diff options
Diffstat (limited to 'drivers/scsi/atari_NCR5380.c')
| -rw-r--r-- | drivers/scsi/atari_NCR5380.c | 62 |
1 files changed, 9 insertions, 53 deletions
diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c index 389825ba5d96..c669098e34e1 100644 --- a/drivers/scsi/atari_NCR5380.c +++ b/drivers/scsi/atari_NCR5380.c @@ -112,15 +112,9 @@ * specific implementation of the NCR5380 * * Either real DMA *or* pseudo DMA may be implemented - * REAL functions : - * NCR5380_REAL_DMA should be defined if real DMA is to be used. * Note that the DMA setup functions should return the number of bytes * that they were able to program the controller for. * - * Also note that generic i386/PC versions of these macros are - * available as NCR5380_i386_dma_write_setup, - * NCR5380_i386_dma_read_setup, and NCR5380_i386_dma_residual. - * * NCR5380_dma_write_setup(instance, src, count) - initialize * NCR5380_dma_read_setup(instance, dst, count) - initialize * NCR5380_dma_residual(instance); - residual count @@ -586,9 +580,6 @@ static void prepare_info(struct Scsi_Host *instance) #ifdef DIFFERENTIAL "DIFFERENTIAL " #endif -#ifdef REAL_DMA - "REAL_DMA " -#endif #ifdef PARITY "PARITY " #endif @@ -629,9 +620,8 @@ static int __init NCR5380_init(struct Scsi_Host *instance, int flags) #ifdef SUPPORT_TAGS init_tags(hostdata); #endif -#if defined (REAL_DMA) hostdata->dma_len = 0; -#endif + spin_lock_init(&hostdata->lock); hostdata->connected = NULL; hostdata->sensing = NULL; @@ -974,11 +964,7 @@ static void NCR5380_main(struct work_struct *work) #endif } } - if (hostdata->connected -#ifdef REAL_DMA - && !hostdata->dma_len -#endif - ) { + if (hostdata->connected && !hostdata->dma_len) { dsprintk(NDEBUG_MAIN, instance, "main: performing information transfer\n"); NCR5380_information_transfer(instance); done = 0; @@ -990,7 +976,6 @@ static void NCR5380_main(struct work_struct *work) } -#ifdef REAL_DMA /* * Function : void NCR5380_dma_complete (struct Scsi_Host *instance) * @@ -1071,7 +1056,6 @@ static void NCR5380_dma_complete(struct Scsi_Host *instance) } } } -#endif /* REAL_DMA */ /** @@ -1126,7 +1110,6 @@ static irqreturn_t NCR5380_intr(int irq, void *dev_id) dsprintk(NDEBUG_INTR, instance, "IRQ %d, BASR 0x%02x, SR 0x%02x, MR 0x%02x\n", irq, basr, sr, mr); -#if defined(REAL_DMA) if ((mr & MR_DMA_MODE) || (mr & MR_MONITOR_BSY)) { /* Probably End of DMA, Phase Mismatch or Loss of BSY. * We ack IRQ after clearing Mode Register. Workarounds @@ -1142,9 +1125,7 @@ static irqreturn_t NCR5380_intr(int irq, void *dev_id) NCR5380_write(MODE_REG, MR_BASE); NCR5380_read(RESET_PARITY_INTERRUPT_REG); } - } else -#endif /* REAL_DMA */ - if ((NCR5380_read(CURRENT_SCSI_DATA_REG) & hostdata->id_mask) && + } else if ((NCR5380_read(CURRENT_SCSI_DATA_REG) & hostdata->id_mask) && (sr & (SR_SEL | SR_IO | SR_BSY | SR_RST)) == (SR_SEL | SR_IO)) { /* Probably reselected */ NCR5380_write(SELECT_ENABLE_REG, 0); @@ -1710,7 +1691,7 @@ timeout: return -1; } -#if defined(REAL_DMA) + /* * Function : int NCR5380_transfer_dma (struct Scsi_Host *instance, * unsigned char *phase, int *count, unsigned char **data) @@ -1819,7 +1800,6 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, return 0; } -#endif /* defined(REAL_DMA) */ /* * Function : NCR5380_information_transfer (struct Scsi_Host *instance) @@ -1866,7 +1846,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) } #if defined(CONFIG_SUN3) if (phase == PHASE_CMDOUT) { -#if defined(REAL_DMA) void *d; unsigned long count; @@ -1885,7 +1864,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) sun3_dma_setup_done = cmd; } } -#endif #ifdef SUN3_SCSI_VME dregs->csr |= CSR_INTR; #endif @@ -1943,12 +1921,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) * in an unconditional loop. */ - /* ++roman: I suggest, this should be - * #if def(REAL_DMA) - * instead of leaving REAL_DMA out. - */ - -#if defined(REAL_DMA) #if !defined(CONFIG_SUN3) transfersize = 0; if (!cmd->device->borken) @@ -1972,21 +1944,9 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) do_abort(instance); cmd->result = DID_ERROR << 16; /* XXX - need to source or sink data here, as appropriate */ - } else { -#ifdef REAL_DMA - /* ++roman: When using real DMA, - * information_transfer() should return after - * starting DMA since it has nothing more to - * do. - */ + } else return; -#else - cmd->SCp.this_residual -= transfersize - len; -#endif - } - } else -#endif /* defined(REAL_DMA) */ - { + } else { /* Break up transfer into 3 ms chunks, * presuming 6 accesses per handshake. */ @@ -1997,7 +1957,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) (unsigned char **)&cmd->SCp.ptr); cmd->SCp.this_residual -= transfersize - len; } -#if defined(CONFIG_SUN3) && defined(REAL_DMA) +#if defined(CONFIG_SUN3) /* if we had intended to dma that command clear it */ if (sun3_dma_setup_done == cmd) sun3_dma_setup_done = NULL; @@ -2305,7 +2265,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance) return; } -#if defined(CONFIG_SUN3) && defined(REAL_DMA) +#if defined(CONFIG_SUN3) /* acknowledge toggle to MSGIN */ NCR5380_write(TARGET_COMMAND_REG, PHASE_SR_TO_TCR(PHASE_MSGIN)); @@ -2392,7 +2352,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance) return; } -#if defined(CONFIG_SUN3) && defined(REAL_DMA) +#if defined(CONFIG_SUN3) /* engage dma setup for the command we just saw */ { void *d; @@ -2555,9 +2515,7 @@ static int NCR5380_abort(struct scsi_cmnd *cmd) if (hostdata->connected == cmd) { dsprintk(NDEBUG_ABORT, instance, "abort: cmd %p is connected\n", cmd); hostdata->connected = NULL; -#ifdef REAL_DMA hostdata->dma_len = 0; -#endif if (do_abort(instance)) { set_host_byte(cmd, DID_ERROR); complete_cmd(instance, cmd); @@ -2664,9 +2622,7 @@ static int NCR5380_bus_reset(struct scsi_cmnd *cmd) #endif for (i = 0; i < 8; ++i) hostdata->busy[i] = 0; -#ifdef REAL_DMA hostdata->dma_len = 0; -#endif queue_work(hostdata->work_q, &hostdata->main_task); maybe_release_dma_irq(instance); |
