Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/scsi/mvme147.c b/drivers/scsi/mvme147.c
new file mode 100644
index 0000000..e73b33f
--- /dev/null
+++ b/drivers/scsi/mvme147.c
@@ -0,0 +1,155 @@
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/blkdev.h>
+#include <linux/sched.h>
+#include <linux/version.h>
+#include <linux/interrupt.h>
+
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/mvme147hw.h>
+#include <asm/irq.h>
+
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+#include "wd33c93.h"
+#include "mvme147.h"
+
+#include<linux/stat.h>
+
+#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
+
+static struct Scsi_Host *mvme147_host = NULL;
+
+static irqreturn_t mvme147_intr (int irq, void *dummy, struct pt_regs *fp)
+{
+ if (irq == MVME147_IRQ_SCSI_PORT)
+ wd33c93_intr (mvme147_host);
+ else
+ m147_pcc->dma_intr = 0x89; /* Ack and enable ints */
+ return IRQ_HANDLED;
+}
+
+static int dma_setup (Scsi_Cmnd *cmd, int dir_in)
+{
+ unsigned char flags = 0x01;
+ unsigned long addr = virt_to_bus(cmd->SCp.ptr);
+
+ /* setup dma direction */
+ if (!dir_in)
+ flags |= 0x04;
+
+ /* remember direction */
+ HDATA(mvme147_host)->dma_dir = dir_in;
+
+ if (dir_in)
+ /* invalidate any cache */
+ cache_clear (addr, cmd->SCp.this_residual);
+ else
+ /* push any dirty cache */
+ cache_push (addr, cmd->SCp.this_residual);
+
+ /* start DMA */
+ m147_pcc->dma_bcr = cmd->SCp.this_residual | (1<<24);
+ m147_pcc->dma_dadr = addr;
+ m147_pcc->dma_cntrl = flags;
+
+ /* return success */
+ return 0;
+}
+
+static void dma_stop (struct Scsi_Host *instance, Scsi_Cmnd *SCpnt,
+ int status)
+{
+ m147_pcc->dma_cntrl = 0;
+}
+
+int mvme147_detect(Scsi_Host_Template *tpnt)
+{
+ static unsigned char called = 0;
+ wd33c93_regs regs;
+
+ if (!MACH_IS_MVME147 || called)
+ return 0;
+ called++;
+
+ tpnt->proc_name = "MVME147";
+ tpnt->proc_info = &wd33c93_proc_info;
+
+ mvme147_host = scsi_register (tpnt, sizeof(struct WD33C93_hostdata));
+ if (!mvme147_host)
+ goto err_out;
+
+ mvme147_host->base = 0xfffe4000;
+ mvme147_host->irq = MVME147_IRQ_SCSI_PORT;
+ regs.SASR = (volatile unsigned char *)0xfffe4000;
+ regs.SCMD = (volatile unsigned char *)0xfffe4001;
+ wd33c93_init(mvme147_host, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
+
+ if (request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0, "MVME147 SCSI PORT", mvme147_intr))
+ goto err_unregister;
+ if (request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0, "MVME147 SCSI DMA", mvme147_intr))
+ goto err_free_irq;
+#if 0 /* Disabled; causes problems booting */
+ m147_pcc->scsi_interrupt = 0x10; /* Assert SCSI bus reset */
+ udelay(100);
+ m147_pcc->scsi_interrupt = 0x00; /* Negate SCSI bus reset */
+ udelay(2000);
+ m147_pcc->scsi_interrupt = 0x40; /* Clear bus reset interrupt */
+#endif
+ m147_pcc->scsi_interrupt = 0x09; /* Enable interrupt */
+
+ m147_pcc->dma_cntrl = 0x00; /* ensure DMA is stopped */
+ m147_pcc->dma_intr = 0x89; /* Ack and enable ints */
+
+ return 1;
+
+ err_free_irq:
+ free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
+ err_unregister:
+ wd33c93_release();
+ scsi_unregister(mvme147_host);
+ err_out:
+ return 0;
+}
+
+static int mvme147_bus_reset(Scsi_Cmnd *cmd)
+{
+ /* FIXME perform bus-specific reset */
+ wd33c93_host_reset(cmd);
+ return SUCCESS;
+}
+
+#define HOSTS_C
+
+#include "mvme147.h"
+
+static 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_bus_reset_handler = mvme147_bus_reset,
+ .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)
+{
+#ifdef MODULE
+ /* XXX Make sure DMA is stopped! */
+ wd33c93_release();
+ free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
+ free_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr);
+#endif
+ return 1;
+}