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-rw-r--r--drivers/scsi/cxlflash/Makefile2
-rw-r--r--drivers/scsi/cxlflash/backend.h41
-rw-r--r--drivers/scsi/cxlflash/common.h8
-rw-r--r--drivers/scsi/cxlflash/cxl_hw.c168
-rw-r--r--drivers/scsi/cxlflash/main.c100
-rw-r--r--drivers/scsi/cxlflash/superpipe.c64
-rw-r--r--drivers/scsi/cxlflash/superpipe.h4
7 files changed, 288 insertions, 99 deletions
diff --git a/drivers/scsi/cxlflash/Makefile b/drivers/scsi/cxlflash/Makefile
index 9e39866d473b..7ec3f6b55dde 100644
--- a/drivers/scsi/cxlflash/Makefile
+++ b/drivers/scsi/cxlflash/Makefile
@@ -1,2 +1,2 @@
obj-$(CONFIG_CXLFLASH) += cxlflash.o
-cxlflash-y += main.o superpipe.o lunmgt.o vlun.o
+cxlflash-y += main.o superpipe.o lunmgt.o vlun.o cxl_hw.o
diff --git a/drivers/scsi/cxlflash/backend.h b/drivers/scsi/cxlflash/backend.h
new file mode 100644
index 000000000000..339e42b03c49
--- /dev/null
+++ b/drivers/scsi/cxlflash/backend.h
@@ -0,0 +1,41 @@
+/*
+ * CXL Flash Device Driver
+ *
+ * Written by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation
+ * Uma Krishnan <ukrishn@linux.vnet.ibm.com>, IBM Corporation
+ *
+ * Copyright (C) 2018 IBM Corporation
+ *
+ * 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.
+ */
+
+extern const struct cxlflash_backend_ops cxlflash_cxl_ops;
+
+struct cxlflash_backend_ops {
+ struct module *module;
+ void __iomem * (*psa_map)(void *);
+ void (*psa_unmap)(void __iomem *);
+ int (*process_element)(void *);
+ int (*map_afu_irq)(void *, int, irq_handler_t, void *, char *);
+ void (*unmap_afu_irq)(void *, int, void *);
+ int (*start_context)(void *);
+ int (*stop_context)(void *);
+ int (*afu_reset)(void *);
+ void (*set_master)(void *);
+ void * (*get_context)(struct pci_dev *, void *);
+ void * (*dev_context_init)(struct pci_dev *, void *);
+ int (*release_context)(void *);
+ void (*perst_reloads_same_image)(void *, bool);
+ ssize_t (*read_adapter_vpd)(struct pci_dev *, void *, size_t);
+ int (*allocate_afu_irqs)(void *, int);
+ void (*free_afu_irqs)(void *);
+ void * (*create_afu)(struct pci_dev *);
+ struct file * (*get_fd)(void *, struct file_operations *, int *);
+ void * (*fops_get_context)(struct file *);
+ int (*start_work)(void *, u64);
+ int (*fd_mmap)(struct file *, struct vm_area_struct *);
+ int (*fd_release)(struct inode *, struct file *);
+};
diff --git a/drivers/scsi/cxlflash/common.h b/drivers/scsi/cxlflash/common.h
index 6d95e8e147e0..102fd26ca886 100644
--- a/drivers/scsi/cxlflash/common.h
+++ b/drivers/scsi/cxlflash/common.h
@@ -25,6 +25,8 @@
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
+#include "backend.h"
+
extern const struct file_operations cxlflash_cxl_fops;
#define MAX_CONTEXT CXLFLASH_MAX_CONTEXT /* num contexts per afu */
@@ -114,6 +116,7 @@ enum cxlflash_hwq_mode {
struct cxlflash_cfg {
struct afu *afu;
+ const struct cxlflash_backend_ops *ops;
struct pci_dev *dev;
struct pci_device_id *dev_id;
struct Scsi_Host *host;
@@ -129,7 +132,7 @@ struct cxlflash_cfg {
int lr_port;
atomic_t scan_host_needed;
- struct cxl_afu *cxl_afu;
+ void *afu_cookie;
atomic_t recovery_threads;
struct mutex ctx_recovery_mutex;
@@ -203,8 +206,7 @@ struct hwq {
* fields after this point
*/
struct afu *afu;
- struct cxl_context *ctx;
- struct cxl_ioctl_start_work work;
+ void *ctx_cookie;
struct sisl_host_map __iomem *host_map; /* MC host map */
struct sisl_ctrl_map __iomem *ctrl_map; /* MC control map */
ctx_hndl_t ctx_hndl; /* master's context handle */
diff --git a/drivers/scsi/cxlflash/cxl_hw.c b/drivers/scsi/cxlflash/cxl_hw.c
new file mode 100644
index 000000000000..db1cadad5c5d
--- /dev/null
+++ b/drivers/scsi/cxlflash/cxl_hw.c
@@ -0,0 +1,168 @@
+/*
+ * CXL Flash Device Driver
+ *
+ * Written by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation
+ * Uma Krishnan <ukrishn@linux.vnet.ibm.com>, IBM Corporation
+ *
+ * Copyright (C) 2018 IBM Corporation
+ *
+ * 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.
+ */
+
+#include <misc/cxl.h>
+
+#include "backend.h"
+
+/*
+ * The following routines map the cxlflash backend operations to existing CXL
+ * kernel API function and are largely simple shims that provide an abstraction
+ * for converting generic context and AFU cookies into cxl_context or cxl_afu
+ * pointers.
+ */
+
+static void __iomem *cxlflash_psa_map(void *ctx_cookie)
+{
+ return cxl_psa_map(ctx_cookie);
+}
+
+static void cxlflash_psa_unmap(void __iomem *addr)
+{
+ cxl_psa_unmap(addr);
+}
+
+static int cxlflash_process_element(void *ctx_cookie)
+{
+ return cxl_process_element(ctx_cookie);
+}
+
+static int cxlflash_map_afu_irq(void *ctx_cookie, int num,
+ irq_handler_t handler, void *cookie, char *name)
+{
+ return cxl_map_afu_irq(ctx_cookie, num, handler, cookie, name);
+}
+
+static void cxlflash_unmap_afu_irq(void *ctx_cookie, int num, void *cookie)
+{
+ cxl_unmap_afu_irq(ctx_cookie, num, cookie);
+}
+
+static int cxlflash_start_context(void *ctx_cookie)
+{
+ return cxl_start_context(ctx_cookie, 0, NULL);
+}
+
+static int cxlflash_stop_context(void *ctx_cookie)
+{
+ return cxl_stop_context(ctx_cookie);
+}
+
+static int cxlflash_afu_reset(void *ctx_cookie)
+{
+ return cxl_afu_reset(ctx_cookie);
+}
+
+static void cxlflash_set_master(void *ctx_cookie)
+{
+ cxl_set_master(ctx_cookie);
+}
+
+static void *cxlflash_get_context(struct pci_dev *dev, void *afu_cookie)
+{
+ return cxl_get_context(dev);
+}
+
+static void *cxlflash_dev_context_init(struct pci_dev *dev, void *afu_cookie)
+{
+ return cxl_dev_context_init(dev);
+}
+
+static int cxlflash_release_context(void *ctx_cookie)
+{
+ return cxl_release_context(ctx_cookie);
+}
+
+static void cxlflash_perst_reloads_same_image(void *afu_cookie, bool image)
+{
+ cxl_perst_reloads_same_image(afu_cookie, image);
+}
+
+static ssize_t cxlflash_read_adapter_vpd(struct pci_dev *dev,
+ void *buf, size_t count)
+{
+ return cxl_read_adapter_vpd(dev, buf, count);
+}
+
+static int cxlflash_allocate_afu_irqs(void *ctx_cookie, int num)
+{
+ return cxl_allocate_afu_irqs(ctx_cookie, num);
+}
+
+static void cxlflash_free_afu_irqs(void *ctx_cookie)
+{
+ cxl_free_afu_irqs(ctx_cookie);
+}
+
+static void *cxlflash_create_afu(struct pci_dev *dev)
+{
+ return cxl_pci_to_afu(dev);
+}
+
+static struct file *cxlflash_get_fd(void *ctx_cookie,
+ struct file_operations *fops, int *fd)
+{
+ return cxl_get_fd(ctx_cookie, fops, fd);
+}
+
+static void *cxlflash_fops_get_context(struct file *file)
+{
+ return cxl_fops_get_context(file);
+}
+
+static int cxlflash_start_work(void *ctx_cookie, u64 irqs)
+{
+ struct cxl_ioctl_start_work work = { 0 };
+
+ work.num_interrupts = irqs;
+ work.flags = CXL_START_WORK_NUM_IRQS;
+
+ return cxl_start_work(ctx_cookie, &work);
+}
+
+static int cxlflash_fd_mmap(struct file *file, struct vm_area_struct *vm)
+{
+ return cxl_fd_mmap(file, vm);
+}
+
+static int cxlflash_fd_release(struct inode *inode, struct file *file)
+{
+ return cxl_fd_release(inode, file);
+}
+
+const struct cxlflash_backend_ops cxlflash_cxl_ops = {
+ .module = THIS_MODULE,
+ .psa_map = cxlflash_psa_map,
+ .psa_unmap = cxlflash_psa_unmap,
+ .process_element = cxlflash_process_element,
+ .map_afu_irq = cxlflash_map_afu_irq,
+ .unmap_afu_irq = cxlflash_unmap_afu_irq,
+ .start_context = cxlflash_start_context,
+ .stop_context = cxlflash_stop_context,
+ .afu_reset = cxlflash_afu_reset,
+ .set_master = cxlflash_set_master,
+ .get_context = cxlflash_get_context,
+ .dev_context_init = cxlflash_dev_context_init,
+ .release_context = cxlflash_release_context,
+ .perst_reloads_same_image = cxlflash_perst_reloads_same_image,
+ .read_adapter_vpd = cxlflash_read_adapter_vpd,
+ .allocate_afu_irqs = cxlflash_allocate_afu_irqs,
+ .free_afu_irqs = cxlflash_free_afu_irqs,
+ .create_afu = cxlflash_create_afu,
+ .get_fd = cxlflash_get_fd,
+ .fops_get_context = cxlflash_fops_get_context,
+ .start_work = cxlflash_start_work,
+ .fd_mmap = cxlflash_fd_mmap,
+ .fd_release = cxlflash_fd_release,
+};
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 38b3a9c84fd1..d8fe7ab870b8 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -620,6 +620,7 @@ static int cxlflash_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scp)
cmd->parent = afu;
cmd->hwq_index = hwq_index;
+ cmd->sa.ioasc = 0;
cmd->rcb.ctx_id = hwq->ctx_hndl;
cmd->rcb.msi = SISL_MSI_RRQ_UPDATED;
cmd->rcb.port_sel = CHAN2PORTMASK(scp->device->channel);
@@ -710,7 +711,7 @@ static void stop_afu(struct cxlflash_cfg *cfg)
}
if (likely(afu->afu_map)) {
- cxl_psa_unmap((void __iomem *)afu->afu_map);
+ cfg->ops->psa_unmap(afu->afu_map);
afu->afu_map = NULL;
}
}
@@ -738,7 +739,7 @@ static void term_intr(struct cxlflash_cfg *cfg, enum undo_level level,
hwq = get_hwq(afu, index);
- if (!hwq->ctx) {
+ if (!hwq->ctx_cookie) {
dev_err(dev, "%s: returning with NULL MC\n", __func__);
return;
}
@@ -747,13 +748,13 @@ static void term_intr(struct cxlflash_cfg *cfg, enum undo_level level,
case UNMAP_THREE:
/* SISL_MSI_ASYNC_ERROR is setup only for the primary HWQ */
if (index == PRIMARY_HWQ)
- cxl_unmap_afu_irq(hwq->ctx, 3, hwq);
+ cfg->ops->unmap_afu_irq(hwq->ctx_cookie, 3, hwq);
case UNMAP_TWO:
- cxl_unmap_afu_irq(hwq->ctx, 2, hwq);
+ cfg->ops->unmap_afu_irq(hwq->ctx_cookie, 2, hwq);
case UNMAP_ONE:
- cxl_unmap_afu_irq(hwq->ctx, 1, hwq);
+ cfg->ops->unmap_afu_irq(hwq->ctx_cookie, 1, hwq);
case FREE_IRQ:
- cxl_free_afu_irqs(hwq->ctx);
+ cfg->ops->free_afu_irqs(hwq->ctx_cookie);
/* fall through */
case UNDO_NOOP:
/* No action required */
@@ -782,15 +783,15 @@ static void term_mc(struct cxlflash_cfg *cfg, u32 index)
hwq = get_hwq(afu, index);
- if (!hwq->ctx) {
+ if (!hwq->ctx_cookie) {
dev_err(dev, "%s: returning with NULL MC\n", __func__);
return;
}
- WARN_ON(cxl_stop_context(hwq->ctx));
+ WARN_ON(cfg->ops->stop_context(hwq->ctx_cookie));
if (index != PRIMARY_HWQ)
- WARN_ON(cxl_release_context(hwq->ctx));
- hwq->ctx = NULL;
+ WARN_ON(cfg->ops->release_context(hwq->ctx_cookie));
+ hwq->ctx_cookie = NULL;
spin_lock_irqsave(&hwq->hsq_slock, lock_flags);
flush_pending_cmds(hwq);
@@ -1598,27 +1599,6 @@ out:
}
/**
- * start_context() - starts the master context
- * @cfg: Internal structure associated with the host.
- * @index: Index of the hardware queue.
- *
- * Return: A success or failure value from CXL services.
- */
-static int start_context(struct cxlflash_cfg *cfg, u32 index)
-{
- struct device *dev = &cfg->dev->dev;
- struct hwq *hwq = get_hwq(cfg->afu, index);
- int rc = 0;
-
- rc = cxl_start_context(hwq->ctx,
- hwq->work.work_element_descriptor,
- NULL);
-
- dev_dbg(dev, "%s: returning rc=%d\n", __func__, rc);
- return rc;
-}
-
-/**
* read_vpd() - obtains the WWPNs from VPD
* @cfg: Internal structure associated with the host.
* @wwpn: Array of size MAX_FC_PORTS to pass back WWPNs
@@ -1640,7 +1620,7 @@ static int read_vpd(struct cxlflash_cfg *cfg, u64 wwpn[])
const char *wwpn_vpd_tags[MAX_FC_PORTS] = { "V5", "V6", "V7", "V8" };
/* Get the VPD data from the device */
- vpd_size = cxl_read_adapter_vpd(pdev, vpd_data, sizeof(vpd_data));
+ vpd_size = cfg->ops->read_adapter_vpd(pdev, vpd_data, sizeof(vpd_data));
if (unlikely(vpd_size <= 0)) {
dev_err(dev, "%s: Unable to read VPD (size = %ld)\n",
__func__, vpd_size);
@@ -1732,6 +1712,7 @@ static void init_pcr(struct cxlflash_cfg *cfg)
struct afu *afu = cfg->afu;
struct sisl_ctrl_map __iomem *ctrl_map;
struct hwq *hwq;
+ void *cookie;
int i;
for (i = 0; i < MAX_CONTEXT; i++) {
@@ -1746,8 +1727,9 @@ static void init_pcr(struct cxlflash_cfg *cfg)
/* Copy frequently used fields into hwq */
for (i = 0; i < afu->num_hwqs; i++) {
hwq = get_hwq(afu, i);
+ cookie = hwq->ctx_cookie;
- hwq->ctx_hndl = (u16) cxl_process_element(hwq->ctx);
+ hwq->ctx_hndl = (u16) cfg->ops->process_element(cookie);
hwq->host_map = &afu->afu_map->hosts[hwq->ctx_hndl].host;
hwq->ctrl_map = &afu->afu_map->ctrls[hwq->ctx_hndl].ctrl;
@@ -1925,13 +1907,13 @@ static enum undo_level init_intr(struct cxlflash_cfg *cfg,
struct hwq *hwq)
{
struct device *dev = &cfg->dev->dev;
- struct cxl_context *ctx = hwq->ctx;
+ void *ctx = hwq->ctx_cookie;
int rc = 0;
enum undo_level level = UNDO_NOOP;
bool is_primary_hwq = (hwq->index == PRIMARY_HWQ);
int num_irqs = is_primary_hwq ? 3 : 2;
- rc = cxl_allocate_afu_irqs(ctx, num_irqs);
+ rc = cfg->ops->allocate_afu_irqs(ctx, num_irqs);
if (unlikely(rc)) {
dev_err(dev, "%s: allocate_afu_irqs failed rc=%d\n",
__func__, rc);
@@ -1939,16 +1921,16 @@ static enum undo_level init_intr(struct cxlflash_cfg *cfg,
goto out;
}
- rc = cxl_map_afu_irq(ctx, 1, cxlflash_sync_err_irq, hwq,
- "SISL_MSI_SYNC_ERROR");
+ rc = cfg->ops->map_afu_irq(ctx, 1, cxlflash_sync_err_irq, hwq,
+ "SISL_MSI_SYNC_ERROR");
if (unlikely(rc <= 0)) {
dev_err(dev, "%s: SISL_MSI_SYNC_ERROR map failed\n", __func__);
level = FREE_IRQ;
goto out;
}
- rc = cxl_map_afu_irq(ctx, 2, cxlflash_rrq_irq, hwq,
- "SISL_MSI_RRQ_UPDATED");
+ rc = cfg->ops->map_afu_irq(ctx, 2, cxlflash_rrq_irq, hwq,
+ "SISL_MSI_RRQ_UPDATED");
if (unlikely(rc <= 0)) {
dev_err(dev, "%s: SISL_MSI_RRQ_UPDATED map failed\n", __func__);
level = UNMAP_ONE;
@@ -1959,8 +1941,8 @@ static enum undo_level init_intr(struct cxlflash_cfg *cfg,
if (!is_primary_hwq)
goto out;
- rc = cxl_map_afu_irq(ctx, 3, cxlflash_async_err_irq, hwq,
- "SISL_MSI_ASYNC_ERROR");
+ rc = cfg->ops->map_afu_irq(ctx, 3, cxlflash_async_err_irq, hwq,
+ "SISL_MSI_ASYNC_ERROR");
if (unlikely(rc <= 0)) {
dev_err(dev, "%s: SISL_MSI_ASYNC_ERROR map failed\n", __func__);
level = UNMAP_TWO;
@@ -1979,7 +1961,7 @@ out:
*/
static int init_mc(struct cxlflash_cfg *cfg, u32 index)
{
- struct cxl_context *ctx;
+ void *ctx;
struct device *dev = &cfg->dev->dev;
struct hwq *hwq = get_hwq(cfg->afu, index);
int rc = 0;
@@ -1990,23 +1972,23 @@ static int init_mc(struct cxlflash_cfg *cfg, u32 index)
INIT_LIST_HEAD(&hwq->pending_cmds);
if (index == PRIMARY_HWQ)
- ctx = cxl_get_context(cfg->dev);
+ ctx = cfg->ops->get_context(cfg->dev, cfg->afu_cookie);
else
- ctx = cxl_dev_context_init(cfg->dev);
- if (unlikely(!ctx)) {
+ ctx = cfg->ops->dev_context_init(cfg->dev, cfg->afu_cookie);
+ if (IS_ERR_OR_NULL(ctx)) {
rc = -ENOMEM;
goto err1;
}
- WARN_ON(hwq->ctx);
- hwq->ctx = ctx;
+ WARN_ON(hwq->ctx_cookie);
+ hwq->ctx_cookie = ctx;
/* Set it up as a master with the CXL */
- cxl_set_master(ctx);
+ cfg->ops->set_master(ctx);
/* Reset AFU when initializing primary context */
if (index == PRIMARY_HWQ) {
- rc = cxl_afu_reset(ctx);
+ rc = cfg->ops->afu_reset(ctx);
if (unlikely(rc)) {
dev_err(dev, "%s: AFU reset failed rc=%d\n",
__func__, rc);
@@ -2020,11 +2002,8 @@ static int init_mc(struct cxlflash_cfg *cfg, u32 index)
goto err2;
}
- /* This performs the equivalent of the CXL_IOCTL_START_WORK.
- * The CXL_IOCTL_GET_PROCESS_ELEMENT is implicit in the process
- * element (pe) that is embedded in the context (ctx)
- */
- rc = start_context(cfg, index);
+ /* Finally, activate the context by starting it */
+ rc = cfg->ops->start_context(hwq->ctx_cookie);
if (unlikely(rc)) {
dev_err(dev, "%s: start context failed rc=%d\n", __func__, rc);
level = UNMAP_THREE;
@@ -2037,9 +2016,9 @@ out:
err2:
term_intr(cfg, level, index);
if (index != PRIMARY_HWQ)
- cxl_release_context(ctx);
+ cfg->ops->release_context(ctx);
err1:
- hwq->ctx = NULL;
+ hwq->ctx_cookie = NULL;
goto out;
}
@@ -2094,7 +2073,7 @@ static int init_afu(struct cxlflash_cfg *cfg)
struct hwq *hwq;
int i;
- cxl_perst_reloads_same_image(cfg->cxl_afu, true);
+ cfg->ops->perst_reloads_same_image(cfg->afu_cookie, true);
afu->num_hwqs = afu->desired_hwqs;
for (i = 0; i < afu->num_hwqs; i++) {
@@ -2108,9 +2087,9 @@ static int init_afu(struct cxlflash_cfg *cfg)
/* Map the entire MMIO space of the AFU using the first context */
hwq = get_hwq(afu, PRIMARY_HWQ);
- afu->afu_map = cxl_psa_map(hwq->ctx);
+ afu->afu_map = cfg->ops->psa_map(hwq->ctx_cookie);
if (!afu->afu_map) {
- dev_err(dev, "%s: cxl_psa_map failed\n", __func__);
+ dev_err(dev, "%s: psa_map failed\n", __func__);
rc = -ENOMEM;
goto err1;
}
@@ -3670,6 +3649,7 @@ static int cxlflash_probe(struct pci_dev *pdev,
cfg->init_state = INIT_STATE_NONE;
cfg->dev = pdev;
+ cfg->ops = &cxlflash_cxl_ops;
cfg->cxl_fops = cxlflash_cxl_fops;
/*
@@ -3701,7 +3681,7 @@ static int cxlflash_probe(struct pci_dev *pdev,
pci_set_drvdata(pdev, cfg);
- cfg->cxl_afu = cxl_pci_to_afu(pdev);
+ cfg->afu_cookie = cfg->ops->create_afu(pdev);
rc = init_pci(cfg);
if (rc) {
diff --git a/drivers/scsi/cxlflash/superpipe.c b/drivers/scsi/cxlflash/superpipe.c
index 170fff5aeff6..2fe79df5c73c 100644
--- a/drivers/scsi/cxlflash/superpipe.c
+++ b/drivers/scsi/cxlflash/superpipe.c
@@ -810,20 +810,22 @@ err:
* init_context() - initializes a previously allocated context
* @ctxi: Previously allocated context
* @cfg: Internal structure associated with the host.
- * @ctx: Previously obtained CXL context reference.
+ * @ctx: Previously obtained context cookie.
* @ctxid: Previously obtained process element associated with CXL context.
* @file: Previously obtained file associated with CXL context.
* @perms: User-specified permissions.
+ * @irqs: User-specified number of interrupts.
*/
static void init_context(struct ctx_info *ctxi, struct cxlflash_cfg *cfg,
- struct cxl_context *ctx, int ctxid, struct file *file,
- u32 perms)
+ void *ctx, int ctxid, struct file *file, u32 perms,
+ u64 irqs)
{
struct afu *afu = cfg->afu;
ctxi->rht_perms = perms;
ctxi->ctrl_map = &afu->afu_map->ctrls[ctxid].ctrl;
ctxi->ctxid = ENCODE_CTXID(ctxi, ctxid);
+ ctxi->irqs = irqs;
ctxi->pid = task_tgid_nr(current); /* tgid = pid */
ctxi->ctx = ctx;
ctxi->cfg = cfg;
@@ -976,9 +978,9 @@ static int cxlflash_disk_detach(struct scsi_device *sdev,
*/
static int cxlflash_cxl_release(struct inode *inode, struct file *file)
{
- struct cxl_context *ctx = cxl_fops_get_context(file);
struct cxlflash_cfg *cfg = container_of(file->f_op, struct cxlflash_cfg,
cxl_fops);
+ void *ctx = cfg->ops->fops_get_context(file);
struct device *dev = &cfg->dev->dev;
struct ctx_info *ctxi = NULL;
struct dk_cxlflash_detach detach = { { 0 }, 0 };
@@ -986,7 +988,7 @@ static int cxlflash_cxl_release(struct inode *inode, struct file *file)
enum ctx_ctrl ctrl = CTX_CTRL_ERR_FALLBACK | CTX_CTRL_FILE;
int ctxid;
- ctxid = cxl_process_element(ctx);
+ ctxid = cfg->ops->process_element(ctx);
if (unlikely(ctxid < 0)) {
dev_err(dev, "%s: Context %p was closed ctxid=%d\n",
__func__, ctx, ctxid);
@@ -1014,7 +1016,7 @@ static int cxlflash_cxl_release(struct inode *inode, struct file *file)
list_for_each_entry_safe(lun_access, t, &ctxi->luns, list)
_cxlflash_disk_detach(lun_access->sdev, ctxi, &detach);
out_release:
- cxl_fd_release(inode, file);
+ cfg->ops->fd_release(inode, file);
out:
dev_dbg(dev, "%s: returning\n", __func__);
return 0;
@@ -1089,9 +1091,9 @@ static int cxlflash_mmap_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct file *file = vma->vm_file;
- struct cxl_context *ctx = cxl_fops_get_context(file);
struct cxlflash_cfg *cfg = container_of(file->f_op, struct cxlflash_cfg,
cxl_fops);
+ void *ctx = cfg->ops->fops_get_context(file);
struct device *dev = &cfg->dev->dev;
struct ctx_info *ctxi = NULL;
struct page *err_page = NULL;
@@ -1099,7 +1101,7 @@ static int cxlflash_mmap_fault(struct vm_fault *vmf)
int rc = 0;
int ctxid;
- ctxid = cxl_process_element(ctx);
+ ctxid = cfg->ops->process_element(ctx);
if (unlikely(ctxid < 0)) {
dev_err(dev, "%s: Context %p was closed ctxid=%d\n",
__func__, ctx, ctxid);
@@ -1162,16 +1164,16 @@ static const struct vm_operations_struct cxlflash_mmap_vmops = {
*/
static int cxlflash_cxl_mmap(struct file *file, struct vm_area_struct *vma)
{
- struct cxl_context *ctx = cxl_fops_get_context(file);
struct cxlflash_cfg *cfg = container_of(file->f_op, struct cxlflash_cfg,
cxl_fops);
+ void *ctx = cfg->ops->fops_get_context(file);
struct device *dev = &cfg->dev->dev;
struct ctx_info *ctxi = NULL;
enum ctx_ctrl ctrl = CTX_CTRL_ERR_FALLBACK | CTX_CTRL_FILE;
int ctxid;
int rc = 0;
- ctxid = cxl_process_element(ctx);
+ ctxid = cfg->ops->process_element(ctx);
if (unlikely(ctxid < 0)) {
dev_err(dev, "%s: Context %p was closed ctxid=%d\n",
__func__, ctx, ctxid);
@@ -1188,7 +1190,7 @@ static int cxlflash_cxl_mmap(struct file *file, struct vm_area_struct *vma)
dev_dbg(dev, "%s: mmap for context %d\n", __func__, ctxid);
- rc = cxl_fd_mmap(file, vma);
+ rc = cfg->ops->fd_mmap(file, vma);
if (likely(!rc)) {
/* Insert ourself in the mmap fault handler path */
ctxi->cxl_mmap_vmops = vma->vm_ops;
@@ -1307,23 +1309,23 @@ static int cxlflash_disk_attach(struct scsi_device *sdev,
struct afu *afu = cfg->afu;
struct llun_info *lli = sdev->hostdata;
struct glun_info *gli = lli->parent;
- struct cxl_ioctl_start_work *work;
struct ctx_info *ctxi = NULL;
struct lun_access *lun_access = NULL;
int rc = 0;
u32 perms;
int ctxid = -1;
+ u64 irqs = attach->num_interrupts;
u64 flags = 0UL;
u64 rctxid = 0UL;
struct file *file = NULL;
- struct cxl_context *ctx = NULL;
+ void *ctx = NULL;
int fd = -1;
- if (attach->num_interrupts > 4) {
+ if (irqs > 4) {
dev_dbg(dev, "%s: Cannot support this many interrupts %llu\n",
- __func__, attach->num_interrupts);
+ __func__, irqs);
rc = -EINVAL;
goto out;
}
@@ -1394,7 +1396,7 @@ static int cxlflash_disk_attach(struct scsi_device *sdev,
goto err;
}
- ctx = cxl_dev_context_init(cfg->dev);
+ ctx = cfg->ops->dev_context_init(cfg->dev, cfg->afu_cookie);
if (IS_ERR_OR_NULL(ctx)) {
dev_err(dev, "%s: Could not initialize context %p\n",
__func__, ctx);
@@ -1402,25 +1404,21 @@ static int cxlflash_disk_attach(struct scsi_device *sdev,
goto err;
}
- work = &ctxi->work;
- work->num_interrupts = attach->num_interrupts;
- work->flags = CXL_START_WORK_NUM_IRQS;
-
- rc = cxl_start_work(ctx, work);
+ rc = cfg->ops->start_work(ctx, irqs);
if (unlikely(rc)) {
dev_dbg(dev, "%s: Could not start context rc=%d\n",
__func__, rc);
goto err;
}
- ctxid = cxl_process_element(ctx);
+ ctxid = cfg->ops->process_element(ctx);
if (unlikely((ctxid >= MAX_CONTEXT) || (ctxid < 0))) {
dev_err(dev, "%s: ctxid=%d invalid\n", __func__, ctxid);
rc = -EPERM;
goto err;
}
- file = cxl_get_fd(ctx, &cfg->cxl_fops, &fd);
+ file = cfg->ops->get_fd(ctx, &cfg->cxl_fops, &fd);
if (unlikely(fd < 0)) {
rc = -ENODEV;
dev_err(dev, "%s: Could not get file descriptor\n", __func__);
@@ -1431,7 +1429,7 @@ static int cxlflash_disk_attach(struct scsi_device *sdev,
perms = SISL_RHT_PERM(attach->hdr.flags + 1);
/* Context mutex is locked upon return */
- init_context(ctxi, cfg, ctx, ctxid, file, perms);
+ init_context(ctxi, cfg, ctx, ctxid, file, perms, irqs);
rc = afu_attach(cfg, ctxi);
if (unlikely(rc)) {
@@ -1479,8 +1477,8 @@ out:
err:
/* Cleanup CXL context; okay to 'stop' even if it was not started */
if (!IS_ERR_OR_NULL(ctx)) {
- cxl_stop_context(ctx);
- cxl_release_context(ctx);
+ cfg->ops->stop_context(ctx);
+ cfg->ops->release_context(ctx);
ctx = NULL;
}
@@ -1529,10 +1527,10 @@ static int recover_context(struct cxlflash_cfg *cfg,
int fd = -1;
int ctxid = -1;
struct file *file;
- struct cxl_context *ctx;
+ void *ctx;
struct afu *afu = cfg->afu;
- ctx = cxl_dev_context_init(cfg->dev);
+ ctx = cfg->ops->dev_context_init(cfg->dev, cfg->afu_cookie);
if (IS_ERR_OR_NULL(ctx)) {
dev_err(dev, "%s: Could not initialize context %p\n",
__func__, ctx);
@@ -1540,21 +1538,21 @@ static int recover_context(struct cxlflash_cfg *cfg,
goto out;
}
- rc = cxl_start_work(ctx, &ctxi->work);
+ rc = cfg->ops->start_work(ctx, ctxi->irqs);
if (unlikely(rc)) {
dev_dbg(dev, "%s: Could not start context rc=%d\n",
__func__, rc);
goto err1;
}
- ctxid = cxl_process_element(ctx);
+ ctxid = cfg->ops->process_element(ctx);
if (unlikely((ctxid >= MAX_CONTEXT) || (ctxid < 0))) {
dev_err(dev, "%s: ctxid=%d invalid\n", __func__, ctxid);
rc = -EPERM;
goto err2;
}
- file = cxl_get_fd(ctx, &cfg->cxl_fops, &fd);
+ file = cfg->ops->get_fd(ctx, &cfg->cxl_fops, &fd);
if (unlikely(fd < 0)) {
rc = -ENODEV;
dev_err(dev, "%s: Could not get file descriptor\n", __func__);
@@ -1601,9 +1599,9 @@ err3:
fput(file);
put_unused_fd(fd);
err2:
- cxl_stop_context(ctx);
+ cfg->ops->stop_context(ctx);
err1:
- cxl_release_context(ctx);
+ cfg->ops->release_context(ctx);
goto out;
}
diff --git a/drivers/scsi/cxlflash/superpipe.h b/drivers/scsi/cxlflash/superpipe.h
index 0b5976829913..35c3cbf83fb5 100644
--- a/drivers/scsi/cxlflash/superpipe.h
+++ b/drivers/scsi/cxlflash/superpipe.h
@@ -96,15 +96,15 @@ struct ctx_info {
struct llun_info **rht_lun; /* Mapping of RHT entries to LUNs */
u8 *rht_needs_ws; /* User-desired write-same function per RHTE */
- struct cxl_ioctl_start_work work;
u64 ctxid;
+ u64 irqs; /* Number of interrupts requested for context */
pid_t pid;
bool initialized;
bool unavail;
bool err_recovery_active;
struct mutex mutex; /* Context protection */
struct kref kref;
- struct cxl_context *ctx;
+ void *ctx;
struct cxlflash_cfg *cfg;
struct list_head luns; /* LUNs attached to this context */
const struct vm_operations_struct *cxl_mmap_vmops;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 10:37:51 +0000