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linux-sg2042/drivers/scsi/hptiop.c

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/*
* HighPoint RR3xxx controller driver for Linux
* Copyright (C) 2006 HighPoint Technologies, Inc. All Rights Reserved.
*
* 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; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Please report bugs/comments/suggestions to linux@highpoint-tech.com
*
* For more information, visit http://www.highpoint-tech.com
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/spinlock.h>
#include <linux/hdreg.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/div64.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_host.h>
#include "hptiop.h"
MODULE_AUTHOR("HighPoint Technologies, Inc.");
MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx SATA Controller Driver");
static char driver_name[] = "hptiop";
static const char driver_name_long[] = "RocketRAID 3xxx SATA Controller driver";
static const char driver_ver[] = "v1.0 (060426)";
static DEFINE_SPINLOCK(hptiop_hba_list_lock);
static LIST_HEAD(hptiop_hba_list);
static int hptiop_cdev_major = -1;
static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag);
static void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag);
static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
static inline void hptiop_pci_posting_flush(struct hpt_iopmu __iomem *iop)
{
readl(&iop->outbound_intstatus);
}
static int iop_wait_ready(struct hpt_iopmu __iomem *iop, u32 millisec)
{
u32 req = 0;
int i;
for (i = 0; i < millisec; i++) {
req = readl(&iop->inbound_queue);
if (req != IOPMU_QUEUE_EMPTY)
break;
msleep(1);
}
if (req != IOPMU_QUEUE_EMPTY) {
writel(req, &iop->outbound_queue);
hptiop_pci_posting_flush(iop);
return 0;
}
return -1;
}
static void hptiop_request_callback(struct hptiop_hba *hba, u32 tag)
{
if ((tag & IOPMU_QUEUE_MASK_HOST_BITS) == IOPMU_QUEUE_ADDR_HOST_BIT)
return hptiop_host_request_callback(hba,
tag & ~IOPMU_QUEUE_ADDR_HOST_BIT);
else
return hptiop_iop_request_callback(hba, tag);
}
static inline void hptiop_drain_outbound_queue(struct hptiop_hba *hba)
{
u32 req;
while ((req = readl(&hba->iop->outbound_queue)) != IOPMU_QUEUE_EMPTY) {
if (req & IOPMU_QUEUE_MASK_HOST_BITS)
hptiop_request_callback(hba, req);
else {
struct hpt_iop_request_header __iomem * p;
p = (struct hpt_iop_request_header __iomem *)
((char __iomem *)hba->iop + req);
if (readl(&p->flags) & IOP_REQUEST_FLAG_SYNC_REQUEST) {
if (readl(&p->context))
hptiop_request_callback(hba, req);
else
writel(1, &p->context);
}
else
hptiop_request_callback(hba, req);
}
}
}
static int __iop_intr(struct hptiop_hba *hba)
{
struct hpt_iopmu __iomem *iop = hba->iop;
u32 status;
int ret = 0;
status = readl(&iop->outbound_intstatus);
if (status & IOPMU_OUTBOUND_INT_MSG0) {
u32 msg = readl(&iop->outbound_msgaddr0);
dprintk("received outbound msg %x\n", msg);
writel(IOPMU_OUTBOUND_INT_MSG0, &iop->outbound_intstatus);
hptiop_message_callback(hba, msg);
ret = 1;
}
if (status & IOPMU_OUTBOUND_INT_POSTQUEUE) {
hptiop_drain_outbound_queue(hba);
ret = 1;
}
return ret;
}
static int iop_send_sync_request(struct hptiop_hba *hba,
void __iomem *_req, u32 millisec)
{
struct hpt_iop_request_header __iomem *req = _req;
u32 i;
writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST,
&req->flags);
writel(0, &req->context);
writel((unsigned long)req - (unsigned long)hba->iop,
&hba->iop->inbound_queue);
hptiop_pci_posting_flush(hba->iop);
for (i = 0; i < millisec; i++) {
__iop_intr(hba);
if (readl(&req->context))
return 0;
msleep(1);
}
return -1;
}
static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
{
u32 i;
hba->msg_done = 0;
writel(msg, &hba->iop->inbound_msgaddr0);
hptiop_pci_posting_flush(hba->iop);
for (i = 0; i < millisec; i++) {
spin_lock_irq(hba->host->host_lock);
__iop_intr(hba);
spin_unlock_irq(hba->host->host_lock);
if (hba->msg_done)
break;
msleep(1);
}
return hba->msg_done? 0 : -1;
}
static int iop_get_config(struct hptiop_hba *hba,
struct hpt_iop_request_get_config *config)
{
u32 req32;
struct hpt_iop_request_get_config __iomem *req;
req32 = readl(&hba->iop->inbound_queue);
if (req32 == IOPMU_QUEUE_EMPTY)
return -1;
req = (struct hpt_iop_request_get_config __iomem *)
((unsigned long)hba->iop + req32);
writel(0, &req->header.flags);
writel(IOP_REQUEST_TYPE_GET_CONFIG, &req->header.type);
writel(sizeof(struct hpt_iop_request_get_config), &req->header.size);
writel(IOP_RESULT_PENDING, &req->header.result);
if (iop_send_sync_request(hba, req, 20000)) {
dprintk("Get config send cmd failed\n");
return -1;
}
memcpy_fromio(config, req, sizeof(*config));
writel(req32, &hba->iop->outbound_queue);
return 0;
}
static int iop_set_config(struct hptiop_hba *hba,
struct hpt_iop_request_set_config *config)
{
u32 req32;
struct hpt_iop_request_set_config __iomem *req;
req32 = readl(&hba->iop->inbound_queue);
if (req32 == IOPMU_QUEUE_EMPTY)
return -1;
req = (struct hpt_iop_request_set_config __iomem *)
((unsigned long)hba->iop + req32);
memcpy_toio((u8 __iomem *)req + sizeof(struct hpt_iop_request_header),
(u8 *)config + sizeof(struct hpt_iop_request_header),
sizeof(struct hpt_iop_request_set_config) -
sizeof(struct hpt_iop_request_header));
writel(0, &req->header.flags);
writel(IOP_REQUEST_TYPE_SET_CONFIG, &req->header.type);
writel(sizeof(struct hpt_iop_request_set_config), &req->header.size);
writel(IOP_RESULT_PENDING, &req->header.result);
if (iop_send_sync_request(hba, req, 20000)) {
dprintk("Set config send cmd failed\n");
return -1;
}
writel(req32, &hba->iop->outbound_queue);
return 0;
}
static int hptiop_initialize_iop(struct hptiop_hba *hba)
{
struct hpt_iopmu __iomem *iop = hba->iop;
/* enable interrupts */
writel(~(IOPMU_OUTBOUND_INT_POSTQUEUE | IOPMU_OUTBOUND_INT_MSG0),
&iop->outbound_intmask);
hba->initialized = 1;
/* start background tasks */
if (iop_send_sync_msg(hba,
IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
printk(KERN_ERR "scsi%d: fail to start background task\n",
hba->host->host_no);
return -1;
}
return 0;
}
static int hptiop_map_pci_bar(struct hptiop_hba *hba)
{
u32 mem_base_phy, length;
void __iomem *mem_base_virt;
struct pci_dev *pcidev = hba->pcidev;
if (!(pci_resource_flags(pcidev, 0) & IORESOURCE_MEM)) {
printk(KERN_ERR "scsi%d: pci resource invalid\n",
hba->host->host_no);
return -1;
}
mem_base_phy = pci_resource_start(pcidev, 0);
length = pci_resource_len(pcidev, 0);
mem_base_virt = ioremap(mem_base_phy, length);
if (!mem_base_virt) {
printk(KERN_ERR "scsi%d: Fail to ioremap memory space\n",
hba->host->host_no);
return -1;
}
hba->iop = mem_base_virt;
dprintk("hptiop_map_pci_bar: iop=%p\n", hba->iop);
return 0;
}
static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
{
dprintk("iop message 0x%x\n", msg);
if (!hba->initialized)
return;
if (msg == IOPMU_INBOUND_MSG0_RESET) {
atomic_set(&hba->resetting, 0);
wake_up(&hba->reset_wq);
}
else if (msg <= IOPMU_INBOUND_MSG0_MAX)
hba->msg_done = 1;
}
static inline struct hptiop_request *get_req(struct hptiop_hba *hba)
{
struct hptiop_request *ret;
dprintk("get_req : req=%p\n", hba->req_list);
ret = hba->req_list;
if (ret)
hba->req_list = ret->next;
return ret;
}
static inline void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
{
dprintk("free_req(%d, %p)\n", req->index, req);
req->next = hba->req_list;
hba->req_list = req;
}
static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag)
{
struct hpt_iop_request_scsi_command *req;
struct scsi_cmnd *scp;
req = (struct hpt_iop_request_scsi_command *)hba->reqs[tag].req_virt;
dprintk("hptiop_host_request_callback: req=%p, type=%d, "
"result=%d, context=0x%x tag=%d\n",
req, req->header.type, req->header.result,
req->header.context, tag);
BUG_ON(!req->header.result);
BUG_ON(req->header.type != cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND));
scp = hba->reqs[tag].scp;
if (HPT_SCP(scp)->mapped) {
if (scp->use_sg)
pci_unmap_sg(hba->pcidev,
(struct scatterlist *)scp->request_buffer,
scp->use_sg,
scp->sc_data_direction
);
else
pci_unmap_single(hba->pcidev,
HPT_SCP(scp)->dma_handle,
scp->request_bufflen,
scp->sc_data_direction
);
}
switch (le32_to_cpu(req->header.result)) {
case IOP_RESULT_SUCCESS:
scp->result = (DID_OK<<16);
break;
case IOP_RESULT_BAD_TARGET:
scp->result = (DID_BAD_TARGET<<16);
break;
case IOP_RESULT_BUSY:
scp->result = (DID_BUS_BUSY<<16);
break;
case IOP_RESULT_RESET:
scp->result = (DID_RESET<<16);
break;
case IOP_RESULT_FAIL:
scp->result = (DID_ERROR<<16);
break;
case IOP_RESULT_INVALID_REQUEST:
scp->result = (DID_ABORT<<16);
break;
case IOP_RESULT_MODE_SENSE_CHECK_CONDITION:
scp->result = SAM_STAT_CHECK_CONDITION;
memset(&scp->sense_buffer,
0, sizeof(scp->sense_buffer));
memcpy(&scp->sense_buffer,
&req->sg_list, le32_to_cpu(req->dataxfer_length));
break;
default:
scp->result = ((DRIVER_INVALID|SUGGEST_ABORT)<<24) |
(DID_ABORT<<16);
break;
}
dprintk("scsi_done(%p)\n", scp);
scp->scsi_done(scp);
free_req(hba, &hba->reqs[tag]);
}
void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
{
struct hpt_iop_request_header __iomem *req;
struct hpt_iop_request_ioctl_command __iomem *p;
struct hpt_ioctl_k *arg;
req = (struct hpt_iop_request_header __iomem *)
((unsigned long)hba->iop + tag);
dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
"result=%d, context=0x%x tag=%d\n",
req, readl(&req->type), readl(&req->result),
readl(&req->context), tag);
BUG_ON(!readl(&req->result));
BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
p = (struct hpt_iop_request_ioctl_command __iomem *)req;
arg = (struct hpt_ioctl_k *)(unsigned long)
(readl(&req->context) |
((u64)readl(&req->context_hi32)<<32));
if (readl(&req->result) == IOP_RESULT_SUCCESS) {
arg->result = HPT_IOCTL_RESULT_OK;
if (arg->outbuf_size)
memcpy_fromio(arg->outbuf,
&p->buf[(readl(&p->inbuf_size) + 3)& ~3],
arg->outbuf_size);
if (arg->bytes_returned)
*arg->bytes_returned = arg->outbuf_size;
}
else
arg->result = HPT_IOCTL_RESULT_FAILED;
arg->done(arg);
writel(tag, &hba->iop->outbound_queue);
}
static irqreturn_t hptiop_intr(int irq, void *dev_id, struct pt_regs *regs)
{
struct hptiop_hba *hba = dev_id;
int handled;
unsigned long flags;
spin_lock_irqsave(hba->host->host_lock, flags);
handled = __iop_intr(hba);
spin_unlock_irqrestore(hba->host->host_lock, flags);
return handled;
}
static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
{
struct Scsi_Host *host = scp->device->host;
struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
struct scatterlist *sglist = (struct scatterlist *)scp->request_buffer;
/*
* though we'll not get non-use_sg fields anymore,
* keep use_sg checking anyway
*/
if (scp->use_sg) {
int idx;
HPT_SCP(scp)->sgcnt = pci_map_sg(hba->pcidev,
sglist, scp->use_sg,
scp->sc_data_direction);
HPT_SCP(scp)->mapped = 1;
BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
for (idx = 0; idx < HPT_SCP(scp)->sgcnt; idx++) {
psg[idx].pci_address =
cpu_to_le64(sg_dma_address(&sglist[idx]));
psg[idx].size = cpu_to_le32(sg_dma_len(&sglist[idx]));
psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
cpu_to_le32(1) : 0;
}
return HPT_SCP(scp)->sgcnt;
} else {
HPT_SCP(scp)->dma_handle = pci_map_single(
hba->pcidev,
scp->request_buffer,
scp->request_bufflen,
scp->sc_data_direction
);
HPT_SCP(scp)->mapped = 1;
psg->pci_address = cpu_to_le64(HPT_SCP(scp)->dma_handle);
psg->size = cpu_to_le32(scp->request_bufflen);
psg->eot = cpu_to_le32(1);
return 1;
}
}
static int hptiop_queuecommand(struct scsi_cmnd *scp,
void (*done)(struct scsi_cmnd *))
{
struct Scsi_Host *host = scp->device->host;
struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
struct hpt_iop_request_scsi_command *req;
int sg_count = 0;
struct hptiop_request *_req;
BUG_ON(!done);
scp->scsi_done = done;
_req = get_req(hba);
if (_req == NULL) {
dprintk("hptiop_queuecmd : no free req\n");
return SCSI_MLQUEUE_HOST_BUSY;
}
_req->scp = scp;
dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%d cdb=(%x-%x-%x) "
"req_index=%d, req=%p\n",
scp,
host->host_no, scp->device->channel,
scp->device->id, scp->device->lun,
*((u32 *)&scp->cmnd),
*((u32 *)&scp->cmnd + 1),
*((u32 *)&scp->cmnd + 2),
_req->index, _req->req_virt);
scp->result = 0;
if (scp->device->channel || scp->device->lun ||
scp->device->id > hba->max_devices) {
scp->result = DID_BAD_TARGET << 16;
free_req(hba, _req);
goto cmd_done;
}
req = (struct hpt_iop_request_scsi_command *)_req->req_virt;
/* build S/G table */
if (scp->request_bufflen)
sg_count = hptiop_buildsgl(scp, req->sg_list);
else
HPT_SCP(scp)->mapped = 0;
req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
(u32)_req->index);
req->header.context_hi32 = 0;
req->dataxfer_length = cpu_to_le32(scp->request_bufflen);
req->channel = scp->device->channel;
req->target = scp->device->id;
req->lun = scp->device->lun;
req->header.size = cpu_to_le32(
sizeof(struct hpt_iop_request_scsi_command)
- sizeof(struct hpt_iopsg)
+ sg_count * sizeof(struct hpt_iopsg));
memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
writel(IOPMU_QUEUE_ADDR_HOST_BIT | _req->req_shifted_phy,
&hba->iop->inbound_queue);
return 0;
cmd_done:
dprintk("scsi_done(scp=%p)\n", scp);
scp->scsi_done(scp);
return 0;
}
static const char *hptiop_info(struct Scsi_Host *host)
{
return driver_name_long;
}
static int hptiop_reset_hba(struct hptiop_hba *hba)
{
if (atomic_xchg(&hba->resetting, 1) == 0) {
atomic_inc(&hba->reset_count);
writel(IOPMU_INBOUND_MSG0_RESET,
&hba->iop->outbound_msgaddr0);
hptiop_pci_posting_flush(hba->iop);
}
wait_event_timeout(hba->reset_wq,
atomic_read(&hba->resetting) == 0, 60 * HZ);
if (atomic_read(&hba->resetting)) {
/* IOP is in unkown state, abort reset */
printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
return -1;
}
if (iop_send_sync_msg(hba,
IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
dprintk("scsi%d: fail to start background task\n",
hba->host->host_no);
}
return 0;
}
static int hptiop_reset(struct scsi_cmnd *scp)
{
struct Scsi_Host * host = scp->device->host;
struct hptiop_hba * hba = (struct hptiop_hba *)host->hostdata;
printk(KERN_WARNING "hptiop_reset(%d/%d/%d) scp=%p\n",
scp->device->host->host_no, scp->device->channel,
scp->device->id, scp);
return hptiop_reset_hba(hba)? FAILED : SUCCESS;
}
static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
int queue_depth)
{
if(queue_depth > 256)
queue_depth = 256;
scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
return queue_depth;
}
struct hptiop_getinfo {
char __user *buffer;
loff_t buflength;
loff_t bufoffset;
loff_t buffillen;
loff_t filpos;
};
static void hptiop_copy_mem_info(struct hptiop_getinfo *pinfo,
char *data, int datalen)
{
if (pinfo->filpos < pinfo->bufoffset) {
if (pinfo->filpos + datalen <= pinfo->bufoffset) {
pinfo->filpos += datalen;
return;
} else {
data += (pinfo->bufoffset - pinfo->filpos);
datalen -= (pinfo->bufoffset - pinfo->filpos);
pinfo->filpos = pinfo->bufoffset;
}
}
pinfo->filpos += datalen;
if (pinfo->buffillen == pinfo->buflength)
return;
if (pinfo->buflength - pinfo->buffillen < datalen)
datalen = pinfo->buflength - pinfo->buffillen;
if (copy_to_user(pinfo->buffer + pinfo->buffillen, data, datalen))
return;
pinfo->buffillen += datalen;
}
static int hptiop_copy_info(struct hptiop_getinfo *pinfo, char *fmt, ...)
{
va_list args;
char buf[128];
int len;
va_start(args, fmt);
len = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
hptiop_copy_mem_info(pinfo, buf, len);
return len;
}
static void hptiop_ioctl_done(struct hpt_ioctl_k *arg)
{
arg->done = NULL;
wake_up(&arg->hba->ioctl_wq);
}
static void hptiop_do_ioctl(struct hpt_ioctl_k *arg)
{
struct hptiop_hba *hba = arg->hba;
u32 val;
struct hpt_iop_request_ioctl_command __iomem *req;
int ioctl_retry = 0;
dprintk("scsi%d: hptiop_do_ioctl\n", hba->host->host_no);
/*
* check (in + out) buff size from application.
* outbuf must be dword aligned.
*/
if (((arg->inbuf_size + 3) & ~3) + arg->outbuf_size >
hba->max_request_size
- sizeof(struct hpt_iop_request_header)
- 4 * sizeof(u32)) {
dprintk("scsi%d: ioctl buf size (%d/%d) is too large\n",
hba->host->host_no,
arg->inbuf_size, arg->outbuf_size);
arg->result = HPT_IOCTL_RESULT_FAILED;
return;
}
retry:
spin_lock_irq(hba->host->host_lock);
val = readl(&hba->iop->inbound_queue);
if (val == IOPMU_QUEUE_EMPTY) {
spin_unlock_irq(hba->host->host_lock);
dprintk("scsi%d: no free req for ioctl\n", hba->host->host_no);
arg->result = -1;
return;
}
req = (struct hpt_iop_request_ioctl_command __iomem *)
((unsigned long)hba->iop + val);
writel(HPT_CTL_CODE_LINUX_TO_IOP(arg->ioctl_code),
&req->ioctl_code);
writel(arg->inbuf_size, &req->inbuf_size);
writel(arg->outbuf_size, &req->outbuf_size);
/*
* use the buffer on the IOP local memory first, then copy it
* back to host.
* the caller's request buffer shoudl be little-endian.
*/
if (arg->inbuf_size)
memcpy_toio(req->buf, arg->inbuf, arg->inbuf_size);
/* correct the controller ID for IOP */
if ((arg->ioctl_code == HPT_IOCTL_GET_CHANNEL_INFO ||
arg->ioctl_code == HPT_IOCTL_GET_CONTROLLER_INFO_V2 ||
arg->ioctl_code == HPT_IOCTL_GET_CONTROLLER_INFO)
&& arg->inbuf_size >= sizeof(u32))
writel(0, req->buf);
writel(IOP_REQUEST_TYPE_IOCTL_COMMAND, &req->header.type);
writel(0, &req->header.flags);
writel(offsetof(struct hpt_iop_request_ioctl_command, buf)
+ arg->inbuf_size, &req->header.size);
writel((u32)(unsigned long)arg, &req->header.context);
writel(BITS_PER_LONG > 32 ? (u32)((unsigned long)arg>>32) : 0,
&req->header.context_hi32);
writel(IOP_RESULT_PENDING, &req->header.result);
arg->result = HPT_IOCTL_RESULT_FAILED;
arg->done = hptiop_ioctl_done;
writel(val, &hba->iop->inbound_queue);
hptiop_pci_posting_flush(hba->iop);
spin_unlock_irq(hba->host->host_lock);
wait_event_timeout(hba->ioctl_wq, arg->done == NULL, 60 * HZ);
if (arg->done != NULL) {
hptiop_reset_hba(hba);
if (ioctl_retry++ < 3)
goto retry;
}
dprintk("hpt_iop_ioctl %x result %d\n",
arg->ioctl_code, arg->result);
}
static int __hpt_do_ioctl(struct hptiop_hba *hba, u32 code, void *inbuf,
u32 insize, void *outbuf, u32 outsize)
{
struct hpt_ioctl_k arg;
arg.hba = hba;
arg.ioctl_code = code;
arg.inbuf = inbuf;
arg.outbuf = outbuf;
arg.inbuf_size = insize;
arg.outbuf_size = outsize;
arg.bytes_returned = NULL;
hptiop_do_ioctl(&arg);
return arg.result;
}
static inline int hpt_id_valid(__le32 id)
{
return id != 0 && id != cpu_to_le32(0xffffffff);
}
static int hptiop_get_controller_info(struct hptiop_hba *hba,
struct hpt_controller_info *pinfo)
{
int id = 0;
return __hpt_do_ioctl(hba, HPT_IOCTL_GET_CONTROLLER_INFO,
&id, sizeof(int), pinfo, sizeof(*pinfo));
}
static int hptiop_get_channel_info(struct hptiop_hba *hba, int bus,
struct hpt_channel_info *pinfo)
{
u32 ids[2];
ids[0] = 0;
ids[1] = bus;
return __hpt_do_ioctl(hba, HPT_IOCTL_GET_CHANNEL_INFO,
ids, sizeof(ids), pinfo, sizeof(*pinfo));
}
static int hptiop_get_logical_devices(struct hptiop_hba *hba,
__le32 *pids, int maxcount)
{
int i;
u32 count = maxcount - 1;
if (__hpt_do_ioctl(hba, HPT_IOCTL_GET_LOGICAL_DEVICES,
&count, sizeof(u32),
pids, sizeof(u32) * maxcount))
return -1;
maxcount = le32_to_cpu(pids[0]);
for (i = 0; i < maxcount; i++)
pids[i] = pids[i+1];
return maxcount;
}
static int hptiop_get_device_info_v3(struct hptiop_hba *hba, __le32 id,
struct hpt_logical_device_info_v3 *pinfo)
{
return __hpt_do_ioctl(hba, HPT_IOCTL_GET_DEVICE_INFO_V3,
&id, sizeof(u32),
pinfo, sizeof(*pinfo));
}
static const char *get_array_status(struct hpt_logical_device_info_v3 *devinfo)
{
static char s[64];
u32 flags = le32_to_cpu(devinfo->u.array.flags);
u32 trans_prog = le32_to_cpu(devinfo->u.array.transforming_progress);
u32 reb_prog = le32_to_cpu(devinfo->u.array.rebuilding_progress);
if (flags & ARRAY_FLAG_DISABLED)
return "Disabled";
else if (flags & ARRAY_FLAG_TRANSFORMING)
sprintf(s, "Expanding/Migrating %d.%d%%%s%s",
trans_prog / 100,
trans_prog % 100,
(flags & (ARRAY_FLAG_NEEDBUILDING|ARRAY_FLAG_BROKEN))?
", Critical" : "",
((flags & ARRAY_FLAG_NEEDINITIALIZING) &&
!(flags & ARRAY_FLAG_REBUILDING) &&
!(flags & ARRAY_FLAG_INITIALIZING))?
", Unintialized" : "");
else if ((flags & ARRAY_FLAG_BROKEN) &&
devinfo->u.array.array_type != AT_RAID6)
return "Critical";
else if (flags & ARRAY_FLAG_REBUILDING)
sprintf(s,
(flags & ARRAY_FLAG_NEEDINITIALIZING)?
"%sBackground initializing %d.%d%%" :
"%sRebuilding %d.%d%%",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "",
reb_prog / 100,
reb_prog % 100);
else if (flags & ARRAY_FLAG_VERIFYING)
sprintf(s, "%sVerifying %d.%d%%",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "",
reb_prog / 100,
reb_prog % 100);
else if (flags & ARRAY_FLAG_INITIALIZING)
sprintf(s, "%sForground initializing %d.%d%%",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "",
reb_prog / 100,
reb_prog % 100);
else if (flags & ARRAY_FLAG_NEEDTRANSFORM)
sprintf(s,"%s%s%s", "Need Expanding/Migrating",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "",
((flags & ARRAY_FLAG_NEEDINITIALIZING) &&
!(flags & ARRAY_FLAG_REBUILDING) &&
!(flags & ARRAY_FLAG_INITIALIZING))?
", Unintialized" : "");
else if (flags & ARRAY_FLAG_NEEDINITIALIZING &&
!(flags & ARRAY_FLAG_REBUILDING) &&
!(flags & ARRAY_FLAG_INITIALIZING))
sprintf(s,"%sUninitialized",
(flags & ARRAY_FLAG_BROKEN)? "Critical, " : "");
else if ((flags & ARRAY_FLAG_NEEDBUILDING) ||
(flags & ARRAY_FLAG_BROKEN))
return "Critical";
else
return "Normal";
return s;
}
static void hptiop_dump_devinfo(struct hptiop_hba *hba,
struct hptiop_getinfo *pinfo, __le32 id, int indent)
{
struct hpt_logical_device_info_v3 devinfo;
int i;
u64 capacity;
for (i = 0; i < indent; i++)
hptiop_copy_info(pinfo, "\t");
if (hptiop_get_device_info_v3(hba, id, &devinfo)) {
hptiop_copy_info(pinfo, "unknown\n");
return;
}
switch (devinfo.type) {
case LDT_DEVICE: {
struct hd_driveid *driveid;
u32 flags = le32_to_cpu(devinfo.u.device.flags);
driveid = (struct hd_driveid *)devinfo.u.device.ident;
/* model[] is 40 chars long, but we just want 20 chars here */
driveid->model[20] = 0;
if (indent)
if (flags & DEVICE_FLAG_DISABLED)
hptiop_copy_info(pinfo,"Missing\n");
else
hptiop_copy_info(pinfo, "CH%d %s\n",
devinfo.u.device.path_id + 1,
driveid->model);
else {
capacity = le64_to_cpu(devinfo.capacity) * 512;
do_div(capacity, 1000000);
hptiop_copy_info(pinfo,
"CH%d %s, %lluMB, %s %s%s%s%s\n",
devinfo.u.device.path_id + 1,
driveid->model,
capacity,
(flags & DEVICE_FLAG_DISABLED)?
"Disabled" : "Normal",
devinfo.u.device.read_ahead_enabled?
"[RA]" : "",
devinfo.u.device.write_cache_enabled?
"[WC]" : "",
devinfo.u.device.TCQ_enabled?
"[TCQ]" : "",
devinfo.u.device.NCQ_enabled?
"[NCQ]" : ""
);
}
break;
}
case LDT_ARRAY:
if (devinfo.target_id != INVALID_TARGET_ID)
hptiop_copy_info(pinfo, "[DISK %d_%d] ",
devinfo.vbus_id, devinfo.target_id);
capacity = le64_to_cpu(devinfo.capacity) * 512;
do_div(capacity, 1000000);
hptiop_copy_info(pinfo, "%s (%s), %lluMB, %s\n",
devinfo.u.array.name,
devinfo.u.array.array_type==AT_RAID0? "RAID0" :
devinfo.u.array.array_type==AT_RAID1? "RAID1" :
devinfo.u.array.array_type==AT_RAID5? "RAID5" :
devinfo.u.array.array_type==AT_RAID6? "RAID6" :
devinfo.u.array.array_type==AT_JBOD? "JBOD" :
"unknown",
capacity,
get_array_status(&devinfo));
for (i = 0; i < devinfo.u.array.ndisk; i++) {
if (hpt_id_valid(devinfo.u.array.members[i])) {
if (cpu_to_le16(1<<i) &
devinfo.u.array.critical_members)
hptiop_copy_info(pinfo, "\t*");
hptiop_dump_devinfo(hba, pinfo,
devinfo.u.array.members[i], indent+1);
}
else
hptiop_copy_info(pinfo, "\tMissing\n");
}
if (id == devinfo.u.array.transform_source) {
hptiop_copy_info(pinfo, "\tExpanding/Migrating to:\n");
hptiop_dump_devinfo(hba, pinfo,
devinfo.u.array.transform_target, indent+1);
}
break;
}
}
static ssize_t hptiop_show_version(struct class_device *class_dev, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
}
static ssize_t hptiop_cdev_read(struct file *filp, char __user *buf,
size_t count, loff_t *ppos)
{
struct hptiop_hba *hba = filp->private_data;
struct hptiop_getinfo info;
int i, j, ndev;
struct hpt_controller_info con_info;
struct hpt_channel_info chan_info;
__le32 ids[32];
info.buffer = buf;
info.buflength = count;
info.bufoffset = ppos ? *ppos : 0;
info.filpos = 0;
info.buffillen = 0;
if (hptiop_get_controller_info(hba, &con_info))
return -EIO;
for (i = 0; i < con_info.num_buses; i++) {
if (hptiop_get_channel_info(hba, i, &chan_info) == 0) {
if (hpt_id_valid(chan_info.devices[0]))
hptiop_dump_devinfo(hba, &info,
chan_info.devices[0], 0);
if (hpt_id_valid(chan_info.devices[1]))
hptiop_dump_devinfo(hba, &info,
chan_info.devices[1], 0);
}
}
ndev = hptiop_get_logical_devices(hba, ids,
sizeof(ids) / sizeof(ids[0]));
/*
* if hptiop_get_logical_devices fails, ndev==-1 and it just
* output nothing here
*/
for (j = 0; j < ndev; j++)
hptiop_dump_devinfo(hba, &info, ids[j], 0);
if (ppos)
*ppos += info.buffillen;
return info.buffillen;
}
static int hptiop_cdev_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct hptiop_hba *hba = file->private_data;
struct hpt_ioctl_u ioctl_u;
struct hpt_ioctl_k ioctl_k;
u32 bytes_returned;
int err = -EINVAL;
if (copy_from_user(&ioctl_u,
(void __user *)arg, sizeof(struct hpt_ioctl_u)))
return -EINVAL;
if (ioctl_u.magic != HPT_IOCTL_MAGIC)
return -EINVAL;
ioctl_k.ioctl_code = ioctl_u.ioctl_code;
ioctl_k.inbuf = NULL;
ioctl_k.inbuf_size = ioctl_u.inbuf_size;
ioctl_k.outbuf = NULL;
ioctl_k.outbuf_size = ioctl_u.outbuf_size;
ioctl_k.hba = hba;
ioctl_k.bytes_returned = &bytes_returned;
/* verify user buffer */
if ((ioctl_k.inbuf_size && !access_ok(VERIFY_READ,
ioctl_u.inbuf, ioctl_k.inbuf_size)) ||
(ioctl_k.outbuf_size && !access_ok(VERIFY_WRITE,
ioctl_u.outbuf, ioctl_k.outbuf_size)) ||
(ioctl_u.bytes_returned && !access_ok(VERIFY_WRITE,
ioctl_u.bytes_returned, sizeof(u32))) ||
ioctl_k.inbuf_size + ioctl_k.outbuf_size > 0x10000) {
dprintk("scsi%d: got bad user address\n", hba->host->host_no);
return -EINVAL;
}
/* map buffer to kernel. */
if (ioctl_k.inbuf_size) {
ioctl_k.inbuf = kmalloc(ioctl_k.inbuf_size, GFP_KERNEL);
if (!ioctl_k.inbuf) {
dprintk("scsi%d: fail to alloc inbuf\n",
hba->host->host_no);
err = -ENOMEM;
goto err_exit;
}
if (copy_from_user(ioctl_k.inbuf,
ioctl_u.inbuf, ioctl_k.inbuf_size)) {
goto err_exit;
}
}
if (ioctl_k.outbuf_size) {
ioctl_k.outbuf = kmalloc(ioctl_k.outbuf_size, GFP_KERNEL);
if (!ioctl_k.outbuf) {
dprintk("scsi%d: fail to alloc outbuf\n",
hba->host->host_no);
err = -ENOMEM;
goto err_exit;
}
}
hptiop_do_ioctl(&ioctl_k);
if (ioctl_k.result == HPT_IOCTL_RESULT_OK) {
if (ioctl_k.outbuf_size &&
copy_to_user(ioctl_u.outbuf,
ioctl_k.outbuf, ioctl_k.outbuf_size))
goto err_exit;
if (ioctl_u.bytes_returned &&
copy_to_user(ioctl_u.bytes_returned,
&bytes_returned, sizeof(u32)))
goto err_exit;
err = 0;
}
err_exit:
kfree(ioctl_k.inbuf);
kfree(ioctl_k.outbuf);
return err;
}
static int hptiop_cdev_open(struct inode *inode, struct file *file)
{
struct hptiop_hba *hba;
unsigned i = 0, minor = iminor(inode);
int ret = -ENODEV;
spin_lock(&hptiop_hba_list_lock);
list_for_each_entry(hba, &hptiop_hba_list, link) {
if (i == minor) {
file->private_data = hba;
ret = 0;
goto out;
}
i++;
}
out:
spin_unlock(&hptiop_hba_list_lock);
return ret;
}
static struct file_operations hptiop_cdev_fops = {
.owner = THIS_MODULE,
.read = hptiop_cdev_read,
.ioctl = hptiop_cdev_ioctl,
.open = hptiop_cdev_open,
};
static ssize_t hptiop_show_fw_version(struct class_device *class_dev, char *buf)
{
struct Scsi_Host *host = class_to_shost(class_dev);
struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
hba->firmware_version >> 24,
(hba->firmware_version >> 16) & 0xff,
(hba->firmware_version >> 8) & 0xff,
hba->firmware_version & 0xff);
}
static struct class_device_attribute hptiop_attr_version = {
.attr = {
.name = "driver-version",
.mode = S_IRUGO,
},
.show = hptiop_show_version,
};
static struct class_device_attribute hptiop_attr_fw_version = {
.attr = {
.name = "firmware-version",
.mode = S_IRUGO,
},
.show = hptiop_show_fw_version,
};
static struct class_device_attribute *hptiop_attrs[] = {
&hptiop_attr_version,
&hptiop_attr_fw_version,
NULL
};
static struct scsi_host_template driver_template = {
.module = THIS_MODULE,
.name = driver_name,
.queuecommand = hptiop_queuecommand,
.eh_device_reset_handler = hptiop_reset,
.eh_bus_reset_handler = hptiop_reset,
.info = hptiop_info,
.unchecked_isa_dma = 0,
.emulated = 0,
.use_clustering = ENABLE_CLUSTERING,
.proc_name = driver_name,
.shost_attrs = hptiop_attrs,
.this_id = -1,
.change_queue_depth = hptiop_adjust_disk_queue_depth,
};
static int __devinit hptiop_probe(struct pci_dev *pcidev,
const struct pci_device_id *id)
{
struct Scsi_Host *host = NULL;
struct hptiop_hba *hba;
struct hpt_iop_request_get_config iop_config;
struct hpt_iop_request_set_config set_config;
dma_addr_t start_phy;
void *start_virt;
u32 offset, i, req_size;
dprintk("hptiop_probe(%p)\n", pcidev);
if (pci_enable_device(pcidev)) {
printk(KERN_ERR "hptiop: fail to enable pci device\n");
return -ENODEV;
}
printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
pcidev->irq);
pci_set_master(pcidev);
/* Enable 64bit DMA if possible */
if (pci_set_dma_mask(pcidev, DMA_64BIT_MASK)) {
if (pci_set_dma_mask(pcidev, DMA_32BIT_MASK)) {
printk(KERN_ERR "hptiop: fail to set dma_mask\n");
goto disable_pci_device;
}
}
if (pci_request_regions(pcidev, driver_name)) {
printk(KERN_ERR "hptiop: pci_request_regions failed\n");
goto disable_pci_device;
}
host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
if (!host) {
printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
goto free_pci_regions;
}
hba = (struct hptiop_hba *)host->hostdata;
hba->pcidev = pcidev;
hba->host = host;
hba->initialized = 0;
atomic_set(&hba->resetting, 0);
atomic_set(&hba->reset_count, 0);
init_waitqueue_head(&hba->reset_wq);
init_waitqueue_head(&hba->ioctl_wq);
host->max_lun = 1;
host->max_channel = 0;
host->io_port = 0;
host->n_io_port = 0;
host->irq = pcidev->irq;
if (hptiop_map_pci_bar(hba))
goto free_scsi_host;
if (iop_wait_ready(hba->iop, 20000)) {
printk(KERN_ERR "scsi%d: firmware not ready\n",
hba->host->host_no);
goto unmap_pci_bar;
}
if (iop_get_config(hba, &iop_config)) {
printk(KERN_ERR "scsi%d: get config failed\n",
hba->host->host_no);
goto unmap_pci_bar;
}
hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
HPTIOP_MAX_REQUESTS);
hba->max_devices = le32_to_cpu(iop_config.max_devices);
hba->max_request_size = le32_to_cpu(iop_config.request_size);
hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
host->max_id = le32_to_cpu(iop_config.max_devices);
host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
host->can_queue = le32_to_cpu(iop_config.max_requests);
host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
host->max_cmd_len = 16;
set_config.vbus_id = cpu_to_le32(host->host_no);
set_config.iop_id = cpu_to_le32(host->host_no);
if (iop_set_config(hba, &set_config)) {
printk(KERN_ERR "scsi%d: set config failed\n",
hba->host->host_no);
goto unmap_pci_bar;
}
if (scsi_add_host(host, &pcidev->dev)) {
printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
hba->host->host_no);
goto unmap_pci_bar;
}
pci_set_drvdata(pcidev, host);
if (request_irq(pcidev->irq, hptiop_intr, SA_SHIRQ,
driver_name, hba)) {
printk(KERN_ERR "scsi%d: request irq %d failed\n",
hba->host->host_no, pcidev->irq);
goto remove_scsi_host;
}
/* Allocate request mem */
req_size = sizeof(struct hpt_iop_request_scsi_command)
+ sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
if ((req_size& 0x1f) != 0)
req_size = (req_size + 0x1f) & ~0x1f;
dprintk("req_size=%d, max_requests=%d\n", req_size, hba->max_requests);
hba->req_size = req_size;
start_virt = dma_alloc_coherent(&pcidev->dev,
hba->req_size*hba->max_requests + 0x20,
&start_phy, GFP_KERNEL);
if (!start_virt) {
printk(KERN_ERR "scsi%d: fail to alloc request mem\n",
hba->host->host_no);
goto free_request_irq;
}
hba->dma_coherent = start_virt;
hba->dma_coherent_handle = start_phy;
if ((start_phy & 0x1f) != 0)
{
offset = ((start_phy + 0x1f) & ~0x1f) - start_phy;
start_phy += offset;
start_virt += offset;
}
hba->req_list = start_virt;
for (i = 0; i < hba->max_requests; i++) {
hba->reqs[i].next = NULL;
hba->reqs[i].req_virt = start_virt;
hba->reqs[i].req_shifted_phy = start_phy >> 5;
hba->reqs[i].index = i;
free_req(hba, &hba->reqs[i]);
start_virt = (char *)start_virt + hba->req_size;
start_phy = start_phy + hba->req_size;
}
/* Enable Interrupt and start background task */
if (hptiop_initialize_iop(hba))
goto free_request_mem;
spin_lock(&hptiop_hba_list_lock);
list_add_tail(&hba->link, &hptiop_hba_list);
spin_unlock(&hptiop_hba_list_lock);
scsi_scan_host(host);
dprintk("scsi%d: hptiop_probe successfully\n", hba->host->host_no);
return 0;
free_request_mem:
dma_free_coherent(&hba->pcidev->dev,
hba->req_size*hba->max_requests + 0x20,
hba->dma_coherent, hba->dma_coherent_handle);
free_request_irq:
free_irq(hba->pcidev->irq, hba);
remove_scsi_host:
scsi_remove_host(host);
unmap_pci_bar:
iounmap(hba->iop);
free_pci_regions:
pci_release_regions(pcidev) ;
free_scsi_host:
scsi_host_put(host);
disable_pci_device:
pci_disable_device(pcidev);
dprintk("scsi%d: hptiop_probe fail\n", host->host_no);
return -ENODEV;
}
static void hptiop_shutdown(struct pci_dev *pcidev)
{
struct Scsi_Host *host = pci_get_drvdata(pcidev);
struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
struct hpt_iopmu __iomem *iop = hba->iop;
u32 int_mask;
dprintk("hptiop_shutdown(%p)\n", hba);
/* stop the iop */
if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_SHUTDOWN, 60000))
printk(KERN_ERR "scsi%d: shutdown the iop timeout\n",
hba->host->host_no);
/* disable all outbound interrupts */
int_mask = readl(&iop->outbound_intmask);
writel(int_mask |
IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
&iop->outbound_intmask);
hptiop_pci_posting_flush(iop);
}
static void hptiop_remove(struct pci_dev *pcidev)
{
struct Scsi_Host *host = pci_get_drvdata(pcidev);
struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
dprintk("scsi%d: hptiop_remove\n", hba->host->host_no);
scsi_remove_host(host);
spin_lock(&hptiop_hba_list_lock);
list_del_init(&hba->link);
spin_unlock(&hptiop_hba_list_lock);
hptiop_shutdown(pcidev);
free_irq(hba->pcidev->irq, hba);
dma_free_coherent(&hba->pcidev->dev,
hba->req_size * hba->max_requests + 0x20,
hba->dma_coherent,
hba->dma_coherent_handle);
iounmap(hba->iop);
pci_release_regions(hba->pcidev);
pci_set_drvdata(hba->pcidev, NULL);
pci_disable_device(hba->pcidev);
scsi_host_put(host);
}
static struct pci_device_id hptiop_id_table[] = {
{ PCI_DEVICE(0x1103, 0x3220) },
{ PCI_DEVICE(0x1103, 0x3320) },
{},
};
MODULE_DEVICE_TABLE(pci, hptiop_id_table);
static struct pci_driver hptiop_pci_driver = {
.name = driver_name,
.id_table = hptiop_id_table,
.probe = hptiop_probe,
.remove = hptiop_remove,
.shutdown = hptiop_shutdown,
};
static int __init hptiop_module_init(void)
{
int error;
printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
error = pci_register_driver(&hptiop_pci_driver);
if (error < 0)
return error;
hptiop_cdev_major = register_chrdev(0, "hptiop", &hptiop_cdev_fops);
if (hptiop_cdev_major < 0) {
printk(KERN_WARNING "unable to register hptiop device.\n");
return hptiop_cdev_major;
}
return 0;
}
static void __exit hptiop_module_exit(void)
{
dprintk("hptiop_module_exit\n");
unregister_chrdev(hptiop_cdev_major, "hptiop");
pci_unregister_driver(&hptiop_pci_driver);
}
module_init(hptiop_module_init);
module_exit(hptiop_module_exit);
MODULE_LICENSE("GPL");
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