1 #include <linux/types.h>
4 #include <linux/sched.h>
5 #include <linux/version.h>
8 #include <asm/pgtable.h>
9 #include <asm/mvme147hw.h>
17 #include<linux/stat.h>
19 #define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
21 static struct Scsi_Host *mvme147_host = NULL;
23 static void mvme147_intr (int irq, void *dummy, struct pt_regs *fp)
25 if (irq == MVME147_IRQ_SCSI_PORT)
26 wd33c93_intr (mvme147_host);
28 m147_pcc->dma_intr = 0x89; /* Ack and enable ints */
31 static int dma_setup (Scsi_Cmnd *cmd, int dir_in)
33 unsigned char flags = 0x01;
34 unsigned long addr = virt_to_bus(cmd->SCp.ptr);
36 /* setup dma direction */
40 /* remember direction */
41 HDATA(mvme147_host)->dma_dir = dir_in;
44 /* invalidate any cache */
45 cache_clear (addr, cmd->SCp.this_residual);
47 /* push any dirty cache */
48 cache_push (addr, cmd->SCp.this_residual);
51 m147_pcc->dma_bcr = cmd->SCp.this_residual | (1<<24);
52 m147_pcc->dma_dadr = addr;
53 m147_pcc->dma_cntrl = flags;
59 static void dma_stop (struct Scsi_Host *instance, Scsi_Cmnd *SCpnt,
62 m147_pcc->dma_cntrl = 0;
65 int mvme147_detect(Scsi_Host_Template *tpnt)
67 static unsigned char called = 0;
70 if (!MACH_IS_MVME147 || called)
74 tpnt->proc_name = "MVME147";
75 tpnt->proc_info = &wd33c93_proc_info;
77 mvme147_host = scsi_register (tpnt, sizeof(struct WD33C93_hostdata));
81 mvme147_host->base = 0xfffe4000;
82 mvme147_host->irq = MVME147_IRQ_SCSI_PORT;
83 regs.SASR = (volatile unsigned char *)0xfffe4000;
84 regs.SCMD = (volatile unsigned char *)0xfffe4001;
85 wd33c93_init(mvme147_host, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
87 if (request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0, "MVME147 SCSI PORT", mvme147_intr))
89 if (request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0, "MVME147 SCSI DMA", mvme147_intr))
91 #if 0 /* Disabled; causes problems booting */
92 m147_pcc->scsi_interrupt = 0x10; /* Assert SCSI bus reset */
94 m147_pcc->scsi_interrupt = 0x00; /* Negate SCSI bus reset */
96 m147_pcc->scsi_interrupt = 0x40; /* Clear bus reset interrupt */
98 m147_pcc->scsi_interrupt = 0x09; /* Enable interrupt */
100 m147_pcc->dma_cntrl = 0x00; /* ensure DMA is stopped */
101 m147_pcc->dma_intr = 0x89; /* Ack and enable ints */
106 free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
109 scsi_unregister(mvme147_host);
118 static Scsi_Host_Template driver_template = MVME147_SCSI;
120 #include "scsi_module.c"
122 int mvme147_release(struct Scsi_Host *instance)
125 /* XXX Make sure DMA is stopped! */
127 free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr);
128 free_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr);