Release 4.11 drivers/scsi/aacraid/commctrl.c
/*
* Adaptec AAC series RAID controller driver
* (c) Copyright 2001 Red Hat Inc.
*
* based on the old aacraid driver that is..
* Adaptec aacraid device driver for Linux.
*
* Copyright (c) 2000-2010 Adaptec, Inc.
* 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
* 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
*
* 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; either version 2, or (at your option)
* any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Module Name:
* commctrl.c
*
* Abstract: Contains all routines for control of the AFA comm layer
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/completion.h>
#include <linux/dma-mapping.h>
#include <linux/blkdev.h>
#include <linux/delay.h> /* ssleep prototype */
#include <linux/kthread.h>
#include <linux/semaphore.h>
#include <linux/uaccess.h>
#include <scsi/scsi_host.h>
#include "aacraid.h"
/**
* ioctl_send_fib - send a FIB from userspace
* @dev: adapter is being processed
* @arg: arguments to the ioctl call
*
* This routine sends a fib to the adapter on behalf of a user level
* program.
*/
# define AAC_DEBUG_PREAMBLE KERN_INFO
# define AAC_DEBUG_POSTAMBLE
static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
{
struct hw_fib * kfib;
struct fib *fibptr;
struct hw_fib * hw_fib = (struct hw_fib *)0;
dma_addr_t hw_fib_pa = (dma_addr_t)0LL;
unsigned int size, osize;
int retval;
if (dev->in_reset) {
return -EBUSY;
}
fibptr = aac_fib_alloc(dev);
if(fibptr == NULL) {
return -ENOMEM;
}
kfib = fibptr->hw_fib_va;
/*
* First copy in the header so that we can check the size field.
*/
if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) {
aac_fib_free(fibptr);
return -EFAULT;
}
/*
* Since we copy based on the fib header size, make sure that we
* will not overrun the buffer when we copy the memory. Return
* an error if we would.
*/
osize = size = le16_to_cpu(kfib->header.Size) +
sizeof(struct aac_fibhdr);
if (size < le16_to_cpu(kfib->header.SenderSize))
size = le16_to_cpu(kfib->header.SenderSize);
if (size > dev->max_fib_size) {
dma_addr_t daddr;
if (size > 2048) {
retval = -EINVAL;
goto cleanup;
}
kfib = pci_alloc_consistent(dev->pdev, size, &daddr);
if (!kfib) {
retval = -ENOMEM;
goto cleanup;
}
/* Highjack the hw_fib */
hw_fib = fibptr->hw_fib_va;
hw_fib_pa = fibptr->hw_fib_pa;
fibptr->hw_fib_va = kfib;
fibptr->hw_fib_pa = daddr;
memset(((char *)kfib) + dev->max_fib_size, 0, size - dev->max_fib_size);
memcpy(kfib, hw_fib, dev->max_fib_size);
}
if (copy_from_user(kfib, arg, size)) {
retval = -EFAULT;
goto cleanup;
}
/* Sanity check the second copy */
if ((osize != le16_to_cpu(kfib->header.Size) +
sizeof(struct aac_fibhdr))
|| (size < le16_to_cpu(kfib->header.SenderSize))) {
retval = -EINVAL;
goto cleanup;
}
if (kfib->header.Command == cpu_to_le16(TakeABreakPt)) {
aac_adapter_interrupt(dev);
/*
* Since we didn't really send a fib, zero out the state to allow
* cleanup code not to assert.
*/
kfib->header.XferState = 0;
} else {
retval = aac_fib_send(le16_to_cpu(kfib->header.Command), fibptr,
le16_to_cpu(kfib->header.Size) , FsaNormal,
1, 1, NULL, NULL);
if (retval) {
goto cleanup;
}
if (aac_fib_complete(fibptr) != 0) {
retval = -EINVAL;
goto cleanup;
}
}
/*
* Make sure that the size returned by the adapter (which includes
* the header) is less than or equal to the size of a fib, so we
* don't corrupt application data. Then copy that size to the user
* buffer. (Don't try to add the header information again, since it
* was already included by the adapter.)
*/
retval = 0;
if (copy_to_user(arg, (void *)kfib, size))
retval = -EFAULT;
cleanup:
if (hw_fib) {
pci_free_consistent(dev->pdev, size, kfib, fibptr->hw_fib_pa);
fibptr->hw_fib_pa = hw_fib_pa;
fibptr->hw_fib_va = hw_fib;
}
if (retval != -ERESTARTSYS)
aac_fib_free(fibptr);
return retval;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark Haverkamp | 224 | 43.08% | 9 | 60.00% |
| Alan Cox | 208 | 40.00% | 1 | 6.67% |
| Dave Carroll | 50 | 9.62% | 1 | 6.67% |
| FUJITA Tomonori | 35 | 6.73% | 1 | 6.67% |
| Mark Salyzyn | 1 | 0.19% | 1 | 6.67% |
| Penchala Narasimha Reddy Chilakala, ERS-HCLTech | 1 | 0.19% | 1 | 6.67% |
| Al Viro | 1 | 0.19% | 1 | 6.67% |
| Total | 520 | 100.00% | 15 | 100.00% |
/**
* open_getadapter_fib - Get the next fib
*
* This routine will get the next Fib, if available, from the AdapterFibContext
* passed in from the user.
*/
static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
{
struct aac_fib_context * fibctx;
int status;
fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL);
if (fibctx == NULL) {
status = -ENOMEM;
} else {
unsigned long flags;
struct list_head * entry;
struct aac_fib_context * context;
fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT;
fibctx->size = sizeof(struct aac_fib_context);
/*
* Yes yes, I know this could be an index, but we have a
* better guarantee of uniqueness for the locked loop below.
* Without the aid of a persistent history, this also helps
* reduce the chance that the opaque context would be reused.
*/
fibctx->unique = (u32)((ulong)fibctx & 0xFFFFFFFF);
/*
* Initialize the mutex used to wait for the next AIF.
*/
sema_init(&fibctx->wait_sem, 0);
fibctx->wait = 0;
/*
* Initialize the fibs and set the count of fibs on
* the list to 0.
*/
fibctx->count = 0;
INIT_LIST_HEAD(&fibctx->fib_list);
fibctx->jiffies = jiffies/HZ;
/*
* Now add this context onto the adapter's
* AdapterFibContext list.
*/
spin_lock_irqsave(&dev->fib_lock, flags);
/* Ensure that we have a unique identifier */
entry = dev->fib_list.next;
while (entry != &dev->fib_list) {
context = list_entry(entry, struct aac_fib_context, next);
if (context->unique == fibctx->unique) {
/* Not unique (32 bits) */
fibctx->unique++;
entry = dev->fib_list.next;
} else {
entry = entry->next;
}
}
list_add_tail(&fibctx->next, &dev->fib_list);
spin_unlock_irqrestore(&dev->fib_lock, flags);
if (copy_to_user(arg, &fibctx->unique,
sizeof(fibctx->unique))) {
status = -EFAULT;
} else {
status = 0;
}
}
return status;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alan Cox | 169 | 61.01% | 2 | 33.33% |
| Mark Haverkamp | 103 | 37.18% | 1 | 16.67% |
| Thomas Gleixner | 3 | 1.08% | 1 | 16.67% |
| Mark Salyzyn | 1 | 0.36% | 1 | 16.67% |
| Al Viro | 1 | 0.36% | 1 | 16.67% |
| Total | 277 | 100.00% | 6 | 100.00% |
/**
* next_getadapter_fib - get the next fib
* @dev: adapter to use
* @arg: ioctl argument
*
* This routine will get the next Fib, if available, from the AdapterFibContext
* passed in from the user.
*/
static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
{
struct fib_ioctl f;
struct fib *fib;
struct aac_fib_context *fibctx;
int status;
struct list_head * entry;
unsigned long flags;
if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl)))
return -EFAULT;
/*
* Verify that the HANDLE passed in was a valid AdapterFibContext
*
* Search the list of AdapterFibContext addresses on the adapter
* to be sure this is a valid address
*/
spin_lock_irqsave(&dev->fib_lock, flags);
entry = dev->fib_list.next;
fibctx = NULL;
while (entry != &dev->fib_list) {
fibctx = list_entry(entry, struct aac_fib_context, next);
/*
* Extract the AdapterFibContext from the Input parameters.
*/
if (fibctx->unique == f.fibctx) { /* We found a winner */
break;
}
entry = entry->next;
fibctx = NULL;
}
if (!fibctx) {
spin_unlock_irqrestore(&dev->fib_lock, flags);
dprintk ((KERN_INFO "Fib Context not found\n"));
return -EINVAL;
}
if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
(fibctx->size != sizeof(struct aac_fib_context))) {
spin_unlock_irqrestore(&dev->fib_lock, flags);
dprintk ((KERN_INFO "Fib Context corrupt?\n"));
return -EINVAL;
}
status = 0;
/*
* If there are no fibs to send back, then either wait or return
* -EAGAIN
*/
return_fib:
if (!list_empty(&fibctx->fib_list)) {
/*
* Pull the next fib from the fibs
*/
entry = fibctx->fib_list.next;
list_del(entry);
fib = list_entry(entry, struct fib, fiblink);
fibctx->count--;
spin_unlock_irqrestore(&dev->fib_lock, flags);
if (copy_to_user(f.fib, fib->hw_fib_va, sizeof(struct hw_fib))) {
kfree(fib->hw_fib_va);
kfree(fib);
return -EFAULT;
}
/*
* Free the space occupied by this copy of the fib.
*/
kfree(fib->hw_fib_va);
kfree(fib);
status = 0;
} else {
spin_unlock_irqrestore(&dev->fib_lock, flags);
/* If someone killed the AIF aacraid thread, restart it */
status = !dev->aif_thread;
if (status && !dev->in_reset && dev->queues && dev->fsa_dev) {
/* Be paranoid, be very paranoid! */
kthread_stop(dev->thread);
ssleep(1);
dev->aif_thread = 0;
dev->thread = kthread_run(aac_command_thread, dev,
"%s", dev->name);
ssleep(1);
}
if (f.wait) {
if(down_interruptible(&fibctx->wait_sem) < 0) {
status = -ERESTARTSYS;
} else {
/* Lock again and retry */
spin_lock_irqsave(&dev->fib_lock, flags);
goto return_fib;
}
} else {
status = -EAGAIN;
}
}
fibctx->jiffies = jiffies/HZ;
return status;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alan Cox | 319 | 67.73% | 2 | 18.18% |
| Mark Haverkamp | 118 | 25.05% | 5 | 45.45% |
| Mark Salyzyn | 30 | 6.37% | 1 | 9.09% |
| Kees Cook | 2 | 0.42% | 1 | 9.09% |
| Penchala Narasimha Reddy Chilakala, ERS-HCLTech | 1 | 0.21% | 1 | 9.09% |
| Al Viro | 1 | 0.21% | 1 | 9.09% |
| Total | 471 | 100.00% | 11 | 100.00% |
int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
{
struct fib *fib;
/*
* First free any FIBs that have not been consumed.
*/
while (!list_empty(&fibctx->fib_list)) {
struct list_head * entry;
/*
* Pull the next fib from the fibs
*/
entry = fibctx->fib_list.next;
list_del(entry);
fib = list_entry(entry, struct fib, fiblink);
fibctx->count--;
/*
* Free the space occupied by this copy of the fib.
*/
kfree(fib->hw_fib_va);
kfree(fib);
}
/*
* Remove the Context from the AdapterFibContext List
*/
list_del(&fibctx->next);
/*
* Invalidate context
*/
fibctx->type = 0;
/*
* Free the space occupied by the Context
*/
kfree(fibctx);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alan Cox | 107 | 99.07% | 2 | 66.67% |
| Mark Haverkamp | 1 | 0.93% | 1 | 33.33% |
| Total | 108 | 100.00% | 3 | 100.00% |
/**
* close_getadapter_fib - close down user fib context
* @dev: adapter
* @arg: ioctl arguments
*
* This routine will close down the fibctx passed in from the user.
*/
static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
{
struct aac_fib_context *fibctx;
int status;
unsigned long flags;
struct list_head * entry;
/*
* Verify that the HANDLE passed in was a valid AdapterFibContext
*
* Search the list of AdapterFibContext addresses on the adapter
* to be sure this is a valid address
*/
entry = dev->fib_list.next;
fibctx = NULL;
while(entry != &dev->fib_list) {
fibctx = list_entry(entry, struct aac_fib_context, next);
/*
* Extract the fibctx from the input parameters
*/
if (fibctx->unique == (u32)(uintptr_t)arg) /* We found a winner */
break;
entry = entry->next;
fibctx = NULL;
}
if (!fibctx)
return 0; /* Already gone */
if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
(fibctx->size != sizeof(struct aac_fib_context)))
return -EINVAL;
spin_lock_irqsave(&dev->fib_lock, flags);
status = aac_close_fib_context(dev, fibctx);
spin_unlock_irqrestore(&dev->fib_lock, flags);
return status;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alan Cox | 141 | 86.50% | 1 | 25.00% |
| Mark Haverkamp | 20 | 12.27% | 1 | 25.00% |
| Al Viro | 2 | 1.23% | 2 | 50.00% |
| Total | 163 | 100.00% | 4 | 100.00% |
/**
* check_revision - close down user fib context
* @dev: adapter
* @arg: ioctl arguments
*
* This routine returns the driver version.
* Under Linux, there have been no version incompatibilities, so this is
* simple!
*/
static int check_revision(struct aac_dev *dev, void __user *arg)
{
struct revision response;
char *driver_version = aac_driver_version;
u32 version;
response.compat = 1;
version = (simple_strtol(driver_version,
&driver_version, 10) << 24) | 0x00000400;
version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
version += simple_strtol(driver_version + 1, NULL, 10);
response.version = cpu_to_le32(version);
# ifdef AAC_DRIVER_BUILD
response.build = cpu_to_le32(AAC_DRIVER_BUILD);
# else
response.build = cpu_to_le32(9999);
# endif
if (copy_to_user(arg, &response, sizeof(response)))
return -EFAULT;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark Haverkamp | 77 | 55.80% | 2 | 40.00% |
| Alan Cox | 58 | 42.03% | 1 | 20.00% |
| Mark Salyzyn | 2 | 1.45% | 1 | 20.00% |
| Al Viro | 1 | 0.72% | 1 | 20.00% |
| Total | 138 | 100.00% | 5 | 100.00% |
/**
*
* aac_send_raw_scb
*
*/
static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
{
struct fib* srbfib;
int status;
struct aac_srb *srbcmd = NULL;
struct aac_hba_cmd_req *hbacmd = NULL;
struct user_aac_srb *user_srbcmd = NULL;
struct user_aac_srb __user *user_srb = arg;
struct aac_srb_reply __user *user_reply;
u32 chn;
u32 fibsize = 0;
u32 flags = 0;
s32 rcode = 0;
u32 data_dir;
void __user *sg_user[HBA_MAX_SG_EMBEDDED];
void *sg_list[HBA_MAX_SG_EMBEDDED];
u32 sg_count[HBA_MAX_SG_EMBEDDED];
u32 sg_indx = 0;
u32 byte_count = 0;
u32 actual_fibsize64, actual_fibsize = 0;
int i;
int is_native_device;
u64 address;
if (dev->in_reset) {
dprintk((KERN_DEBUG"aacraid: send raw srb -EBUSY\n"));
return -EBUSY;
}
if (!capable(CAP_SYS_ADMIN)){
dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
return -EPERM;
}
/*
* Allocate and initialize a Fib then setup a SRB command
*/
if (!(srbfib = aac_fib_alloc(dev))) {
return -ENOMEM;
}
memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */
if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){
dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n"));
rcode = -EFAULT;
goto cleanup;
}
if ((fibsize < (sizeof(struct user_aac_srb) - sizeof(struct user_sgentry))) ||
(fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr)))) {
rcode = -EINVAL;
goto cleanup;
}
user_srbcmd = kmalloc(fibsize, GFP_KERNEL);
if (!user_srbcmd) {
dprintk((KERN_DEBUG"aacraid: Could not make a copy of the srb\n"));
rcode = -ENOMEM;
goto cleanup;
}
if(copy_from_user(user_srbcmd, user_srb,fibsize)){
dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n"));
rcode = -EFAULT;
goto cleanup;
}
flags = user_srbcmd->flags; /* from user in cpu order */
switch (flags & (SRB_DataIn | SRB_DataOut)) {
case SRB_DataOut:
data_dir = DMA_TO_DEVICE;
break;
case (SRB_DataIn | SRB_DataOut):
data_dir = DMA_BIDIRECTIONAL;
break;
case SRB_DataIn:
data_dir = DMA_FROM_DEVICE;
break;
default:
data_dir = DMA_NONE;
}
if (user_srbcmd->sg.count > ARRAY_SIZE(sg_list)) {
dprintk((KERN_DEBUG"aacraid: too many sg entries %d\n",
user_srbcmd->sg.count));
rcode = -EINVAL;
goto cleanup;
}
if ((data_dir == DMA_NONE) && user_srbcmd->sg.count) {
dprintk((KERN_DEBUG"aacraid:SG with no direction specified\n"));
rcode = -EINVAL;
goto cleanup;
}
actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) +
((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry));
actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) *
(sizeof(struct sgentry64) - sizeof(struct sgentry));
/* User made a mistake - should not continue */
if ((actual_fibsize != fibsize) && (actual_fibsize64 != fibsize)) {
dprintk((KERN_DEBUG"aacraid: Bad Size specified in "
"Raw SRB command calculated fibsize=%lu;%lu "
"user_srbcmd->sg.count=%d aac_srb=%lu sgentry=%lu;%lu "
"issued fibsize=%d\n",
actual_fibsize, actual_fibsize64, user_srbcmd->sg.count,
sizeof(struct aac_srb), sizeof(struct sgentry),
sizeof(struct sgentry64), fibsize));
rcode = -EINVAL;
goto cleanup;
}
chn = user_srbcmd->channel;
if (chn < AAC_MAX_BUSES && user_srbcmd->id < AAC_MAX_TARGETS &&
dev->hba_map[chn][user_srbcmd->id].devtype ==
AAC_DEVTYPE_NATIVE_RAW) {
is_native_device = 1;
hbacmd = (struct aac_hba_cmd_req *)srbfib->hw_fib_va;
memset(hbacmd, 0, 96); /* sizeof(*hbacmd) is not necessary */
/* iu_type is a parameter of aac_hba_send */
switch (data_dir) {
case DMA_TO_DEVICE:
hbacmd->byte1 = 2;
break;
case DMA_FROM_DEVICE:
case DMA_BIDIRECTIONAL:
hbacmd->byte1 = 1;
break;
case DMA_NONE:
default:
break;
}
hbacmd->lun[1] = cpu_to_le32(user_srbcmd->lun);
hbacmd->it_nexus = dev->hba_map[chn][user_srbcmd->id].rmw_nexus;
/*
* we fill in reply_qid later in aac_src_deliver_message
* we fill in iu_type, request_id later in aac_hba_send
* we fill in emb_data_desc_count, data_length later
* in sg list build
*/
memcpy(hbacmd->cdb, user_srbcmd->cdb, sizeof(hbacmd->cdb));
address = (u64)srbfib->hw_error_pa;
hbacmd->error_ptr_hi = cpu_to_le32((u32)(address >> 32));
hbacmd->error_ptr_lo = cpu_to_le32((u32)(address & 0xffffffff));
hbacmd->error_length = cpu_to_le32(FW_ERROR_BUFFER_SIZE);
hbacmd->emb_data_desc_count =
cpu_to_le32(user_srbcmd->sg.count);
srbfib->hbacmd_size = 64 +
user_srbcmd->sg.count * sizeof(struct aac_hba_sgl);
} else {
is_native_device = 0;
aac_fib_init(srbfib);
/* raw_srb FIB is not FastResponseCapable */
srbfib->hw_fib_va->header.XferState &=
~cpu_to_le32(FastResponseCapable);
srbcmd = (struct aac_srb *) fib_data(srbfib);
// Fix up srb for endian and force some values
srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); // Force this
srbcmd->channel = cpu_to_le32(user_srbcmd->channel);
srbcmd->id = cpu_to_le32(user_srbcmd->id);
srbcmd->lun = cpu_to_le32(user_srbcmd->lun);
srbcmd->timeout = cpu_to_le32(user_srbcmd->timeout);
srbcmd->flags = cpu_to_le32(flags);
srbcmd->retry_limit = 0; // Obsolete parameter
srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size);
memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb));
}
byte_count = 0;
if (is_native_device) {
struct user_sgmap *usg32 = &user_srbcmd->sg;
struct user_sgmap64 *usg64 =
(struct user_sgmap64 *)&user_srbcmd->sg;
for (i = 0; i < usg32->count; i++) {
void *p;
u64 addr;
sg_count[i] = (actual_fibsize64 == fibsize) ?
usg64->sg[i].count : usg32->sg[i].count;
if (sg_count[i] >
(dev->scsi_host_ptr->max_sectors << 9)) {
pr_err("aacraid: upsg->sg[%d].count=%u>%u\n",
i, sg_count[i],
dev->scsi_host_ptr->max_sectors << 9);
rcode = -EINVAL;
goto cleanup;
}
p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
if (!p) {
rcode = -ENOMEM;
goto cleanup;
}
if (actual_fibsize64 == fibsize) {
addr = (u64)usg64->sg[i].addr[0];
addr += ((u64)usg64->sg[i].addr[1]) << 32;
} else {
addr = (u64)usg32->sg[i].addr;
}
sg_user[i] = (void __user *)(uintptr_t)addr;
sg_list[i] = p; // save so we can clean up later
sg_indx = i;
if (flags & SRB_DataOut) {
if (copy_from_user(p, sg_user[i],
sg_count[i])) {
rcode = -EFAULT;
goto cleanup;
}
}
addr = pci_map_single(dev->pdev, p, sg_count[i],
data_dir);
hbacmd->sge[i].addr_hi = cpu_to_le32((u32)(addr>>32));
hbacmd->sge[i].addr_lo = cpu_to_le32(
(u32)(addr & 0xffffffff));
hbacmd->sge[i].len = cpu_to_le32(sg_count[i]);
hbacmd->sge[i].flags = 0;
byte_count += sg_count[i];
}
if (usg32->count > 0) /* embedded sglist */
hbacmd->sge[usg32->count-1].flags =
cpu_to_le32(0x40000000);
hbacmd->data_length = cpu_to_le32(byte_count);
status = aac_hba_send(HBA_IU_TYPE_SCSI_CMD_REQ, srbfib,
NULL, NULL);
} else if (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64) {
struct user_sgmap64* upsg = (struct user_sgmap64*)&user_srbcmd->sg;
struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg;
/*
* This should also catch if user used the 32 bit sgmap
*/
if (actual_fibsize64 == fibsize) {
actual_fibsize = actual_fibsize64;
for (i = 0; i < upsg->count; i++) {
u64 addr;
void* p;
sg_count[i] = upsg->sg[i].count;
if (sg_count[i] >
((dev->adapter_info.options &
AAC_OPT_NEW_COMM) ?
(dev->scsi_host_ptr->max_sectors << 9) :
65536)) {
rcode = -EINVAL;
goto cleanup;
}
/* Does this really need to be GFP_DMA? */
p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
if(!p) {
dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
sg_count[i], i, upsg->count));
rcode = -ENOMEM;
goto cleanup;
}
addr = (u64)upsg->sg[i].addr[0];
addr += ((u64)upsg->sg[i].addr[1]) << 32;
sg_user[i] = (void __user *)(uintptr_t)addr;
sg_list[i] = p; // save so we can clean up later
sg_indx = i;
if (flags & SRB_DataOut) {
if (copy_from_user(p, sg_user[i],
sg_count[i])){
dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
rcode = -EFAULT;
goto cleanup;
}
}
addr = pci_map_single(dev->pdev, p,
sg_count[i], data_dir);
psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
byte_count += sg_count[i];
psg->sg[i].count = cpu_to_le32(sg_count[i]);
}
} else {
struct user_sgmap* usg;
usg = kmemdup(upsg,
actual_fibsize - sizeof(struct aac_srb)
+ sizeof(struct sgmap), GFP_KERNEL);
if (!usg) {
dprintk((KERN_DEBUG"aacraid: Allocation error in Raw SRB command\n"));
rcode = -ENOMEM;
goto cleanup;
}
actual_fibsize = actual_fibsize64;
for (i = 0; i < usg->count; i++) {
u64 addr;
void* p;
sg_count[i] = usg->sg[i].count;
if (sg_count[i] >
((dev->adapter_info.options &
AAC_OPT_NEW_COMM) ?
(dev->scsi_host_ptr->max_sectors << 9) :
65536)) {
kfree(usg);
rcode = -EINVAL;
goto cleanup;
}
/* Does this really need to be GFP_DMA? */
p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
if(!p) {
dprintk((KERN_DEBUG "aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
sg_count[i], i, usg->count));
kfree(usg);
rcode = -ENOMEM;
goto cleanup;
}
sg_user[i] = (void __user *)(uintptr_t)usg->sg[i].addr;
sg_list[i] = p; // save so we can clean up later
sg_indx = i;
if (flags & SRB_DataOut) {
if (copy_from_user(p, sg_user[i],
sg_count[i])) {
kfree (usg);
dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
rcode = -EFAULT;
goto cleanup;
}
}
addr = pci_map_single(dev->pdev, p,
sg_count[i], data_dir);
psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
byte_count += sg_count[i];
psg->sg[i].count = cpu_to_le32(sg_count[i]);
}
kfree (usg);
}
srbcmd->count = cpu_to_le32(byte_count);
if (user_srbcmd->sg.count)
psg->count = cpu_to_le32(sg_indx+1);
else
psg->count = 0;
status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL);
} else {
struct user_sgmap* upsg = &user_srbcmd->sg;
struct sgmap* psg = &srbcmd->sg;
if (actual_fibsize64 == fibsize) {
struct user_sgmap64* usg = (struct user_sgmap64 *)upsg;
for (i = 0; i < upsg->count; i++) {
uintptr_t addr;
void* p;
sg_count[i] = usg->sg[i].count;
if (sg_count[i] >
((dev->adapter_info.options &
AAC_OPT_NEW_COMM) ?
(dev->scsi_host_ptr->max_sectors << 9) :
65536)) {
rcode = -EINVAL;
goto cleanup;
}
/* Does this really need to be GFP_DMA? */
p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
if (!p) {
dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
sg_count[i], i, usg->count));
rcode = -ENOMEM;
goto cleanup;
}
addr = (u64)usg->sg[i].addr[0];
addr += ((u64)usg->sg[i].addr[1]) << 32;
sg_user[i] = (void __user *)addr;
sg_list[i] = p; // save so we can clean up later
sg_indx = i;
if (flags & SRB_DataOut) {
if (copy_from_user(p, sg_user[i],
sg_count[i])){
dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
rcode = -EFAULT;
goto cleanup;
}
}
addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
psg->sg[i].addr = cpu_to_le32(addr & 0xffffffff);
byte_count += usg->sg[i].count;
psg->sg[i].count = cpu_to_le32(sg_count[i]);
}
} else {
for (i = 0; i < upsg->count; i++) {
dma_addr_t addr;
void* p;
sg_count[i] = upsg->sg[i].count;
if (sg_count[i] >
((dev->adapter_info.options &
AAC_OPT_NEW_COMM) ?
(dev->scsi_host_ptr->max_sectors << 9) :
65536)) {
rcode = -EINVAL;
goto cleanup;
}
p = kmalloc(sg_count[i], GFP_KERNEL);
if (!p) {
dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
sg_count[i], i, upsg->count));
rcode = -ENOMEM;
goto cleanup;
}
sg_user[i] = (void __user *)(uintptr_t)upsg->sg[i].addr;
sg_list[i] = p; // save so we can clean up later
sg_indx = i;
if (flags & SRB_DataOut) {
if (copy_from_user(p, sg_user[i],
sg_count[i])) {
dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
rcode = -EFAULT;
goto cleanup;
}
}
addr = pci_map_single(dev->pdev, p,
sg_count[i], data_dir);
psg->sg[i].addr = cpu_to_le32(addr);
byte_count += sg_count[i];
psg->sg[i].count = cpu_to_le32(sg_count[i]);
}
}
srbcmd->count = cpu_to_le32(byte_count);
if (user_srbcmd->sg.count)
psg->count = cpu_to_le32(sg_indx+1);
else
psg->count = 0;
status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL);
}
if (status == -ERESTARTSYS) {
rcode = -ERESTARTSYS;
goto cleanup;
}
if (status != 0) {
dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"));
rcode = -ENXIO;
goto cleanup;
}
if (flags & SRB_DataIn) {
for(i = 0 ; i <= sg_indx; i++){
if (copy_to_user(sg_user[i], sg_list[i], sg_count[i])) {
dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n"));
rcode = -EFAULT;
goto cleanup;
}
}
}
user_reply = arg + fibsize;
if (is_native_device) {
struct aac_hba_resp *err =
&((struct aac_native_hba *)srbfib->hw_fib_va)->resp.err;
struct aac_srb_reply reply;
reply.status = ST_OK;
if (srbfib->flags & FIB_CONTEXT_FLAG_FASTRESP) {
/* fast response */
reply.srb_status = SRB_STATUS_SUCCESS;
reply.scsi_status = 0;
reply.data_xfer_length = byte_count;
} else {
reply.srb_status = err->service_response;
reply.scsi_status = err->status;
reply.data_xfer_length = byte_count -
le32_to_cpu(err->residual_count);
reply.sense_data_size = err->sense_response_data_len;
memcpy(reply.sense_data, err->sense_response_buf,
AAC_SENSE_BUFFERSIZE);
}
if (copy_to_user(user_reply, &reply,
sizeof(struct aac_srb_reply))) {
dprintk((KERN_DEBUG"aacraid: Copy to user failed\n"));
rcode = -EFAULT;
goto cleanup;
}
} else {
struct aac_srb_reply *reply;
reply = (struct aac_srb_reply *) fib_data(srbfib);
if (copy_to_user(user_reply, reply,
sizeof(struct aac_srb_reply))) {
dprintk((KERN_DEBUG"aacraid: Copy to user failed\n"));
rcode = -EFAULT;
goto cleanup;
}
}
cleanup:
kfree(user_srbcmd);
if (rcode != -ERESTARTSYS) {
for (i = 0; i <= sg_indx; i++)
kfree(sg_list[i]);
aac_fib_complete(srbfib);
aac_fib_free(srbfib);
}
return rcode;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Raghava Aditya Renukunta | 1152 | 35.94% | 1 | 3.85% |
| Mark Haverkamp | 1036 | 32.32% | 9 | 34.62% |
| James Bottomley | 706 | 22.03% | 1 | 3.85% |
| Mark Salyzyn | 166 | 5.18% | 2 | 7.69% |
| Mahesh Rajashekhara | 50 | 1.56% | 2 | 7.69% |
| Alan Cox | 40 | 1.25% | 1 | 3.85% |
| Al Viro | 24 | 0.75% | 2 | 7.69% |
| Penchala Narasimha Reddy Chilakala, ERS-HCLTech | 10 | 0.31% | 1 | 3.85% |
| Jesper Juhl | 5 | 0.16% | 1 | 3.85% |
| Julia Lawall | 5 | 0.16% | 1 | 3.85% |
| Christoph Hellwig | 4 | 0.12% | 1 | 3.85% |
| Muhammad Falak R Wani | 3 | 0.09% | 1 | 3.85% |
| Dave Jones | 2 | 0.06% | 1 | 3.85% |
| Tobias Klauser | 1 | 0.03% | 1 | 3.85% |
| Adrian Bunk | 1 | 0.03% | 1 | 3.85% |
| Total | 3205 | 100.00% | 26 | 100.00% |
struct aac_pci_info {
u32 bus;
u32 slot;
};
static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
{
struct aac_pci_info pci_info;
pci_info.bus = dev->pdev->bus->number;
pci_info.slot = PCI_SLOT(dev->pdev->devfn);
if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
return -EFAULT;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Bottomley | 73 | 93.59% | 1 | 25.00% |
| Mark Haverkamp | 3 | 3.85% | 1 | 25.00% |
| Al Viro | 1 | 1.28% | 1 | 25.00% |
| Adrian Bunk | 1 | 1.28% | 1 | 25.00% |
| Total | 78 | 100.00% | 4 | 100.00% |
static int aac_get_hba_info(struct aac_dev *dev, void __user *arg)
{
struct aac_hba_info hbainfo;
hbainfo.adapter_number = (u8) dev->id;
hbainfo.system_io_bus_number = dev->pdev->bus->number;
hbainfo.device_number = (dev->pdev->devfn >> 3);
hbainfo.function_number = (dev->pdev->devfn & 0x0007);
hbainfo.vendor_id = dev->pdev->vendor;
hbainfo.device_id = dev->pdev->device;
hbainfo.sub_vendor_id = dev->pdev->subsystem_vendor;
hbainfo.sub_system_id = dev->pdev->subsystem_device;
if (copy_to_user(arg, &hbainfo, sizeof(struct aac_hba_info))) {
dprintk((KERN_DEBUG "aacraid: Could not copy hba info\n"));
return -EFAULT;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Raghava Aditya Renukunta | 144 | 100.00% | 1 | 100.00% |
| Total | 144 | 100.00% | 1 | 100.00% |
struct aac_reset_iop {
u8 reset_type;
};
static int aac_send_reset_adapter(struct aac_dev *dev, void __user *arg)
{
struct aac_reset_iop reset;
int retval;
if (copy_from_user((void *)&reset, arg, sizeof(struct aac_reset_iop)))
return -EFAULT;
retval = aac_reset_adapter(dev, 0, reset.reset_type);
return retval;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Raghava Aditya Renukunta | 63 | 100.00% | 1 | 100.00% |
| Total | 63 | 100.00% | 1 | 100.00% |
int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
{
int status;
mutex_lock(&dev->ioctl_mutex);
if (dev->adapter_shutdown) {
status = -EACCES;
goto cleanup;
}
/*
* HBA gets first crack
*/
status = aac_dev_ioctl(dev, cmd, arg);
if (status != -ENOTTY)
goto cleanup;
switch (cmd) {
case FSACTL_MINIPORT_REV_CHECK:
status = check_revision(dev, arg);
break;
case FSACTL_SEND_LARGE_FIB:
case FSACTL_SENDFIB:
status = ioctl_send_fib(dev, arg);
break;
case FSACTL_OPEN_GET_ADAPTER_FIB:
status = open_getadapter_fib(dev, arg);
break;
case FSACTL_GET_NEXT_ADAPTER_FIB:
status = next_getadapter_fib(dev, arg);
break;
case FSACTL_CLOSE_GET_ADAPTER_FIB:
status = close_getadapter_fib(dev, arg);
break;
case FSACTL_SEND_RAW_SRB:
status = aac_send_raw_srb(dev,arg);
break;
case FSACTL_GET_PCI_INFO:
status = aac_get_pci_info(dev,arg);
break;
case FSACTL_GET_HBA_INFO:
status = aac_get_hba_info(dev, arg);
break;
case FSACTL_RESET_IOP:
status = aac_send_reset_adapter(dev, arg);
break;
default:
status = -ENOTTY;
break;
}
cleanup:
mutex_unlock(&dev->ioctl_mutex);
return status;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Bottomley | 86 | 40.38% | 1 | 12.50% |
| Raghava Aditya Renukunta | 63 | 29.58% | 4 | 50.00% |
| Alan Cox | 60 | 28.17% | 1 | 12.50% |
| Mark Haverkamp | 3 | 1.41% | 1 | 12.50% |
| Al Viro | 1 | 0.47% | 1 | 12.50% |
| Total | 213 | 100.00% | 8 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mark Haverkamp | 1599 | 29.29% | 16 | 34.04% |
| Raghava Aditya Renukunta | 1431 | 26.21% | 6 | 12.77% |
| Alan Cox | 1136 | 20.81% | 2 | 4.26% |
| James Bottomley | 877 | 16.07% | 1 | 2.13% |
| Mark Salyzyn | 206 | 3.77% | 4 | 8.51% |
| Mahesh Rajashekhara | 50 | 0.92% | 2 | 4.26% |
| Dave Carroll | 50 | 0.92% | 1 | 2.13% |
| FUJITA Tomonori | 35 | 0.64% | 1 | 2.13% |
| Al Viro | 32 | 0.59% | 2 | 4.26% |
| Penchala Narasimha Reddy Chilakala, ERS-HCLTech | 12 | 0.22% | 1 | 2.13% |
| Christoph Hellwig | 6 | 0.11% | 1 | 2.13% |
| Jesper Juhl | 5 | 0.09% | 1 | 2.13% |
| Julia Lawall | 5 | 0.09% | 1 | 2.13% |
| Muhammad Falak R Wani | 3 | 0.05% | 1 | 2.13% |
| Thomas Gleixner | 3 | 0.05% | 1 | 2.13% |
| Adrian Bunk | 2 | 0.04% | 1 | 2.13% |
| Kees Cook | 2 | 0.04% | 1 | 2.13% |
| Dave Jones | 2 | 0.04% | 1 | 2.13% |
| Tobias Klauser | 1 | 0.02% | 1 | 2.13% |
| Matthew Wilcox | 1 | 0.02% | 1 | 2.13% |
| Linus Torvalds | 1 | 0.02% | 1 | 2.13% |
| Total | 5459 | 100.00% | 47 | 100.00% |
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