Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
[sfrench/cifs-2.6.git] / drivers / scsi / aacraid / commctrl.c
index 72b0393b459675a0fbb9cc6c4ba0e1df07104183..5fd83deab36ca6f1bf0834c83e4714fae63b124a 100644 (file)
@@ -39,7 +39,7 @@
 #include <linux/blkdev.h>
 #include <linux/delay.h> /* ssleep prototype */
 #include <linux/kthread.h>
-#include <asm/semaphore.h>
+#include <linux/semaphore.h>
 #include <asm/uaccess.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;
@@ -71,7 +71,7 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
        if(fibptr == NULL) {
                return -ENOMEM;
        }
-               
+
        kfib = fibptr->hw_fib_va;
        /*
         *      First copy in the header so that we can check the size field.
@@ -109,7 +109,7 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
        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 
+                * Since we didn't really send a fib, zero out the state to allow
                 * cleanup code not to assert.
                 */
                kfib->header.XferState = 0;
@@ -169,7 +169,7 @@ static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
 
                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
@@ -189,7 +189,7 @@ static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
                INIT_LIST_HEAD(&fibctx->fib_list);
                fibctx->jiffies = jiffies/HZ;
                /*
-                *      Now add this context onto the adapter's 
+                *      Now add this context onto the adapter's
                 *      AdapterFibContext list.
                 */
                spin_lock_irqsave(&dev->fib_lock, flags);
@@ -207,12 +207,12 @@ static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
                }
                list_add_tail(&fibctx->next, &dev->fib_list);
                spin_unlock_irqrestore(&dev->fib_lock, flags);
-               if (copy_to_user(arg,  &fibctx->unique, 
+               if (copy_to_user(arg, &fibctx->unique,
                                                sizeof(fibctx->unique))) {
                        status = -EFAULT;
                } else {
                        status = 0;
-               }       
+               }
        }
        return status;
 }
@@ -221,8 +221,8 @@ static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
  *     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
+ *
+ *     This routine will get the next Fib, if available, from the AdapterFibContext
  *     passed in from the user.
  */
 
@@ -234,7 +234,7 @@ static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
        int status;
        struct list_head * entry;
        unsigned long flags;
-       
+
        if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl)))
                return -EFAULT;
        /*
@@ -243,6 +243,7 @@ static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
         *      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;
 
@@ -251,37 +252,37 @@ static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
                /*
                 *      Extract the AdapterFibContext from the Input parameters.
                 */
-               if (fibctx->unique == f.fibctx) {   /* We found a winner */
+               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;
-       spin_lock_irqsave(&dev->fib_lock, flags);
        /*
         *      If there are no fibs to send back, then either wait or return
         *      -EAGAIN
         */
 return_fib:
        if (!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--;
                spin_unlock_irqrestore(&dev->fib_lock, flags);
@@ -289,7 +290,7 @@ return_fib:
                        kfree(fib->hw_fib_va);
                        kfree(fib);
                        return -EFAULT;
-               }       
+               }
                /*
                 *      Free the space occupied by this copy of the fib.
                 */
@@ -318,7 +319,7 @@ return_fib:
                        }
                } else {
                        status = -EAGAIN;
-               }       
+               }
        }
        fibctx->jiffies = jiffies/HZ;
        return status;
@@ -368,7 +369,7 @@ int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
  *
  *     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;
@@ -391,7 +392,7 @@ static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
                /*
                 *      Extract the fibctx from the input parameters
                 */
-               if (fibctx->unique == (u32)(ptrdiff_t)arg) /* We found a winner */
+               if (fibctx->unique == (u32)(uintptr_t)arg) /* We found a winner */
                        break;
                entry = entry->next;
                fibctx = NULL;
@@ -415,8 +416,8 @@ static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
  *     @arg: ioctl arguments
  *
  *     This routine returns the driver version.
- *      Under Linux, there have been no version incompatibilities, so this is 
- *      simple!
+ *     Under Linux, there have been no version incompatibilities, so this is
+ *     simple!
  */
 
 static int check_revision(struct aac_dev *dev, void __user *arg)
@@ -426,12 +427,12 @@ static int check_revision(struct aac_dev *dev, void __user *arg)
        u32 version;
 
        response.compat = 1;
-       version = (simple_strtol(driver_version, 
+       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);
-#      if (defined(AAC_DRIVER_BUILD))
+#      ifdef AAC_DRIVER_BUILD
                response.build = cpu_to_le32(AAC_DRIVER_BUILD);
 #      else
                response.build = cpu_to_le32(9999);
@@ -464,7 +465,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
        u32 data_dir;
        void __user *sg_user[32];
        void *sg_list[32];
-       u32   sg_indx = 0;
+       u32 sg_indx = 0;
        u32 byte_count = 0;
        u32 actual_fibsize64, actual_fibsize = 0;
        int i;
@@ -475,7 +476,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                return -EBUSY;
        }
        if (!capable(CAP_SYS_ADMIN)){
-               dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n")); 
+               dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
                return -EPERM;
        }
        /*
@@ -490,7 +491,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 
        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")); 
+               dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n"));
                rcode = -EFAULT;
                goto cleanup;
        }
@@ -507,7 +508,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                goto cleanup;
        }
        if(copy_from_user(user_srbcmd, user_srb,fibsize)){
-               dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n")); 
+               dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n"));
                rcode = -EFAULT;
                goto cleanup;
        }
@@ -518,15 +519,15 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
        // 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->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->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));
-       
+
        switch (flags & (SRB_DataIn | SRB_DataOut)) {
        case SRB_DataOut:
                data_dir = DMA_TO_DEVICE;
@@ -582,7 +583,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                void* p;
                                /* Does this really need to be GFP_DMA? */
                                p = kmalloc(upsg->sg[i].count,GFP_KERNEL|__GFP_DMA);
-                               if(p == 0) {
+                               if(!p) {
                                        dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
                                          upsg->sg[i].count,i,upsg->count));
                                        rcode = -ENOMEM;
@@ -590,11 +591,11 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                }
                                addr = (u64)upsg->sg[i].addr[0];
                                addr += ((u64)upsg->sg[i].addr[1]) << 32;
-                               sg_user[i] = (void __user *)(ptrdiff_t)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 (flags & SRB_DataOut) {
                                        if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
                                                dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
                                                rcode = -EFAULT;
@@ -626,18 +627,18 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                void* p;
                                /* Does this really need to be GFP_DMA? */
                                p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
-                               if(p == 0) {
+                               if(!p) {
                                        kfree (usg);
                                        dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
                                          usg->sg[i].count,i,usg->count));
                                        rcode = -ENOMEM;
                                        goto cleanup;
                                }
-                               sg_user[i] = (void __user *)(ptrdiff_t)usg->sg[i].addr;
+                               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 (flags & SRB_DataOut) {
                                        if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
                                                kfree (usg);
                                                dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
@@ -664,11 +665,11 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                if (actual_fibsize64 == fibsize) {
                        struct user_sgmap64* usg = (struct user_sgmap64 *)upsg;
                        for (i = 0; i < upsg->count; i++) {
-                               u64 addr;
+                               uintptr_t addr;
                                void* p;
                                /* Does this really need to be GFP_DMA? */
                                p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
-                               if(p == 0) {
+                               if(!p) {
                                        dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
                                          usg->sg[i].count,i,usg->count));
                                        rcode = -ENOMEM;
@@ -676,11 +677,11 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                }
                                addr = (u64)usg->sg[i].addr[0];
                                addr += ((u64)usg->sg[i].addr[1]) << 32;
-                               sg_user[i] = (void __user *)(ptrdiff_t)addr;
+                               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 (flags & SRB_DataOut) {
                                        if(copy_from_user(p,sg_user[i],usg->sg[i].count)){
                                                dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
                                                rcode = -EFAULT;
@@ -698,17 +699,17 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
                                dma_addr_t addr;
                                void* p;
                                p = kmalloc(upsg->sg[i].count, GFP_KERNEL);
-                               if(p == 0) {
+                               if (!p) {
                                        dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
                                          upsg->sg[i].count, i, upsg->count));
                                        rcode = -ENOMEM;
                                        goto cleanup;
                                }
-                               sg_user[i] = (void __user *)(ptrdiff_t)upsg->sg[i].addr;
+                               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 (flags & SRB_DataOut) {
                                        if(copy_from_user(p, sg_user[i],
                                                        upsg->sg[i].count)) {
                                                dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
@@ -734,19 +735,19 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
        }
 
        if (status != 0){
-               dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n")); 
+               dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"));
                rcode = -ENXIO;
                goto cleanup;
        }
 
-       if( flags & SRB_DataIn ) {
+       if (flags & SRB_DataIn) {
                for(i = 0 ; i <= sg_indx; i++){
                        byte_count = le32_to_cpu(
                          (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64)
                              ? ((struct sgmap64*)&srbcmd->sg)->sg[i].count
                              : srbcmd->sg.sg[i].count);
                        if(copy_to_user(sg_user[i], sg_list[i], byte_count)){
-                               dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n")); 
+                               dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n"));
                                rcode = -EFAULT;
                                goto cleanup;
 
@@ -756,7 +757,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 
        reply = (struct aac_srb_reply *) fib_data(srbfib);
        if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){
-               dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n")); 
+               dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n"));
                rcode = -EFAULT;
                goto cleanup;
        }
@@ -775,34 +776,34 @@ cleanup:
 }
 
 struct aac_pci_info {
-        u32 bus;
-        u32 slot;
+       u32 bus;
+       u32 slot;
 };
 
 
 static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
 {
-        struct aac_pci_info pci_info;
+       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;
+       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;
+       return 0;
 }
+
 
 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
 {
        int status;
-       
+
        /*
         *      HBA gets first crack
         */
-        
+
        status = aac_dev_ioctl(dev, cmd, arg);
        if(status != -ENOTTY)
                return status;
@@ -832,7 +833,7 @@ int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
                break;
        default:
                status = -ENOTTY;
-               break;  
+               break;
        }
        return status;
 }