int slm_init( void ) { if (register_chrdev( MAJOR_NR, "slm", &slm_fops )) { printk( KERN_ERR "Unable to get major %d for ACSI SLM\n", MAJOR_NR ); return -EBUSY; } if (!(SLMBuffer = atari_stram_alloc( SLM_BUFFER_SIZE, NULL, "SLM" ))) { printk( KERN_ERR "Unable to get SLM ST-Ram buffer.\n" ); unregister_chrdev( MAJOR_NR, "slm" ); return -ENOMEM; } BufferP = SLMBuffer; SLMState = IDLE; return 0; }
int slm_init( void ) { if (devfs_register_chrdev( MAJOR_NR, "slm", &slm_fops )) { printk( KERN_ERR "Unable to get major %d for ACSI SLM\n", MAJOR_NR ); return -EBUSY; } if (!(SLMBuffer = atari_stram_alloc( SLM_BUFFER_SIZE, "SLM" ))) { printk( KERN_ERR "Unable to get SLM ST-Ram buffer.\n" ); devfs_unregister_chrdev( MAJOR_NR, "slm" ); return -ENOMEM; } BufferP = SLMBuffer; SLMState = IDLE; devfs_handle = devfs_mk_dir (NULL, "slm", NULL); devfs_register_series (devfs_handle, "%u", MAX_SLM, DEVFS_FL_DEFAULT, MAJOR_NR, 0, S_IFCHR | S_IRUSR | S_IWUSR, &slm_fops, NULL); return 0; }
int atari_scsi_detect (Scsi_Host_Template *host) { static int called = 0; struct Scsi_Host *instance; if (!MACH_IS_ATARI || (!ATARIHW_PRESENT(ST_SCSI) && !ATARIHW_PRESENT(TT_SCSI)) || called) return( 0 ); host->proc_name = "Atari"; atari_scsi_reg_read = IS_A_TT() ? atari_scsi_tt_reg_read : atari_scsi_falcon_reg_read; atari_scsi_reg_write = IS_A_TT() ? atari_scsi_tt_reg_write : atari_scsi_falcon_reg_write; /* setup variables */ host->can_queue = (setup_can_queue > 0) ? setup_can_queue : IS_A_TT() ? ATARI_TT_CAN_QUEUE : ATARI_FALCON_CAN_QUEUE; host->cmd_per_lun = (setup_cmd_per_lun > 0) ? setup_cmd_per_lun : IS_A_TT() ? ATARI_TT_CMD_PER_LUN : ATARI_FALCON_CMD_PER_LUN; /* Force sg_tablesize to 0 on a Falcon! */ host->sg_tablesize = !IS_A_TT() ? ATARI_FALCON_SG_TABLESIZE : (setup_sg_tablesize >= 0) ? setup_sg_tablesize : ATARI_TT_SG_TABLESIZE; if (setup_hostid >= 0) host->this_id = setup_hostid; else { /* use 7 as default */ host->this_id = 7; /* Test if a host id is set in the NVRam */ if (ATARIHW_PRESENT(TT_CLK) && nvram_check_checksum()) { unsigned char b = nvram_read_byte( 14 ); /* Arbitration enabled? (for TOS) If yes, use configured host ID */ if (b & 0x80) host->this_id = b & 7; } } #ifdef SUPPORT_TAGS if (setup_use_tagged_queuing < 0) setup_use_tagged_queuing = DEFAULT_USE_TAGGED_QUEUING; #endif #ifdef REAL_DMA /* If running on a Falcon and if there's TT-Ram (i.e., more than one * memory block, since there's always ST-Ram in a Falcon), then allocate a * STRAM_BUFFER_SIZE byte dribble buffer for transfers from/to alternative * Ram. */ if (MACH_IS_ATARI && ATARIHW_PRESENT(ST_SCSI) && !ATARIHW_PRESENT(EXTD_DMA) && m68k_num_memory > 1) { atari_dma_buffer = atari_stram_alloc(STRAM_BUFFER_SIZE, "SCSI"); if (!atari_dma_buffer) { printk( KERN_ERR "atari_scsi_detect: can't allocate ST-RAM " "double buffer\n" ); return( 0 ); } atari_dma_phys_buffer = virt_to_phys( atari_dma_buffer ); atari_dma_orig_addr = 0; } #endif instance = scsi_register (host, sizeof (struct NCR5380_hostdata)); if(instance == NULL) { atari_stram_free(atari_dma_buffer); atari_dma_buffer = 0; return 0; } atari_scsi_host = instance; /* Set irq to 0, to avoid that the mid-level code disables our interrupt * during queue_command calls. This is completely unnecessary, and even * worse causes bad problems on the Falcon, where the int is shared with * IDE and floppy! */ instance->irq = 0; #ifdef CONFIG_ATARI_SCSI_RESET_BOOT atari_scsi_reset_boot(); #endif NCR5380_init (instance, 0); if (IS_A_TT()) { /* This int is actually "pseudo-slow", i.e. it acts like a slow * interrupt after having cleared the pending flag for the DMA * interrupt. */ if (request_irq(IRQ_TT_MFP_SCSI, scsi_tt_intr, IRQ_TYPE_SLOW, "SCSI NCR5380", scsi_tt_intr)) { printk(KERN_ERR "atari_scsi_detect: cannot allocate irq %d, aborting",IRQ_TT_MFP_SCSI); scsi_unregister(atari_scsi_host); atari_stram_free(atari_dma_buffer); atari_dma_buffer = 0; return 0; } tt_mfp.active_edge |= 0x80; /* SCSI int on L->H */ #ifdef REAL_DMA tt_scsi_dma.dma_ctrl = 0; atari_dma_residual = 0; #ifdef CONFIG_TT_DMA_EMUL if (MACH_IS_HADES) { if (request_irq(IRQ_AUTO_2, hades_dma_emulator, IRQ_TYPE_PRIO, "Hades DMA emulator", hades_dma_emulator)) { printk(KERN_ERR "atari_scsi_detect: cannot allocate irq %d, aborting (MACH_IS_HADES)",IRQ_AUTO_2); free_irq(IRQ_TT_MFP_SCSI, scsi_tt_intr); scsi_unregister(atari_scsi_host); atari_stram_free(atari_dma_buffer); atari_dma_buffer = 0; return 0; } } #endif if (MACH_IS_MEDUSA || MACH_IS_HADES) { /* While the read overruns (described by Drew Eckhardt in * NCR5380.c) never happened on TTs, they do in fact on the Medusa * (This was the cause why SCSI didn't work right for so long * there.) Since handling the overruns slows down a bit, I turned * the #ifdef's into a runtime condition. * * In principle it should be sufficient to do max. 1 byte with * PIO, but there is another problem on the Medusa with the DMA * rest data register. So 'atari_read_overruns' is currently set * to 4 to avoid having transfers that aren't a multiple of 4. If * the rest data bug is fixed, this can be lowered to 1. */ atari_read_overruns = 4; } #endif /*REAL_DMA*/ } else { /* ! IS_A_TT */ /* Nothing to do for the interrupt: the ST-DMA is initialized * already by atari_init_INTS() */ #ifdef REAL_DMA atari_dma_residual = 0; atari_dma_active = 0; atari_dma_stram_mask = (ATARIHW_PRESENT(EXTD_DMA) ? 0x00000000 : 0xff000000); #endif } printk(KERN_INFO "scsi%d: options CAN_QUEUE=%d CMD_PER_LUN=%d SCAT-GAT=%d " #ifdef SUPPORT_TAGS "TAGGED-QUEUING=%s " #endif "HOSTID=%d", instance->host_no, instance->hostt->can_queue, instance->hostt->cmd_per_lun, instance->hostt->sg_tablesize, #ifdef SUPPORT_TAGS setup_use_tagged_queuing ? "yes" : "no", #endif instance->hostt->this_id ); NCR5380_print_options (instance); printk ("\n"); called = 1; return( 1 ); }