[TC] dec_esp: Driver model for the PMAZ-A

This is a set of changes that converts the PMAZ-A support to the driver model.

The use of the driver model required switching to the hotplug SCSI
initialization model, which in turn required a change to the core NCR53C9x
driver.  I decided not to break all the frontend drivers and introduced an
additional parameter for esp_allocate() to select between the old and the new
model.  I hope this is OK, but I would be fine with converting NCR53C9x to the
new model unconditionally as long as I do not have to fix all the other
frontends (OK, perhaps I could do some of them ;-) ).
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

drivers/scsi/NCR53C9x.c

@@ -528,12 +528,16 @@ void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs)
 /* Allocate structure and insert basic data such as SCSI chip frequency
  * data and a pointer to the device
  */
-struct NCR_ESP* esp_allocate(struct scsi_host_template *tpnt, void *esp_dev)
+struct NCR_ESP* esp_allocate(struct scsi_host_template *tpnt, void *esp_dev,
+			     int hotplug)
 {
 	struct NCR_ESP *esp, *elink;
 	struct Scsi_Host *esp_host;
 
-	esp_host = scsi_register(tpnt, sizeof(struct NCR_ESP));
+	if (hotplug)
+		esp_host = scsi_host_alloc(tpnt, sizeof(struct NCR_ESP));
+	else
+		esp_host = scsi_register(tpnt, sizeof(struct NCR_ESP));
 	if(!esp_host)
 		panic("Cannot register ESP SCSI host");
 	esp = (struct NCR_ESP *) esp_host->hostdata;

drivers/scsi/NCR53C9x.h

@@ -652,7 +652,7 @@ extern int nesps, esps_in_use, esps_running;
 
 /* External functions */
 extern void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs);
-extern struct NCR_ESP *esp_allocate(struct scsi_host_template *, void *);
+extern struct NCR_ESP *esp_allocate(struct scsi_host_template *, void *, int);
 extern void esp_deallocate(struct NCR_ESP *);
 extern void esp_release(void);
 extern void esp_initialize(struct NCR_ESP *);

drivers/scsi/blz1230.c

@@ -121,7 +121,8 @@ int __init blz1230_esp_detect(struct scsi_host_template *tpnt)
 		 */
 		address = ZTWO_VADDR(board);
 		eregs = (struct ESP_regs *)(address + REAL_BLZ1230_ESP_ADDR);
-		esp = esp_allocate(tpnt, (void *)board+REAL_BLZ1230_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + REAL_BLZ1230_ESP_ADDR,
+				   0);
 
 		esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
 		udelay(5);

drivers/scsi/blz2060.c

@@ -100,7 +100,7 @@ int __init blz2060_esp_detect(struct scsi_host_template *tpnt)
 	    unsigned long board = z->resource.start;
 	    if (request_mem_region(board+BLZ2060_ESP_ADDR,
 				   sizeof(struct ESP_regs), "NCR53C9x")) {
-		esp = esp_allocate(tpnt, (void *)board+BLZ2060_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + BLZ2060_ESP_ADDR, 0);
 
 		/* Do command transfer with programmed I/O */
 		esp->do_pio_cmds = 1;

drivers/scsi/cyberstorm.c

@@ -126,7 +126,7 @@ int __init cyber_esp_detect(struct scsi_host_template *tpnt)
 					   sizeof(struct ESP_regs));
 			return 0;
 		}
-		esp = esp_allocate(tpnt, (void *)board+CYBER_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + CYBER_ESP_ADDR, 0);
 
 		/* Do command transfer with programmed I/O */
 		esp->do_pio_cmds = 1;

drivers/scsi/cyberstormII.c

@@ -98,7 +98,7 @@ int __init cyberII_esp_detect(struct scsi_host_template *tpnt)
 		address = (unsigned long)ZTWO_VADDR(board);
 		eregs = (struct ESP_regs *)(address + CYBERII_ESP_ADDR);
 
-		esp = esp_allocate(tpnt, (void *)board+CYBERII_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + CYBERII_ESP_ADDR, 0);
 
 		esp_write(eregs->esp_cfg1, (ESP_CONFIG1_PENABLE | 7));
 		udelay(5);

drivers/scsi/fastlane.c

@@ -142,7 +142,7 @@ int __init fastlane_esp_detect(struct scsi_host_template *tpnt)
 		if (board < 0x1000000) {
 			goto err_release;
 		}
-		esp = esp_allocate(tpnt, (void *)board+FASTLANE_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + FASTLANE_ESP_ADDR, 0);
 
 		/* Do command transfer with programmed I/O */
 		esp->do_pio_cmds = 1;

drivers/scsi/jazz_esp.c

@@ -75,7 +75,7 @@ static int jazz_esp_detect(struct scsi_host_template *tpnt)
      */
     if (1) {
 	esp_dev = NULL;
-	esp = esp_allocate(tpnt, (void *) esp_dev);
+	esp = esp_allocate(tpnt, esp_dev, 0);
 	
 	/* Do command transfer with programmed I/O */
 	esp->do_pio_cmds = 1;

drivers/scsi/mac_esp.c

@@ -351,7 +351,7 @@ int mac_esp_detect(struct scsi_host_template * tpnt)
 	for (chipnum = 0; chipnum < chipspresent; chipnum ++) {
 		struct NCR_ESP * esp;
 
-		esp = esp_allocate(tpnt, (void *) NULL);
+		esp = esp_allocate(tpnt, NULL, 0);
 		esp->eregs = (struct ESP_regs *) get_base(chipnum);
 
 		esp->dma_irq_p = &esp_dafb_dma_irq_p;

drivers/scsi/mca_53c9x.c

@@ -122,7 +122,7 @@ static int mca_esp_detect(struct scsi_host_template *tpnt)
 		if ((slot = mca_find_adapter(*id_to_check, 0)) !=
 		  MCA_NOTFOUND) 
 		{
-			esp = esp_allocate(tpnt, (void *) NULL);
+			esp = esp_allocate(tpnt, NULL, 0);
 
 			pos[0] = mca_read_stored_pos(slot, 2);
 			pos[1] = mca_read_stored_pos(slot, 3);

drivers/scsi/oktagon_esp.c

@@ -133,7 +133,7 @@ int oktagon_esp_detect(struct scsi_host_template *tpnt)
 		eregs = (struct ESP_regs *)(address + OKTAGON_ESP_ADDR);
 
 		/* This line was 5 lines lower */
-		esp = esp_allocate(tpnt, (void *)board+OKTAGON_ESP_ADDR);
+		esp = esp_allocate(tpnt, (void *)board + OKTAGON_ESP_ADDR, 0);
 
 		/* we have to shift the registers only one bit for oktagon */
 		esp->shift = 1;

drivers/scsi/sun3x_esp.c

@@ -53,7 +53,7 @@ int sun3x_esp_detect(struct scsi_host_template *tpnt)
 	struct ConfigDev *esp_dev;
 
 	esp_dev = 0;
-	esp = esp_allocate(tpnt, (void *) esp_dev);
+	esp = esp_allocate(tpnt, esp_dev, 0);
 
 	/* Do command transfer with DMA */
 	esp->do_pio_cmds = 0;