remove struct pci_dev from scsi

This patch completely removes struct pci_dev from scsi and replaces it with struct device
(actually as host_driverfs_dev.parent)

The old (but now deprecated) scsi_pci primitives are left in.  These should be replaced
by using the new scsi_device primitives.

drivers/scsi/hosts.h

@@ -467,12 +467,6 @@ struct Scsi_Host
      */
     unsigned int max_host_blocked;
 
-    /*
-     * For SCSI hosts which are PCI devices, set pci_dev so that
-     * we can do BIOS EDD 3.0 mappings
-     */
-    struct pci_dev *pci_dev;
-
     /* 
      * Support for driverfs filesystem
      */
@@ -517,11 +511,16 @@ static inline void scsi_assign_lock(struct Scsi_Host *shost, spinlock_t *lock)
 	shost->host_lock = lock;
 }
 
+static inline void scsi_set_device(struct Scsi_Host *shost,
+                                   struct device *dev)
+{
+        shost->host_driverfs_dev.parent = dev;
+}
+
 static inline void scsi_set_pci_device(struct Scsi_Host *shost,
                                        struct pci_dev *pdev)
 {
-	shost->pci_dev = pdev;
-	shost->host_driverfs_dev.parent=&pdev->dev;
+        scsi_set_device(shost, &pdev->dev);
 }
 
 

drivers/scsi/scsi_ioctl.c

@@ -393,12 +393,13 @@ int scsi_ioctl_send_command(Scsi_Device * dev, Scsi_Ioctl_Command * sic)
  *          any copy_to_user() error on failure there
  */
 static int
-scsi_ioctl_get_pci(Scsi_Device * dev, void *arg)
+scsi_ioctl_get_pci(Scsi_Device * sdev, void *arg)
 {
+	struct device *dev = sdev->host->host_driverfs_dev.parent;
 
-        if (!dev->host->pci_dev) return -ENXIO;
-        return copy_to_user(arg, dev->host->pci_dev->slot_name,
-                            sizeof(dev->host->pci_dev->slot_name));
+        if (!dev) return -ENXIO;
+        return copy_to_user(arg, dev->bus_id,
+                            sizeof(dev->bus_id));
 }
 
 

drivers/scsi/scsi_scan.c

@@ -433,11 +433,12 @@ static void scsi_initialize_merge_fn(struct scsi_device *sd)
 {
 	request_queue_t *q = &sd->request_queue;
 	struct Scsi_Host *sh = sd->host;
+	struct device *dev = sh->host_driverfs_dev.parent;
 	u64 bounce_limit;
 
 	if (sh->highmem_io) {
-		if (sh->pci_dev && PCI_DMA_BUS_IS_PHYS) {
-			bounce_limit = sh->pci_dev->dma_mask;
+		if (dev && dev->dma_mask && PCI_DMA_BUS_IS_PHYS) {
+			bounce_limit = *dev->dma_mask;
 		} else {
 			/*
 			 * Platforms with virtual-DMA translation

drivers/scsi/st.c

@@ -3780,13 +3780,14 @@ static int st_attach(Scsi_Device * SDp)
 	tpnt->try_dio = try_direct_io && !SDp->host->unchecked_isa_dma;
 	bounce_limit = BLK_BOUNCE_HIGH; /* Borrowed from scsi_merge.c */
 	if (SDp->host->highmem_io) {
+		struct device *dev = SDp->host->host_driverfs_dev.parent;
 		if (!PCI_DMA_BUS_IS_PHYS)
 			/* Platforms with virtual-DMA translation
 			 * hardware have no practical limit.
 			 */
 			bounce_limit = BLK_BOUNCE_ANY;
-		else if (SDp->host->pci_dev)
-			bounce_limit = SDp->host->pci_dev->dma_mask;
+		else if (dev && dev->dma_mask)
+			bounce_limit = *dev->dma_mask;
 	} else if (SDp->host->unchecked_isa_dma)
 		bounce_limit = BLK_BOUNCE_ISA;
 	bounce_limit >>= PAGE_SHIFT;