diff options
Diffstat (limited to 'drivers/scsi/atari_scsi.c')
| -rw-r--r-- | drivers/scsi/atari_scsi.c | 52 |
1 files changed, 28 insertions, 24 deletions
diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c index a75feebe6ad6..85055677666c 100644 --- a/drivers/scsi/atari_scsi.c +++ b/drivers/scsi/atari_scsi.c @@ -376,15 +376,11 @@ static int falcon_get_lock(struct Scsi_Host *instance) if (IS_A_TT()) return 1; - if (stdma_is_locked_by(scsi_falcon_intr) && - instance->hostt->can_queue > 1) + if (stdma_is_locked_by(scsi_falcon_intr)) return 1; - if (in_interrupt()) - return stdma_try_lock(scsi_falcon_intr, instance); - - stdma_lock(scsi_falcon_intr, instance); - return 1; + /* stdma_lock() may sleep which means it can't be used here */ + return stdma_try_lock(scsi_falcon_intr, instance); } #ifndef MODULE @@ -542,7 +538,7 @@ static int falcon_classify_cmd(struct scsi_cmnd *cmd) static int atari_scsi_dma_xfer_len(struct NCR5380_hostdata *hostdata, struct scsi_cmnd *cmd) { - int wanted_len = cmd->SCp.this_residual; + int wanted_len = NCR5380_to_ncmd(cmd)->this_residual; int possible_len, limit; if (wanted_len < DMA_MIN_SIZE) @@ -614,7 +610,7 @@ static int atari_scsi_dma_xfer_len(struct NCR5380_hostdata *hostdata, } /* Last step: apply the hard limit on DMA transfers */ - limit = (atari_dma_buffer && !STRAM_ADDR(virt_to_phys(cmd->SCp.ptr))) ? + limit = (atari_dma_buffer && !STRAM_ADDR(virt_to_phys(NCR5380_to_ncmd(cmd)->ptr))) ? STRAM_BUFFER_SIZE : 255*512; if (possible_len > limit) possible_len = limit; @@ -671,7 +667,7 @@ static void atari_scsi_falcon_reg_write(unsigned int reg, u8 value) #include "NCR5380.c" -static int atari_scsi_bus_reset(struct scsi_cmnd *cmd) +static int atari_scsi_host_reset(struct scsi_cmnd *cmd) { int rv; unsigned long flags; @@ -688,7 +684,7 @@ static int atari_scsi_bus_reset(struct scsi_cmnd *cmd) atari_dma_orig_addr = NULL; } - rv = NCR5380_bus_reset(cmd); + rv = NCR5380_host_reset(cmd); /* The 5380 raises its IRQ line while _RST is active but the ST DMA * "lock" has been released so this interrupt may end up handled by @@ -711,11 +707,11 @@ static struct scsi_host_template atari_scsi_template = { .info = atari_scsi_info, .queuecommand = atari_scsi_queue_command, .eh_abort_handler = atari_scsi_abort, - .eh_bus_reset_handler = atari_scsi_bus_reset, + .eh_host_reset_handler = atari_scsi_host_reset, .this_id = 7, .cmd_per_lun = 2, - .use_clustering = DISABLE_CLUSTERING, - .cmd_size = NCR5380_CMD_SIZE, + .dma_boundary = PAGE_SIZE - 1, + .cmd_size = sizeof(struct NCR5380_cmd), }; static int __init atari_scsi_probe(struct platform_device *pdev) @@ -742,7 +738,7 @@ static int __init atari_scsi_probe(struct platform_device *pdev) atari_scsi_template.sg_tablesize = SG_ALL; } else { atari_scsi_template.can_queue = 1; - atari_scsi_template.sg_tablesize = SG_NONE; + atari_scsi_template.sg_tablesize = 1; } if (setup_can_queue > 0) @@ -751,21 +747,23 @@ static int __init atari_scsi_probe(struct platform_device *pdev) if (setup_cmd_per_lun > 0) atari_scsi_template.cmd_per_lun = setup_cmd_per_lun; - /* Leave sg_tablesize at 0 on a Falcon! */ - if (ATARIHW_PRESENT(TT_SCSI) && setup_sg_tablesize >= 0) + /* Don't increase sg_tablesize on Falcon! */ + if (ATARIHW_PRESENT(TT_SCSI) && setup_sg_tablesize > 0) atari_scsi_template.sg_tablesize = setup_sg_tablesize; if (setup_hostid >= 0) { atari_scsi_template.this_id = setup_hostid & 7; - } else { + } else if (IS_REACHABLE(CONFIG_NVRAM)) { /* Test if a host id is set in the NVRam */ - if (ATARIHW_PRESENT(TT_CLK) && nvram_check_checksum()) { - unsigned char b = nvram_read_byte(16); + if (ATARIHW_PRESENT(TT_CLK)) { + unsigned char b; + loff_t offset = 16; + ssize_t count = nvram_read(&b, 1, &offset); /* Arbitration enabled? (for TOS) * If yes, use configured host ID */ - if (b & 0x80) + if ((count == 1) && (b & 0x80)) atari_scsi_template.this_id = b & 7; } } @@ -867,7 +865,7 @@ fail_alloc: return error; } -static int __exit atari_scsi_remove(struct platform_device *pdev) +static void __exit atari_scsi_remove(struct platform_device *pdev) { struct Scsi_Host *instance = platform_get_drvdata(pdev); @@ -878,10 +876,15 @@ static int __exit atari_scsi_remove(struct platform_device *pdev) scsi_host_put(instance); if (atari_dma_buffer) atari_stram_free(atari_dma_buffer); - return 0; } -static struct platform_driver atari_scsi_driver = { +/* + * atari_scsi_remove() lives in .exit.text. For drivers registered via + * module_platform_driver_probe() this is ok because they cannot get unbound at + * runtime. So mark the driver struct with __refdata to prevent modpost + * triggering a section mismatch warning. + */ +static struct platform_driver atari_scsi_driver __refdata = { .remove = __exit_p(atari_scsi_remove), .driver = { .name = DRV_MODULE_NAME, @@ -891,4 +894,5 @@ static struct platform_driver atari_scsi_driver = { module_platform_driver_probe(atari_scsi_driver, atari_scsi_probe); MODULE_ALIAS("platform:" DRV_MODULE_NAME); +MODULE_DESCRIPTION("Atari TT/Falcon NCR5380 SCSI driver"); MODULE_LICENSE("GPL"); |