1#include <linux/types.h> 2#include <linux/mm.h> 3#include <linux/blk.h> 4#include <linux/sched.h> 5#include <linux/version.h> 6 7#include <asm/page.h> 8#include <asm/pgtable.h> 9#include <asm/mvme147hw.h> 10#include <asm/irq.h> 11 12#include "scsi.h" 13#include "hosts.h" 14#include "wd33c93.h" 15#include "mvme147.h" 16 17#include<linux/stat.h> 18 19#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata)) 20 21static struct Scsi_Host *mvme147_host = NULL; 22 23static void mvme147_intr (int irq, void *dummy, struct pt_regs *fp) 24{ 25 if (irq == MVME147_IRQ_SCSI_PORT) 26 wd33c93_intr (mvme147_host); 27 else 28 m147_pcc->dma_intr = 0x89; /* Ack and enable ints */ 29} 30 31static int dma_setup (Scsi_Cmnd *cmd, int dir_in) 32{ 33 unsigned char flags = 0x01; 34 unsigned long addr = virt_to_bus(cmd->SCp.ptr); 35 36 /* setup dma direction */ 37 if (!dir_in) 38 flags |= 0x04; 39 40 /* remember direction */ 41 HDATA(mvme147_host)->dma_dir = dir_in; 42 43 if (dir_in) 44 /* invalidate any cache */ 45 cache_clear (addr, cmd->SCp.this_residual); 46 else 47 /* push any dirty cache */ 48 cache_push (addr, cmd->SCp.this_residual); 49 50 /* start DMA */ 51 m147_pcc->dma_bcr = cmd->SCp.this_residual | (1<<24); 52 m147_pcc->dma_dadr = addr; 53 m147_pcc->dma_cntrl = flags; 54 55 /* return success */ 56 return 0; 57} 58 59static void dma_stop (struct Scsi_Host *instance, Scsi_Cmnd *SCpnt, 60 int status) 61{ 62 m147_pcc->dma_cntrl = 0; 63} 64 65int mvme147_detect(Scsi_Host_Template *tpnt) 66{ 67 static unsigned char called = 0; 68 wd33c93_regs regs; 69 70 if (!MACH_IS_MVME147 || called) 71 return 0; 72 called++; 73 74 tpnt->proc_name = "MVME147"; 75 tpnt->proc_info = &wd33c93_proc_info; 76 77 mvme147_host = scsi_register (tpnt, sizeof(struct WD33C93_hostdata)); 78 if (!mvme147_host) 79 goto err_out; 80 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); 86 87 if (request_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr, 0, "MVME147 SCSI PORT", mvme147_intr)) 88 goto err_unregister; 89 if (request_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr, 0, "MVME147 SCSI DMA", mvme147_intr)) 90 goto err_free_irq; 91 m147_pcc->scsi_interrupt = 0x09; /* Enable interrupt */ 92 93 m147_pcc->dma_cntrl = 0x00; /* ensure DMA is stopped */ 94 m147_pcc->dma_intr = 0x89; /* Ack and enable ints */ 95 96 return 1; 97 98 err_free_irq: 99 free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr); 100 err_unregister: 101 wd33c93_release(); 102 scsi_unregister(mvme147_host); 103 err_out: 104 return 0; 105} 106 107#define HOSTS_C 108 109#include "mvme147.h" 110 111static Scsi_Host_Template driver_template = MVME147_SCSI; 112 113#include "scsi_module.c" 114 115int mvme147_release(struct Scsi_Host *instance) 116{ 117#ifdef MODULE 118 wd33c93_release(); 119 free_irq(MVME147_IRQ_SCSI_PORT, mvme147_intr); 120 free_irq(MVME147_IRQ_SCSI_DMA, mvme147_intr); 121#endif 122 return 1; 123} 124