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authorMarkus Lidel <Markus.Lidel@shadowconnect.com>2006-01-06 00:19:29 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:53 -0800
commita1a5ea70a6e9db6332b27fe2d96666e17aa1436b (patch)
tree7edfe920aa40af94464ab05539d449dbe5689254 /drivers/message/i2o/i2o_config.c
parent347a8dc3b815f0c0fa62a1df075184ffe4cbdcf1 (diff)
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[PATCH] I2O: changed I2O API to create I2O messages in kernel memory
Changed the I2O API to create I2O messages first in kernel memory and then transfer it at once over the PCI bus instead of sending each quad-word over the PCI bus. Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/message/i2o/i2o_config.c')
-rw-r--r--drivers/message/i2o/i2o_config.c169
1 files changed, 83 insertions, 86 deletions
diff --git a/drivers/message/i2o/i2o_config.c b/drivers/message/i2o/i2o_config.c
index 3c3a7abebb1b..4fe73d628c5b 100644
--- a/drivers/message/i2o/i2o_config.c
+++ b/drivers/message/i2o/i2o_config.c
@@ -230,8 +230,7 @@ static int i2o_cfg_swdl(unsigned long arg)
struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
unsigned char maxfrag = 0, curfrag = 1;
struct i2o_dma buffer;
- struct i2o_message __iomem *msg;
- u32 m;
+ struct i2o_message *msg;
unsigned int status = 0, swlen = 0, fragsize = 8192;
struct i2o_controller *c;
@@ -257,31 +256,34 @@ static int i2o_cfg_swdl(unsigned long arg)
if (!c)
return -ENXIO;
- m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
- if (m == I2O_QUEUE_EMPTY)
- return -EBUSY;
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
- i2o_msg_nop(c, m);
+ i2o_msg_nop(c, msg);
return -ENOMEM;
}
__copy_from_user(buffer.virt, kxfer.buf, fragsize);
- writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
- writel(I2O_CMD_SW_DOWNLOAD << 24 | HOST_TID << 12 | ADAPTER_TID,
- &msg->u.head[1]);
- writel(i2o_config_driver.context, &msg->u.head[2]);
- writel(0, &msg->u.head[3]);
- writel((((u32) kxfer.flags) << 24) | (((u32) kxfer.sw_type) << 16) |
- (((u32) maxfrag) << 8) | (((u32) curfrag)), &msg->body[0]);
- writel(swlen, &msg->body[1]);
- writel(kxfer.sw_id, &msg->body[2]);
- writel(0xD0000000 | fragsize, &msg->body[3]);
- writel(buffer.phys, &msg->body[4]);
+ msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_SW_DOWNLOAD << 24 | HOST_TID << 12 |
+ ADAPTER_TID);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(0);
+ msg->body[0] =
+ cpu_to_le32((((u32) kxfer.flags) << 24) | (((u32) kxfer.
+ sw_type) << 16) |
+ (((u32) maxfrag) << 8) | (((u32) curfrag)));
+ msg->body[1] = cpu_to_le32(swlen);
+ msg->body[2] = cpu_to_le32(kxfer.sw_id);
+ msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
+ msg->body[4] = cpu_to_le32(buffer.phys);
osm_debug("swdl frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
- status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
+ status = i2o_msg_post_wait_mem(c, msg, 60, &buffer);
if (status != -ETIMEDOUT)
i2o_dma_free(&c->pdev->dev, &buffer);
@@ -302,8 +304,7 @@ static int i2o_cfg_swul(unsigned long arg)
struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
unsigned char maxfrag = 0, curfrag = 1;
struct i2o_dma buffer;
- struct i2o_message __iomem *msg;
- u32 m;
+ struct i2o_message *msg;
unsigned int status = 0, swlen = 0, fragsize = 8192;
struct i2o_controller *c;
int ret = 0;
@@ -330,30 +331,30 @@ static int i2o_cfg_swul(unsigned long arg)
if (!c)
return -ENXIO;
- m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
- if (m == I2O_QUEUE_EMPTY)
- return -EBUSY;
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
- i2o_msg_nop(c, m);
+ i2o_msg_nop(c, msg);
return -ENOMEM;
}
- writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
- writel(I2O_CMD_SW_UPLOAD << 24 | HOST_TID << 12 | ADAPTER_TID,
- &msg->u.head[1]);
- writel(i2o_config_driver.context, &msg->u.head[2]);
- writel(0, &msg->u.head[3]);
- writel((u32) kxfer.flags << 24 | (u32) kxfer.
- sw_type << 16 | (u32) maxfrag << 8 | (u32) curfrag,
- &msg->body[0]);
- writel(swlen, &msg->body[1]);
- writel(kxfer.sw_id, &msg->body[2]);
- writel(0xD0000000 | fragsize, &msg->body[3]);
- writel(buffer.phys, &msg->body[4]);
+ msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_SW_UPLOAD << 24 | HOST_TID << 12 | ADAPTER_TID);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(0);
+ msg->body[0] =
+ cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.
+ sw_type << 16 | (u32) maxfrag << 8 | (u32) curfrag);
+ msg->body[1] = cpu_to_le32(swlen);
+ msg->body[2] = cpu_to_le32(kxfer.sw_id);
+ msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
+ msg->body[4] = cpu_to_le32(buffer.phys);
osm_debug("swul frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
- status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
+ status = i2o_msg_post_wait_mem(c, msg, 60, &buffer);
if (status != I2O_POST_WAIT_OK) {
if (status != -ETIMEDOUT)
@@ -380,8 +381,7 @@ static int i2o_cfg_swdel(unsigned long arg)
struct i2o_controller *c;
struct i2o_sw_xfer kxfer;
struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
- struct i2o_message __iomem *msg;
- u32 m;
+ struct i2o_message *msg;
unsigned int swlen;
int token;
@@ -395,21 +395,21 @@ static int i2o_cfg_swdel(unsigned long arg)
if (!c)
return -ENXIO;
- m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
- if (m == I2O_QUEUE_EMPTY)
- return -EBUSY;
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
- writel(SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
- writel(I2O_CMD_SW_REMOVE << 24 | HOST_TID << 12 | ADAPTER_TID,
- &msg->u.head[1]);
- writel(i2o_config_driver.context, &msg->u.head[2]);
- writel(0, &msg->u.head[3]);
- writel((u32) kxfer.flags << 24 | (u32) kxfer.sw_type << 16,
- &msg->body[0]);
- writel(swlen, &msg->body[1]);
- writel(kxfer.sw_id, &msg->body[2]);
+ msg->u.head[0] = cpu_to_le32(SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_SW_REMOVE << 24 | HOST_TID << 12 | ADAPTER_TID);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(0);
+ msg->body[0] =
+ cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.sw_type << 16);
+ msg->body[1] = cpu_to_le32(swlen);
+ msg->body[2] = cpu_to_le32(kxfer.sw_id);
- token = i2o_msg_post_wait(c, m, 10);
+ token = i2o_msg_post_wait(c, msg, 10);
if (token != I2O_POST_WAIT_OK) {
osm_info("swdel failed, DetailedStatus = %d\n", token);
@@ -423,25 +423,24 @@ static int i2o_cfg_validate(unsigned long arg)
{
int token;
int iop = (int)arg;
- struct i2o_message __iomem *msg;
- u32 m;
+ struct i2o_message *msg;
struct i2o_controller *c;
c = i2o_find_iop(iop);
if (!c)
return -ENXIO;
- m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
- if (m == I2O_QUEUE_EMPTY)
- return -EBUSY;
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
- writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
- writel(I2O_CMD_CONFIG_VALIDATE << 24 | HOST_TID << 12 | iop,
- &msg->u.head[1]);
- writel(i2o_config_driver.context, &msg->u.head[2]);
- writel(0, &msg->u.head[3]);
+ msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_CONFIG_VALIDATE << 24 | HOST_TID << 12 | iop);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(0);
- token = i2o_msg_post_wait(c, m, 10);
+ token = i2o_msg_post_wait(c, msg, 10);
if (token != I2O_POST_WAIT_OK) {
osm_info("Can't validate configuration, ErrorStatus = %d\n",
@@ -454,8 +453,7 @@ static int i2o_cfg_validate(unsigned long arg)
static int i2o_cfg_evt_reg(unsigned long arg, struct file *fp)
{
- struct i2o_message __iomem *msg;
- u32 m;
+ struct i2o_message *msg;
struct i2o_evt_id __user *pdesc = (struct i2o_evt_id __user *)arg;
struct i2o_evt_id kdesc;
struct i2o_controller *c;
@@ -474,18 +472,19 @@ static int i2o_cfg_evt_reg(unsigned long arg, struct file *fp)
if (!d)
return -ENODEV;
- m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
- if (m == I2O_QUEUE_EMPTY)
- return -EBUSY;
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
- writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
- writel(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 | kdesc.tid,
- &msg->u.head[1]);
- writel(i2o_config_driver.context, &msg->u.head[2]);
- writel(i2o_cntxt_list_add(c, fp->private_data), &msg->u.head[3]);
- writel(kdesc.evt_mask, &msg->body[0]);
+ msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+ msg->u.head[1] =
+ cpu_to_le32(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 |
+ kdesc.tid);
+ msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+ msg->u.head[3] = cpu_to_le32(i2o_cntxt_list_add(c, fp->private_data));
+ msg->body[0] = cpu_to_le32(kdesc.evt_mask);
- i2o_msg_post(c, m);
+ i2o_msg_post(c, msg);
return 0;
}
@@ -537,7 +536,6 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
u32 sg_index = 0;
i2o_status_block *sb;
struct i2o_message *msg;
- u32 m;
unsigned int iop;
cmd = (struct i2o_cmd_passthru32 __user *)arg;
@@ -553,7 +551,7 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
return -ENXIO;
}
- m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
sb = c->status_block.virt;
@@ -595,8 +593,8 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
sg_offset = (msg->u.head[0] >> 4) & 0x0f;
- writel(i2o_config_driver.context, &msg->u.s.icntxt);
- writel(i2o_cntxt_list_add(c, reply), &msg->u.s.tcntxt);
+ msg->u.s.icntxt = cpu_to_le32(i2o_config_driver.context);
+ msg->u.s.tcntxt = cpu_to_le32(i2o_cntxt_list_add(c, reply));
memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
if (sg_offset) {
@@ -662,7 +660,7 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
}
}
- rcode = i2o_msg_post_wait(c, m, 60);
+ rcode = i2o_msg_post_wait(c, msg, 60);
if (rcode)
goto sg_list_cleanup;
@@ -780,8 +778,7 @@ static int i2o_cfg_passthru(unsigned long arg)
u32 i = 0;
void *p = NULL;
i2o_status_block *sb;
- struct i2o_message __iomem *msg;
- u32 m;
+ struct i2o_message *msg;
unsigned int iop;
if (get_user(iop, &cmd->iop) || get_user(user_msg, &cmd->msg))
@@ -793,7 +790,7 @@ static int i2o_cfg_passthru(unsigned long arg)
return -ENXIO;
}
- m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+ msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
sb = c->status_block.virt;
@@ -830,8 +827,8 @@ static int i2o_cfg_passthru(unsigned long arg)
sg_offset = (msg->u.head[0] >> 4) & 0x0f;
- writel(i2o_config_driver.context, &msg->u.s.icntxt);
- writel(i2o_cntxt_list_add(c, reply), &msg->u.s.tcntxt);
+ msg->u.s.icntxt = cpu_to_le32(i2o_config_driver.context);
+ msg->u.s.tcntxt = cpu_to_le32(i2o_cntxt_list_add(c, reply));
memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
if (sg_offset) {
@@ -894,7 +891,7 @@ static int i2o_cfg_passthru(unsigned long arg)
}
}
- rcode = i2o_msg_post_wait(c, m, 60);
+ rcode = i2o_msg_post_wait(c, msg, 60);
if (rcode)
goto sg_list_cleanup;