/* $OpenBSD: vsbic.c,v 1.7 2010/06/28 18:31:01 krw Exp $ */ /* * Copyright (c) 2008, 2009 Miodrag Vallat. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. And * I won't mind if you keep the disclaimer below. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * MVME327A SCSI and floppy controller driver * * This driver is currently limited to the SCSI part of the board, which * is messy enough already. */ /* This card lives in an A24/D16 world, but is A32/D32 capable */ #define __BUS_SPACE_RESTRICT_D16__ #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Channel packet structure */ struct vsbic_pkt { /* Command fields, read by firmware */ uint8_t cmd_cmd; uint8_t cmd_cmd_ctrl; uint8_t cmd_device; #define VSBIC_DEVICE_FLOPPY 0x01 #define VSBIC_DEVICE_SCSI 0x05 #define VSBIC_DEVICE_HOST 0x0f uint8_t cmd_unit; #define VSBIC_UNIT(tgt,lun) (((tgt) << 4) | (lun)) uint16_t reserved; uint8_t cmd_addrmod; uint8_t cmd_buswidth; uint32_t cmd_addr1; uint32_t cmd_addr2; #define cmd_link cmd_addr2 /* used for free pkt linking */ uint32_t cmd_xfer_count; uint16_t cmd_sg_count; uint16_t cmd_parm1; uint16_t cmd_parm2; uint16_t cmd_parm3; /* Status fields, written by firmware */ uint8_t sts_error; uint8_t sts_recovered; /* error recovered by fw */ uint16_t sts_status; #define sts_sense sts_status uint8_t sts_retries; /* # of retries performed */ uint8_t reserved2; uint16_t sts_addr_high; /* not aligned... */ uint16_t sts_addr_low; uint16_t sts_xfer_high; /* not aligned... */ uint16_t sts_xfer_low; uint16_t sts_parm1; uint16_t sts_parm2; uint16_t sts_parm3; /* total size 0x30 bytes */ }; /* * Command values (cmd_cmd) */ #define CMD_BPP_TEST 0x00 #define CMD_READ 0x01 #define CMD_WRITE 0x02 #define CMD_READ_DESCRIPTOR 0x03 #define CMD_WRITE_DESCRIPTOR 0x04 #define CMD_FORMAT 0x05 #define CMD_FIX_BAD_SPOT 0x06 #define CMD_INQUIRY 0x09 #define CMD_READ_STATUS 0x10 #define CMD_LOAD_UNLOAD_RETENSION 0x11 #define CMD_WRITE_FILEMARK 0x12 #define CMD_REWIND 0x13 #define CMD_ERASE 0x14 #define CMD_SPACE 0x15 #define CMD_ENABLE_TARGET 0x20 #define CMD_DISABLE_TARGET 0x21 #define CMD_RESERVE_UNIT 0x22 #define CMD_RELEASE_UNIT 0x23 #define CMD_RESET 0x25 #define CMD_SCSI 0x26 #define CMD_SELF_TEST 0x27 #define CMD_TARGET_WAIT 0x28 #define CMD_TARGET_EXECUTE 0x29 #define CMD_DOWNLOAD 0x2a #define CMD_SET_SCSI_ADDRESS 0x2b #define CMD_OPEN 0x2d /* * Error values (sts_error, sts_status) */ #define ERR_OK 0x00 /* command parameter errors */ #define ERR_BAD_DESCRIPTOR 0x01 #define ERR_BAD_COMMAND 0x02 #define ERR_UNIMPLEMENTED_COMMAND 0x03 #define ERR_BAD_DRIVE 0x04 #define ERR_BAD_LOGICAL_ADDRESS 0x05 #define ERR_BAD_SG_TABLE 0x06 #define ERR_UNIMPLEMENTED_DEVICE 0x07 #define ERR_UNIT_NOT_INITIALIZED 0x08 /* media errors */ #define ERR_NO_ID 0x10 #define ERR_SEEK 0x11 #define ERR_RELOCATED_TRACK 0x12 #define ERR_BAD_ID 0x13 #define ERR_DATA_SYNC_FAULT 0x14 #define ERR_ECC 0x15 #define ERR_RECORD_NOT_FOUND 0x16 #define ERR_MEDIA 0x17 /* drive errors */ #define ERR_DRIVE_FAULT 0x20 #define ERR_WRITE_PROTECTED_MEDIA 0x21 #define ERR_MOTOR_OFF 0x22 #define ERR_DOOR_OPEN 0x23 #define ERR_DRIVE_NOT_READY 0x24 #define ERR_DRIVE_BUSY 0x25 /* VME DMA errors */ #define ERR_BUS 0x30 #define ERR_ALIGNMENT 0x31 #define ERR_BUS_TIMEOUT 0x32 #define ERR_INVALID_XFER_COUNT 0x33 /* disk format error */ #define ERR_NOT_ENOUGH_ALTERNATES 0x40 #define ERR_FORMAT_FAILED 0x41 #define ERR_VERIFY 0x42 #define ERR_BAD_FORMAT_PARAMETERS 0x43 #define ERR_CANNOT_FIX_BAD_SPOT 0x44 #define ERR_TOO_MANY_DEFECTS 0x45 /* MVME327A specific errors */ #define ERR_SCSI 0x80 /* additional status available*/ #define ERR_INDETERMINATE_MEDIA 0x81 /* no additional status */ #define ERR_INDETERMINATE_HARDWARE 0x82 #define ERR_BLANK_CHECK 0x83 #define ERR_INCOMPLETE_EXTENDED_MESSAGE 0x84 #define ERR_INVALID_RESELECTION 0x85 #define ERR_NO_STATUS_RETURNED 0x86 #define ERR_MESSAGE_OUT_NOT_TRANSFERRED 0x87 #define ERR_MESSAGE_IN_NOT_RECEIVED 0x88 #define ERR_INCOMPLETE_DATA_READ 0x89 #define ERR_INCOMPLETE_DATA_WRITE 0x8a #define ERR_INCORRECT_CDB_SIZE 0x8b #define ERR_UNDEFINED_SCSI_PHASE 0x8c #define ERR_SELECT_TIMEOUT 0x8d #define ERR_BUS_RESET 0x8e #define ERR_INVALID_MESSAGE_RECEIVED 0x8f #define ERR_COMMAND_NOT_RECEIVED 0x90 #define ERR_UNEXPECTED_STATUS_PHASE 0x91 #define ERR_SCSI_SCRIPT_MISMATCH 0x92 #define ERR_UNEXPECTED_DISCONNECT 0x93 #define ERR_REQUEST_SENSE_FAILED 0x94 #define ERR_NO_WRITE_DESCRIPTOR 0x95 #define ERR_INCOMPLETE_DATA_TRANSFER 0x96 #define ERR_OUT_OF_LOCAL_RESOURCES 0x97 #define ERR_LOCAL_MEMORY_RESOURCES_LOST 0x98 #define ERR_CHANNEL_RESERVED 0x99 #define ERR_DEVICE_RESERVED 0x9a #define ERR_ALREADY_ENABLED 0x9b #define ERR_TARGET_NOT_ENABLED 0x9c #define ERR_UNSUPPORTED_CONTROLLER_TYPE 0x9d #define ERR_UNSUPPORTED_DEVICE_TYPE 0x9e #define ERR_BLOCK_SIZE_MISMATCH 0x9f #define ERR_INVALID_CYL_IN_DEFECT_LIST 0xa0 #define ERR_INVALID_HEAD_IN_DEFECT_LIST 0xa1 #define ERR_BLOCK_SIZE_MISMATCH_NF 0xa2 /* non fatal */ #define ERR_SCSI_ID_UNCHANGED 0xa3 #define ERR_SCSI_ID_CHANGED 0xa4 #define ERR_NO_TARGET_ENABLE 0xa5 #define ERR_CANNOT_DO_D32 0xa6 #define ERR_CANNOT_DO_DMA 0xa7 #define ERR_INVALID_BLOCK_SIZE 0xa8 #define ERR_SPT_MISMATCH 0xa9 #define ERR_HEAD_MISMATCH 0xaa #define ERR_CYL_MISMATCH 0xab #define ERR_INVALID_FLOPPY_PARAMETERS 0xac #define ERR_ALREADY_RESERVED 0xad #define ERR_WAS_NOT_RESERVED 0xae #define ERR_INVALID_SECTOR_NUMBER 0xaf #define ERR_SELFTEST_FAILED 0xcc /* * SCSI specific command packet */ struct vsbic_scsi { uint32_t link; uint16_t ctrl; #define SCSI_CTRL_DMA 0x8000 /* allow DMA operation */ #define SCSI_CTRL_SYNC 0x4000 /* synchronous phase */ #define SCSI_CTRL_PAR 0x2000 /* enable parity checking */ #define SCSI_CTRL_SCHK 0x1000 /* manual status checking */ #define SCSI_CTRL_D32 0x0800 /* use D32 mode for data transfer */ #define SCSI_CTRL_BYTESWAP 0x0400 /* byteswap D16 words */ #define SCSI_CTRL_SG 0x0200 /* use scatter/gather transfer list */ #define SCSI_CTRL_LINK 0x0100 /* linked scsi command */ #define SCSI_CTRL_NO_ATN 0x0080 /* do not assert ATN during select */ uint8_t cmdlen; uint8_t reserved; uint8_t cdb[12]; uint32_t datalen; uint32_t dataptr; uint8_t status; uint8_t initiator; uint8_t msgin_flag; uint8_t msgout_flag; #define SCSI_MSG_INTERNAL 0x00 /* bytes in structure */ #define SCSI_MSG_EXTERNAL 0xff /* bytes pointed to by ptr */ uint16_t msgin_len; uint16_t msgin_ptr_high; /* not aligned... */ uint16_t msgin_ptr_low; uint8_t msgin[6]; uint16_t msgout_len; uint16_t msgout_ptr_high; /* not aligned... */ uint16_t msgout_ptr_low; uint8_t msgout[6]; uint8_t script[8]; /* script phases */ #define SCRIPT_DATA_OUT 0x00 #define SCRIPT_DATA_IN 0x01 #define SCRIPT_COMMAND 0x02 #define SCRIPT_STATUS 0x03 #define SCRIPT_MSG_OUT 0x06 #define SCRIPT_MSG_IN 0x07 #define SCRIPT_END 0x08 #define SCRIPT_END_LINKED 0x09 /* total size 0x40 bytes */ }; /* * Scatter/gather list element */ struct vsbic_sg { uint32_t addr; uint32_t size; }; #define VSBIC_MAXSG (MAXPHYS / PAGE_SIZE) /* * Complete SCSI command structure: packet, SCSI specific structure, S/G list. * Nothing needs them to be contiguous but it will make our life simpler * this way. */ struct vsbic_cmd { struct vsbic_pkt pkt; struct vsbic_scsi scsi; struct vsbic_sg sg[VSBIC_MAXSG]; }; /* * The host firmware addresses the VME bus with A23 set to 1, and uses * an extension address register to provide the top 9 bits of the A32 * address. We thus need to make sure that none of the structures we * share with the firmware cross a 8MB boundary. */ #define VSBIC_MEM_BOUNDARY (1 << 23) /* * A note on resource usage: * * - this driver uses 9 channels; one per SCSI target, one for polled * commands (which does not cause interrupts); and a 9th one to issue * reset commands when necessary, with a higher priority than the other * channels. * * - for each target channel, there numopenings commands (packet, scsi * specific packet and s/g list) allocated. * - for the polling channel, there is only one command. * - for the reset channel, there is one command (packet) per target. * * - for each channel, there are as many envelopes as possible commands * on the channel, plus two (one NULL envelope per pipe) per channel. */ #define VSBIC_NUMOPENINGS 2 #define VSBIC_NTARGETS 7 #define VSBIC_NCHANNELS (VSBIC_NTARGETS + 2) #define VSBIC_TARGET_CHANNEL(sc,tgt) (tgt) /* 0..7 */ #define VSBIC_RESET_CHANNEL(sc) (sc->sc_id) /* within 0..7 */ #define VSBIC_POLLING_CHANNEL(sc) (8) #define VSBIC_NPACKETS \ ((VSBIC_NTARGETS * VSBIC_NUMOPENINGS) + VSBIC_NTARGETS + 1) #define VSBIC_NENVELOPES (VSBIC_NPACKETS + 2 * VSBIC_NCHANNELS) #define VSBIC_NCCBS (VSBIC_NTARGETS * VSBIC_NUMOPENINGS) /* * Per command information */ struct vsbic_ccb { struct vsbic_ccb *ccb_next; struct vsbic_cmd *ccb_cmd; /* associated command */ struct scsi_xfer *ccb_xs; /* associated request */ int ccb_xsflags; /* copy of ccb_xs->flags */ int ccb_flags; #define CCBF_SENSE 0x01 /* request sense sent */ bus_dmamap_t ccb_dmamap; /* DMA map for data transfer */ bus_size_t ccb_dmalen; }; struct vsbic_softc { struct bpp_softc sc_bpp; bus_dma_tag_t sc_dmat; struct scsi_link sc_link; uint sc_id; /* host adapter ID */ int sc_vec; /* interrupt vector */ int sc_ipl; /* interrupt level */ struct intrhand sc_ih; bus_dmamap_t sc_chanmap; /* channel pool */ bus_dma_segment_t sc_chanseg; #define sc_chanpa sc_chanseg.ds_addr vaddr_t sc_chanva; bus_dmamap_t sc_envmap; /* envelope pool */ bus_dma_segment_t sc_envseg; #define sc_envpa sc_envseg.ds_addr vaddr_t sc_envva; bus_dmamap_t sc_cmdmap; /* packet pool */ bus_dma_segment_t sc_cmdseg; #define sc_cmdpa sc_cmdseg.ds_addr vaddr_t sc_cmdva; struct vsbic_cmd *sc_cmd_free; /* head of free cmd list */ struct vsbic_ccb *sc_ccb_free; /* head of free ccb list */ struct vsbic_ccb *sc_ccb_active; /* head of active ccb list */ /* bpp channel array */ struct bpp_chan sc_chan[VSBIC_NCHANNELS]; }; #define DEVNAME(sc) ((sc)->sc_bpp.sc_dev.dv_xname) void vsbic_activate_ccb(struct vsbic_softc *, struct vsbic_ccb *, struct vsbic_cmd *); int vsbic_alloc_physical(struct vsbic_softc *, bus_dmamap_t *, bus_dma_segment_t *, vaddr_t *, bus_size_t, const char *); void vsbic_attach(struct device *, struct device *, void *); int vsbic_channel_intr(struct vsbic_softc *, struct bpp_chan *); paddr_t vsbic_chan_pa(struct bpp_softc *, struct bpp_channel *); void vsbic_chan_sync(struct bpp_softc *, struct bpp_channel *, int); struct vsbic_ccb * vsbic_cmd_ccb(struct vsbic_softc *, struct vsbic_cmd *); int vsbic_create_ccbs(struct vsbic_softc *, uint); int vsbic_create_channels(struct vsbic_softc *, uint); int vsbic_create_cmds(struct vsbic_softc *, uint); struct vsbic_cmd * vsbic_dequeue_cmd(struct vsbic_softc *, struct bpp_chan *); paddr_t vsbic_env_pa(struct bpp_softc *, struct bpp_envelope *); void vsbic_env_sync(struct bpp_softc *, struct bpp_envelope *, int); struct bpp_envelope * vsbic_env_va(struct bpp_softc *, paddr_t); void vsbic_free_ccb(struct vsbic_softc *, struct vsbic_ccb *); struct vsbic_ccb * vsbic_get_ccb(struct vsbic_softc *); struct vsbic_cmd * vsbic_get_cmd(struct vsbic_softc *); int vsbic_intr(void *); int vsbic_load_command(struct vsbic_softc *, struct vsbic_ccb *, struct vsbic_cmd *, struct scsi_link *, struct scsi_generic *, int, uint8_t *, int); int vsbic_match(struct device *, void *, void *); void vsbic_poll(struct vsbic_softc *, struct vsbic_ccb *); void vsbic_put_cmd(struct vsbic_softc *, struct vsbic_cmd *); void vsbic_queue_cmd(struct vsbic_softc *, struct bpp_chan *, struct bpp_envelope *, struct vsbic_cmd *); int vsbic_request_sense(struct vsbic_softc *, struct vsbic_ccb *); void vsbic_reset_command(struct vsbic_softc *, struct vsbic_cmd *, struct scsi_link *); void vsbic_scsicmd(struct scsi_xfer *); int vsbic_scsireset(struct vsbic_softc *, struct scsi_xfer *); void vsbic_timeout(void *); void vsbic_wrapup(struct vsbic_softc *, struct vsbic_ccb *); const struct cfattach vsbic_ca = { sizeof(struct vsbic_softc), vsbic_match, vsbic_attach }; struct cfdriver vsbic_cd = { NULL, "vsbic", DV_DULL }; struct scsi_adapter vsbic_swtch = { vsbic_scsicmd, scsi_minphys }; #define MVME327_CSR_ID 0xff #define MVME327_CSR_SIZE 0x100 int vsbic_match(struct device *device, void *cf, void *args) { struct confargs *ca = args; bus_space_tag_t iot = ca->ca_iot; bus_space_handle_t ioh; int rc; uint8_t id; if (bus_space_map(iot, ca->ca_paddr, MVME327_CSR_SIZE, 0, &ioh) != 0) return 0; rc = badaddr((vaddr_t)bus_space_vaddr(iot, ioh) + MVME327_CSR_ID, 1); if (rc == 0) { /* Check the SCSI ID is sane */ id = bus_space_read_1(iot, ioh, MVME327_CSR_ID); if (id & ~0x07) rc = 1; } bus_space_unmap(iot, ioh, MVME327_CSR_SIZE); return (rc == 0); } void vsbic_attach(struct device *parent, struct device *self, void *args) { struct confargs *ca = args; struct vsbic_softc *sc = (struct vsbic_softc *)self; struct bpp_softc *bsc = &sc->sc_bpp; struct scsibus_attach_args saa; bus_space_handle_t ioh; int tmp; if (ca->ca_ipl < IPL_BIO) ca->ca_ipl = IPL_BIO; printf("\n"); if (bus_space_map(ca->ca_iot, ca->ca_paddr, MVME327_CSR_SIZE, BUS_SPACE_MAP_LINEAR, &ioh) != 0) { printf("%s: can't map registers!\n", DEVNAME(sc)); return; } bpp_attach(bsc, ca->ca_iot, ioh); sc->sc_ipl = ca->ca_ipl; sc->sc_vec = ca->ca_vec; sc->sc_dmat = ca->ca_dmat; /* * Setup envelope and channel memory utility functions. * * Since the MVME327 shares no memory with the host cpu, all the * resources will be allocated in physical memory, and will need * explicit cache operations. */ bsc->bpp_chan_pa = vsbic_chan_pa; bsc->bpp_chan_sync = vsbic_chan_sync; bsc->bpp_env_pa = vsbic_env_pa; bsc->bpp_env_va = vsbic_env_va; bsc->bpp_env_sync = vsbic_env_sync; sc->sc_id = bus_space_read_1(bsc->sc_iot, bsc->sc_ioh, MVME327_CSR_ID); if (bpp_reset(bsc) != 0) { printf("%s: reset failed\n", DEVNAME(sc)); return; } sc->sc_ih.ih_fn = vsbic_intr; sc->sc_ih.ih_arg = sc; sc->sc_ih.ih_wantframe = 0; sc->sc_ih.ih_ipl = ca->ca_ipl; /* * Allocate memory for the channel headers, envelopes and packets. */ if (vsbic_alloc_physical(sc, &sc->sc_envmap, &sc->sc_envseg, &sc->sc_envva, VSBIC_NENVELOPES * sizeof(struct bpp_envelope), "envelope") != 0) return; bpp_initialize_envelopes(bsc, (struct bpp_envelope *)sc->sc_envva, VSBIC_NENVELOPES); if (vsbic_create_cmds(sc, VSBIC_NPACKETS) != STATUS_OK) { /* XXX free resources */ return; } if (vsbic_create_ccbs(sc, VSBIC_NCCBS) != 0) { /* XXX free resources */ return; } if (vsbic_create_channels(sc, VSBIC_NCHANNELS) != STATUS_OK) { /* XXX free resources */ return; } vmeintr_establish(sc->sc_vec, &sc->sc_ih, DEVNAME(sc)); sc->sc_link.adapter = &vsbic_swtch; sc->sc_link.adapter_buswidth = 8; sc->sc_link.adapter_softc = sc; sc->sc_link.adapter_target = sc->sc_id; sc->sc_link.openings = VSBIC_NUMOPENINGS; bzero(&saa, sizeof saa); saa.saa_sc_link = &sc->sc_link; tmp = bootpart; if (ca->ca_paddr != bootaddr) bootpart = -1; config_found(self, &saa, scsiprint); bootpart = tmp; } /* * Various simple routines to get the addresses of the various structures * shared with the MVME327, as well as to copyback caches. */ paddr_t vsbic_chan_pa(struct bpp_softc *bsc, struct bpp_channel *va) { struct vsbic_softc *sc = (struct vsbic_softc *)bsc; paddr_t pa = sc->sc_chanpa + ((vaddr_t)va - sc->sc_chanva); #ifdef VSBIC_DEBUG printf("chan: va %p -> pa %p\n", va, pa); #endif return pa; } void vsbic_chan_sync(struct bpp_softc *bsc, struct bpp_channel *va, int fl) { struct vsbic_softc *sc = (struct vsbic_softc *)bsc; bus_dmamap_sync(sc->sc_dmat, sc->sc_chanmap, (vaddr_t)va - sc->sc_chanva, sizeof(struct bpp_channel), fl); } paddr_t vsbic_env_pa(struct bpp_softc *bsc, struct bpp_envelope *va) { struct vsbic_softc *sc = (struct vsbic_softc *)bsc; paddr_t pa = sc->sc_envpa + ((vaddr_t)va - sc->sc_envva); #ifdef VSBIC_DEBUG printf("env: va %p -> pa %p\n", va, pa); #endif return pa; } struct bpp_envelope * vsbic_env_va(struct bpp_softc *bsc, paddr_t pa) { struct vsbic_softc *sc = (struct vsbic_softc *)bsc; vaddr_t va = sc->sc_envva + (pa - sc->sc_envpa); #ifdef VSBIC_DEBUG printf("env: pa %p -> va %p\n", pa, va); #endif return (struct bpp_envelope *)va; } void vsbic_env_sync(struct bpp_softc *bsc, struct bpp_envelope *va, int fl) { struct vsbic_softc *sc = (struct vsbic_softc *)bsc; bus_dmamap_sync(sc->sc_dmat, sc->sc_envmap, (vaddr_t)va - sc->sc_envva, sizeof(struct bpp_envelope), fl); } static inline paddr_t vsbic_cmd_pa(struct vsbic_softc *sc, struct vsbic_cmd *va) { return sc->sc_cmdpa + ((vaddr_t)va - sc->sc_cmdva); } static inline struct vsbic_cmd *vsbic_cmd_va(struct vsbic_softc *sc, paddr_t pa) { return (struct vsbic_cmd *)(sc->sc_cmdva + (pa - sc->sc_cmdpa)); } static inline void vsbic_cmd_sync(struct vsbic_softc *sc, struct vsbic_cmd *va, int fl) { bus_dmamap_sync(sc->sc_dmat, sc->sc_cmdmap, (vaddr_t)va - sc->sc_cmdva, sizeof(struct vsbic_cmd), fl); } /* * Allocate contiguous physical memory, not crossing 8 MB boundaries. */ int vsbic_alloc_physical(struct vsbic_softc *sc, bus_dmamap_t *dmamap, bus_dma_segment_t *dmaseg, vaddr_t *va, bus_size_t len, const char *what) { int nseg; int rc; len = round_page(len); rc = bus_dmamem_alloc(sc->sc_dmat, len, 0, 0, dmaseg, 1, &nseg, BUS_DMA_NOWAIT); if (rc != 0) { printf("%s: unable to allocate %s memory: error %d\n", DEVNAME(sc), what, rc); goto fail1; } rc = bus_dmamem_map(sc->sc_dmat, dmaseg, nseg, len, (caddr_t *)va, BUS_DMA_NOWAIT | BUS_DMA_COHERENT); if (rc != 0) { printf("%s: unable to map %s memory: error %d\n", DEVNAME(sc), what, rc); goto fail2; } rc = bus_dmamap_create(sc->sc_dmat, len, 1, len, VSBIC_MEM_BOUNDARY, BUS_DMA_NOWAIT /* | BUS_DMA_ALLOCNOW */, dmamap); if (rc != 0) { printf("%s: unable to create %s dma map: error %d\n", DEVNAME(sc), what, rc); goto fail3; } rc = bus_dmamap_load(sc->sc_dmat, *dmamap, (void *)*va, len, NULL, BUS_DMA_NOWAIT); if (rc != 0) { printf("%s: unable to load %s dma map: error %d\n", DEVNAME(sc), what, rc); goto fail4; } return 0; fail4: bus_dmamap_destroy(sc->sc_dmat, *dmamap); fail3: bus_dmamem_unmap(sc->sc_dmat, (caddr_t)*va, PAGE_SIZE); fail2: bus_dmamem_free(sc->sc_dmat, dmaseg, 1); fail1: return rc; } /* * CSR operations */ int vsbic_create_channels(struct vsbic_softc *sc, uint cnt) { struct bpp_softc *bsc = &sc->sc_bpp; struct bpp_chan *chan; struct bpp_channel *channel; int priority, ipl, vec; uint i; int rc; rc = vsbic_alloc_physical(sc, &sc->sc_chanmap, &sc->sc_chanseg, &sc->sc_chanva, cnt * sizeof(struct bpp_channel), "channel"); if (rc != 0) return STATUS_ERRNO + rc; chan = sc->sc_chan; channel = (struct bpp_channel *)sc->sc_chanva; for (i = 0; i < cnt; i++, chan++, channel++) { chan->ch = channel; if (i == VSBIC_RESET_CHANNEL(sc)) priority = BPP_PRIORITY_HIGHEST + 0x20; else priority = BPP_PRIORITY_HIGHEST + 0x40; if (i == VSBIC_POLLING_CHANNEL(sc)) { ipl = 0; vec = 0; } else { ipl = sc->sc_ipl; vec = sc->sc_vec; } rc = bpp_create_channel(bsc, chan, priority, ipl, vec); if (rc != STATUS_OK) { printf("%s: error creating channel for target %d: %x\n", DEVNAME(sc), i, rc); return rc; } } return STATUS_OK; } /* * Command (packet) management */ /* * Create a set of commands, and put them on a free list. */ int vsbic_create_cmds(struct vsbic_softc *sc, uint cnt) { struct vsbic_cmd *cmd; int rc; rc = vsbic_alloc_physical(sc, &sc->sc_cmdmap, &sc->sc_cmdseg, &sc->sc_cmdva, cnt * sizeof(struct vsbic_cmd), "packet"); if (rc != 0) return STATUS_ERRNO + rc; sc->sc_cmd_free = NULL; cmd = (struct vsbic_cmd *)sc->sc_cmdva; while (cnt-- != 0) vsbic_put_cmd(sc, cmd++); return STATUS_OK; } /* * Get a new command from the free list. */ struct vsbic_cmd * vsbic_get_cmd(struct vsbic_softc *sc) { struct vsbic_cmd *cmd; cmd = sc->sc_cmd_free; if (cmd != NULL) { sc->sc_cmd_free = (struct vsbic_cmd *)cmd->pkt.cmd_link; memset(cmd, 0, sizeof(*cmd)); } return cmd; } /* * Put a command into the free list. */ void vsbic_put_cmd(struct vsbic_softc *sc, struct vsbic_cmd *cmd) { cmd->pkt.cmd_link = (uint32_t)sc->sc_cmd_free; sc->sc_cmd_free = cmd; } /* * Dequeue an envelope from the status pipe, and return the command it * was carrying. The envelope itself is returned to the free list. */ struct vsbic_cmd * vsbic_dequeue_cmd(struct vsbic_softc *sc, struct bpp_chan *chan) { struct bpp_softc *bsc = &sc->sc_bpp; struct vsbic_cmd *cmd; paddr_t cmdpa; if (bpp_dequeue_envelope(bsc, chan, &cmdpa) != 0) return NULL; cmd = vsbic_cmd_va(sc, cmdpa); vsbic_cmd_sync(sc, cmd, BUS_DMASYNC_POSTREAD); #ifdef VSBIC_DEBUG printf("%s: %s() -> %p\n", DEVNAME(sc), __func__, cmd); #endif return cmd; } /* * Send a command packet. */ void vsbic_queue_cmd(struct vsbic_softc *sc, struct bpp_chan *chan, struct bpp_envelope *tail, struct vsbic_cmd *cmd) { struct bpp_softc *bsc = &sc->sc_bpp; paddr_t cmdpa; vsbic_cmd_sync(sc, cmd, BUS_DMASYNC_PREWRITE); cmdpa = vsbic_cmd_pa(sc, cmd); #ifdef VSBIC_DEBUG printf("%s: %s(%p)\n", DEVNAME(sc), __func__, cmd); #endif bpp_queue_envelope(bsc, chan, tail, cmdpa); } /* * CCB management */ /* * Create a set of ccb, and put them on a free list. */ int vsbic_create_ccbs(struct vsbic_softc *sc, uint cnt) { struct vsbic_ccb *ccb; int rc; ccb = (struct vsbic_ccb *)malloc(cnt * sizeof(struct vsbic_ccb), M_DEVBUF, M_ZERO | M_NOWAIT); if (ccb == NULL) { printf("%s: unable to allocate CCB memory\n", DEVNAME(sc)); return ENOMEM; } sc->sc_ccb_free = NULL; sc->sc_ccb_active = NULL; while (cnt-- != 0) { /* * Create a DMA map for data transfers. */ rc = bus_dmamap_create(sc->sc_dmat, MAXPHYS, VSBIC_MAXSG, MAXPHYS, VSBIC_MEM_BOUNDARY, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->ccb_dmamap); if (rc != 0) { printf("%s: unable to create CCB data dma map" ": error %d\n", DEVNAME(sc), rc); return rc; } vsbic_free_ccb(sc, ccb++); } return 0; } /* * Get a new ccb from the free list. */ struct vsbic_ccb * vsbic_get_ccb(struct vsbic_softc *sc) { struct vsbic_ccb *ccb; ccb = sc->sc_ccb_free; if (ccb != NULL) { sc->sc_ccb_free = ccb->ccb_next; ccb->ccb_next = NULL; ccb->ccb_cmd = NULL; ccb->ccb_xs = NULL; ccb->ccb_flags = 0; } return ccb; } /* * Put a ccb into the free list. */ void vsbic_free_ccb(struct vsbic_softc *sc, struct vsbic_ccb *ccb) { ccb->ccb_next = sc->sc_ccb_free; sc->sc_ccb_free = ccb; } /* * Retrieve the active ccb associated to a command, and remove it from * the active list. * Since there won't be many currently active commands, storing them * in a list is acceptable. */ struct vsbic_ccb * vsbic_cmd_ccb(struct vsbic_softc *sc, struct vsbic_cmd *cmd) { struct vsbic_ccb *ccb, *prev; for (prev = NULL, ccb = sc->sc_ccb_active; ccb != NULL; prev = ccb, ccb = ccb->ccb_next) { if (ccb->ccb_cmd == cmd) { if (prev == NULL) sc->sc_ccb_active = ccb->ccb_next; else prev->ccb_next = ccb->ccb_next; break; } } return ccb; } /* * Put a ccb into the active list. */ void vsbic_activate_ccb(struct vsbic_softc *sc, struct vsbic_ccb *ccb, struct vsbic_cmd *cmd) { struct vsbic_ccb *tmp; ccb->ccb_cmd = cmd; /* insert at end of list */ if (sc->sc_ccb_active == NULL) sc->sc_ccb_active = ccb; else { for (tmp = sc->sc_ccb_active; tmp->ccb_next != NULL; tmp = tmp->ccb_next) ; tmp->ccb_next = ccb; } } /* * SCSI Layer Interface */ /* * Setup a command packet according to the SCSI command to send */ int vsbic_load_command(struct vsbic_softc *sc, struct vsbic_ccb *ccb, struct vsbic_cmd *c, struct scsi_link *sl, struct scsi_generic *cmd, int cmdlen, uint8_t *data, int datalen) { bus_dma_segment_t *seg; struct vsbic_sg *sgelem; int nsegs, segno; uint ctrl; uint8_t *msgout; uint8_t *script; int rc; #ifdef VSBIC_DEBUG printf("%s: command %02x len %d data %d tgt %d:%d\n", DEVNAME(sc), cmd->opcode, cmdlen, datalen, sl->target, sl->lun); #endif /* * Setup DMA map for data transfer. */ if (ISSET(ccb->ccb_xsflags, SCSI_DATA_IN | SCSI_DATA_OUT)) { ccb->ccb_dmalen = (bus_size_t)datalen; rc = bus_dmamap_load(sc->sc_dmat, ccb->ccb_dmamap, data, ccb->ccb_dmalen, NULL, BUS_DMA_STREAMING | (ISSET(ccb->ccb_xsflags,SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | (ISSET(ccb->ccb_xsflags, SCSI_DATA_IN) ? BUS_DMA_READ : BUS_DMA_WRITE)); if (rc != 0) return rc; bus_dmamap_sync(sc->sc_dmat, ccb->ccb_dmamap, 0, ccb->ccb_dmalen, ISSET(ccb->ccb_xsflags, SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); nsegs = ccb->ccb_dmamap->dm_nsegs; } else nsegs = 0; /* * Setup command packet. */ if (cmd->opcode == INQUIRY && nsegs == 1) c->pkt.cmd_cmd = CMD_INQUIRY; else c->pkt.cmd_cmd = CMD_SCSI; c->pkt.cmd_device = VSBIC_DEVICE_SCSI; c->pkt.cmd_unit = VSBIC_UNIT(sl->target, sl->lun); c->pkt.cmd_addrmod = ADRM_EXT_S_D; c->pkt.cmd_buswidth = MEMT_D32; if (c->pkt.cmd_cmd == CMD_INQUIRY) { c->pkt.cmd_cmd_ctrl = 0; seg = ccb->ccb_dmamap->dm_segs; c->pkt.cmd_addr2 = htobe32(seg->ds_addr); c->pkt.cmd_sg_count = 0; c->pkt.cmd_parm2 = htobe16(datalen >> 16); c->pkt.cmd_parm3 = htobe16(datalen & 0xffff); } else { c->pkt.cmd_addr1 = htobe32(vsbic_cmd_pa(sc, c) + offsetof(struct vsbic_cmd, scsi)); /* * Setup SCSI specific packet. */ ctrl = SCSI_CTRL_PAR | SCSI_CTRL_SCHK; if (nsegs != 0) { ctrl |= SCSI_CTRL_D32; /* manual recommands PIO for small transfers */ if (datalen > 0x100) ctrl |= SCSI_CTRL_DMA; } if (cmd->opcode == REQUEST_SENSE) ctrl |= SCSI_CTRL_NO_ATN; c->scsi.cmdlen = cmdlen; memcpy(c->scsi.cdb, cmd, cmdlen); c->scsi.datalen = htobe32(datalen); c->scsi.msgin_flag = SCSI_MSG_INTERNAL; c->scsi.msgout_flag = SCSI_MSG_INTERNAL; /* * Setup scatter/gather information. */ if (nsegs != 0) { seg = ccb->ccb_dmamap->dm_segs; if (nsegs == 1) { c->scsi.dataptr = htobe32(seg->ds_addr); } else { sgelem = c->sg; ctrl |= SCSI_CTRL_SG; for (segno = 0; segno < nsegs; seg++, segno++) { sgelem->addr = htobe32(seg->ds_addr); sgelem->size = htobe32(seg->ds_len); sgelem++; } c->pkt.cmd_sg_count = htobe16(nsegs); c->scsi.dataptr = htobe32(vsbic_cmd_pa(sc, c) + offsetof(struct vsbic_cmd, sg)); } c->pkt.cmd_addr2 = c->scsi.dataptr; } c->scsi.ctrl = ctrl; /* * Setup SCSI ``script'' - really the list of phases to expect, * as well as the message bytes to send during the message out * phase if necessary. * * Since this driver doesn't support synchronous transfers yet, * this is really easy to build. */ msgout = c->scsi.msgout; script = c->scsi.script; /* always message out unless the command is request sense */ if (cmd->opcode != REQUEST_SENSE) { *script++ = SCRIPT_MSG_OUT; *msgout++ = MSG_IDENTIFY(sl->lun, 1); } *script++ = SCRIPT_COMMAND; if (ISSET(ccb->ccb_xsflags, SCSI_DATA_IN)) *script++ = SCRIPT_DATA_IN; else if (ISSET(ccb->ccb_xsflags, SCSI_DATA_OUT)) *script++ = SCRIPT_DATA_OUT; *script++ = SCRIPT_STATUS; *script++ = SCRIPT_MSG_IN; *script++ = SCRIPT_END; c->scsi.msgout_len = msgout - c->scsi.msgout; } return 0; } /* * Setup a reset command */ void vsbic_reset_command(struct vsbic_softc *sc, struct vsbic_cmd *cmd, struct scsi_link *sl) { cmd->pkt.cmd_cmd = CMD_RESET; cmd->pkt.cmd_device = VSBIC_DEVICE_SCSI; if (sl != NULL) { /* the lun is ignored for reset commands */ cmd->pkt.cmd_unit = VSBIC_UNIT(sl->target, 0 /* sl->lun */); } else { /* reset whole bus */ cmd->pkt.cmd_unit = VSBIC_UNIT(8, 0); } } /* * Try and send a command to the board. */ void vsbic_scsicmd(struct scsi_xfer *xs) { struct scsi_link *sl = xs->sc_link; struct vsbic_softc *sc = (struct vsbic_softc *)sl->adapter_softc; struct bpp_softc *bsc = &sc->sc_bpp; struct vsbic_ccb *ccb; struct bpp_envelope *env; struct vsbic_cmd *cmd; uint ch; int rc; int s; s = splbio(); #ifdef DIAGNOSTIC /* * We shouldn't receive commands on the host adapter ID, this * channel is reserved for reset commands. */ if (sl->target == sc->sc_id) { xs->error = XS_DRIVER_STUFFUP; scsi_done(xs); splx(s); return; } #endif /* * CDB larger than 12 bytes are not supported, as well as * odd-sized data transfers. * Sense data borrowed from gdt(4). */ if (xs->cmdlen > 12 || (ISSET(xs->flags, SCSI_DATA_IN | SCSI_DATA_OUT) && (xs->datalen & 1) != 0)) { #ifdef VSBIC_DEBUG printf("%s: can't issue command, cdb len %d data len %x\n", DEVNAME(sc), xs->cmdlen, xs->datalen); #endif memset(&xs->sense, 0, sizeof(xs->sense)); xs->sense.error_code = SSD_ERRCODE_VALID | SSD_ERRCODE_CURRENT; xs->sense.flags = SKEY_ILLEGAL_REQUEST; /* 0x20 illcmd, 0x24 illfield */ xs->sense.add_sense_code = xs->cmdlen > 12 ? 0x20 : 0x24; xs->error = XS_SENSE; scsi_done(xs); splx(s); return; } /* * Get a CCB, an envelope and a command packet. */ ccb = vsbic_get_ccb(sc); if (ccb == NULL) { #ifdef VSBIC_DEBUG printf("%s: no free CCB\n", DEVNAME(sc)); #endif xs->error = XS_NO_CCB; scsi_done(xs); splx(s); } env = bpp_get_envelope(bsc); if (env == NULL) { #ifdef VSBIC_DEBUG printf("%s: no free envelope\n", DEVNAME(sc)); #endif vsbic_free_ccb(sc, ccb); xs->error = XS_NO_CCB; scsi_done(xs); splx(s); return; } cmd = vsbic_get_cmd(sc); if (cmd == NULL) { #ifdef VSBIC_DEBUG printf("%s: no free command\n", DEVNAME(sc)); #endif bpp_put_envelope(bsc, env); vsbic_free_ccb(sc, ccb); xs->error = XS_NO_CCB; scsi_done(xs); splx(s); return; } ccb->ccb_xs = xs; ccb->ccb_xsflags = xs->flags; timeout_set(&xs->stimeout, vsbic_timeout, ccb); /* * Build command script. */ rc = vsbic_load_command(sc, ccb, cmd, sl, xs->cmd, xs->cmdlen, xs->data, xs->datalen); if (rc != 0) { printf("%s: unable to load DMA map: error %d\n", DEVNAME(sc), rc); vsbic_put_cmd(sc, cmd); bpp_put_envelope(bsc, env); vsbic_free_ccb(sc, ccb); xs->error = XS_DRIVER_STUFFUP; scsi_done(xs); splx(s); return; } /* * Send the command to the hardware. */ vsbic_activate_ccb(sc, ccb, cmd); if (ISSET(xs->flags, SCSI_POLL)) ch = VSBIC_POLLING_CHANNEL(sc); else ch = VSBIC_TARGET_CHANNEL(sc, sl->target); vsbic_queue_cmd(sc, &sc->sc_chan[ch], env, cmd); if (ISSET(xs->flags, SCSI_POLL)) { splx(s); vsbic_poll(sc, ccb); } else { timeout_add_msec(&xs->stimeout, xs->timeout); splx(s); } } /* * Send a request sense command. Invoked at splbio(). */ int vsbic_request_sense(struct vsbic_softc *sc, struct vsbic_ccb *ccb) { struct bpp_softc *bsc = &sc->sc_bpp; struct scsi_xfer *xs = ccb->ccb_xs; struct scsi_link *sl = xs->sc_link; struct bpp_envelope *env; struct vsbic_cmd *cmd; struct scsi_sense ss; int rc; env = bpp_get_envelope(bsc); if (env == NULL) { #ifdef VSBIC_DEBUG printf("%s: no free envelope\n", DEVNAME(sc)); #endif return EAGAIN; } cmd = vsbic_get_cmd(sc); if (cmd == NULL) { #ifdef VSBIC_DEBUG printf("%s: no free command\n", DEVNAME(sc)); #endif bpp_put_envelope(bsc, env); return EAGAIN; } memset(&ss, 0, sizeof ss); ss.opcode = REQUEST_SENSE; ss.byte2 = sl->lun << 5; ss.length = sizeof(xs->sense); ccb->ccb_xsflags = (ccb->ccb_xsflags & SCSI_NOSLEEP) | SCSI_DATA_IN | SCSI_POLL; rc = vsbic_load_command(sc, ccb, cmd, sl, (struct scsi_generic *)&ss, sizeof ss, (uint8_t *)&xs->sense, sizeof(xs->sense)); if (rc != 0) { vsbic_put_cmd(sc, cmd); bpp_put_envelope(bsc, env); return rc; } vsbic_activate_ccb(sc, ccb, cmd); vsbic_queue_cmd(sc, &sc->sc_chan[VSBIC_POLLING_CHANNEL(sc)], env, cmd); if (xs->timeout > 1000) xs->timeout = 1000; vsbic_poll(sc, ccb); return 0; } /* * Reset a target. Invoked at splbio(). */ int vsbic_scsireset(struct vsbic_softc *sc, struct scsi_xfer *xs) { struct bpp_softc *bsc = &sc->sc_bpp; struct bpp_chan *chan; struct scsi_link *sl; struct bpp_envelope *env; struct vsbic_cmd *cmd; /* * Get an envelope and a command packet. */ env = bpp_get_envelope(bsc); if (env == NULL) { #ifdef VSBIC_DEBUG printf("%s: no free envelope\n", DEVNAME(sc)); #endif return EAGAIN; } cmd = vsbic_get_cmd(sc); if (cmd == NULL) { #ifdef VSBIC_DEBUG printf("%s: no free command\n", DEVNAME(sc)); #endif bpp_put_envelope(bsc, env); return EAGAIN; } if (xs == NULL) sl = NULL; else sl = xs->sc_link; vsbic_reset_command(sc, cmd, sl); chan = &sc->sc_chan[VSBIC_RESET_CHANNEL(sc)]; vsbic_queue_cmd(sc, chan, env, cmd); return 0; } /* * Wrapup task after a command has completed (or failed). */ void vsbic_wrapup(struct vsbic_softc *sc, struct vsbic_ccb *ccb) { struct scsi_xfer *xs = ccb->ccb_xs; timeout_del(&xs->stimeout); if (xs->error == XS_NOERROR) { switch (xs->status) { case SCSI_OK: xs->error = XS_NOERROR; break; case SCSI_CHECK: /* * Send a request sense command. If we can't, or * it fails, don't insist and fail the command. */ if (!ISSET(ccb->ccb_flags, CCBF_SENSE)) { SET(ccb->ccb_flags, CCBF_SENSE); xs->error = XS_SENSE; if (vsbic_request_sense(sc, ccb) == 0) return; } xs->error = XS_DRIVER_STUFFUP; break; default: xs->error = XS_DRIVER_STUFFUP; break; } } vsbic_free_ccb(sc, ccb); scsi_done(xs); } /* * Polled command operation. */ void vsbic_poll(struct vsbic_softc *sc, struct vsbic_ccb *ccb) { struct bpp_chan *chan = &sc->sc_chan[VSBIC_POLLING_CHANNEL(sc)]; struct scsi_xfer *xs = ccb->ccb_xs; int s; int tmo; tmo = ccb->ccb_xs->timeout; s = splbio(); for (;;) { if (vsbic_channel_intr(sc, chan) != 0) if (ISSET(xs->flags, ITSDONE)) break; /* * It is safe to lower spl while waiting, since the polling * channel never interrupts, and thus we do not risk * vsbic_intr() processing this request behind our back. */ splx(s); delay(1000); tmo--; s = splbio(); if (tmo == 0) break; } if (tmo == 0) { vsbic_timeout(ccb); if (!ISSET(xs->flags, ITSDONE)) { /* * We have sent a reset command. Poll for its * completion. */ chan = &sc->sc_chan[VSBIC_RESET_CHANNEL(sc)]; for (;;) { if (vsbic_channel_intr(sc, chan) != 0) if (ISSET(xs->flags, ITSDONE)) break; delay(10000); /* 10ms */ } } } /* * vsbic_intr() does not invoke vsbic_wrapup for polled * commands, since we need the scsi_xfer to remain valid * after the commands completes. */ vsbic_wrapup(sc, ccb); splx(s); } void vsbic_timeout(void *v) { struct vsbic_ccb *ccb = (struct vsbic_ccb *)v; struct scsi_xfer *xs = ccb->ccb_xs; struct scsi_link *sl = xs->sc_link; struct vsbic_softc *sc = (struct vsbic_softc *)sl->adapter_softc; int s; sc_print_addr(sl); printf("SCSI command 0x%x timeout\n", xs->cmd->opcode); s = splbio(); if (vsbic_scsireset(sc, xs) != 0) { sc_print_addr(sl); printf("unable to reset SCSI bus\n"); xs->error = XS_TIMEOUT; xs->status = SCSI_TERMINATED; if (ISSET(ccb->ccb_xsflags, SCSI_POLL)) { SET(xs->flags, ITSDONE); /* caller will invoke vsbic_wrapup() later */ } else vsbic_wrapup(sc, ccb); /* * This is very likely to hose at least this device, * until another SCSI bus reset is tried, since the * command will never complete... * * We could remember this situation and issue a bus * reset as soon as an envelope is available, but * the initial envelope number computation is supposed * to prevent this from occuring. */ } /* * If we have been able to send the reset command, make * sure we are forcing an error condition, to report the * correct error. */ xs->error = XS_TIMEOUT; xs->status = SCSI_TERMINATED; splx(s); } /* * Interrupt Handler */ int vsbic_intr(void *arg) { struct vsbic_softc *sc = arg; struct bpp_chan *chan; uint ch; splassert(IPL_BIO); /* * There is no easy way to know which channel caused the interrupt * (unless we register as many different interrupts as channels...), * so check all of them. * * This means that we will sometimes dequeue commands before * receiving their channel interrupts... therefore, we always * claim the interrupt for the kernel not to be confused. */ /* * Check the reset channel first, then check all real target channels. */ chan = &sc->sc_chan[VSBIC_RESET_CHANNEL(sc)]; (void)vsbic_channel_intr(sc, chan); for (ch = 0; ch < 8; ch++) { if (ch == VSBIC_RESET_CHANNEL(sc)) continue; chan = &sc->sc_chan[ch]; (void)vsbic_channel_intr(sc, chan); } return 1; } int vsbic_channel_intr(struct vsbic_softc *sc, struct bpp_chan *chan) { struct vsbic_cmd *cmd; struct vsbic_ccb *ccb; struct scsi_xfer *xs; uint32_t xferlen; uint error, status; cmd = vsbic_dequeue_cmd(sc, chan); if (cmd == NULL) return 0; /* retrieve associated ccb, if any */ ccb = vsbic_cmd_ccb(sc, cmd); xferlen = (betoh16(cmd->pkt.sts_xfer_high) << 16) | betoh16(cmd->pkt.sts_xfer_low); error = cmd->pkt.sts_error; status = betoh16(cmd->pkt.sts_status); #ifdef VSBIC_DEBUG printf("channel %d: cmd %p ccb %p xfer %x error %02x\n", chan->ch->ch_num, cmd, ccb, xferlen, error); printf(" status %04x sts %02x parm3 %x", status, cmd->scsi.status, cmd->pkt.sts_parm3); if (error == ERR_OK && cmd->pkt.sts_recovered != ERR_OK) printf(" recovered error %02x tries %d", cmd->pkt.sts_recovered, cmd->pkt.sts_retries); printf("\n"); #endif if (ccb != NULL) { xs = ccb->ccb_xs; if (ISSET(ccb->ccb_xsflags, SCSI_DATA_IN | SCSI_DATA_OUT)) { if (!ISSET(ccb->ccb_flags, CCBF_SENSE)) xs->resid = xs->datalen - xferlen; bus_dmamap_sync(sc->sc_dmat, ccb->ccb_dmamap, 0, ccb->ccb_dmalen, ISSET(ccb->ccb_xsflags, SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->sc_dmat, ccb->ccb_dmamap); } if (xs->error == XS_NOERROR) { switch (error) { case ERR_SELECT_TIMEOUT: xs->error = XS_SELTIMEOUT; break; case ERR_BUS_RESET: xs->error = XS_RESET; break; case ERR_REQUEST_SENSE_FAILED: xs->error = XS_SHORTSENSE; break; case ERR_INVALID_XFER_COUNT: if (status == ERR_INCOMPLETE_DATA_TRANSFER) xs->error = XS_NOERROR; else xs->error = XS_DRIVER_STUFFUP; break; case ERR_OK: xs->error = XS_NOERROR; xs->status = cmd->scsi.status; break; default: xs->error = XS_DRIVER_STUFFUP; break; } } } vsbic_put_cmd(sc, cmd); if (ccb != NULL) { if (ISSET(ccb->ccb_xsflags, SCSI_POLL)) { SET(xs->flags, ITSDONE); /* caller will invoke vsbic_wrapup() later */ } else vsbic_wrapup(sc, ccb); } return 1; }