On Wed, Mar 14, 2018 at 12:56:31PM +0100, John Paul Adrian Glaubitz wrote:
Ah, bummer. I wanted to keep the MVME drivers but I never managed to get them ported to the new SCSI layer.
Anyone out there who could help me with that?
Here is how a trivial conversion should look like. Probably doesn't
even compile as-is but might be a good starting point:
---
From e1a863426652c4db3254187c14ed718e78f3033d Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@xxxxxx>
Date: Wed, 14 Mar 2018 14:13:00 +0100
Subject: mvme147: stop using scsi_module.c
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/scsi/mvme147.c | 109 ++++++++++++++++++++++++++-----------------------
1 file changed, 58 insertions(+), 51 deletions(-)
diff --git a/drivers/scsi/mvme147.c b/drivers/scsi/mvme147.c
index e6b2b681fda3..f8d8d9de394d 100644
--- a/drivers/scsi/mvme147.c
+++ b/drivers/scsi/mvme147.c
@@ -3,6 +3,9 @@
#include <linux/mm.h>
#include <linux/blkdev.h>
#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
#include <asm/page.h>
#include <asm/pgtable.h>
@@ -14,9 +17,6 @@
#include "wd33c93.h"
#include "mvme147.h"
-#include <linux/stat.h>
-
-
static irqreturn_t mvme147_intr(int irq, void *data)
{
struct Scsi_Host *instance = data;
@@ -65,40 +65,57 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
m147_pcc->dma_cntrl = 0;
}
-int mvme147_detect(struct scsi_host_template *tpnt)
+static struct scsi_host_template mvme147_host_template = {
+ .module = THIS_MODULE,
+ .proc_name = "MVME147",
+ .name = "MVME147 built-in SCSI",
+ .queuecommand = wd33c93_queuecommand,
+ .eh_abort_handler = wd33c93_abort,
+ .eh_host_reset_handler = wd33c93_host_reset,
+ .show_info = wd33c93_show_info,
+ .write_info = wd33c93_write_info,
+ .can_queue = CAN_QUEUE,
+ .this_id = 7,
+ .sg_tablesize = SG_ALL,
+ .cmd_per_lun = CMD_PER_LUN,
+ .use_clustering = ENABLE_CLUSTERING
+};
+
+static struct Scsi_Host *mvme147_shost;
+
+static int __init mvme147_init(void)
{
- static unsigned char called = 0;
- struct Scsi_Host *instance;
wd33c93_regs regs;
struct WD33C93_hostdata *hdata;
+ int error = -ENOMEM;
- if (!MACH_IS_MVME147 || called)
+ if (!MACH_IS_MVME147)
return 0;
- called++;
- tpnt->proc_name = "MVME147";
- tpnt->show_info = wd33c93_show_info,
- tpnt->write_info = wd33c93_write_info,
-
- instance = scsi_register(tpnt, sizeof(struct WD33C93_hostdata));
- if (!instance)
+ mvme147_shost = scsi_host_alloc(&mvme147_host_template,
+ sizeof(struct WD33C93_hostdata));
+ if (!mvme147_shost)
goto err_out;
+ mvme147_shost->base = 0xfffe4000;
+ mvme147_shost->irq = MVME147_IRQ_SCSI_PORT;
- instance->base = 0xfffe4000;
- instance->irq = MVME147_IRQ_SCSI_PORT;
regs.SASR = (volatile unsigned char *)0xfffe4000;
regs.SCMD = (volatile unsigned char *)0xfffe4001;
- hdata = shost_priv(instance);
+
+ hdata = shost_priv(mvme147_shost);
hdata->no_sync = 0xff;
hdata->fast = 0;
hdata->dma_mode = CTRL_DMA;
- wd33c93_init(instance, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
- if (request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0,
- "MVME147 SCSI PORT", instance))
+ wd33c93_init(mvme147_shost, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
+
+ error = request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0,
+ "MVME147 SCSI PORT", mvme147_shost);
+ if (error)
goto err_unregister;
- if (request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0,
- "MVME147 SCSI DMA", instance))
+ error = request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0,
+ "MVME147 SCSI DMA", mvme147_shost);
+ if (error)
goto err_free_irq;
#if 0 /* Disabled; causes problems booting */
m147_pcc->scsi_interrupt = 0x10; /* Assert SCSI bus reset */
@@ -111,41 +128,31 @@ int mvme147_detect(struct scsi_host_template *tpnt)
m147_pcc->dma_cntrl = 0x00; /* ensure DMA is stopped */
m147_pcc->dma_intr = 0x89; /* Ack and enable ints */
-
- return 1;
+
+ error = scsi_add_host(mvme147_shost, NULL);
+ if (error)
+ goto err_free_irq;
+ scsi_scan_host(mvme147_shost);
+ return 0;
err_free_irq:
- free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
+ free_irq(MVME147_IRQ_SCSI_PORT, mvme147_shost);
err_unregister:
- scsi_unregister(instance);
+ scsi_host_put(mvme147_shost);
err_out:
- return 0;
+ return error;
}
-static struct scsi_host_template driver_template = {
- .proc_name = "MVME147",
- .name = "MVME147 built-in SCSI",
- .detect = mvme147_detect,
- .release = mvme147_release,
- .queuecommand = wd33c93_queuecommand,
- .eh_abort_handler = wd33c93_abort,
- .eh_host_reset_handler = wd33c93_host_reset,
- .can_queue = CAN_QUEUE,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = CMD_PER_LUN,
- .use_clustering = ENABLE_CLUSTERING
-};
-
-
-#include "scsi_module.c"
-
-int mvme147_release(struct Scsi_Host *instance)
+static void __exit mvme147_exit(void)
{
-#ifdef MODULE
+ scsi_remove_host(mvme147_shost);
+
/* XXX Make sure DMA is stopped! */
- free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
- free_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr);
-#endif
- return 1;
+ free_irq(MVME147_IRQ_SCSI_PORT, mvme147_shost);
+ free_irq(MVME147_IRQ_SCSI_DMA, mvme147_shost);
+
+ scsi_host_put(mvme147_shost);
}
+
+module_init(mvme147_init);
+module_exit(mvme147_exit);
--
2.14.2
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