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authorChien Tung <ctung@neteffect.com>2008-09-26 15:08:10 -0500
committerRoland Dreier <rolandd@cisco.com>2008-09-30 15:35:46 -0700
commit2b537c2824194d50072ab260f54d6fe4cb8d17e8 (patch)
treecbfaf2ecce497f8a51dc24bd93da1afa185af260 /drivers/infiniband/hw
parentde182149c31786b2b07fa408fb076599b29232a1 (diff)
RDMA/nes: Add wqm_quanta module option
Add a module parameter wqm_quanta. It controls the number of segments transmitted at a time. Signed-off-by: Sweta Bhatt <sweta.bhatt@einfochips.com> Signed-off-by: Chien Tung <ctung@neteffect.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw')
-rw-r--r--drivers/infiniband/hw/nes/nes.c58
-rw-r--r--drivers/infiniband/hw/nes/nes.h2
-rw-r--r--drivers/infiniband/hw/nes/nes_hw.c3
-rw-r--r--drivers/infiniband/hw/nes/nes_hw.h2
4 files changed, 63 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
index 30c93db5a74..a2b04d62b1a 100644
--- a/drivers/infiniband/hw/nes/nes.c
+++ b/drivers/infiniband/hw/nes/nes.c
@@ -91,6 +91,10 @@ unsigned int nes_debug_level = 0;
module_param_named(debug_level, nes_debug_level, uint, 0644);
MODULE_PARM_DESC(debug_level, "Enable debug output level");
+unsigned int wqm_quanta = 0x10000;
+module_param(wqm_quanta, int, 0644);
+MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
+
LIST_HEAD(nes_adapter_list);
static LIST_HEAD(nes_dev_list);
@@ -557,6 +561,7 @@ static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_i
goto bail5;
}
nesdev->nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
+ nesdev->nesadapter->wqm_quanta = wqm_quanta;
/* nesdev->base_doorbell_index =
nesdev->nesadapter->pd_config_base[PCI_FUNC(nesdev->pcidev->devfn)]; */
@@ -1069,6 +1074,55 @@ static ssize_t nes_store_idx_data(struct device_driver *ddp,
return strnlen(buf, count);
}
+
+/**
+ * nes_show_wqm_quanta
+ */
+static ssize_t nes_show_wqm_quanta(struct device_driver *ddp, char *buf)
+{
+ u32 wqm_quanta_value = 0xdead;
+ u32 i = 0;
+ struct nes_device *nesdev;
+
+ list_for_each_entry(nesdev, &nes_dev_list, list) {
+ if (i == ee_flsh_adapter) {
+ wqm_quanta_value = nesdev->nesadapter->wqm_quanta;
+ break;
+ }
+ i++;
+ }
+
+ return snprintf(buf, PAGE_SIZE, "0x%X\n", wqm_quanta);
+}
+
+
+/**
+ * nes_store_wqm_quanta
+ */
+static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
+ const char *buf, size_t count)
+{
+ unsigned long wqm_quanta_value;
+ u32 wqm_config1;
+ u32 i = 0;
+ struct nes_device *nesdev;
+
+ strict_strtoul(buf, 0, &wqm_quanta_value);
+ list_for_each_entry(nesdev, &nes_dev_list, list) {
+ if (i == ee_flsh_adapter) {
+ nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
+ wqm_config1 = nes_read_indexed(nesdev,
+ NES_IDX_WQM_CONFIG1);
+ nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1,
+ ((wqm_quanta_value << 1) |
+ (wqm_config1 & 0x00000001)));
+ break;
+ }
+ i++;
+ }
+ return strnlen(buf, count);
+}
+
static DRIVER_ATTR(adapter, S_IRUSR | S_IWUSR,
nes_show_adapter, nes_store_adapter);
static DRIVER_ATTR(eeprom_cmd, S_IRUSR | S_IWUSR,
@@ -1087,6 +1141,8 @@ static DRIVER_ATTR(idx_addr, S_IRUSR | S_IWUSR,
nes_show_idx_addr, nes_store_idx_addr);
static DRIVER_ATTR(idx_data, S_IRUSR | S_IWUSR,
nes_show_idx_data, nes_store_idx_data);
+static DRIVER_ATTR(wqm_quanta, S_IRUSR | S_IWUSR,
+ nes_show_wqm_quanta, nes_store_wqm_quanta);
static int nes_create_driver_sysfs(struct pci_driver *drv)
{
@@ -1100,6 +1156,7 @@ static int nes_create_driver_sysfs(struct pci_driver *drv)
error |= driver_create_file(&drv->driver, &driver_attr_nonidx_data);
error |= driver_create_file(&drv->driver, &driver_attr_idx_addr);
error |= driver_create_file(&drv->driver, &driver_attr_idx_data);
+ error |= driver_create_file(&drv->driver, &driver_attr_wqm_quanta);
return error;
}
@@ -1114,6 +1171,7 @@ static void nes_remove_driver_sysfs(struct pci_driver *drv)
driver_remove_file(&drv->driver, &driver_attr_nonidx_data);
driver_remove_file(&drv->driver, &driver_attr_idx_addr);
driver_remove_file(&drv->driver, &driver_attr_idx_data);
+ driver_remove_file(&drv->driver, &driver_attr_wqm_quanta);
}
/**
diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h
index 8eb7ae96974..1595dc7bba9 100644
--- a/drivers/infiniband/hw/nes/nes.h
+++ b/drivers/infiniband/hw/nes/nes.h
@@ -169,7 +169,7 @@ extern int disable_mpa_crc;
extern unsigned int send_first;
extern unsigned int nes_drv_opt;
extern unsigned int nes_debug_level;
-
+extern unsigned int wqm_quanta;
extern struct list_head nes_adapter_list;
extern atomic_t cm_connects;
diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index bdd98e66f43..0e259a8b307 100644
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/drivers/infiniband/hw/nes/nes_hw.c
@@ -861,7 +861,8 @@ static void nes_init_csr_ne020(struct nes_device *nesdev, u8 hw_rev, u8 port_cou
nes_write_indexed(nesdev, 0x00005000, 0x00018000);
/* nes_write_indexed(nesdev, 0x00005000, 0x00010000); */
- nes_write_indexed(nesdev, 0x00005004, 0x00020001);
+ nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1, (wqm_quanta << 1) |
+ 0x00000001);
nes_write_indexed(nesdev, 0x00005008, 0x1F1F1F1F);
nes_write_indexed(nesdev, 0x00005010, 0x1F1F1F1F);
nes_write_indexed(nesdev, 0x00005018, 0x1F1F1F1F);
diff --git a/drivers/infiniband/hw/nes/nes_hw.h b/drivers/infiniband/hw/nes/nes_hw.h
index fc0f063ce24..82d06766ad5 100644
--- a/drivers/infiniband/hw/nes/nes_hw.h
+++ b/drivers/infiniband/hw/nes/nes_hw.h
@@ -156,6 +156,7 @@ enum indexed_regs {
NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_HI = 0x7004,
NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_LO = 0x7008,
NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_HI = 0x700c,
+ NES_IDX_WQM_CONFIG1 = 0x5004,
NES_IDX_CM_CONFIG = 0x5100,
NES_IDX_NIC_LOGPORT_TO_PHYPORT = 0x6000,
NES_IDX_NIC_PHYPORT_TO_USW = 0x6008,
@@ -1079,6 +1080,7 @@ struct nes_adapter {
u32 et_rx_max_coalesced_frames_high;
u32 et_rate_sample_interval;
u32 timer_int_limit;
+ u32 wqm_quanta;
/* Adapter base MAC address */
u32 mac_addr_low;