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linux-davinci-2.6.23
Commit 3e74051b authored by Christoph Hellwig's avatar Christoph Hellwig Committed by James Bottomley
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[SCSI] hptiop: backout ioctl mess 

The hptiop just got merged with a horrible amount of really bad ioctl
code that is against the standards for new scsi drivers.  This patch
backs it out (and fixes a small bug where scsi_add_host is called to
early).  We can re-add proper APIs once we agree on them.
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 00dd7b7d
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Showing with 8 additions and 558 deletions
drivers/scsi/hptiop.c
View file @ 3e74051b
......@@ -45,10 +45,6 @@ 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);
......@@ -620,532 +616,11 @@ static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
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);
......@@ -1296,19 +771,13 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
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, IRQF_SHARED,
driver_name, hba)) {
printk(KERN_ERR "scsi%d: request irq %d failed\n",
hba->host->host_no, pcidev->irq);
goto remove_scsi_host;
goto unmap_pci_bar;
}
/* Allocate request mem */
......@@ -1355,9 +824,12 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
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);
if (scsi_add_host(host, &pcidev->dev)) {
printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
hba->host->host_no);
goto free_request_mem;
}
scsi_scan_host(host);
......@@ -1372,9 +844,6 @@ free_request_mem:
free_request_irq:
free_irq(hba->pcidev->irq, hba);
remove_scsi_host:
scsi_remove_host(host);
unmap_pci_bar:
iounmap(hba->iop);
......@@ -1422,10 +891,6 @@ static void hptiop_remove(struct pci_dev *pcidev)
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);
......@@ -1462,27 +927,12 @@ static struct pci_driver hptiop_pci_driver = {
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;
return pci_register_driver(&hptiop_pci_driver);
}
static void __exit hptiop_module_exit(void)
{
dprintk("hptiop_module_exit\n");
unregister_chrdev(hptiop_cdev_major, "hptiop");
pci_unregister_driver(&hptiop_pci_driver);
}
......
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