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-rw-r--r--drivers/net/ehea/ehea.h23
-rw-r--r--drivers/net/ehea/ehea_main.c144
-rw-r--r--drivers/net/ehea/ehea_phyp.h3
-rw-r--r--drivers/net/ehea/ehea_qmr.c156
-rw-r--r--drivers/net/ehea/ehea_qmr.h14
5 files changed, 275 insertions, 65 deletions
diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
index f03f070451de..6628fa622e2c 100644
--- a/drivers/net/ehea/ehea.h
+++ b/drivers/net/ehea/ehea.h
@@ -39,13 +39,13 @@
#include <asm/io.h>
#define DRV_NAME "ehea"
-#define DRV_VERSION "EHEA_0067"
+#define DRV_VERSION "EHEA_0070"
-/* EHEA capability flags */
+/* eHEA capability flags */
#define DLPAR_PORT_ADD_REM 1
-#define DLPAR_MEM_ADD 2
-#define DLPAR_MEM_REM 4
-#define EHEA_CAPABILITIES (DLPAR_PORT_ADD_REM)
+#define DLPAR_MEM_ADD 2
+#define DLPAR_MEM_REM 4
+#define EHEA_CAPABILITIES (DLPAR_PORT_ADD_REM)
#define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \
| NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
@@ -113,6 +113,8 @@
/* Memory Regions */
#define EHEA_MR_ACC_CTRL 0x00800000
+#define EHEA_BUSMAP_START 0x8000000000000000ULL
+
#define EHEA_WATCH_DOG_TIMEOUT 10*HZ
/* utility functions */
@@ -186,6 +188,12 @@ struct h_epas {
set to 0 if unused */
};
+struct ehea_busmap {
+ unsigned int entries; /* total number of entries */
+ unsigned int valid_sections; /* number of valid sections */
+ u64 *vaddr;
+};
+
struct ehea_qp;
struct ehea_cq;
struct ehea_eq;
@@ -382,6 +390,8 @@ struct ehea_adapter {
struct ehea_mr mr;
u32 pd; /* protection domain */
u64 max_mc_mac; /* max number of multicast mac addresses */
+ int active_ports;
+ struct list_head list;
};
@@ -431,6 +441,9 @@ struct port_res_cfg {
int max_entries_rq3;
};
+enum ehea_flag_bits {
+ __EHEA_STOP_XFER
+};
void ehea_set_ethtool_ops(struct net_device *netdev);
int ehea_sense_port_attr(struct ehea_port *port);
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 383144db4d18..1d1571cf322e 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -79,6 +79,11 @@ MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 1 ");
static int port_name_cnt = 0;
+static LIST_HEAD(adapter_list);
+u64 ehea_driver_flags = 0;
+struct workqueue_struct *ehea_driver_wq;
+struct work_struct ehea_rereg_mr_task;
+
static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
const struct of_device_id *id);
@@ -238,13 +243,17 @@ static int ehea_refill_rq_def(struct ehea_port_res *pr,
rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
| EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
- rwqe->sg_list[0].vaddr = (u64)skb->data;
+ rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
rwqe->sg_list[0].len = packet_size;
rwqe->data_segments = 1;
index++;
index &= max_index_mask;
+
+ if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
+ goto out;
}
+
q_skba->index = index;
/* Ring doorbell */
@@ -253,7 +262,7 @@ static int ehea_refill_rq_def(struct ehea_port_res *pr,
ehea_update_rq2a(pr->qp, i);
else
ehea_update_rq3a(pr->qp, i);
-
+out:
return ret;
}
@@ -1321,7 +1330,7 @@ static void write_swqe2_TSO(struct sk_buff *skb,
sg1entry->len = skb_data_size - headersize;
tmp_addr = (u64)(skb->data + headersize);
- sg1entry->vaddr = tmp_addr;
+ sg1entry->vaddr = ehea_map_vaddr(tmp_addr);
swqe->descriptors++;
}
} else
@@ -1352,7 +1361,7 @@ static void write_swqe2_nonTSO(struct sk_buff *skb,
sg1entry->l_key = lkey;
sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
- sg1entry->vaddr = tmp_addr;
+ sg1entry->vaddr = ehea_map_vaddr(tmp_addr);
swqe->descriptors++;
}
} else {
@@ -1391,7 +1400,7 @@ static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
sg1entry->len = frag->size;
tmp_addr = (u64)(page_address(frag->page)
+ frag->page_offset);
- sg1entry->vaddr = tmp_addr;
+ sg1entry->vaddr = ehea_map_vaddr(tmp_addr);
swqe->descriptors++;
sg1entry_contains_frag_data = 1;
}
@@ -1406,7 +1415,7 @@ static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
tmp_addr = (u64)(page_address(frag->page)
+ frag->page_offset);
- sgentry->vaddr = tmp_addr;
+ sgentry->vaddr = ehea_map_vaddr(tmp_addr);
swqe->descriptors++;
}
}
@@ -1878,6 +1887,9 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
ehea_dump(swqe, 512, "swqe");
}
+ if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags)))
+ goto out;
+
ehea_post_swqe(pr->qp, swqe);
pr->tx_packets++;
@@ -1892,7 +1904,7 @@ static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
}
dev->trans_start = jiffies;
spin_unlock(&pr->xmit_lock);
-
+out:
return NETDEV_TX_OK;
}
@@ -2220,6 +2232,9 @@ out_dereg_bc:
out_clean_pr:
ehea_clean_all_portres(port);
out:
+ if (ret)
+ ehea_info("Failed starting %s. ret=%i", dev->name, ret);
+
return ret;
}
@@ -2259,8 +2274,13 @@ static int ehea_down(struct net_device *dev)
msleep(1);
ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
- ret = ehea_clean_all_portres(port);
port->state = EHEA_PORT_DOWN;
+
+ ret = ehea_clean_all_portres(port);
+ if (ret)
+ ehea_info("Failed freeing resources for %s. ret=%i",
+ dev->name, ret);
+
return ret;
}
@@ -2292,15 +2312,11 @@ static void ehea_reset_port(struct work_struct *work)
netif_stop_queue(dev);
netif_poll_disable(dev);
- ret = ehea_down(dev);
- if (ret)
- ehea_error("ehea_down failed. not all resources are freed");
+ ehea_down(dev);
ret = ehea_up(dev);
- if (ret) {
- ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
+ if (ret)
goto out;
- }
if (netif_msg_timer(port))
ehea_info("Device %s resetted successfully", dev->name);
@@ -2312,6 +2328,88 @@ out:
return;
}
+static void ehea_rereg_mrs(struct work_struct *work)
+{
+ int ret, i;
+ struct ehea_adapter *adapter;
+
+ ehea_info("LPAR memory enlarged - re-initializing driver");
+
+ list_for_each_entry(adapter, &adapter_list, list)
+ if (adapter->active_ports) {
+ /* Shutdown all ports */
+ for (i = 0; i < EHEA_MAX_PORTS; i++) {
+ struct ehea_port *port = adapter->port[i];
+
+ if (port) {
+ struct net_device *dev = port->netdev;
+
+ if (dev->flags & IFF_UP) {
+ ehea_info("stopping %s",
+ dev->name);
+ down(&port->port_lock);
+ netif_stop_queue(dev);
+ netif_poll_disable(dev);
+ ehea_down(dev);
+ up(&port->port_lock);
+ }
+ }
+ }
+
+ /* Unregister old memory region */
+ ret = ehea_rem_mr(&adapter->mr);
+ if (ret) {
+ ehea_error("unregister MR failed - driver"
+ " inoperable!");
+ goto out;
+ }
+ }
+
+ ehea_destroy_busmap();
+
+ ret = ehea_create_busmap();
+ if (ret)
+ goto out;
+
+ clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
+
+ list_for_each_entry(adapter, &adapter_list, list)
+ if (adapter->active_ports) {
+ /* Register new memory region */
+ ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
+ if (ret) {
+ ehea_error("register MR failed - driver"
+ " inoperable!");
+ goto out;
+ }
+
+ /* Restart all ports */
+ for (i = 0; i < EHEA_MAX_PORTS; i++) {
+ struct ehea_port *port = adapter->port[i];
+
+ if (port) {
+ struct net_device *dev = port->netdev;
+
+ if (dev->flags & IFF_UP) {
+ ehea_info("restarting %s",
+ dev->name);
+ down(&port->port_lock);
+
+ ret = ehea_up(dev);
+ if (!ret) {
+ netif_poll_enable(dev);
+ netif_wake_queue(dev);
+ }
+
+ up(&port->port_lock);
+ }
+ }
+ }
+ }
+out:
+ return;
+}
+
static void ehea_tx_watchdog(struct net_device *dev)
{
struct ehea_port *port = netdev_priv(dev);
@@ -2573,6 +2671,8 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
ehea_info("%s: Jumbo frames are %sabled", dev->name,
jumbo == 1 ? "en" : "dis");
+ adapter->active_ports++;
+
return port;
out_unreg_port:
@@ -2596,6 +2696,7 @@ static void ehea_shutdown_single_port(struct ehea_port *port)
ehea_unregister_port(port);
kfree(port->mc_list);
free_netdev(port->netdev);
+ port->adapter->active_ports--;
}
static int ehea_setup_ports(struct ehea_adapter *adapter)
@@ -2788,6 +2889,8 @@ static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
goto out;
}
+ list_add(&adapter->list, &adapter_list);
+
adapter->ebus_dev = dev;
adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle",
@@ -2891,7 +2994,10 @@ static int __devexit ehea_remove(struct ibmebus_dev *dev)
ehea_destroy_eq(adapter->neq);
ehea_remove_adapter_mr(adapter);
+ list_del(&adapter->list);
+
kfree(adapter);
+
return 0;
}
@@ -2939,9 +3045,18 @@ int __init ehea_module_init(void)
printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
DRV_VERSION);
+ ehea_driver_wq = create_workqueue("ehea_driver_wq");
+
+ INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
+
ret = check_module_parm();
if (ret)
goto out;
+
+ ret = ehea_create_busmap();
+ if (ret)
+ goto out;
+
ret = ibmebus_register_driver(&ehea_driver);
if (ret) {
ehea_error("failed registering eHEA device driver on ebus");
@@ -2965,6 +3080,7 @@ static void __exit ehea_module_exit(void)
{
driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
ibmebus_unregister_driver(&ehea_driver);
+ ehea_destroy_busmap();
}
module_init(ehea_module_init);
diff --git a/drivers/net/ehea/ehea_phyp.h b/drivers/net/ehea/ehea_phyp.h
index d17a45a7e717..89b63531ff26 100644
--- a/drivers/net/ehea/ehea_phyp.h
+++ b/drivers/net/ehea/ehea_phyp.h
@@ -60,6 +60,9 @@ static inline u32 get_longbusy_msecs(int long_busy_ret_code)
}
}
+/* Number of pages which can be registered at once by H_REGISTER_HEA_RPAGES */
+#define EHEA_MAX_RPAGE 512
+
/* Notification Event Queue (NEQ) Entry bit masks */
#define NEQE_EVENT_CODE EHEA_BMASK_IBM(2, 7)
#define NEQE_PORTNUM EHEA_BMASK_IBM(32, 47)
diff --git a/drivers/net/ehea/ehea_qmr.c b/drivers/net/ehea/ehea_qmr.c
index 29eaa46948b0..a36fa6c23fdf 100644
--- a/drivers/net/ehea/ehea_qmr.c
+++ b/drivers/net/ehea/ehea_qmr.c
@@ -31,6 +31,13 @@
#include "ehea_phyp.h"
#include "ehea_qmr.h"
+
+struct ehea_busmap ehea_bmap = { 0, 0, NULL };
+extern u64 ehea_driver_flags;
+extern struct workqueue_struct *ehea_driver_wq;
+extern struct work_struct ehea_rereg_mr_task;
+
+
static void *hw_qpageit_get_inc(struct hw_queue *queue)
{
void *retvalue = hw_qeit_get(queue);
@@ -547,18 +554,84 @@ int ehea_destroy_qp(struct ehea_qp *qp)
return 0;
}
+int ehea_create_busmap( void )
+{
+ u64 vaddr = EHEA_BUSMAP_START;
+ unsigned long abs_max_pfn = 0;
+ unsigned long sec_max_pfn;
+ int i;
+
+ /*
+ * Sections are not in ascending order -> Loop over all sections and
+ * find the highest PFN to compute the required map size.
+ */
+ ehea_bmap.valid_sections = 0;
+
+ for (i = 0; i < NR_MEM_SECTIONS; i++)
+ if (valid_section_nr(i)) {
+ sec_max_pfn = section_nr_to_pfn(i);
+ if (sec_max_pfn > abs_max_pfn)
+ abs_max_pfn = sec_max_pfn;
+ ehea_bmap.valid_sections++;
+ }
+
+ ehea_bmap.entries = abs_max_pfn / EHEA_PAGES_PER_SECTION + 1;
+ ehea_bmap.vaddr = vmalloc(ehea_bmap.entries * sizeof(*ehea_bmap.vaddr));
+
+ if (!ehea_bmap.vaddr)
+ return -ENOMEM;
+
+ for (i = 0 ; i < ehea_bmap.entries; i++) {
+ unsigned long pfn = section_nr_to_pfn(i);
+
+ if (pfn_valid(pfn)) {
+ ehea_bmap.vaddr[i] = vaddr;
+ vaddr += EHEA_SECTSIZE;
+ } else
+ ehea_bmap.vaddr[i] = 0;
+ }
+
+ return 0;
+}
+
+void ehea_destroy_busmap( void )
+{
+ vfree(ehea_bmap.vaddr);
+}
+
+u64 ehea_map_vaddr(void *caddr)
+{
+ u64 mapped_addr;
+ unsigned long index = __pa(caddr) >> SECTION_SIZE_BITS;
+
+ if (likely(index < ehea_bmap.entries)) {
+ mapped_addr = ehea_bmap.vaddr[index];
+ if (likely(mapped_addr))
+ mapped_addr |= (((unsigned long)caddr)
+ & (EHEA_SECTSIZE - 1));
+ else
+ mapped_addr = -1;
+ } else
+ mapped_addr = -1;
+
+ if (unlikely(mapped_addr == -1))
+ if (!test_and_set_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
+ queue_work(ehea_driver_wq, &ehea_rereg_mr_task);
+
+ return mapped_addr;
+}
+
int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr)
{
- int i, k, ret;
- u64 hret, pt_abs, start, end, nr_pages;
- u32 acc_ctrl = EHEA_MR_ACC_CTRL;
+ int ret;
u64 *pt;
+ void *pg;
+ u64 hret, pt_abs, i, j, m, mr_len;
+ u32 acc_ctrl = EHEA_MR_ACC_CTRL;
- start = KERNELBASE;
- end = (u64)high_memory;
- nr_pages = (end - start) / EHEA_PAGESIZE;
+ mr_len = ehea_bmap.valid_sections * EHEA_SECTSIZE;
- pt = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ pt = kzalloc(EHEA_MAX_RPAGE * sizeof(u64), GFP_KERNEL);
if (!pt) {
ehea_error("no mem");
ret = -ENOMEM;
@@ -566,7 +639,8 @@ int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr)
}
pt_abs = virt_to_abs(pt);
- hret = ehea_h_alloc_resource_mr(adapter->handle, start, end - start,
+ hret = ehea_h_alloc_resource_mr(adapter->handle,
+ EHEA_BUSMAP_START, mr_len,
acc_ctrl, adapter->pd,
&mr->handle, &mr->lkey);
if (hret != H_SUCCESS) {
@@ -575,49 +649,43 @@ int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr)
goto out;
}
- mr->vaddr = KERNELBASE;
- k = 0;
-
- while (nr_pages > 0) {
- if (nr_pages > 1) {
- u64 num_pages = min(nr_pages, (u64)512);
- for (i = 0; i < num_pages; i++)
- pt[i] = virt_to_abs((void*)(((u64)start) +
- ((k++) *
- EHEA_PAGESIZE)));
-
- hret = ehea_h_register_rpage_mr(adapter->handle,
- mr->handle, 0,
- 0, (u64)pt_abs,
- num_pages);
- nr_pages -= num_pages;
- } else {
- u64 abs_adr = virt_to_abs((void*)(((u64)start) +
- (k * EHEA_PAGESIZE)));
-
- hret = ehea_h_register_rpage_mr(adapter->handle,
- mr->handle, 0,
- 0, abs_adr,1);
- nr_pages--;
- }
-
- if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED)) {
- ehea_h_free_resource(adapter->handle,
- mr->handle, FORCE_FREE);
- ehea_error("register_rpage_mr failed");
- ret = -EIO;
- goto out;
+ for (i = 0 ; i < ehea_bmap.entries; i++)
+ if (ehea_bmap.vaddr[i]) {
+ void *sectbase = __va(i << SECTION_SIZE_BITS);
+ unsigned long k = 0;
+
+ for (j = 0; j < (PAGES_PER_SECTION / EHEA_MAX_RPAGE);
+ j++) {
+
+ for (m = 0; m < EHEA_MAX_RPAGE; m++) {
+ pg = sectbase + ((k++) * EHEA_PAGESIZE);
+ pt[m] = virt_to_abs(pg);
+ }
+
+ hret = ehea_h_register_rpage_mr(adapter->handle,
+ mr->handle,
+ 0, 0, pt_abs,
+ EHEA_MAX_RPAGE);
+ if ((hret != H_SUCCESS)
+ && (hret != H_PAGE_REGISTERED)) {
+ ehea_h_free_resource(adapter->handle,
+ mr->handle,
+ FORCE_FREE);
+ ehea_error("register_rpage_mr failed");
+ ret = -EIO;
+ goto out;
+ }
+ }
}
- }
if (hret != H_SUCCESS) {
- ehea_h_free_resource(adapter->handle, mr->handle,
- FORCE_FREE);
- ehea_error("register_rpage failed for last page");
+ ehea_h_free_resource(adapter->handle, mr->handle, FORCE_FREE);
+ ehea_error("registering mr failed");
ret = -EIO;
goto out;
}
+ mr->vaddr = EHEA_BUSMAP_START;
mr->adapter = adapter;
ret = 0;
out:
diff --git a/drivers/net/ehea/ehea_qmr.h b/drivers/net/ehea/ehea_qmr.h
index c0eb3e03a102..b71f8452a5e3 100644
--- a/drivers/net/ehea/ehea_qmr.h
+++ b/drivers/net/ehea/ehea_qmr.h
@@ -36,8 +36,14 @@
* page size of ehea hardware queues
*/
-#define EHEA_PAGESHIFT 12
-#define EHEA_PAGESIZE 4096UL
+#define EHEA_PAGESHIFT 12
+#define EHEA_PAGESIZE (1UL << EHEA_PAGESHIFT)
+#define EHEA_SECTSIZE (1UL << 24)
+#define EHEA_PAGES_PER_SECTION (EHEA_SECTSIZE >> PAGE_SHIFT)
+
+#if (1UL << SECTION_SIZE_BITS) < EHEA_SECTSIZE
+#error eHEA module can't work if kernel sectionsize < ehea sectionsize
+#endif
/* Some abbreviations used here:
*
@@ -372,4 +378,8 @@ int ehea_rem_mr(struct ehea_mr *mr);
void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle);
+int ehea_create_busmap( void );
+void ehea_destroy_busmap( void );
+u64 ehea_map_vaddr(void *caddr);
+
#endif /* __EHEA_QMR_H__ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 01:11:30 +0000