From 35e9a9f93994d7f7d12afa41169c7ba05513721b Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Mon, 20 Apr 2015 22:42:24 -0500 Subject: [PATCH 1/5] SCSI: add 1024 max sectors black list flag This works around a issue with qnap iscsi targets not handling large IOs very well. The target returns: VPD INQUIRY: Block limits page (SBC) Maximum compare and write length: 1 blocks Optimal transfer length granularity: 1 blocks Maximum transfer length: 4294967295 blocks Optimal transfer length: 4294967295 blocks Maximum prefetch, xdread, xdwrite transfer length: 0 blocks Maximum unmap LBA count: 8388607 Maximum unmap block descriptor count: 1 Optimal unmap granularity: 16383 Unmap granularity alignment valid: 0 Unmap granularity alignment: 0 Maximum write same length: 0xffffffff blocks Maximum atomic transfer length: 0 Atomic alignment: 0 Atomic transfer length granularity: 0 and it is *sometimes* able to handle at least one IO of size up to 8 MB. We have seen in traces where it will sometimes work, but other times it looks like it fails and it looks like it returns failures if we send multiple large IOs sometimes. Also it looks like it can return 2 different errors. It will sometimes send iscsi reject errors indicating out of resources or it will send invalid cdb illegal requests check conditions. And then when it sends iscsi rejects it does not seem to handle retries when there are command sequence holes, so I could not just add code to try and gracefully handle that error code. The problem is that we do not have a good contact for the company, so we are not able to determine under what conditions it returns which error and why it sometimes works. So, this patch just adds a new black list flag to set targets like this to the old max safe sectors of 1024. The max_hw_sectors changes added in 3.19 caused this regression, so I also ccing stable. Reported-by: Christian Hesse Signed-off-by: Mike Christie Cc: stable@vger.kernel.org Reviewed-by: Christoph Hellwig Signed-off-by: James Bottomley --- drivers/scsi/scsi_devinfo.c | 1 + drivers/scsi/scsi_scan.c | 6 ++++++ include/scsi/scsi_devinfo.h | 1 + 3 files changed, 8 insertions(+) diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index 262ab837a704..9f77d23239a2 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -226,6 +226,7 @@ static struct { {"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN}, {"Promise", "VTrak E610f", NULL, BLIST_SPARSELUN | BLIST_NO_RSOC}, {"Promise", "", NULL, BLIST_SPARSELUN}, + {"QNAP", "iSCSI Storage", NULL, BLIST_MAX_1024}, {"QUANTUM", "XP34301", "1071", BLIST_NOTQ}, {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN}, {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN}, diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 60aae01caa89..6efab1c455e1 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -897,6 +897,12 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, */ if (*bflags & BLIST_MAX_512) blk_queue_max_hw_sectors(sdev->request_queue, 512); + /* + * Max 1024 sector transfer length for targets that report incorrect + * max/optimal lengths and relied on the old block layer safe default + */ + else if (*bflags & BLIST_MAX_1024) + blk_queue_max_hw_sectors(sdev->request_queue, 1024); /* * Some devices may not want to have a start command automatically diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h index 183eaab7c380..96e3f56519e7 100644 --- a/include/scsi/scsi_devinfo.h +++ b/include/scsi/scsi_devinfo.h @@ -36,5 +36,6 @@ for sequential scan */ #define BLIST_TRY_VPD_PAGES 0x10000000 /* Attempt to read VPD pages */ #define BLIST_NO_RSOC 0x20000000 /* don't try to issue RSOC */ +#define BLIST_MAX_1024 0x40000000 /* maximum 1024 sector cdb length */ #endif From 8c08a6215a432a8f3629da0e8ccfd534ffa480f5 Mon Sep 17 00:00:00 2001 From: Ondrej Zary Date: Tue, 21 Apr 2015 23:27:50 +0200 Subject: [PATCH 2/5] aha1542: Allocate memory before taking a lock The driver currently calls kmalloc with GFP_KERNEL while holding a lock. Fix it by doing the allocation earlier, before taking the lock. Tested on AHA-1542B. Signed-off-by: Ondrej Zary Signed-off-by: James Bottomley --- drivers/scsi/aha1542.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/scsi/aha1542.c b/drivers/scsi/aha1542.c index ec432763a29a..b95d2779f467 100644 --- a/drivers/scsi/aha1542.c +++ b/drivers/scsi/aha1542.c @@ -375,9 +375,10 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd) u8 lun = cmd->device->lun; unsigned long flags; int bufflen = scsi_bufflen(cmd); - int mbo; + int mbo, sg_count; struct mailbox *mb = aha1542->mb; struct ccb *ccb = aha1542->ccb; + struct chain *cptr; if (*cmd->cmnd == REQUEST_SENSE) { /* Don't do the command - we have the sense data already */ @@ -397,6 +398,13 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd) print_hex_dump_bytes("command: ", DUMP_PREFIX_NONE, cmd->cmnd, cmd->cmd_len); } #endif + if (bufflen) { /* allocate memory before taking host_lock */ + sg_count = scsi_sg_count(cmd); + cptr = kmalloc(sizeof(*cptr) * sg_count, GFP_KERNEL | GFP_DMA); + if (!cptr) + return SCSI_MLQUEUE_HOST_BUSY; + } + /* Use the outgoing mailboxes in a round-robin fashion, because this is how the host adapter will scan for them */ @@ -441,19 +449,10 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd) if (bufflen) { struct scatterlist *sg; - struct chain *cptr; - int i, sg_count = scsi_sg_count(cmd); + int i; ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */ - cmd->host_scribble = kmalloc(sizeof(*cptr)*sg_count, - GFP_KERNEL | GFP_DMA); - cptr = (struct chain *) cmd->host_scribble; - if (cptr == NULL) { - /* free the claimed mailbox slot */ - aha1542->int_cmds[mbo] = NULL; - spin_unlock_irqrestore(sh->host_lock, flags); - return SCSI_MLQUEUE_HOST_BUSY; - } + cmd->host_scribble = (void *)cptr; scsi_for_each_sg(cmd, sg, sg_count, i) { any2scsi(cptr[i].dataptr, isa_page_to_bus(sg_page(sg)) + sg->offset); From 579d69bc1fd56d5af5761969aa529d1d1c188300 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 23 Apr 2015 09:48:49 +0200 Subject: [PATCH 3/5] 3w-sas: fix command completion race The 3w-sas driver needs to tear down the dma mappings before returning the command to the midlayer, as there is no guarantee the sglist and count are valid after that point. Also remove the dma mapping helpers which have another inherent race due to the request_id index. Signed-off-by: Christoph Hellwig Reported-by: Torsten Luettgert Tested-by: Bernd Kardatzki Cc: stable@vger.kernel.org Acked-by: Adam Radford Signed-off-by: James Bottomley --- drivers/scsi/3w-sas.c | 50 +++++++++---------------------------------- drivers/scsi/3w-sas.h | 4 ---- 2 files changed, 10 insertions(+), 44 deletions(-) diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c index 2361772d5909..f8374850f714 100644 --- a/drivers/scsi/3w-sas.c +++ b/drivers/scsi/3w-sas.c @@ -290,26 +290,6 @@ static int twl_post_command_packet(TW_Device_Extension *tw_dev, int request_id) return 0; } /* End twl_post_command_packet() */ -/* This function will perform a pci-dma mapping for a scatter gather list */ -static int twl_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id) -{ - int use_sg; - struct scsi_cmnd *cmd = tw_dev->srb[request_id]; - - use_sg = scsi_dma_map(cmd); - if (!use_sg) - return 0; - else if (use_sg < 0) { - TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Failed to map scatter gather list"); - return 0; - } - - cmd->SCp.phase = TW_PHASE_SGLIST; - cmd->SCp.have_data_in = use_sg; - - return use_sg; -} /* End twl_map_scsi_sg_data() */ - /* This function hands scsi cdb's to the firmware */ static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry_ISO *sglistarg) { @@ -357,8 +337,8 @@ static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, if (!sglistarg) { /* Map sglist from scsi layer to cmd packet */ if (scsi_sg_count(srb)) { - sg_count = twl_map_scsi_sg_data(tw_dev, request_id); - if (sg_count == 0) + sg_count = scsi_dma_map(srb); + if (sg_count <= 0) goto out; scsi_for_each_sg(srb, sg, sg_count, i) { @@ -1102,15 +1082,6 @@ out: return retval; } /* End twl_initialize_device_extension() */ -/* This function will perform a pci-dma unmap */ -static void twl_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id) -{ - struct scsi_cmnd *cmd = tw_dev->srb[request_id]; - - if (cmd->SCp.phase == TW_PHASE_SGLIST) - scsi_dma_unmap(cmd); -} /* End twl_unmap_scsi_data() */ - /* This function will handle attention interrupts */ static int twl_handle_attention_interrupt(TW_Device_Extension *tw_dev) { @@ -1251,11 +1222,11 @@ static irqreturn_t twl_interrupt(int irq, void *dev_instance) } /* Now complete the io */ + scsi_dma_unmap(cmd); + cmd->scsi_done(cmd); tw_dev->state[request_id] = TW_S_COMPLETED; twl_free_request_id(tw_dev, request_id); tw_dev->posted_request_count--; - tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); - twl_unmap_scsi_data(tw_dev, request_id); } /* Check for another response interrupt */ @@ -1400,10 +1371,12 @@ static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_res if ((tw_dev->state[i] != TW_S_FINISHED) && (tw_dev->state[i] != TW_S_INITIAL) && (tw_dev->state[i] != TW_S_COMPLETED)) { - if (tw_dev->srb[i]) { - tw_dev->srb[i]->result = (DID_RESET << 16); - tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); - twl_unmap_scsi_data(tw_dev, i); + struct scsi_cmnd *cmd = tw_dev->srb[i]; + + if (cmd) { + cmd->result = (DID_RESET << 16); + scsi_dma_unmap(cmd); + cmd->scsi_done(cmd); } } } @@ -1507,9 +1480,6 @@ static int twl_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_ /* Save the scsi command for use by the ISR */ tw_dev->srb[request_id] = SCpnt; - /* Initialize phase to zero */ - SCpnt->SCp.phase = TW_PHASE_INITIAL; - retval = twl_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); if (retval) { tw_dev->state[request_id] = TW_S_COMPLETED; diff --git a/drivers/scsi/3w-sas.h b/drivers/scsi/3w-sas.h index d474892701d4..fec6449c7595 100644 --- a/drivers/scsi/3w-sas.h +++ b/drivers/scsi/3w-sas.h @@ -103,10 +103,6 @@ static char *twl_aen_severity_table[] = #define TW_CURRENT_DRIVER_BUILD 0 #define TW_CURRENT_DRIVER_BRANCH 0 -/* Phase defines */ -#define TW_PHASE_INITIAL 0 -#define TW_PHASE_SGLIST 2 - /* Misc defines */ #define TW_SECTOR_SIZE 512 #define TW_MAX_UNITS 32 From 9cd9554615cba14f0877cc9972a6537ad2bdde61 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 23 Apr 2015 09:48:50 +0200 Subject: [PATCH 4/5] 3w-xxxx: fix command completion race The 3w-xxxx driver needs to tear down the dma mappings before returning the command to the midlayer, as there is no guarantee the sglist and count are valid after that point. Also remove the dma mapping helpers which have another inherent race due to the request_id index. Signed-off-by: Christoph Hellwig Cc: stable@vger.kernel.org Acked-by: Adam Radford Signed-off-by: James Bottomley --- drivers/scsi/3w-xxxx.c | 42 ++++++------------------------------------ drivers/scsi/3w-xxxx.h | 5 ----- 2 files changed, 6 insertions(+), 41 deletions(-) diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c index c75f2048319f..2940bd769936 100644 --- a/drivers/scsi/3w-xxxx.c +++ b/drivers/scsi/3w-xxxx.c @@ -1271,32 +1271,6 @@ static int tw_initialize_device_extension(TW_Device_Extension *tw_dev) return 0; } /* End tw_initialize_device_extension() */ -static int tw_map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) -{ - int use_sg; - - dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data()\n"); - - use_sg = scsi_dma_map(cmd); - if (use_sg < 0) { - printk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data(): pci_map_sg() failed.\n"); - return 0; - } - - cmd->SCp.phase = TW_PHASE_SGLIST; - cmd->SCp.have_data_in = use_sg; - - return use_sg; -} /* End tw_map_scsi_sg_data() */ - -static void tw_unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) -{ - dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n"); - - if (cmd->SCp.phase == TW_PHASE_SGLIST) - scsi_dma_unmap(cmd); -} /* End tw_unmap_scsi_data() */ - /* This function will reset a device extension */ static int tw_reset_device_extension(TW_Device_Extension *tw_dev) { @@ -1319,8 +1293,8 @@ static int tw_reset_device_extension(TW_Device_Extension *tw_dev) srb = tw_dev->srb[i]; if (srb != NULL) { srb->result = (DID_RESET << 16); - tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); - tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[i]); + scsi_dma_unmap(srb); + srb->scsi_done(srb); } } } @@ -1767,8 +1741,8 @@ static int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id) command_packet->byte8.io.lba = lba; command_packet->byte6.block_count = num_sectors; - use_sg = tw_map_scsi_sg_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]); - if (!use_sg) + use_sg = scsi_dma_map(srb); + if (use_sg <= 0) return 1; scsi_for_each_sg(tw_dev->srb[request_id], sg, use_sg, i) { @@ -1955,9 +1929,6 @@ static int tw_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_c /* Save the scsi command for use by the ISR */ tw_dev->srb[request_id] = SCpnt; - /* Initialize phase to zero */ - SCpnt->SCp.phase = TW_PHASE_INITIAL; - switch (*command) { case READ_10: case READ_6: @@ -2185,12 +2156,11 @@ static irqreturn_t tw_interrupt(int irq, void *dev_instance) /* Now complete the io */ if ((error != TW_ISR_DONT_COMPLETE)) { + scsi_dma_unmap(tw_dev->srb[request_id]); + tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); tw_dev->state[request_id] = TW_S_COMPLETED; tw_state_request_finish(tw_dev, request_id); tw_dev->posted_request_count--; - tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); - - tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]); } } diff --git a/drivers/scsi/3w-xxxx.h b/drivers/scsi/3w-xxxx.h index 29b0b84ed69e..6f65e663d393 100644 --- a/drivers/scsi/3w-xxxx.h +++ b/drivers/scsi/3w-xxxx.h @@ -195,11 +195,6 @@ static unsigned char tw_sense_table[][4] = #define TW_AEN_SMART_FAIL 0x000F #define TW_AEN_SBUF_FAIL 0x0024 -/* Phase defines */ -#define TW_PHASE_INITIAL 0 -#define TW_PHASE_SINGLE 1 -#define TW_PHASE_SGLIST 2 - /* Misc defines */ #define TW_ALIGNMENT_6000 64 /* 64 bytes */ #define TW_ALIGNMENT_7000 4 /* 4 bytes */ From 118c855b5623f3e2e6204f02623d88c09e0c34de Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 23 Apr 2015 09:48:51 +0200 Subject: [PATCH 5/5] 3w-9xxx: fix command completion race The 3w-9xxx driver needs to tear down the dma mappings before returning the command to the midlayer, as there is no guarantee the sglist and count are valid after that point. Also remove the dma mapping helpers which have another inherent race due to the request_id index. Signed-off-by: Christoph Hellwig Cc: stable@vger.kernel.org Acked-by: Adam Radford Signed-off-by: James Bottomley --- drivers/scsi/3w-9xxx.c | 57 ++++++++++-------------------------------- drivers/scsi/3w-9xxx.h | 5 ---- 2 files changed, 13 insertions(+), 49 deletions(-) diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c index 7600639db4c4..add419d6ff34 100644 --- a/drivers/scsi/3w-9xxx.c +++ b/drivers/scsi/3w-9xxx.c @@ -149,7 +149,6 @@ static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset); static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg); static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id); static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code); -static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id); /* Functions */ @@ -1340,11 +1339,11 @@ static irqreturn_t twa_interrupt(int irq, void *dev_instance) } /* Now complete the io */ + scsi_dma_unmap(cmd); + cmd->scsi_done(cmd); tw_dev->state[request_id] = TW_S_COMPLETED; twa_free_request_id(tw_dev, request_id); tw_dev->posted_request_count--; - tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); - twa_unmap_scsi_data(tw_dev, request_id); } /* Check for valid status after each drain */ @@ -1402,26 +1401,6 @@ static void twa_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_comm } } /* End twa_load_sgl() */ -/* This function will perform a pci-dma mapping for a scatter gather list */ -static int twa_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id) -{ - int use_sg; - struct scsi_cmnd *cmd = tw_dev->srb[request_id]; - - use_sg = scsi_dma_map(cmd); - if (!use_sg) - return 0; - else if (use_sg < 0) { - TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to map scatter gather list"); - return 0; - } - - cmd->SCp.phase = TW_PHASE_SGLIST; - cmd->SCp.have_data_in = use_sg; - - return use_sg; -} /* End twa_map_scsi_sg_data() */ - /* This function will poll for a response interrupt of a request */ static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds) { @@ -1600,9 +1579,11 @@ static int twa_reset_device_extension(TW_Device_Extension *tw_dev) (tw_dev->state[i] != TW_S_INITIAL) && (tw_dev->state[i] != TW_S_COMPLETED)) { if (tw_dev->srb[i]) { - tw_dev->srb[i]->result = (DID_RESET << 16); - tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); - twa_unmap_scsi_data(tw_dev, i); + struct scsi_cmnd *cmd = tw_dev->srb[i]; + + cmd->result = (DID_RESET << 16); + scsi_dma_unmap(cmd); + cmd->scsi_done(cmd); } } } @@ -1781,21 +1762,18 @@ static int twa_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_ /* Save the scsi command for use by the ISR */ tw_dev->srb[request_id] = SCpnt; - /* Initialize phase to zero */ - SCpnt->SCp.phase = TW_PHASE_INITIAL; - retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); switch (retval) { case SCSI_MLQUEUE_HOST_BUSY: + scsi_dma_unmap(SCpnt); twa_free_request_id(tw_dev, request_id); - twa_unmap_scsi_data(tw_dev, request_id); break; case 1: + SCpnt->result = (DID_ERROR << 16); + scsi_dma_unmap(SCpnt); + done(SCpnt); tw_dev->state[request_id] = TW_S_COMPLETED; twa_free_request_id(tw_dev, request_id); - twa_unmap_scsi_data(tw_dev, request_id); - SCpnt->result = (DID_ERROR << 16); - done(SCpnt); retval = 0; } out: @@ -1863,8 +1841,8 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH); } else { - sg_count = twa_map_scsi_sg_data(tw_dev, request_id); - if (sg_count == 0) + sg_count = scsi_dma_map(srb); + if (sg_count < 0) goto out; scsi_for_each_sg(srb, sg, sg_count, i) { @@ -1979,15 +1957,6 @@ static char *twa_string_lookup(twa_message_type *table, unsigned int code) return(table[index].text); } /* End twa_string_lookup() */ -/* This function will perform a pci-dma unmap */ -static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id) -{ - struct scsi_cmnd *cmd = tw_dev->srb[request_id]; - - if (cmd->SCp.phase == TW_PHASE_SGLIST) - scsi_dma_unmap(cmd); -} /* End twa_unmap_scsi_data() */ - /* This function gets called when a disk is coming on-line */ static int twa_slave_configure(struct scsi_device *sdev) { diff --git a/drivers/scsi/3w-9xxx.h b/drivers/scsi/3w-9xxx.h index 040f7214e5b7..0fdc83cfa0e1 100644 --- a/drivers/scsi/3w-9xxx.h +++ b/drivers/scsi/3w-9xxx.h @@ -324,11 +324,6 @@ static twa_message_type twa_error_table[] = { #define TW_CURRENT_DRIVER_BUILD 0 #define TW_CURRENT_DRIVER_BRANCH 0 -/* Phase defines */ -#define TW_PHASE_INITIAL 0 -#define TW_PHASE_SINGLE 1 -#define TW_PHASE_SGLIST 2 - /* Misc defines */ #define TW_9550SX_DRAIN_COMPLETED 0xFFFF #define TW_SECTOR_SIZE 512