[PATCH 25/29] sun3_scsi: Convert to platform device

Finn Thain
2014-10-02T06:56:53Z

[-- Attachment #1: sun3_scsi-convert-to-platform-device --]
[-- Type: text/plain, Size: 12931 bytes --]

Convert sun3_scsi to platform device and eliminate scsi_register().

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>

---
arch/m68k/sun3/config.c | 11 +
drivers/scsi/sun3_scsi.c | 405 +++++++++++++++++++++++------------------------
drivers/scsi/sun3_scsi.h | 8
3 files changed, 214 insertions(+), 210 deletions(-)

Index: linux/arch/m68k/sun3/config.c
===================================================================
--- linux.orig/arch/m68k/sun3/config.c 2014-10-02 16:55:28.000000000 +1000
+++ linux/arch/m68k/sun3/config.c 2014-10-02 16:56:22.000000000 +1000
@@ -16,6 +16,7 @@
#include <linux/console.h>
#include <linux/init.h>
#include <linux/bootmem.h>
+#include <linux/platform_device.h>

#include <asm/oplib.h>
#include <asm/setup.h>
@@ -169,3 +170,13 @@ static void __init sun3_sched_init(irq_h
intersil_clear();
}

+#ifdef CONFIG_SUN3_SCSI
+int __init sun3_platform_init(void)
+{
+ platform_device_register_simple("sun3_scsi", -1, NULL, 0);
+ platform_device_register_simple("sun3_scsi_vme", -1, NULL, 0);
+ return 0;
+}
+
+arch_initcall(sun3_platform_init);
+#endif
Index: linux/drivers/scsi/sun3_scsi.c
===================================================================
--- linux.orig/drivers/scsi/sun3_scsi.c 2014-10-02 16:56:14.000000000 +1000
+++ linux/drivers/scsi/sun3_scsi.c 2014-10-02 16:56:22.000000000 +1000
@@ -23,18 +23,14 @@
*/

#include <linux/types.h>
-#include <linux/stddef.h>
-#include <linux/ctype.h>
#include <linux/delay.h>
-
#include <linux/module.h>
-#include <linux/signal.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/blkdev.h>
+#include <linux/platform_device.h>

#include <asm/io.h>
-
#include <asm/sun3ints.h>
#include <asm/dvma.h>
#include <asm/idprom.h>
@@ -59,8 +55,6 @@ extern int sun3_map_test(unsigned long,
#endif

-static irqreturn_t scsi_sun3_intr(int irq, void *dummy);
-
static int setup_can_queue = -1;
module_param(setup_can_queue, int, 0);
static int setup_cmd_per_lun = -1;
@@ -89,15 +83,14 @@ static struct scsi_cmnd *sun3_dma_setup_
/* minimum number of bytes to do dma on */
#define SUN3_DMA_MINSIZE 128

-static volatile unsigned char *sun3_scsi_regp;
+static unsigned char *sun3_scsi_regp;
static volatile struct sun3_dma_regs *dregs;
-#ifndef SUN3_SCSI_VME
-static struct sun3_udc_regs *udc_regs = NULL;
-#endif
+static struct sun3_udc_regs *udc_regs;
static unsigned char *sun3_dma_orig_addr = NULL;
static unsigned long sun3_dma_orig_count = 0;
static int sun3_dma_active = 0;
static unsigned long last_residual = 0;
+static struct Scsi_Host *default_instance;

/*
* NCR 5380 register access functions
@@ -105,12 +98,12 @@ static unsigned long last_residual = 0;

static inline unsigned char sun3scsi_read(int reg)
{
- return( sun3_scsi_regp[reg] );
+ return in_8(sun3_scsi_regp + reg);
}

static inline void sun3scsi_write(int reg, int value)
{
- sun3_scsi_regp[reg] = value;
+ out_8(sun3_scsi_regp + reg, value);
}

#ifndef SUN3_SCSI_VME
@@ -137,192 +130,7 @@ static inline void sun3_udc_write(unsign
}
#endif

-/*
- * XXX: status debug
- */
-static struct Scsi_Host *default_instance;
-
-/*
- * Function : int sun3scsi_detect(struct scsi_host_template * tpnt)
- *
- * Purpose : initializes mac NCR5380 driver based on the
- * command line / compile time port and irq definitions.
- *
- * Inputs : tpnt - template for this SCSI adapter.
- *
- * Returns : 1 if a host adapter was found, 0 if not.
- *
- */
-
-static int __init sun3scsi_detect(struct scsi_host_template *tpnt)
-{
- unsigned long ioaddr, irq;
- static int called = 0;
- struct Scsi_Host *instance;
-#ifdef SUN3_SCSI_VME
- int i;
- unsigned long addrs[3] = { IOBASE_SUN3_VMESCSI,
- IOBASE_SUN3_VMESCSI + 0x4000,
- 0 };
- unsigned long vecs[3] = { SUN3_VEC_VMESCSI0,
- SUN3_VEC_VMESCSI1,
- 0 };
-#endif
-
- /* check that this machine has an onboard 5380 */
- switch(idprom->id_machtype) {
-#ifdef SUN3_SCSI_VME
- case SM_SUN3|SM_3_160:
- case SM_SUN3|SM_3_260:
- break;
-#else
- case SM_SUN3|SM_3_50:
- case SM_SUN3|SM_3_60:
- break;
-#endif
-
- default:
- return 0;
- }
-
- if(called)
- return 0;
-
-#ifdef SUN3_SCSI_VME
- tpnt->proc_name = "Sun3 5380 VME SCSI";
-#else
- tpnt->proc_name = "Sun3 5380 SCSI";
-#endif
-
- /* setup variables */
- if (setup_can_queue > 0)
- tpnt->can_queue = setup_can_queue;
- if (setup_cmd_per_lun > 0)
- tpnt->cmd_per_lun = setup_cmd_per_lun;
- if (setup_sg_tablesize >= 0)
- tpnt->sg_tablesize = setup_sg_tablesize;
-
- if (setup_hostid >= 0)
- tpnt->this_id = setup_hostid;
- else {
- /* use 7 as default */
- tpnt->this_id = 7;
- }
-
-#ifdef SUN3_SCSI_VME
- ioaddr = 0;
- for (i = 0; addrs[i] != 0; i++) {
- unsigned char x;
-
- ioaddr = (unsigned long)sun3_ioremap(addrs[i], PAGE_SIZE,
- SUN3_PAGE_TYPE_VME16);
- irq = vecs[i];
- sun3_scsi_regp = (unsigned char *)ioaddr;
-
- dregs = (struct sun3_dma_regs *)(((unsigned char *)ioaddr) + 8);
-
- if (sun3_map_test((unsigned long)dregs, &x)) {
- unsigned short oldcsr;
-
- oldcsr = dregs->csr;
- dregs->csr = 0;
- udelay(SUN3_DMA_DELAY);
- if (dregs->csr == 0x1400)
- break;
-
- dregs->csr = oldcsr;
- }
-
- iounmap((void *)ioaddr);
- ioaddr = 0;
- }
-
- if (!ioaddr)
- return 0;
-#else
- irq = IRQ_SUN3_SCSI;
- ioaddr = (unsigned long)ioremap(IOBASE_SUN3_SCSI, PAGE_SIZE);
- sun3_scsi_regp = (unsigned char *)ioaddr;
-
- dregs = (struct sun3_dma_regs *)(((unsigned char *)ioaddr) + 8);
-
- if((udc_regs = dvma_malloc(sizeof(struct sun3_udc_regs)))
- == NULL) {
- printk("SUN3 Scsi couldn't allocate DVMA memory!\n");
- return 0;
- }
-#endif
-#ifdef SUPPORT_TAGS
- if (setup_use_tagged_queuing < 0)
- setup_use_tagged_queuing = 1;
-#endif
-
- instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
- if(instance == NULL)
- return 0;
-
- default_instance = instance;
-
- instance->io_port = (unsigned long) ioaddr;
- instance->irq = irq;
-
- NCR5380_init(instance, 0);
-
- instance->n_io_port = 32;
-
- if (request_irq(instance->irq, scsi_sun3_intr,
- 0, "Sun3SCSI-5380", instance)) {
-#ifndef REAL_DMA
- printk("scsi%d: IRQ%d not free, interrupts disabled\n",
- instance->host_no, instance->irq);
- instance->irq = IRQ_NONE;
-#else
- printk("scsi%d: IRQ%d not free, bailing out\n",
- instance->host_no, instance->irq);
- return 0;
-#endif
- }
-
- dregs->csr = 0;
- udelay(SUN3_DMA_DELAY);
- dregs->csr = CSR_SCSI | CSR_FIFO | CSR_INTR;
- udelay(SUN3_DMA_DELAY);
- dregs->fifo_count = 0;
-#ifdef SUN3_SCSI_VME
- dregs->fifo_count_hi = 0;
- dregs->dma_addr_hi = 0;
- dregs->dma_addr_lo = 0;
- dregs->dma_count_hi = 0;
- dregs->dma_count_lo = 0;
-
- dregs->ivect = VME_DATA24 | (instance->irq & 0xff);
-#endif
-
- called = 1;
-
#ifdef RESET_BOOT
- sun3_scsi_reset_boot(instance);
-#endif
-
- return 1;
-}
-
-static int sun3scsi_release(struct Scsi_Host *shpnt)
-{
- if (shpnt->irq != IRQ_NONE)
- free_irq(shpnt->irq, shpnt);
-
- iounmap((void *)sun3_scsi_regp);
-
- NCR5380_exit(shpnt);
- return 0;
-}
-
-#ifdef RESET_BOOT
-/*
- * Our 'bus reset on boot' function
- */
-
static void sun3_scsi_reset_boot(struct Scsi_Host *instance)
{
unsigned long end;
@@ -671,11 +479,21 @@ static int sun3scsi_dma_finish(int write

#include "sun3_NCR5380.c"

-static struct scsi_host_template driver_template = {
+#ifdef SUN3_SCSI_VME
+#define SUN3_SCSI_NAME "Sun3 NCR5380 VME SCSI"
+#define DRV_MODULE_NAME "sun3_scsi_vme"
+#else
+#define SUN3_SCSI_NAME "Sun3 NCR5380 SCSI"
+#define DRV_MODULE_NAME "sun3_scsi"
+#endif
+
+#define PFX DRV_MODULE_NAME ": "
+
+static struct scsi_host_template sun3_scsi_template = {
+ .module = THIS_MODULE,
+ .proc_name = DRV_MODULE_NAME,
.show_info = sun3scsi_show_info,
.name = SUN3_SCSI_NAME,
- .detect = sun3scsi_detect,
- .release = sun3scsi_release,
.info = sun3scsi_info,
.queuecommand = sun3scsi_queue_command,
.eh_abort_handler = sun3scsi_abort,
@@ -687,7 +505,190 @@ static struct scsi_host_template driver_
.use_clustering = DISABLE_CLUSTERING
};

+static int __init sun3_scsi_probe(struct platform_device *pdev)
+{
+ struct Scsi_Host *instance;
+ int error;
+ unsigned char *ioaddr;
+ unsigned int irq;
+#ifdef SUN3_SCSI_VME
+ int i;
+ unsigned long addrs[3] = {
+ IOBASE_SUN3_VMESCSI,
+ IOBASE_SUN3_VMESCSI + 0x4000,
+ 0
+ };
+ unsigned long vecs[3] = {
+ SUN3_VEC_VMESCSI0,
+ SUN3_VEC_VMESCSI1,
+ 0
+ };
+#endif
+
+ /* check that this machine has an onboard 5380 */
+ switch (idprom->id_machtype) {
+#ifdef SUN3_SCSI_VME
+ case SM_SUN3|SM_3_160:
+ case SM_SUN3|SM_3_260:
+ break;
+#else
+ case SM_SUN3|SM_3_50:
+ case SM_SUN3|SM_3_60:
+ break;
+#endif
+ default:
+ return -ENODEV;
+ }
+
+ if (setup_can_queue > 0)
+ sun3_scsi_template.can_queue = setup_can_queue;
+ if (setup_cmd_per_lun > 0)
+ sun3_scsi_template.cmd_per_lun = setup_cmd_per_lun;
+ if (setup_sg_tablesize >= 0)
+ sun3_scsi_template.sg_tablesize = setup_sg_tablesize;
+ if (setup_hostid >= 0)
+ sun3_scsi_template.this_id = setup_hostid & 7;
+
+#ifdef SUPPORT_TAGS
+ if (setup_use_tagged_queuing < 0)
+ setup_use_tagged_queuing = 1;
+#endif
+
+#ifdef SUN3_SCSI_VME
+ ioaddr = NULL;
+ for (i = 0; addrs[i] != 0; i++) {
+ unsigned char x;
+
+ irq = vecs[i];
+ ioaddr = sun3_ioremap(addrs[i], PAGE_SIZE,
+ SUN3_PAGE_TYPE_VME16);
+ dregs = (struct sun3_dma_regs *)(ioaddr + 8);
+
+ if (sun3_map_test((unsigned long)dregs, &x)) {
+ unsigned short oldcsr;
+
+ oldcsr = dregs->csr;
+ dregs->csr = 0;
+ udelay(SUN3_DMA_DELAY);
+ if (dregs->csr == 0x1400)
+ break;
+
+ dregs->csr = oldcsr;
+ }
+
+ iounmap(ioaddr);
+ ioaddr = NULL;
+ }
+ if (!ioaddr)
+ return -ENODEV;
+#else
+ irq = IRQ_SUN3_SCSI;
+ ioaddr = ioremap(IOBASE_SUN3_SCSI, PAGE_SIZE);
+ dregs = (struct sun3_dma_regs *)(ioaddr + 8);
+
+ udc_regs = dvma_malloc(sizeof(struct sun3_udc_regs));
+ if (!udc_regs) {
+ pr_err(PFX "couldn't allocate DVMA memory!\n");
+ iounmap(ioaddr);
+ return -ENOMEM;
+ }
+#endif
+
+ sun3_scsi_regp = ioaddr;
+
+ instance = scsi_host_alloc(&sun3_scsi_template,
+ sizeof(struct NCR5380_hostdata));
+ if (!instance) {
+ error = -ENOMEM;
+ goto fail_alloc;
+ }
+ default_instance = instance;
+
+ instance->io_port = (unsigned long)ioaddr;
+ instance->n_io_port = 32;
+ instance->irq = irq;
+
+ NCR5380_init(instance, 0);
+
+ error = request_irq(instance->irq, scsi_sun3_intr, 0,
+ "NCR5380", instance);
+ if (error) {
+#ifdef REAL_DMA
+ pr_err(PFX "scsi%d: IRQ %d not free, bailing out\n",
+ instance->host_no, instance->irq);
+ goto fail_irq;
+#else
+ pr_warn(PFX "scsi%d: IRQ %d not free, interrupts disabled\n",
+ instance->host_no, instance->irq);
+ instance->irq = IRQ_NONE;
+#endif
+ }
+
+ dregs->csr = 0;
+ udelay(SUN3_DMA_DELAY);
+ dregs->csr = CSR_SCSI | CSR_FIFO | CSR_INTR;
+ udelay(SUN3_DMA_DELAY);
+ dregs->fifo_count = 0;
+#ifdef SUN3_SCSI_VME
+ dregs->fifo_count_hi = 0;
+ dregs->dma_addr_hi = 0;
+ dregs->dma_addr_lo = 0;
+ dregs->dma_count_hi = 0;
+ dregs->dma_count_lo = 0;
+
+ dregs->ivect = VME_DATA24 | (instance->irq & 0xff);
+#endif
+
+#ifdef RESET_BOOT
+ sun3_scsi_reset_boot(instance);
+#endif
+
+ error = scsi_add_host(instance, NULL);
+ if (error)
+ goto fail_host;
+
+ platform_set_drvdata(pdev, instance);
+
+ scsi_scan_host(instance);
+ return 0;
+
+fail_host:
+ if (instance->irq != IRQ_NONE)
+ free_irq(instance->irq, instance);
+fail_irq:
+ NCR5380_exit(instance);
+ scsi_host_put(instance);
+fail_alloc:
+ if (udc_regs)
+ dvma_free(udc_regs);
+ iounmap(sun3_scsi_regp);
+ return error;
+}
+
+static int __exit sun3_scsi_remove(struct platform_device *pdev)
+{
+ struct Scsi_Host *instance = platform_get_drvdata(pdev);
+
+ scsi_remove_host(instance);
+ if (instance->irq != IRQ_NONE)
+ free_irq(instance->irq, instance);
+ NCR5380_exit(instance);
+ scsi_host_put(instance);
+ if (udc_regs)
+ dvma_free(udc_regs);
+ iounmap(sun3_scsi_regp);
+ return 0;
+}
+
+static struct platform_driver sun3_scsi_driver = {
+ .remove = __exit_p(sun3_scsi_remove),
+ .driver = {
+ .name = DRV_MODULE_NAME,
+ .owner = THIS_MODULE,
+ },
+};

-#include "scsi_module.c"
+module_platform_driver_probe(sun3_scsi_driver, sun3_scsi_probe);

+MODULE_ALIAS("platform:" DRV_MODULE_NAME);
MODULE_LICENSE("GPL");
Index: linux/drivers/scsi/sun3_scsi.h
===================================================================
--- linux.orig/drivers/scsi/sun3_scsi.h 2014-10-02 16:56:11.000000000 +1000
+++ linux/drivers/scsi/sun3_scsi.h 2014-10-02 16:56:22.000000000 +1000
@@ -29,14 +29,6 @@

#define MAX_TAGS 32

-#include <scsi/scsicam.h>
-
-#ifdef SUN3_SCSI_VME
-#define SUN3_SCSI_NAME "Sun3 NCR5380 VME SCSI"
-#else
-#define SUN3_SCSI_NAME "Sun3 NCR5380 SCSI"
-#endif
-
#define NCR5380_implementation_fields /* none */

#define NCR5380_local_declare() \