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[SCSI] ibmvscsi: convert the ibmvscsi driver to use include/scsi/srp.h

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Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
FUJITA Tomonori 2006-03-26 03:57:14 +09:00 committed by James Bottomley
parent 9b833e428a
commit ef26567343
4 changed files with 142 additions and 125 deletions
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247
drivers/scsi/ibmvscsi/ibmvscsi.c
View File

@ -168,7 +168,7 @@ static void release_event_pool(struct event_pool *pool,
++in_use;
if (pool->events[i].ext_list) {
dma_free_coherent(hostdata->dev,
SG_ALL * sizeof(struct memory_descriptor),
SG_ALL * sizeof(struct srp_direct_buf),
pool->events[i].ext_list,
pool->events[i].ext_list_token);
}
@ -284,40 +284,37 @@ static void set_srp_direction(struct scsi_cmnd *cmd,
struct srp_cmd *srp_cmd,
int numbuf)
{
u8 fmt;
if (numbuf == 0)
return;
if (numbuf == 1) {
if (numbuf == 1)
fmt = SRP_DATA_DESC_DIRECT;
else {
fmt = SRP_DATA_DESC_INDIRECT;
numbuf = min(numbuf, MAX_INDIRECT_BUFS);
if (cmd->sc_data_direction == DMA_TO_DEVICE)
srp_cmd->data_out_format = SRP_DIRECT_BUFFER;
else
srp_cmd->data_in_format = SRP_DIRECT_BUFFER;
} else {
if (cmd->sc_data_direction == DMA_TO_DEVICE) {
srp_cmd->data_out_format = SRP_INDIRECT_BUFFER;
srp_cmd->data_out_count =
numbuf < MAX_INDIRECT_BUFS ?
numbuf: MAX_INDIRECT_BUFS;
} else {
srp_cmd->data_in_format = SRP_INDIRECT_BUFFER;
srp_cmd->data_in_count =
numbuf < MAX_INDIRECT_BUFS ?
numbuf: MAX_INDIRECT_BUFS;
}
srp_cmd->data_out_desc_cnt = numbuf;
else
srp_cmd->data_in_desc_cnt = numbuf;
}
if (cmd->sc_data_direction == DMA_TO_DEVICE)
srp_cmd->buf_fmt = fmt << 4;
else
srp_cmd->buf_fmt = fmt;
}
static void unmap_sg_list(int num_entries,
static void unmap_sg_list(int num_entries,
struct device *dev,
struct memory_descriptor *md)
{
struct srp_direct_buf *md)
{
int i;
for (i = 0; i < num_entries; ++i) {
dma_unmap_single(dev,
md[i].virtual_address,
md[i].length, DMA_BIDIRECTIONAL);
}
for (i = 0; i < num_entries; ++i)
dma_unmap_single(dev, md[i].va, md[i].len, DMA_BIDIRECTIONAL);
}
/**
@ -330,23 +327,26 @@ static void unmap_cmd_data(struct srp_cmd *cmd,
struct srp_event_struct *evt_struct,
struct device *dev)
{
if ((cmd->data_out_format == SRP_NO_BUFFER) &&
(cmd->data_in_format == SRP_NO_BUFFER))
u8 out_fmt, in_fmt;
out_fmt = cmd->buf_fmt >> 4;
in_fmt = cmd->buf_fmt & ((1U << 4) - 1);
if (out_fmt == SRP_NO_DATA_DESC && in_fmt == SRP_NO_DATA_DESC)
return;
else if ((cmd->data_out_format == SRP_DIRECT_BUFFER) ||
(cmd->data_in_format == SRP_DIRECT_BUFFER)) {
struct memory_descriptor *data =
(struct memory_descriptor *)cmd->additional_data;
dma_unmap_single(dev, data->virtual_address, data->length,
DMA_BIDIRECTIONAL);
else if (out_fmt == SRP_DATA_DESC_DIRECT ||
in_fmt == SRP_DATA_DESC_DIRECT) {
struct srp_direct_buf *data =
(struct srp_direct_buf *) cmd->add_data;
dma_unmap_single(dev, data->va, data->len, DMA_BIDIRECTIONAL);
} else {
struct indirect_descriptor *indirect =
(struct indirect_descriptor *)cmd->additional_data;
int num_mapped = indirect->head.length /
sizeof(indirect->list[0]);
struct srp_indirect_buf *indirect =
(struct srp_indirect_buf *) cmd->add_data;
int num_mapped = indirect->table_desc.len /
sizeof(struct srp_direct_buf);
if (num_mapped <= MAX_INDIRECT_BUFS) {
unmap_sg_list(num_mapped, dev, &indirect->list[0]);
unmap_sg_list(num_mapped, dev, &indirect->desc_list[0]);
return;
}
@ -356,17 +356,17 @@ static void unmap_cmd_data(struct srp_cmd *cmd,
static int map_sg_list(int num_entries,
struct scatterlist *sg,
struct memory_descriptor *md)
struct srp_direct_buf *md)
{
int i;
u64 total_length = 0;
for (i = 0; i < num_entries; ++i) {
struct memory_descriptor *descr = md + i;
struct srp_direct_buf *descr = md + i;
struct scatterlist *sg_entry = &sg[i];
descr->virtual_address = sg_dma_address(sg_entry);
descr->length = sg_dma_len(sg_entry);
descr->memory_handle = 0;
descr->va = sg_dma_address(sg_entry);
descr->len = sg_dma_len(sg_entry);
descr->key = 0;
total_length += sg_dma_len(sg_entry);
}
return total_length;
@ -389,10 +389,10 @@ static int map_sg_data(struct scsi_cmnd *cmd,
int sg_mapped;
u64 total_length = 0;
struct scatterlist *sg = cmd->request_buffer;
struct memory_descriptor *data =
(struct memory_descriptor *)srp_cmd->additional_data;
struct indirect_descriptor *indirect =
(struct indirect_descriptor *)data;
struct srp_direct_buf *data =
(struct srp_direct_buf *) srp_cmd->add_data;
struct srp_indirect_buf *indirect =
(struct srp_indirect_buf *) data;
sg_mapped = dma_map_sg(dev, sg, cmd->use_sg, DMA_BIDIRECTIONAL);
@ -403,9 +403,9 @@ static int map_sg_data(struct scsi_cmnd *cmd,
/* special case; we can use a single direct descriptor */
if (sg_mapped == 1) {
data->virtual_address = sg_dma_address(&sg[0]);
data->length = sg_dma_len(&sg[0]);
data->memory_handle = 0;
data->va = sg_dma_address(&sg[0]);
data->len = sg_dma_len(&sg[0]);
data->key = 0;
return 1;
}
@ -416,25 +416,26 @@ static int map_sg_data(struct scsi_cmnd *cmd,
return 0;
}
indirect->head.virtual_address = 0;
indirect->head.length = sg_mapped * sizeof(indirect->list[0]);
indirect->head.memory_handle = 0;
indirect->table_desc.va = 0;
indirect->table_desc.len = sg_mapped * sizeof(struct srp_direct_buf);
indirect->table_desc.key = 0;
if (sg_mapped <= MAX_INDIRECT_BUFS) {
total_length = map_sg_list(sg_mapped, sg, &indirect->list[0]);
indirect->total_length = total_length;
total_length = map_sg_list(sg_mapped, sg,
&indirect->desc_list[0]);
indirect->len = total_length;
return 1;
}
/* get indirect table */
if (!evt_struct->ext_list) {
evt_struct->ext_list =(struct memory_descriptor*)
evt_struct->ext_list = (struct srp_direct_buf *)
dma_alloc_coherent(dev,
SG_ALL * sizeof(struct memory_descriptor),
&evt_struct->ext_list_token, 0);
SG_ALL * sizeof(struct srp_direct_buf),
&evt_struct->ext_list_token, 0);
if (!evt_struct->ext_list) {
printk(KERN_ERR
"ibmvscsi: Can't allocate memory for indirect table\n");
printk(KERN_ERR
"ibmvscsi: Can't allocate memory for indirect table\n");
return 0;
}
@ -442,11 +443,11 @@ static int map_sg_data(struct scsi_cmnd *cmd,
total_length = map_sg_list(sg_mapped, sg, evt_struct->ext_list);
indirect->total_length = total_length;
indirect->head.virtual_address = evt_struct->ext_list_token;
indirect->head.length = sg_mapped * sizeof(indirect->list[0]);
memcpy(indirect->list, evt_struct->ext_list,
MAX_INDIRECT_BUFS * sizeof(struct memory_descriptor));
indirect->len = total_length;
indirect->table_desc.va = evt_struct->ext_list_token;
indirect->table_desc.len = sg_mapped * sizeof(indirect->desc_list[0]);
memcpy(indirect->desc_list, evt_struct->ext_list,
MAX_INDIRECT_BUFS * sizeof(struct srp_direct_buf));
return 1;
}
@ -463,20 +464,20 @@ static int map_sg_data(struct scsi_cmnd *cmd,
static int map_single_data(struct scsi_cmnd *cmd,
struct srp_cmd *srp_cmd, struct device *dev)
{
struct memory_descriptor *data =
(struct memory_descriptor *)srp_cmd->additional_data;
struct srp_direct_buf *data =
(struct srp_direct_buf *) srp_cmd->add_data;
data->virtual_address =
data->va =
dma_map_single(dev, cmd->request_buffer,
cmd->request_bufflen,
DMA_BIDIRECTIONAL);
if (dma_mapping_error(data->virtual_address)) {
if (dma_mapping_error(data->va)) {
printk(KERN_ERR
"ibmvscsi: Unable to map request_buffer for command!\n");
return 0;
}
data->length = cmd->request_bufflen;
data->memory_handle = 0;
data->len = cmd->request_bufflen;
data->key = 0;
set_srp_direction(cmd, srp_cmd, 1);
@ -548,7 +549,7 @@ static int ibmvscsi_send_srp_event(struct srp_event_struct *evt_struct,
/* Copy the IU into the transfer area */
*evt_struct->xfer_iu = evt_struct->iu;
evt_struct->xfer_iu->srp.generic.tag = (u64)evt_struct;
evt_struct->xfer_iu->srp.rsp.tag = (u64)evt_struct;
/* Add this to the sent list. We need to do this
* before we actually send
@ -586,27 +587,27 @@ static void handle_cmd_rsp(struct srp_event_struct *evt_struct)
struct srp_rsp *rsp = &evt_struct->xfer_iu->srp.rsp;
struct scsi_cmnd *cmnd = evt_struct->cmnd;
if (unlikely(rsp->type != SRP_RSP_TYPE)) {
if (unlikely(rsp->opcode != SRP_RSP)) {
if (printk_ratelimit())
printk(KERN_WARNING
"ibmvscsi: bad SRP RSP type %d\n",
rsp->type);
rsp->opcode);
}
if (cmnd) {
cmnd->result = rsp->status;
if (((cmnd->result >> 1) & 0x1f) == CHECK_CONDITION)
memcpy(cmnd->sense_buffer,
rsp->sense_and_response_data,
rsp->sense_data_list_length);
rsp->data,
rsp->sense_data_len);
unmap_cmd_data(&evt_struct->iu.srp.cmd,
evt_struct,
evt_struct->hostdata->dev);
if (rsp->doover)
cmnd->resid = rsp->data_out_residual_count;
else if (rsp->diover)
cmnd->resid = rsp->data_in_residual_count;
if (rsp->flags & SRP_RSP_FLAG_DOOVER)
cmnd->resid = rsp->data_out_res_cnt;
else if (rsp->flags & SRP_RSP_FLAG_DIOVER)
cmnd->resid = rsp->data_in_res_cnt;
}
if (evt_struct->cmnd_done)
@ -633,10 +634,11 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
{
struct srp_cmd *srp_cmd;
struct srp_event_struct *evt_struct;
struct indirect_descriptor *indirect;
struct srp_indirect_buf *indirect;
struct ibmvscsi_host_data *hostdata =
(struct ibmvscsi_host_data *)&cmnd->device->host->hostdata;
u16 lun = lun_from_dev(cmnd->device);
u8 out_fmt, in_fmt;
evt_struct = get_event_struct(&hostdata->pool);
if (!evt_struct)
@ -644,8 +646,8 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
/* Set up the actual SRP IU */
srp_cmd = &evt_struct->iu.srp.cmd;
memset(srp_cmd, 0x00, sizeof(*srp_cmd));
srp_cmd->type = SRP_CMD_TYPE;
memset(srp_cmd, 0x00, SRP_MAX_IU_LEN);
srp_cmd->opcode = SRP_CMD;
memcpy(srp_cmd->cdb, cmnd->cmnd, sizeof(cmnd->cmnd));
srp_cmd->lun = ((u64) lun) << 48;
@ -664,13 +666,15 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
evt_struct->cmnd_done = done;
/* Fix up dma address of the buffer itself */
indirect = (struct indirect_descriptor *)srp_cmd->additional_data;
if (((srp_cmd->data_out_format == SRP_INDIRECT_BUFFER) ||
(srp_cmd->data_in_format == SRP_INDIRECT_BUFFER)) &&
(indirect->head.virtual_address == 0)) {
indirect->head.virtual_address = evt_struct->crq.IU_data_ptr +
offsetof(struct srp_cmd, additional_data) +
offsetof(struct indirect_descriptor, list);
indirect = (struct srp_indirect_buf *) srp_cmd->add_data;
out_fmt = srp_cmd->buf_fmt >> 4;
in_fmt = srp_cmd->buf_fmt & ((1U << 4) - 1);
if ((in_fmt == SRP_DATA_DESC_INDIRECT ||
out_fmt == SRP_DATA_DESC_INDIRECT) &&
indirect->table_desc.va == 0) {
indirect->table_desc.va = evt_struct->crq.IU_data_ptr +
offsetof(struct srp_cmd, add_data) +
offsetof(struct srp_indirect_buf, desc_list);
}
return ibmvscsi_send_srp_event(evt_struct, hostdata);
@ -780,10 +784,10 @@ static void send_mad_adapter_info(struct ibmvscsi_host_data *hostdata)
static void login_rsp(struct srp_event_struct *evt_struct)
{
struct ibmvscsi_host_data *hostdata = evt_struct->hostdata;
switch (evt_struct->xfer_iu->srp.generic.type) {
case SRP_LOGIN_RSP_TYPE: /* it worked! */
switch (evt_struct->xfer_iu->srp.login_rsp.opcode) {
case SRP_LOGIN_RSP: /* it worked! */
break;
case SRP_LOGIN_REJ_TYPE: /* refused! */
case SRP_LOGIN_REJ: /* refused! */
printk(KERN_INFO "ibmvscsi: SRP_LOGIN_REJ reason %u\n",
evt_struct->xfer_iu->srp.login_rej.reason);
/* Login failed. */
@ -792,7 +796,7 @@ static void login_rsp(struct srp_event_struct *evt_struct)
default:
printk(KERN_ERR
"ibmvscsi: Invalid login response typecode 0x%02x!\n",
evt_struct->xfer_iu->srp.generic.type);
evt_struct->xfer_iu->srp.login_rsp.opcode);
/* Login failed. */
atomic_set(&hostdata->request_limit, -1);
return;
@ -800,17 +804,17 @@ static void login_rsp(struct srp_event_struct *evt_struct)
printk(KERN_INFO "ibmvscsi: SRP_LOGIN succeeded\n");
if (evt_struct->xfer_iu->srp.login_rsp.request_limit_delta >
if (evt_struct->xfer_iu->srp.login_rsp.req_lim_delta >
(max_requests - 2))
evt_struct->xfer_iu->srp.login_rsp.request_limit_delta =
evt_struct->xfer_iu->srp.login_rsp.req_lim_delta =
max_requests - 2;
/* Now we know what the real request-limit is */
atomic_set(&hostdata->request_limit,
evt_struct->xfer_iu->srp.login_rsp.request_limit_delta);
evt_struct->xfer_iu->srp.login_rsp.req_lim_delta);
hostdata->host->can_queue =
evt_struct->xfer_iu->srp.login_rsp.request_limit_delta - 2;
evt_struct->xfer_iu->srp.login_rsp.req_lim_delta - 2;
if (hostdata->host->can_queue < 1) {
printk(KERN_ERR "ibmvscsi: Invalid request_limit_delta\n");
@ -849,9 +853,9 @@ static int send_srp_login(struct ibmvscsi_host_data *hostdata)
login = &evt_struct->iu.srp.login_req;
memset(login, 0x00, sizeof(struct srp_login_req));
login->type = SRP_LOGIN_REQ_TYPE;
login->max_requested_initiator_to_target_iulen = sizeof(union srp_iu);
login->required_buffer_formats = 0x0006;
login->opcode = SRP_LOGIN_REQ;
login->req_it_iu_len = sizeof(union srp_iu);
login->req_buf_fmt = SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT;
spin_lock_irqsave(hostdata->host->host_lock, flags);
/* Start out with a request limit of 1, since this is negotiated in
@ -929,13 +933,13 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
/* Set up an abort SRP command */
memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
tsk_mgmt->type = SRP_TSK_MGMT_TYPE;
tsk_mgmt->opcode = SRP_TSK_MGMT;
tsk_mgmt->lun = ((u64) lun) << 48;
tsk_mgmt->task_mgmt_flags = 0x01; /* ABORT TASK */
tsk_mgmt->managed_task_tag = (u64) found_evt;
tsk_mgmt->tsk_mgmt_func = SRP_TSK_ABORT_TASK;
tsk_mgmt->task_tag = (u64) found_evt;
printk(KERN_INFO "ibmvscsi: aborting command. lun 0x%lx, tag 0x%lx\n",
tsk_mgmt->lun, tsk_mgmt->managed_task_tag);
tsk_mgmt->lun, tsk_mgmt->task_tag);
evt->sync_srp = &srp_rsp;
init_completion(&evt->comp);
@ -949,25 +953,25 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
wait_for_completion(&evt->comp);
/* make sure we got a good response */
if (unlikely(srp_rsp.srp.generic.type != SRP_RSP_TYPE)) {
if (unlikely(srp_rsp.srp.rsp.opcode != SRP_RSP)) {
if (printk_ratelimit())
printk(KERN_WARNING
"ibmvscsi: abort bad SRP RSP type %d\n",
srp_rsp.srp.generic.type);
srp_rsp.srp.rsp.opcode);
return FAILED;
}
if (srp_rsp.srp.rsp.rspvalid)
rsp_rc = *((int *)srp_rsp.srp.rsp.sense_and_response_data);
if (srp_rsp.srp.rsp.flags & SRP_RSP_FLAG_RSPVALID)
rsp_rc = *((int *)srp_rsp.srp.rsp.data);
else
rsp_rc = srp_rsp.srp.rsp.status;
if (rsp_rc) {
if (printk_ratelimit())
printk(KERN_WARNING
"ibmvscsi: abort code %d for task tag 0x%lx\n",
"ibmvscsi: abort code %d for task tag 0x%lx\n",
rsp_rc,
tsk_mgmt->managed_task_tag);
tsk_mgmt->task_tag);
return FAILED;
}
@ -988,13 +992,13 @@ static int ibmvscsi_eh_abort_handler(struct scsi_cmnd *cmd)
spin_unlock_irqrestore(hostdata->host->host_lock, flags);
printk(KERN_INFO
"ibmvscsi: aborted task tag 0x%lx completed\n",
tsk_mgmt->managed_task_tag);
tsk_mgmt->task_tag);
return SUCCESS;
}
printk(KERN_INFO
"ibmvscsi: successfully aborted task tag 0x%lx\n",
tsk_mgmt->managed_task_tag);
tsk_mgmt->task_tag);
cmd->result = (DID_ABORT << 16);
list_del(&found_evt->list);
@ -1041,9 +1045,9 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
/* Set up a lun reset SRP command */
memset(tsk_mgmt, 0x00, sizeof(*tsk_mgmt));
tsk_mgmt->type = SRP_TSK_MGMT_TYPE;
tsk_mgmt->opcode = SRP_TSK_MGMT;
tsk_mgmt->lun = ((u64) lun) << 48;
tsk_mgmt->task_mgmt_flags = 0x08; /* LUN RESET */
tsk_mgmt->tsk_mgmt_func = SRP_TSK_LUN_RESET;
printk(KERN_INFO "ibmvscsi: resetting device. lun 0x%lx\n",
tsk_mgmt->lun);
@ -1060,16 +1064,16 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
wait_for_completion(&evt->comp);
/* make sure we got a good response */
if (unlikely(srp_rsp.srp.generic.type != SRP_RSP_TYPE)) {
if (unlikely(srp_rsp.srp.rsp.opcode != SRP_RSP)) {
if (printk_ratelimit())
printk(KERN_WARNING
"ibmvscsi: reset bad SRP RSP type %d\n",
srp_rsp.srp.generic.type);
srp_rsp.srp.rsp.opcode);
return FAILED;
}
if (srp_rsp.srp.rsp.rspvalid)
rsp_rc = *((int *)srp_rsp.srp.rsp.sense_and_response_data);
if (srp_rsp.srp.rsp.flags & SRP_RSP_FLAG_RSPVALID)
rsp_rc = *((int *)srp_rsp.srp.rsp.data);
else
rsp_rc = srp_rsp.srp.rsp.status;
@ -1077,8 +1081,7 @@ static int ibmvscsi_eh_device_reset_handler(struct scsi_cmnd *cmd)
if (printk_ratelimit())
printk(KERN_WARNING
"ibmvscsi: reset code %d for task tag 0x%lx\n",
rsp_rc,
tsk_mgmt->managed_task_tag);
rsp_rc, tsk_mgmt->task_tag);
return FAILED;
}
@ -1228,7 +1231,7 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq,
}
if (crq->format == VIOSRP_SRP_FORMAT)
atomic_add(evt_struct->xfer_iu->srp.rsp.request_limit_delta,
atomic_add(evt_struct->xfer_iu->srp.rsp.req_lim_delta,
&hostdata->request_limit);
if (evt_struct->done)

2
drivers/scsi/ibmvscsi/ibmvscsi.h
View File

@ -68,7 +68,7 @@ struct srp_event_struct {
void (*cmnd_done) (struct scsi_cmnd *);
struct completion comp;
union viosrp_iu *sync_srp;
struct memory_descriptor *ext_list;
struct srp_direct_buf *ext_list;
dma_addr_t ext_list_token;
};

1
drivers/scsi/ibmvscsi/rpa_vscsi.c
View File

@ -34,7 +34,6 @@
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include "ibmvscsi.h"
#include "srp.h"
static char partition_name[97] = "UNKNOWN";
static unsigned int partition_number = -1;

17
drivers/scsi/ibmvscsi/viosrp.h
View File

@ -33,7 +33,22 @@
/*****************************************************************************/
#ifndef VIOSRP_H
#define VIOSRP_H
#include "srp.h"
#include <scsi/srp.h>
#define SRP_VERSION "16.a"
#define SRP_MAX_IU_LEN 256
union srp_iu {
struct srp_login_req login_req;
struct srp_login_rsp login_rsp;
struct srp_login_rej login_rej;
struct srp_i_logout i_logout;
struct srp_t_logout t_logout;
struct srp_tsk_mgmt tsk_mgmt;
struct srp_cmd cmd;
struct srp_rsp rsp;
u8 reserved[SRP_MAX_IU_LEN];
};
enum viosrp_crq_formats {
VIOSRP_SRP_FORMAT = 0x01,