS_COMPILE)gcc -INC = -I$(KBUILD_OUTPUT)/usr/include -CFLAGS = -Wall $(INC) -LDLIBS = -lrt -PROGS = testptp - -all: $(PROGS) - -testptp: testptp.o - -clean: - rm -f testptp.o - -distclean: clean - rm -f $(PROGS) diff --git a/Documentation/spi/00-INDEX b/Documentation/spi/00-INDEX index 4644bf0d9832..8e4bb17d70eb 100644 --- a/Documentation/spi/00-INDEX +++ b/Documentation/spi/00-INDEX @@ -1,7 +1,5 @@ 00-INDEX - this file. -Makefile - - Makefile for the example sourcefiles. butterfly - AVR Butterfly SPI driver overview and pin configuration. ep93xx_spi diff --git a/Documentation/timers/.gitignore b/Documentation/timers/.gitignore deleted file mode 100644 index c5c45d7ec0df..000000000000 --- a/Documentation/timers/.gitignore +++ /dev/null @@ -1 +0,0 @@ -hpet_example diff --git a/Documentation/timers/00-INDEX b/Documentation/timers/00-INDEX index ee212a27772f..3be05fe0f1f9 100644 --- a/Documentation/timers/00-INDEX +++ b/Documentation/timers/00-INDEX @@ -4,12 +4,8 @@ highres.txt - High resolution timers and dynamic ticks design notes hpet.txt - High Precision Event Timer Driver for Linux -hpet_example.c - - sample hpet timer test program hrtimers.txt - subsystem for high-resolution kernel timers -Makefile - - Build and link hpet_example NO_HZ.txt - Summary of the different methods for the scheduler clock-interrupts management. timekeeping.txt diff --git a/Documentation/timers/Makefile b/Documentation/timers/Makefile deleted file mode 100644 index 6c09ee6ca721..000000000000 --- a/Documentation/timers/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# List of programs to build -hostprogs-$(CONFIG_X86) := hpet_example - -# Tell kbuild to always build the programs -always := $(hostprogs-y) diff --git a/Documentation/timers/hpet.txt b/Documentation/timers/hpet.txt index a484d2c109d7..895345ec513b 100644 --- a/Documentation/timers/hpet.txt +++ b/Documentation/timers/hpet.txt @@ -25,4 +25,4 @@ arch/x86/kernel/hpet.c. The driver provides a userspace API which resembles the API found in the RTC driver framework. An example user space program is provided in -file:Documentation/timers/hpet_example.c +file:samples/timers/hpet_example.c diff --git a/Documentation/timers/hpet_example.c b/Documentation/timers/hpet_example.c deleted file mode 100644 index 3ab4993d85e0..000000000000 --- a/Documentation/timers/hpet_example.c +++ /dev/null @@ -1,294 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> -#include <string.h> -#include <memory.h> -#include <malloc.h> -#include <time.h> -#include <ctype.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <signal.h> -#include <errno.h> -#include <sys/time.h> -#include <linux/hpet.h> - - -extern void hpet_open_close(int, const char **); -extern void hpet_info(int, const char **); -extern void hpet_poll(int, const char **); -extern void hpet_fasync(int, const char **); -extern void hpet_read(int, const char **); - -#include <sys/poll.h> -#include <sys/ioctl.h> - -struct hpet_command { - char *command; - void (*func)(int argc, const char ** argv); -} hpet_command[] = { - { - "open-close", - hpet_open_close - }, - { - "info", - hpet_info - }, - { - "poll", - hpet_poll - }, - { - "fasync", - hpet_fasync - }, -}; - -int -main(int argc, const char ** argv) -{ - unsigned int i; - - argc--; - argv++; - - if (!argc) { - fprintf(stderr, "-hpet: requires command\n"); - return -1; - } - - - for (i = 0; i < (sizeof (hpet_command) / sizeof (hpet_command[0])); i++) - if (!strcmp(argv[0], hpet_command[i].command)) { - argc--; - argv++; - fprintf(stderr, "-hpet: executing %s\n", - hpet_command[i].command); - hpet_command[i].func(argc, argv); - return 0; - } - - fprintf(stderr, "do_hpet: command %s not implemented\n", argv[0]); - - return -1; -} - -void -hpet_open_close(int argc, const char **argv) -{ - int fd; - - if (argc != 1) { - fprintf(stderr, "hpet_open_close: device-name\n"); - return; - } - - fd = open(argv[0], O_RDONLY); - if (fd < 0) - fprintf(stderr, "hpet_open_close: open failed\n"); - else - close(fd); - - return; -} - -void -hpet_info(int argc, const char **argv) -{ - struct hpet_info info; - int fd; - - if (argc != 1) { - fprintf(stderr, "hpet_info: device-name\n"); - return; - } - - fd = open(argv[0], O_RDONLY); - if (fd < 0) { - fprintf(stderr, "hpet_info: open of %s failed\n", argv[0]); - return; - } - - if (ioctl(fd, HPET_INFO, &info) < 0) { - fprintf(stderr, "hpet_info: failed to get info\n"); - goto out; - } - - fprintf(stderr, "hpet_info: hi_irqfreq 0x%lx hi_flags 0x%lx ", - info.hi_ireqfreq, info.hi_flags); - fprintf(stderr, "hi_hpet %d hi_timer %d\n", - info.hi_hpet, info.hi_timer); - -out: - close(fd); - return; -} - -void -hpet_poll(int argc, const char **argv) -{ - unsigned long freq; - int iterations, i, fd; - struct pollfd pfd; - struct hpet_info info; - struct timeval stv, etv; - struct timezone tz; - long usec; - - if (argc != 3) { - fprintf(stderr, "hpet_poll: device-name freq iterations\n"); - return; - } - - freq = atoi(argv[1]); - iterations = atoi(argv[2]); - - fd = open(argv[0], O_RDONLY); - - if (fd < 0) { - fprintf(stderr, "hpet_poll: open of %s failed\n", argv[0]); - return; - } - - if (ioctl(fd, HPET_IRQFREQ, freq) < 0) { - fprintf(stderr, "hpet_poll: HPET_IRQFREQ failed\n"); - goto out; - } - - if (ioctl(fd, HPET_INFO, &info) < 0) { - fprintf(stderr, "hpet_poll: failed to get info\n"); - goto out; - } - - fprintf(stderr, "hpet_poll: info.hi_flags 0x%lx\n", info.hi_flags); - - if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) { - fprintf(stderr, "hpet_poll: HPET_EPI failed\n"); - goto out; - } - - if (ioctl(fd, HPET_IE_ON, 0) < 0) { - fprintf(stderr, "hpet_poll, HPET_IE_ON failed\n"); - goto out; - } - - pfd.fd = fd; - pfd.events = POLLIN; - - for (i = 0; i < iterations; i++) { - pfd.revents = 0; - gettimeofday(&stv, &tz); - if (poll(&pfd, 1, -1) < 0) - fprintf(stderr, "hpet_poll: poll failed\n"); - else { - long data; - - gettimeofday(&etv, &tz); - usec = stv.tv_sec * 1000000 + stv.tv_usec; - usec = (etv.tv_sec * 1000000 + etv.tv_usec) - usec; - - fprintf(stderr, - "hpet_poll: expired time = 0x%lx\n", usec); - - fprintf(stderr, "hpet_poll: revents = 0x%x\n", - pfd.revents); - - if (read(fd, &data, sizeof(data)) != sizeof(data)) { - fprintf(stderr, "hpet_poll: read failed\n"); - } - else - fprintf(stderr, "hpet_poll: data 0x%lx\n", - data); - } - } - -out: - close(fd); - return; -} - -static int hpet_sigio_count; - -static void -hpet_sigio(int val) -{ - fprintf(stderr, "hpet_sigio: called\n"); - hpet_sigio_count++; -} - -void -hpet_fasync(int argc, const char **argv) -{ - unsigned long freq; - int iterations, i, fd, value; - sig_t oldsig; - struct hpet_info info; - - hpet_sigio_count = 0; - fd = -1; - - if ((oldsig = signal(SIGIO, hpet_sigio)) == SIG_ERR) { - fprintf(stderr, "hpet_fasync: failed to set signal handler\n"); - return; - } - - if (argc != 3) { - fprintf(stderr, "hpet_fasync: device-name freq iterations\n"); - goto out; - } - - fd = open(argv[0], O_RDONLY); - - if (fd < 0) { - fprintf(stderr, "hpet_fasync: failed to open %s\n", argv[0]); - return; - } - - - if ((fcntl(fd, F_SETOWN, getpid()) == 1) || - ((value = fcntl(fd, F_GETFL)) == 1) || - (fcntl(fd, F_SETFL, value | O_ASYNC) == 1)) { - fprintf(stderr, "hpet_fasync: fcntl failed\n"); - goto out; - } - - freq = atoi(argv[1]); - iterations = atoi(argv[2]); - - if (ioctl(fd, HPET_IRQFREQ, freq) < 0) { - fprintf(stderr, "hpet_fasync: HPET_IRQFREQ failed\n"); - goto out; - } - - if (ioctl(fd, HPET_INFO, &info) < 0) { - fprintf(stderr, "hpet_fasync: failed to get info\n"); - goto out; - } - - fprintf(stderr, "hpet_fasync: info.hi_flags 0x%lx\n", info.hi_flags); - - if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) { - fprintf(stderr, "hpet_fasync: HPET_EPI failed\n"); - goto out; - } - - if (ioctl(fd, HPET_IE_ON, 0) < 0) { - fprintf(stderr, "hpet_fasync, HPET_IE_ON failed\n"); - goto out; - } - - for (i = 0; i < iterations; i++) { - (void) pause(); - fprintf(stderr, "hpet_fasync: count = %d\n", hpet_sigio_count); - } - -out: - signal(SIGIO, oldsig); - - if (fd >= 0) - close(fd); - - return; -} diff --git a/Documentation/vDSO/.gitignore b/Documentation/vDSO/.gitignore deleted file mode 100644 index 133bf9ee986c..000000000000 --- a/Documentation/vDSO/.gitignore +++ /dev/null @@ -1,2 +0,0 @@ -vdso_test -vdso_standalone_test_x86 diff --git a/Documentation/vDSO/Makefile b/Documentation/vDSO/Makefile deleted file mode 100644 index b12e98770e1f..000000000000 --- a/Documentation/vDSO/Makefile +++ /dev/null @@ -1,17 +0,0 @@ -ifndef CROSS_COMPILE -# vdso_test won't build for glibc < 2.16, so disable it -# hostprogs-y := vdso_test -hostprogs-$(CONFIG_X86) := vdso_standalone_test_x86 -vdso_standalone_test_x86-objs := vdso_standalone_test_x86.o parse_vdso.o -vdso_test-objs := parse_vdso.o vdso_test.o - -# Tell kbuild to always build the programs -always := $(hostprogs-y) - -HOSTCFLAGS := -I$(objtree)/usr/include -std=gnu99 -HOSTCFLAGS_vdso_standalone_test_x86.o := -fno-asynchronous-unwind-tables -fno-stack-protector -HOSTLOADLIBES_vdso_standalone_test_x86 := -nostdlib -ifeq ($(CONFIG_X86_32),y) -HOSTLOADLIBES_vdso_standalone_test_x86 += -lgcc_s -endif -endif diff --git a/Documentation/vDSO/parse_vdso.c b/Documentation/vDSO/parse_vdso.c deleted file mode 100644 index 1dbb4b87268f..000000000000 --- a/Documentation/vDSO/parse_vdso.c +++ /dev/null @@ -1,269 +0,0 @@ -/* - * parse_vdso.c: Linux reference vDSO parser - * Written by Andrew Lutomirski, 2011-2014. - * - * This code is meant to be linked in to various programs that run on Linux. - * As such, it is available with as few restrictions as possible. This file - * is licensed under the Creative Commons Zero License, version 1.0, - * available at http://creativecommons.org/publicdomain/zero/1.0/legalcode - * - * The vDSO is a regular ELF DSO that the kernel maps into user space when - * it starts a program. It works equally well in statically and dynamically - * linked binaries. - * - * This code is tested on x86. In principle it should work on any - * architecture that has a vDSO. - */ - -#include <stdbool.h> -#include <stdint.h> -#include <string.h> -#include <limits.h> -#include <elf.h> - -/* - * To use this vDSO parser, first call one of the vdso_init_* functions. - * If you've already parsed auxv, then pass the value of AT_SYSINFO_EHDR - * to vdso_init_from_sysinfo_ehdr. Otherwise pass auxv to vdso_init_from_auxv. - * Then call vdso_sym for each symbol you want. For example, to look up - * gettimeofday on x86_64, use: - * - * <some pointer> = vdso_sym("LINUX_2.6", "gettimeofday"); - * or - * <some pointer> = vdso_sym("LINUX_2.6", "__vdso_gettimeofday"); - * - * vdso_sym will return 0 if the symbol doesn't exist or if the init function - * failed or was not called. vdso_sym is a little slow, so its return value - * should be cached. - * - * vdso_sym is threadsafe; the init functions are not. - * - * These are the prototypes: - */ -extern void vdso_init_from_auxv(void *auxv); -extern void vdso_init_from_sysinfo_ehdr(uintptr_t base); -extern void *vdso_sym(const char *version, const char *name); - - -/* And here's the code. */ -#ifndef ELF_BITS -# if ULONG_MAX > 0xffffffffUL -# define ELF_BITS 64 -# else -# define ELF_BITS 32 -# endif -#endif - -#define ELF_BITS_XFORM2(bits, x) Elf##bits##_##x -#define ELF_BITS_XFORM(bits, x) ELF_BITS_XFORM2(bits, x) -#define ELF(x) ELF_BITS_XFORM(ELF_BITS, x) - -static struct vdso_info -{ - bool valid; - - /* Load information */ - uintptr_t load_addr; - uintptr_t load_offset; /* load_addr - recorded vaddr */ - - /* Symbol table */ - ELF(Sym) *symtab; - const char *symstrings; - ELF(Word) *bucket, *chain; - ELF(Word) nbucket, nchain; - - /* Version table */ - ELF(Versym) *versym; - ELF(Verdef) *verdef; -} vdso_info; - -/* Straight from the ELF specification. */ -static unsigned long elf_hash(const unsigned char *name) -{ - unsigned long h = 0, g; - while (*name) - { - h = (h << 4) + *name++; - if (g = h & 0xf0000000) - h ^= g >> 24; - h &= ~g; - } - return h; -} - -void vdso_init_from_sysinfo_ehdr(uintptr_t base) -{ - size_t i; - bool found_vaddr = false; - - vdso_info.valid = false; - - vdso_info.load_addr = base; - - ELF(Ehdr) *hdr = (ELF(Ehdr)*)base; - if (hdr->e_ident[EI_CLASS] != - (ELF_BITS == 32 ? ELFCLASS32 : ELFCLASS64)) { - return; /* Wrong ELF class -- check ELF_BITS */ - } - - ELF(Phdr) *pt = (ELF(Phdr)*)(vdso_info.load_addr + hdr->e_phoff); - ELF(Dyn) *dyn = 0; - - /* - * We need two things from the segment table: the load offset - * and the dynamic table. - */ - for (i = 0; i < hdr->e_phnum; i++) - { - if (pt[i].p_type == PT_LOAD && !found_vaddr) { - found_vaddr = true; - vdso_info.load_offset = base - + (uintptr_t)pt[i].p_offset - - (uintptr_t)pt[i].p_vaddr; - } else if (pt[i].p_type == PT_DYNAMIC) { - dyn = (ELF(Dyn)*)(base + pt[i].p_offset); - } - } - - if (!found_vaddr || !dyn) - return; /* Failed */ - - /* - * Fish out the useful bits of the dynamic table. - */ - ELF(Word) *hash = 0; - vdso_info.symstrings = 0; - vdso_info.symtab = 0; - vdso_info.versym = 0; - vdso_info.verdef = 0; - for (i = 0; dyn[i].d_tag != DT_NULL; i++) { - switch (dyn[i].d_tag) { - case DT_STRTAB: - vdso_info.symstrings = (const char *) - ((uintptr_t)dyn[i].d_un.d_ptr - + vdso_info.load_offset); - break; - case DT_SYMTAB: - vdso_info.symtab = (ELF(Sym) *) - ((uintptr_t)dyn[i].d_un.d_ptr - + vdso_info.load_offset); - break; - case DT_HASH: - hash = (ELF(Word) *) - ((uintptr_t)dyn[i].d_un.d_ptr - + vdso_info.load_offset); - break; - case DT_VERSYM: - vdso_info.versym = (ELF(Versym) *) - ((uintptr_t)dyn[i].d_un.d_ptr - + vdso_info.load_offset); - break; - case DT_VERDEF: - vdso_info.verdef = (ELF(Verdef) *) - ((uintptr_t)dyn[i].d_un.d_ptr - + vdso_info.load_offset); - break; - } - } - if (!vdso_info.symstrings || !vdso_info.symtab || !hash) - return; /* Failed */ - - if (!vdso_info.verdef) - vdso_info.versym = 0; - - /* Parse the hash table header. */ - vdso_info.nbucket = hash[0]; - vdso_info.nchain = hash[1]; - vdso_info.bucket = &hash[2]; - vdso_info.chain = &hash[vdso_info.nbucket + 2]; - - /* That's all we need. */ - vdso_info.valid = true; -} - -static bool vdso_match_version(ELF(Versym) ver, - const char *name, ELF(Word) hash) -{ - /* - * This is a helper function to check if the version indexed by - * ver matches name (which hashes to hash). - * - * The version definition table is a mess, and I don't know how - * to do this in better than linear time without allocating memory - * to build an index. I also don't know why the table has - * variable size entries in the first place. - * - * For added fun, I can't find a comprehensible specification of how - * to parse all the weird flags in the table. - * - * So I just parse the whole table every time. - */ - - /* First step: find the version definition */ - ver &= 0x7fff; /* Apparently bit 15 means "hidden" */ - ELF(Verdef) *def = vdso_info.verdef; - while(true) { - if ((def->vd_flags & VER_FLG_BASE) == 0 - && (def->vd_ndx & 0x7fff) == ver) - break; - - if (def->vd_next == 0) - return false; /* No definition. */ - - def = (ELF(Verdef) *)((char *)def + def->vd_next); - } - - /* Now figure out whether it matches. */ - ELF(Verdaux) *aux = (ELF(Verdaux)*)((char *)def + def->vd_aux); - return def->vd_hash == hash - && !strcmp(name, vdso_info.symstrings + aux->vda_name); -} - -void *vdso_sym(const char *version, const char *name) -{ - unsigned long ver_hash; - if (!vdso_info.valid) - return 0; - - ver_hash = elf_hash(version); - ELF(Word) chain = vdso_info.bucket[elf_hash(name) % vdso_info.nbucket]; - - for (; chain != STN_UNDEF; chain = vdso_info.chain[chain]) { - ELF(Sym) *sym = &vdso_info.symtab[chain]; - - /* Check for a defined global or weak function w/ right name. */ - if (ELF64_ST_TYPE(sym->st_info) != STT_FUNC) - continue; - if (ELF64_ST_BIND(sym->st_info) != STB_GLOBAL && - ELF64_ST_BIND(sym->st_info) != STB_WEAK) - continue; - if (sym->st_shndx == SHN_UNDEF) - continue; - if (strcmp(name, vdso_info.symstrings + sym->st_name)) - continue; - - /* Check symbol version. */ - if (vdso_info.versym - && !vdso_match_version(vdso_info.versym[chain], - version, ver_hash)) - continue; - - return (void *)(vdso_info.load_offset + sym->st_value); - } - - return 0; -} - -void vdso_init_from_auxv(void *auxv) -{ - ELF(auxv_t) *elf_auxv = auxv; - for (int i = 0; elf_auxv[i].a_type != AT_NULL; i++) - { - if (elf_auxv[i].a_type == AT_SYSINFO_EHDR) { - vdso_init_from_sysinfo_ehdr(elf_auxv[i].a_un.a_val); - return; - } - } - - vdso_info.valid = false; -} diff --git a/Documentation/vDSO/vdso_standalone_test_x86.c b/Documentation/vDSO/vdso_standalone_test_x86.c deleted file mode 100644 index 93b0ebf8cc38..000000000000 --- a/Documentation/vDSO/vdso_standalone_test_x86.c +++ /dev/null @@ -1,128 +0,0 @@ -/* - * vdso_test.c: Sample code to test parse_vdso.c on x86 - * Copyright (c) 2011-2014 Andy Lutomirski - * Subject to the GNU General Public License, version 2 - * - * You can amuse yourself by compiling with: - * gcc -std=gnu99 -nostdlib - * -Os -fno-asynchronous-unwind-tables -flto -lgcc_s - * vdso_standalone_test_x86.c parse_vdso.c - * to generate a small binary. On x86_64, you can omit -lgcc_s - * if you want the binary to be completely standalone. - */ - -#include <sys/syscall.h> -#include <sys/time.h> -#include <unistd.h> -#include <stdint.h> - -extern void *vdso_sym(const char *version, const char *name); -extern void vdso_init_from_sysinfo_ehdr(uintptr_t base); -extern void vdso_init_from_auxv(void *auxv); - -/* We need a libc functions... */ -int strcmp(const char *a, const char *b) -{ - /* This implementation is buggy: it never returns -1. */ - while (*a || *b) { - if (*a != *b) - return 1; - if (*a == 0 || *b == 0) - return 1; - a++; - b++; - } - - return 0; -} - -/* ...and two syscalls. This is x86-specific. */ -static inline long x86_syscall3(long nr, long a0, long a1, long a2) -{ - long ret; -#ifdef __x86_64__ - asm volatile ("syscall" : "=a" (ret) : "a" (nr), - "D" (a0), "S" (a1), "d" (a2) : - "cc", "memory", "rcx", - "r8", "r9", "r10", "r11" ); -#else - asm volatile ("int $0x80" : "=a" (ret) : "a" (nr), - "b" (a0), "c" (a1), "d" (a2) : - "cc", "memory" ); -#endif - return ret; -} - -static inline long linux_write(int fd, const void *data, size_t len) -{ - return x86_syscall3(__NR_write, fd, (long)data, (long)len); -} - -static inline void linux_exit(int code) -{ - x86_syscall3(__NR_exit, code, 0, 0); -} - -void to_base10(char *lastdig, time_t n) -{ - while (n) { - *lastdig = (n % 10) + '0'; - n /= 10; - lastdig--; - } -} - -__attribute__((externally_visible)) void c_main(void **stack) -{ - /* Parse the stack */ - long argc = (long)*stack; - stack += argc + 2; - - /* Now we're pointing at the environment. Skip it. */ - while(*stack) - stack++; - stack++; - - /* Now we're pointing at auxv. Initialize the vDSO parser. */ - vdso_init_from_auxv((void *)stack); - - /* Find gettimeofday. */ - typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz); - gtod_t gtod = (gtod_t)vdso_sym("LINUX_2.6", "__vdso_gettimeofday"); - - if (!gtod) - linux_exit(1); - - struct timeval tv; - long ret = gtod(&tv, 0); - - if (ret == 0) { - char buf[] = "The time is .000000\n"; - to_base10(buf + 31, tv.tv_sec); - to_base10(buf + 38, tv.tv_usec); - linux_write(1, buf, sizeof(buf) - 1); - } else { - linux_exit(ret); - } - - linux_exit(0); -} - -/* - * This is the real entry point. It passes the initial stack into - * the C entry point. - */ -asm ( - ".text\n" - ".global _start\n" - ".type _start,@function\n" - "_start:\n\t" -#ifdef __x86_64__ - "mov %rsp,%rdi\n\t" - "jmp c_main" -#else - "push %esp\n\t" - "call c_main\n\t" - "int $3" -#endif - ); diff --git a/Documentation/vDSO/vdso_test.c b/Documentation/vDSO/vdso_test.c deleted file mode 100644 index 8daeb7d7032c..000000000000 --- a/Documentation/vDSO/vdso_test.c +++ /dev/null @@ -1,52 +0,0 @@ -/* - * vdso_test.c: Sample code to test parse_vdso.c - * Copyright (c) 2014 Andy Lutomirski - * Subject to the GNU General Public License, version 2 - * - * Compile with: - * gcc -std=gnu99 vdso_test.c parse_vdso.c - * - * Tested on x86, 32-bit and 64-bit. It may work on other architectures, too. - */ - -#include <stdint.h> -#include <elf.h> -#include <stdio.h> -#include <sys/auxv.h> -#include <sys/time.h> - -extern void *vdso_sym(const char *version, const char *name); -extern void vdso_init_from_sysinfo_ehdr(uintptr_t base); -extern void vdso_init_from_auxv(void *auxv); - -int main(int argc, char **argv) -{ - unsigned long sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR); - if (!sysinfo_ehdr) { - printf("AT_SYSINFO_EHDR is not present!\n"); - return 0; - } - - vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR)); - - /* Find gettimeofday. */ - typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz); - gtod_t gtod = (gtod_t)vdso_sym("LINUX_2.6", "__vdso_gettimeofday"); - - if (!gtod) { - printf("Could not find __vdso_gettimeofday\n"); - return 1; - } - - struct timeval tv; - long ret = gtod(&tv, 0); - - if (ret == 0) { - printf("The time is %lld.%06lld\n", - (long long)tv.tv_sec, (long long)tv.tv_usec); - } else { - printf("__vdso_gettimeofday failed\n"); - } - - return 0; -} diff --git a/Documentation/watchdog/Makefile b/Documentation/watchdog/Makefile deleted file mode 100644 index 6018f45f2471..000000000000 --- a/Documentation/watchdog/Makefile +++ /dev/null @@ -1 +0,0 @@ -subdir-y := src diff --git a/Documentation/watchdog/src/.gitignore b/Documentation/watchdog/src/.gitignore deleted file mode 100644 index ac90997dba93..000000000000 --- a/Documentation/watchdog/src/.gitignore +++ /dev/null @@ -1,2 +0,0 @@ -watchdog-simple -watchdog-test diff --git a/Documentation/watchdog/src/Makefile b/Documentation/watchdog/src/Makefile deleted file mode 100644 index 4a892c304983..000000000000 --- a/Documentation/watchdog/src/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# List of programs to build -hostprogs-y := watchdog-simple watchdog-test - -# Tell kbuild to always build the programs -always := $(hostprogs-y) diff --git a/Documentation/watchdog/src/watchdog-simple.c b/Documentation/watchdog/src/watchdog-simple.c deleted file mode 100644 index ba45803a2216..000000000000 --- a/Documentation/watchdog/src/watchdog-simple.c +++ /dev/null @@ -1,24 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> - -int main(void) -{ - int fd = open("/dev/watchdog", O_WRONLY); - int ret = 0; - if (fd == -1) { - perror("watchdog"); - exit(EXIT_FAILURE); - } - while (1) { - ret = write(fd, "\0", 1); - if (ret != 1) { - ret = -1; - break; - } - sleep(10); - } - close(fd); - return ret; -} diff --git a/Documentation/watchdog/src/watchdog-test.c b/Documentation/watchdog/src/watchdog-test.c deleted file mode 100644 index 6983d05097e2..000000000000 --- a/Documentation/watchdog/src/watchdog-test.c +++ /dev/null @@ -1,105 +0,0 @@ -/* - * Watchdog Driver Test Program - */ - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <fcntl.h> -#include <signal.h> -#include <sys/ioctl.h> -#include <linux/types.h> -#include <linux/watchdog.h> - -int fd; -const char v = 'V'; - -/* - * This function simply sends an IOCTL to the driver, which in turn ticks - * the PC Watchdog card to reset its internal timer so it doesn't trigger - * a computer reset. - */ -static void keep_alive(void) -{ - int dummy; - - printf("."); - ioctl(fd, WDIOC_KEEPALIVE, &dummy); -} - -/* - * The main program. Run the program with "-d" to disable the card, - * or "-e" to enable the card. - */ - -static void term(int sig) -{ - int ret = write(fd, &v, 1); - - close(fd); - if (ret < 0) - printf("\nStopping watchdog ticks failed (%d)...\n", errno); - else - printf("\nStopping watchdog ticks...\n"); - exit(0); -} - -int main(int argc, char *argv[]) -{ - int flags; - unsigned int ping_rate = 1; - int ret; - - setbuf(stdout, NULL); - - fd = open("/dev/watchdog", O_WRONLY); - - if (fd == -1) { - printf("Watchdog device not enabled.\n"); - exit(-1); - } - - if (argc > 1) { - if (!strncasecmp(argv[1], "-d", 2)) { - flags = WDIOS_DISABLECARD; - ioctl(fd, WDIOC_SETOPTIONS, &flags); - printf("Watchdog card disabled.\n"); - goto end; - } else if (!strncasecmp(argv[1], "-e", 2)) { - flags = WDIOS_ENABLECARD; - ioctl(fd, WDIOC_SETOPTIONS, &flags); - printf("Watchdog card enabled.\n"); - goto end; - } else if (!strncasecmp(argv[1], "-t", 2) && argv[2]) { - flags = atoi(argv[2]); - ioctl(fd, WDIOC_SETTIMEOUT, &flags); - printf("Watchdog timeout set to %u seconds.\n", flags); - goto end; - } else if (!strncasecmp(argv[1], "-p", 2) && argv[2]) { - ping_rate = strtoul(argv[2], NULL, 0); - printf("Watchdog ping rate set to %u seconds.\n", ping_rate); - } else { - printf("-d to disable, -e to enable, -t <n> to set " \ - "the timeout,\n-p <n> to set the ping rate, and \n"); - printf("run by itself to tick the card.\n"); - goto end; - } - } - - printf("Watchdog Ticking Away!\n"); - - signal(SIGINT, term); - - while(1) { - keep_alive(); - sleep(ping_rate); - } -end: - ret = write(fd, &v, 1); - if (ret < 0) - printf("Stopping watchdog ticks failed (%d)...\n", errno); - close(fd); - return 0; -} diff --git a/Documentation/watchdog/watchdog-api.txt b/Documentation/watchdog/watchdog-api.txt index b3a701f48118..0e62ba33b7fb 100644 --- a/Documentation/watchdog/watchdog-api.txt +++ b/Documentation/watchdog/watchdog-api.txt @@ -37,7 +37,7 @@ activates as soon as /dev/watchdog is opened and will reboot unless the watchdog is pinged within a certain time, this time is called the timeout or margin. The simplest way to ping the watchdog is to write some data to the device. So a very simple watchdog daemon would look -like this source file: see Documentation/watchdog/src/watchdog-simple.c +like this source file: see samples/watchdog/watchdog-simple.c A more advanced driver could for example check that a HTTP server is still responding before doing the write call to ping the watchdog. diff --git a/Documentation/watchdog/wdt.txt b/Documentation/watchdog/wdt.txt index 061c2e35384f..ed2f0b860869 100644 --- a/Documentation/watchdog/wdt.txt +++ b/Documentation/watchdog/wdt.txt @@ -47,4 +47,4 @@ The external event interfaces on the WDT boards are not currently supported. Minor numbers are however allocated for it. -Example Watchdog Driver: see Documentation/watchdog/src/watchdog-simple.c +Example Watchdog Driver: see samples/watchdog/watchdog-simple.c |