/*- * Copyright (c) 1997 by Simon Shapiro * All Rights Reserved * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ident "$FreeBSD$" #include __FBSDID("$FreeBSD$"); /* * dpt_scsi.c: SCSI dependant code for the DPT driver * * credits: Assisted by Mike Neuffer in the early low level DPT code * Thanx to Mark Salyzyn of DPT for his assistance. * Special thanx to Justin Gibbs for invaluable help in * making this driver look and work like a FreeBSD component. * Last but not least, many thanx to UCB and the FreeBSD * team for creating and maintaining such a wonderful O/S. * * TODO: * Add ISA probe code. * * Add driver-level RAID-0. This will allow interoperability with * NiceTry, M$-Doze, Win-Dog, Slowlaris, etc., in recognizing RAID * arrays that span controllers (Wow!). */ #define _DPT_C_ #include "opt_dpt.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* dpt_isa.c, dpt_eisa.c, and dpt_pci.c need this in a central place */ int dpt_controllers_present; devclass_t dpt_devclass; #define microtime_now dpt_time_now() #define dpt_inl(dpt, port) \ bus_space_read_4((dpt)->tag, (dpt)->bsh, port) #define dpt_inb(dpt, port) \ bus_space_read_1((dpt)->tag, (dpt)->bsh, port) #define dpt_outl(dpt, port, value) \ bus_space_write_4((dpt)->tag, (dpt)->bsh, port, value) #define dpt_outb(dpt, port, value) \ bus_space_write_1((dpt)->tag, (dpt)->bsh, port, value) /* * These will have to be setup by parameters passed at boot/load time. For * perfromance reasons, we make them constants for the time being. */ #define dpt_min_segs DPT_MAX_SEGS #define dpt_max_segs DPT_MAX_SEGS /* Definitions for our use of the SIM private CCB area */ #define ccb_dccb_ptr spriv_ptr0 #define ccb_dpt_ptr spriv_ptr1 /* ================= Private Inline Function declarations ===================*/ static __inline int dpt_just_reset(dpt_softc_t * dpt); static __inline int dpt_raid_busy(dpt_softc_t * dpt); static __inline int dpt_pio_wait (u_int32_t, u_int, u_int, u_int); static __inline int dpt_wait(dpt_softc_t *dpt, u_int bits, u_int state); static __inline struct dpt_ccb* dptgetccb(struct dpt_softc *dpt); static __inline void dptfreeccb(struct dpt_softc *dpt, struct dpt_ccb *dccb); static __inline bus_addr_t dptccbvtop(struct dpt_softc *dpt, struct dpt_ccb *dccb); static __inline int dpt_send_immediate(dpt_softc_t *dpt, eata_ccb_t *cmd_block, u_int32_t cmd_busaddr, u_int retries, u_int ifc, u_int code, u_int code2); /* ==================== Private Function declarations =======================*/ static void dptmapmem(void *arg, bus_dma_segment_t *segs, int nseg, int error); static struct sg_map_node* dptallocsgmap(struct dpt_softc *dpt); static int dptallocccbs(dpt_softc_t *dpt); static int dpt_get_conf(dpt_softc_t *dpt, dpt_ccb_t *dccb, u_int32_t dccb_busaddr, u_int size, u_int page, u_int target, int extent); static void dpt_detect_cache(dpt_softc_t *dpt, dpt_ccb_t *dccb, u_int32_t dccb_busaddr, u_int8_t *buff); static void dpt_poll(struct cam_sim *sim); static void dptexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error); static void dpt_action(struct cam_sim *sim, union ccb *ccb); static int dpt_send_eata_command(dpt_softc_t *dpt, eata_ccb_t *cmd, u_int32_t cmd_busaddr, u_int command, u_int retries, u_int ifc, u_int code, u_int code2); static void dptprocesserror(dpt_softc_t *dpt, dpt_ccb_t *dccb, union ccb *ccb, u_int hba_stat, u_int scsi_stat, u_int32_t resid); static void dpttimeout(void *arg); static void dptshutdown(void *arg, int howto); /* ================= Private Inline Function definitions ====================*/ static __inline int dpt_just_reset(dpt_softc_t * dpt) { if ((dpt_inb(dpt, 2) == 'D') && (dpt_inb(dpt, 3) == 'P') && (dpt_inb(dpt, 4) == 'T') && (dpt_inb(dpt, 5) == 'H')) return (1); else return (0); } static __inline int dpt_raid_busy(dpt_softc_t * dpt) { if ((dpt_inb(dpt, 0) == 'D') && (dpt_inb(dpt, 1) == 'P') && (dpt_inb(dpt, 2) == 'T')) return (1); else return (0); } static __inline int dpt_pio_wait (u_int32_t base, u_int reg, u_int bits, u_int state) { int i; u_int c; for (i = 0; i < 20000; i++) { /* wait 20ms for not busy */ c = inb(base + reg) & bits; if (!(c == state)) return (0); else DELAY(50); } return (-1); } static __inline int dpt_wait(dpt_softc_t *dpt, u_int bits, u_int state) { int i; u_int c; for (i = 0; i < 20000; i++) { /* wait 20ms for not busy */ c = dpt_inb(dpt, HA_RSTATUS) & bits; if (c == state) return (0); else DELAY(50); } return (-1); } static __inline struct dpt_ccb* dptgetccb(struct dpt_softc *dpt) { struct dpt_ccb* dccb; int s; s = splcam(); if ((dccb = SLIST_FIRST(&dpt->free_dccb_list)) != NULL) { SLIST_REMOVE_HEAD(&dpt->free_dccb_list, links); dpt->free_dccbs--; } else if (dpt->total_dccbs < dpt->max_dccbs) { dptallocccbs(dpt); dccb = SLIST_FIRST(&dpt->free_dccb_list); if (dccb == NULL) printf("dpt%d: Can't malloc DCCB\n", dpt->unit); else { SLIST_REMOVE_HEAD(&dpt->free_dccb_list, links); dpt->free_dccbs--; } } splx(s); return (dccb); } static __inline void dptfreeccb(struct dpt_softc *dpt, struct dpt_ccb *dccb) { int s; s = splcam(); if ((dccb->state & DCCB_ACTIVE) != 0) LIST_REMOVE(&dccb->ccb->ccb_h, sim_links.le); if ((dccb->state & DCCB_RELEASE_SIMQ) != 0) dccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ; else if (dpt->resource_shortage != 0 && (dccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { dccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ; dpt->resource_shortage = FALSE; } dccb->state = DCCB_FREE; SLIST_INSERT_HEAD(&dpt->free_dccb_list, dccb, links); ++dpt->free_dccbs; splx(s); } static __inline bus_addr_t dptccbvtop(struct dpt_softc *dpt, struct dpt_ccb *dccb) { return (dpt->dpt_ccb_busbase + (u_int32_t)((caddr_t)dccb - (caddr_t)dpt->dpt_dccbs)); } static __inline struct dpt_ccb * dptccbptov(struct dpt_softc *dpt, bus_addr_t busaddr) { return (dpt->dpt_dccbs + ((struct dpt_ccb *)busaddr - (struct dpt_ccb *)dpt->dpt_ccb_busbase)); } /* * Send a command for immediate execution by the DPT * See above function for IMPORTANT notes. */ static __inline int dpt_send_immediate(dpt_softc_t *dpt, eata_ccb_t *cmd_block, u_int32_t cmd_busaddr, u_int retries, u_int ifc, u_int code, u_int code2) { return (dpt_send_eata_command(dpt, cmd_block, cmd_busaddr, EATA_CMD_IMMEDIATE, retries, ifc, code, code2)); } /* ===================== Private Function definitions =======================*/ static void dptmapmem(void *arg, bus_dma_segment_t *segs, int nseg, int error) { bus_addr_t *busaddrp; busaddrp = (bus_addr_t *)arg; *busaddrp = segs->ds_addr; } static struct sg_map_node * dptallocsgmap(struct dpt_softc *dpt) { struct sg_map_node *sg_map; sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT); if (sg_map == NULL) return (NULL); /* Allocate S/G space for the next batch of CCBS */ if (bus_dmamem_alloc(dpt->sg_dmat, (void **)&sg_map->sg_vaddr, BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) { free(sg_map, M_DEVBUF); return (NULL); } (void)bus_dmamap_load(dpt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr, PAGE_SIZE, dptmapmem, &sg_map->sg_physaddr, /*flags*/0); SLIST_INSERT_HEAD(&dpt->sg_maps, sg_map, links); return (sg_map); } /* * Allocate another chunk of CCB's. Return count of entries added. * Assumed to be called at splcam(). */ static int dptallocccbs(dpt_softc_t *dpt) { struct dpt_ccb *next_ccb; struct sg_map_node *sg_map; bus_addr_t physaddr; dpt_sg_t *segs; int newcount; int i; next_ccb = &dpt->dpt_dccbs[dpt->total_dccbs]; if (next_ccb == dpt->dpt_dccbs) { /* * First time through. Re-use the S/G * space we allocated for initialization * CCBS. */ sg_map = SLIST_FIRST(&dpt->sg_maps); } else { sg_map = dptallocsgmap(dpt); } if (sg_map == NULL) return (0); segs = sg_map->sg_vaddr; physaddr = sg_map->sg_physaddr; newcount = (PAGE_SIZE / (dpt->sgsize * sizeof(dpt_sg_t))); for (i = 0; dpt->total_dccbs < dpt->max_dccbs && i < newcount; i++) { int error; error = bus_dmamap_create(dpt->buffer_dmat, /*flags*/0, &next_ccb->dmamap); if (error != 0) break; next_ccb->sg_list = segs; next_ccb->sg_busaddr = htonl(physaddr); next_ccb->eata_ccb.cp_dataDMA = htonl(physaddr); next_ccb->eata_ccb.cp_statDMA = htonl(dpt->sp_physaddr); next_ccb->eata_ccb.cp_reqDMA = htonl(dptccbvtop(dpt, next_ccb) + offsetof(struct dpt_ccb, sense_data)); next_ccb->eata_ccb.cp_busaddr = dpt->dpt_ccb_busend; next_ccb->state = DCCB_FREE; next_ccb->tag = dpt->total_dccbs; SLIST_INSERT_HEAD(&dpt->free_dccb_list, next_ccb, links); segs += dpt->sgsize; physaddr += (dpt->sgsize * sizeof(dpt_sg_t)); dpt->dpt_ccb_busend += sizeof(*next_ccb); next_ccb++; dpt->total_dccbs++; } return (i); } dpt_conf_t * dpt_pio_get_conf (u_int32_t base) { static dpt_conf_t * conf; u_int16_t * p; int i; /* * Allocate a dpt_conf_t */ if (!conf) { conf = (dpt_conf_t *)malloc(sizeof(dpt_conf_t), M_DEVBUF, M_NOWAIT); } /* * If we didn't get one then we probably won't ever get one. */ if (!conf) { printf("dpt: unable to allocate dpt_conf_t\n"); return (NULL); } /* * If we have one, clean it up. */ bzero(conf, sizeof(dpt_conf_t)); /* * Reset the controller. */ outb((base + HA_WCOMMAND), EATA_CMD_RESET); /* * Wait for the controller to become ready. * For some reason there can be -no- delays after calling reset * before we wait on ready status. */ if (dpt_pio_wait(base, HA_RSTATUS, HA_SBUSY, 0)) { printf("dpt: timeout waiting for controller to become ready\n"); return (NULL); } if (dpt_pio_wait(base, HA_RAUXSTAT, HA_ABUSY, 0)) { printf("dpt: timetout waiting for adapter ready.\n"); return (NULL); } /* * Send the PIO_READ_CONFIG command. */ outb((base + HA_WCOMMAND), EATA_CMD_PIO_READ_CONFIG); /* * Read the data into the struct. */ p = (u_int16_t *)conf; for (i = 0; i < (sizeof(dpt_conf_t) / 2); i++) { if (dpt_pio_wait(base, HA_RSTATUS, HA_SDRQ, 0)) { if (bootverbose) printf("dpt: timeout in data read.\n"); return (NULL); } (*p) = inw(base + HA_RDATA); p++; } if (inb(base + HA_RSTATUS) & HA_SERROR) { if (bootverbose) printf("dpt: error reading configuration data.\n"); return (NULL); } #define BE_EATA_SIGNATURE 0x45415441 #define LE_EATA_SIGNATURE 0x41544145 /* * Test to see if we have a valid card. */ if ((conf->signature == BE_EATA_SIGNATURE) || (conf->signature == LE_EATA_SIGNATURE)) { while (inb(base + HA_RSTATUS) & HA_SDRQ) { inw(base + HA_RDATA); } return (conf); } return (NULL); } /* * Read a configuration page into the supplied dpt_cont_t buffer. */ static int dpt_get_conf(dpt_softc_t *dpt, dpt_ccb_t *dccb, u_int32_t dccb_busaddr, u_int size, u_int page, u_int target, int extent) { eata_ccb_t *cp; u_int8_t status; int ndx; int ospl; int result; cp = &dccb->eata_ccb; bzero((void *)(uintptr_t)(volatile void *)dpt->sp, sizeof(*dpt->sp)); cp->Interpret = 1; cp->DataIn = 1; cp->Auto_Req_Sen = 1; cp->reqlen = sizeof(struct scsi_sense_data); cp->cp_id = target; cp->cp_LUN = 0; /* In the EATA packet */ cp->cp_lun = 0; /* In the SCSI command */ cp->cp_scsi_cmd = INQUIRY; cp->cp_len = size; cp->cp_extent = extent; cp->cp_page = page; cp->cp_channel = 0; /* DNC, Interpret mode is set */ cp->cp_identify = 1; cp->cp_datalen = htonl(size); ospl = splcam(); /* * This could be a simple for loop, but we suspected the compiler To * have optimized it a bit too much. Wait for the controller to * become ready */ while (((status = dpt_inb(dpt, HA_RSTATUS)) != (HA_SREADY | HA_SSC) && (status != (HA_SREADY | HA_SSC | HA_SERROR)) && (status != (HA_SDRDY | HA_SERROR | HA_SDRQ))) || (dpt_wait(dpt, HA_SBUSY, 0))) { /* * RAID Drives still Spinning up? (This should only occur if * the DPT controller is in a NON PC (PCI?) platform). */ if (dpt_raid_busy(dpt)) { printf("dpt%d WARNING: Get_conf() RSUS failed.\n", dpt->unit); splx(ospl); return (0); } } DptStat_Reset_BUSY(dpt->sp); /* * XXXX We might want to do something more clever than aborting at * this point, like resetting (rebooting) the controller and trying * again. */ if ((result = dpt_send_eata_command(dpt, cp, dccb_busaddr, EATA_CMD_DMA_SEND_CP, 10000, 0, 0, 0)) != 0) { printf("dpt%d WARNING: Get_conf() failed (%d) to send " "EATA_CMD_DMA_READ_CONFIG\n", dpt->unit, result); splx(ospl); return (0); } /* Wait for two seconds for a response. This can be slow */ for (ndx = 0; (ndx < 20000) && !((status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ); ndx++) { DELAY(50); } /* Grab the status and clear interrupts */ status = dpt_inb(dpt, HA_RSTATUS); splx(ospl); /* * Check the status carefully. Return only if the * command was successful. */ if (((status & HA_SERROR) == 0) && (dpt->sp->hba_stat == 0) && (dpt->sp->scsi_stat == 0) && (dpt->sp->residue_len == 0)) return (0); if (dpt->sp->scsi_stat == SCSI_STATUS_CHECK_COND) return (0); return (1); } /* Detect Cache parameters and size */ static void dpt_detect_cache(dpt_softc_t *dpt, dpt_ccb_t *dccb, u_int32_t dccb_busaddr, u_int8_t *buff) { eata_ccb_t *cp; u_int8_t *param; int bytes; int result; int ospl; int ndx; u_int8_t status; /* * Default setting, for best perfromance.. * This is what virtually all cards default to.. */ dpt->cache_type = DPT_CACHE_WRITEBACK; dpt->cache_size = 0; cp = &dccb->eata_ccb; bzero((void *)(uintptr_t)(volatile void *)dpt->sp, sizeof(dpt->sp)); bzero(buff, 512); /* Setup the command structure */ cp->Interpret = 1; cp->DataIn = 1; cp->Auto_Req_Sen = 1; cp->reqlen = sizeof(struct scsi_sense_data); cp->cp_id = 0; /* who cares? The HBA will interpret.. */ cp->cp_LUN = 0; /* In the EATA packet */ cp->cp_lun = 0; /* In the SCSI command */ cp->cp_channel = 0; cp->cp_scsi_cmd = EATA_CMD_DMA_SEND_CP; cp->cp_len = 56; cp->cp_extent = 0; cp->cp_page = 0; cp->cp_identify = 1; cp->cp_dispri = 1; /* * Build the EATA Command Packet structure * for a Log Sense Command. */ cp->cp_cdb[0] = 0x4d; cp->cp_cdb[1] = 0x0; cp->cp_cdb[2] = 0x40 | 0x33; cp->cp_cdb[7] = 1; cp->cp_datalen = htonl(512); ospl = splcam(); result = dpt_send_eata_command(dpt, cp, dccb_busaddr, EATA_CMD_DMA_SEND_CP, 10000, 0, 0, 0); if (result != 0) { printf("dpt%d WARNING: detect_cache() failed (%d) to send " "EATA_CMD_DMA_SEND_CP\n", dpt->unit, result); splx(ospl); return; } /* Wait for two seconds for a response. This can be slow... */ for (ndx = 0; (ndx < 20000) && !((status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ); ndx++) { DELAY(50); } /* Grab the status and clear interrupts */ status = dpt_inb(dpt, HA_RSTATUS); splx(ospl); /* * Sanity check */ if (buff[0] != 0x33) { return; } bytes = DPT_HCP_LENGTH(buff); param = DPT_HCP_FIRST(buff); if (DPT_HCP_CODE(param) != 1) { /* * DPT Log Page layout error */ printf("dpt%d: NOTICE: Log Page (1) layout error\n", dpt->unit); return; } if (!(param[4] & 0x4)) { dpt->cache_type = DPT_NO_CACHE; return; } while (DPT_HCP_CODE(param) != 6) { param = DPT_HCP_NEXT(param); if ((param < buff) || (param >= &buff[bytes])) { return; } } if (param[4] & 0x2) { /* * Cache disabled */ dpt->cache_type = DPT_NO_CACHE; return; } if (param[4] & 0x4) { dpt->cache_type = DPT_CACHE_WRITETHROUGH; } /* XXX This isn't correct. This log parameter only has two bytes.... */ #if 0 dpt->cache_size = param[5] | (param[6] << 8) | (param[7] << 16) | (param[8] << 24); #endif } static void dpt_poll(struct cam_sim *sim) { dpt_intr(cam_sim_softc(sim)); } static void dptexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) { struct dpt_ccb *dccb; union ccb *ccb; struct dpt_softc *dpt; int s; dccb = (struct dpt_ccb *)arg; ccb = dccb->ccb; dpt = (struct dpt_softc *)ccb->ccb_h.ccb_dpt_ptr; if (error != 0) { if (error != EFBIG) printf("dpt%d: Unexepected error 0x%x returned from " "bus_dmamap_load\n", dpt->unit, error); if (ccb->ccb_h.status == CAM_REQ_INPROG) { xpt_freeze_devq(ccb->ccb_h.path, /*count*/1); ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN; } dptfreeccb(dpt, dccb); xpt_done(ccb); return; } if (nseg != 0) { dpt_sg_t *sg; bus_dma_segment_t *end_seg; bus_dmasync_op_t op; end_seg = dm_segs + nseg; /* Copy the segments into our SG list */ sg = dccb->sg_list; while (dm_segs < end_seg) { sg->seg_len = htonl(dm_segs->ds_len); sg->seg_addr = htonl(dm_segs->ds_addr); sg++; dm_segs++; } if (nseg > 1) { dccb->eata_ccb.scatter = 1; dccb->eata_ccb.cp_dataDMA = dccb->sg_busaddr; dccb->eata_ccb.cp_datalen = htonl(nseg * sizeof(dpt_sg_t)); } else { dccb->eata_ccb.cp_dataDMA = dccb->sg_list[0].seg_addr; dccb->eata_ccb.cp_datalen = dccb->sg_list[0].seg_len; } if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) op = BUS_DMASYNC_PREREAD; else op = BUS_DMASYNC_PREWRITE; bus_dmamap_sync(dpt->buffer_dmat, dccb->dmamap, op); } else { dccb->eata_ccb.cp_dataDMA = 0; dccb->eata_ccb.cp_datalen = 0; } s = splcam(); /* * Last time we need to check if this CCB needs to * be aborted. */ if (ccb->ccb_h.status != CAM_REQ_INPROG) { if (nseg != 0) bus_dmamap_unload(dpt->buffer_dmat, dccb->dmamap); dptfreeccb(dpt, dccb); xpt_done(ccb); splx(s); return; } dccb->state |= DCCB_ACTIVE; ccb->ccb_h.status |= CAM_SIM_QUEUED; LIST_INSERT_HEAD(&dpt->pending_ccb_list, &ccb->ccb_h, sim_links.le); ccb->ccb_h.timeout_ch = timeout(dpttimeout, (caddr_t)dccb, (ccb->ccb_h.timeout * hz) / 1000); if (dpt_send_eata_command(dpt, &dccb->eata_ccb, dccb->eata_ccb.cp_busaddr, EATA_CMD_DMA_SEND_CP, 0, 0, 0, 0) != 0) { ccb->ccb_h.status = CAM_NO_HBA; /* HBA dead or just busy?? */ if (nseg != 0) bus_dmamap_unload(dpt->buffer_dmat, dccb->dmamap); dptfreeccb(dpt, dccb); xpt_done(ccb); } splx(s); } static void dpt_action(struct cam_sim *sim, union ccb *ccb) { struct dpt_softc *dpt; CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("dpt_action\n")); dpt = (struct dpt_softc *)cam_sim_softc(sim); if ((dpt->state & DPT_HA_SHUTDOWN_ACTIVE) != 0) { xpt_print_path(ccb->ccb_h.path); printf("controller is shutdown. Aborting CCB.\n"); ccb->ccb_h.status = CAM_NO_HBA; xpt_done(ccb); return; } switch (ccb->ccb_h.func_code) { /* Common cases first */ case XPT_SCSI_IO: /* Execute the requested I/O operation */ { struct ccb_scsiio *csio; struct ccb_hdr *ccbh; struct dpt_ccb *dccb; struct eata_ccb *eccb; csio = &ccb->csio; ccbh = &ccb->ccb_h; /* Max CDB length is 12 bytes */ if (csio->cdb_len > 12) { ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); return; } if ((dccb = dptgetccb(dpt)) == NULL) { int s; s = splcam(); dpt->resource_shortage = 1; splx(s); xpt_freeze_simq(sim, /*count*/1); ccb->ccb_h.status = CAM_REQUEUE_REQ; xpt_done(ccb); return; } eccb = &dccb->eata_ccb; /* Link dccb and ccb so we can find one from the other */ dccb->ccb = ccb; ccb->ccb_h.ccb_dccb_ptr = dccb; ccb->ccb_h.ccb_dpt_ptr = dpt; /* * Explicitly set all flags so that the compiler can * be smart about setting them. */ eccb->SCSI_Reset = 0; eccb->HBA_Init = 0; eccb->Auto_Req_Sen = (ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) ? 0 : 1; eccb->scatter = 0; eccb->Quick = 0; eccb->Interpret = ccb->ccb_h.target_id == dpt->hostid[cam_sim_bus(sim)] ? 1 : 0; eccb->DataOut = (ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0; eccb->DataIn = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0; eccb->reqlen = csio->sense_len; eccb->cp_id = ccb->ccb_h.target_id; eccb->cp_channel = cam_sim_bus(sim); eccb->cp_LUN = ccb->ccb_h.target_lun; eccb->cp_luntar = 0; eccb->cp_dispri = (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) ? 0 : 1; eccb->cp_identify = 1; if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0 && csio->tag_action != CAM_TAG_ACTION_NONE) { eccb->cp_msg[0] = csio->tag_action; eccb->cp_msg[1] = dccb->tag; } else { eccb->cp_msg[0] = 0; eccb->cp_msg[1] = 0; } eccb->cp_msg[2] = 0; if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0) { if ((ccb->ccb_h.flags & CAM_CDB_PHYS) == 0) { bcopy(csio->cdb_io.cdb_ptr, eccb->cp_cdb, csio->cdb_len); } else { /* I guess I could map it in... */ ccb->ccb_h.status = CAM_REQ_INVALID; dptfreeccb(dpt, dccb); xpt_done(ccb); return; } } else { bcopy(csio->cdb_io.cdb_bytes, eccb->cp_cdb, csio->cdb_len); } /* * If we have any data to send with this command, * map it into bus space. */ /* Only use S/G if there is a transfer */ if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { if ((ccbh->flags & CAM_SCATTER_VALID) == 0) { /* * We've been given a pointer * to a single buffer. */ if ((ccbh->flags & CAM_DATA_PHYS) == 0) { int s; int error; s = splsoftvm(); error = bus_dmamap_load(dpt->buffer_dmat, dccb->dmamap, csio->data_ptr, csio->dxfer_len, dptexecuteccb, dccb, /*flags*/0); if (error == EINPROGRESS) { /* * So as to maintain ordering, * freeze the controller queue * until our mapping is * returned. */ xpt_freeze_simq(sim, 1); dccb->state |= CAM_RELEASE_SIMQ; } splx(s); } else { struct bus_dma_segment seg; /* Pointer to physical buffer */ seg.ds_addr = (bus_addr_t)csio->data_ptr; seg.ds_len = csio->dxfer_len; dptexecuteccb(dccb, &seg, 1, 0); } } else { struct bus_dma_segment *segs; if ((ccbh->flags & CAM_DATA_PHYS) != 0) panic("dpt_action - Physical " "segment pointers " "unsupported"); if ((ccbh->flags&CAM_SG_LIST_PHYS)==0) panic("dpt_action - Virtual " "segment addresses " "unsupported"); /* Just use the segments provided */ segs = (struct bus_dma_segment *)csio->data_ptr; dptexecuteccb(dccb, segs, csio->sglist_cnt, 0); } } else { /* * XXX JGibbs. * Does it want them both on or both off? * CAM_DIR_NONE is both on, so this code can * be removed if this is also what the DPT * exptects. */ eccb->DataOut = 0; eccb->DataIn = 0; dptexecuteccb(dccb, NULL, 0, 0); } break; } case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */ case XPT_ABORT: /* Abort the specified CCB */ /* XXX Implement */ ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; case XPT_SET_TRAN_SETTINGS: { ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; xpt_done(ccb); break; } case XPT_GET_TRAN_SETTINGS: /* Get default/user set transfer settings for the target */ { struct ccb_trans_settings *cts; u_int target_mask; cts = &ccb->cts; target_mask = 0x01 << ccb->ccb_h.target_id; if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) { cts->flags = CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB; cts->bus_width = (dpt->max_id > 7) ? MSG_EXT_WDTR_BUS_8_BIT : MSG_EXT_WDTR_BUS_16_BIT; cts->sync_period = 25; /* 10MHz */ if (cts->sync_period != 0) cts->sync_offset = 15; cts->valid = CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_SYNC_OFFSET_VALID | CCB_TRANS_BUS_WIDTH_VALID | CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID; ccb->ccb_h.status = CAM_REQ_CMP; } else { ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; } xpt_done(ccb); break; } case XPT_CALC_GEOMETRY: { /* * XXX Use Adaptec translation until I find out how to * get this information from the card. */ cam_calc_geometry(&ccb->ccg, /*extended*/1); xpt_done(ccb); break; } case XPT_RESET_BUS: /* Reset the specified SCSI bus */ { /* XXX Implement */ ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_TERM_IO: /* Terminate the I/O process */ /* XXX Implement */ ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; case XPT_PATH_INQ: /* Path routing inquiry */ { struct ccb_pathinq *cpi = &ccb->cpi; cpi->version_num = 1; cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE; if (dpt->max_id > 7) cpi->hba_inquiry |= PI_WIDE_16; cpi->target_sprt = 0; cpi->hba_misc = 0; cpi->hba_eng_cnt = 0; cpi->max_target = dpt->max_id; cpi->max_lun = dpt->max_lun; cpi->initiator_id = dpt->hostid[cam_sim_bus(sim)]; cpi->bus_id = cam_sim_bus(sim); cpi->base_transfer_speed = 3300; strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); strncpy(cpi->hba_vid, "DPT", HBA_IDLEN); strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); cpi->unit_number = cam_sim_unit(sim); cpi->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } default: ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); break; } } /* * This routine will try to send an EATA command to the DPT HBA. * It will, by default, try 20,000 times, waiting 50us between tries. * It returns 0 on success and 1 on failure. * It is assumed to be called at splcam(). */ static int dpt_send_eata_command(dpt_softc_t *dpt, eata_ccb_t *cmd_block, u_int32_t cmd_busaddr, u_int command, u_int retries, u_int ifc, u_int code, u_int code2) { u_int loop; if (!retries) retries = 20000; /* * I hate this polling nonsense. Wish there was a way to tell the DPT * to go get commands at its own pace, or to interrupt when ready. * In the mean time we will measure how many itterations it really * takes. */ for (loop = 0; loop < retries; loop++) { if ((dpt_inb(dpt, HA_RAUXSTAT) & HA_ABUSY) == 0) break; else DELAY(50); } if (loop < retries) { #ifdef DPT_MEASURE_PERFORMANCE if (loop > dpt->performance.max_eata_tries) dpt->performance.max_eata_tries = loop; if (loop < dpt->performance.min_eata_tries) dpt->performance.min_eata_tries = loop; #endif } else { #ifdef DPT_MEASURE_PERFORMANCE ++dpt->performance.command_too_busy; #endif return (1); } /* The controller is alive, advance the wedge timer */ #ifdef DPT_RESET_HBA dpt->last_contact = microtime_now; #endif if (cmd_block == NULL) cmd_busaddr = 0; #if (BYTE_ORDER == BIG_ENDIAN) else { cmd_busaddr = ((cmd_busaddr >> 24) & 0xFF) | ((cmd_busaddr >> 16) & 0xFF) | ((cmd_busaddr >> 8) & 0xFF) | (cmd_busaddr & 0xFF); } #endif /* And now the address */ dpt_outl(dpt, HA_WDMAADDR, cmd_busaddr); if (command == EATA_CMD_IMMEDIATE) { if (cmd_block == NULL) { dpt_outb(dpt, HA_WCODE2, code2); dpt_outb(dpt, HA_WCODE, code); } dpt_outb(dpt, HA_WIFC, ifc); } dpt_outb(dpt, HA_WCOMMAND, command); return (0); } /* ==================== Exported Function definitions =======================*/ void dpt_alloc(device_t dev) { dpt_softc_t *dpt = device_get_softc(dev); int i; dpt->tag = rman_get_bustag(dpt->io_res); dpt->bsh = rman_get_bushandle(dpt->io_res) + dpt->io_offset; dpt->unit = device_get_unit(dev); SLIST_INIT(&dpt->free_dccb_list); LIST_INIT(&dpt->pending_ccb_list); for (i = 0; i < MAX_CHANNELS; i++) dpt->resetlevel[i] = DPT_HA_OK; #ifdef DPT_MEASURE_PERFORMANCE dpt_reset_performance(dpt); #endif /* DPT_MEASURE_PERFORMANCE */ return; } void dpt_free(struct dpt_softc *dpt) { switch (dpt->init_level) { default: case 5: bus_dmamap_unload(dpt->dccb_dmat, dpt->dccb_dmamap); case 4: bus_dmamem_free(dpt->dccb_dmat, dpt->dpt_dccbs, dpt->dccb_dmamap); bus_dmamap_destroy(dpt->dccb_dmat, dpt->dccb_dmamap); case 3: bus_dma_tag_destroy(dpt->dccb_dmat); case 2: bus_dma_tag_destroy(dpt->buffer_dmat); case 1: { struct sg_map_node *sg_map; while ((sg_map = SLIST_FIRST(&dpt->sg_maps)) != NULL) { SLIST_REMOVE_HEAD(&dpt->sg_maps, links); bus_dmamap_unload(dpt->sg_dmat, sg_map->sg_dmamap); bus_dmamem_free(dpt->sg_dmat, sg_map->sg_vaddr, sg_map->sg_dmamap); free(sg_map, M_DEVBUF); } bus_dma_tag_destroy(dpt->sg_dmat); } case 0: break; } } int dpt_alloc_resources (device_t dev) { dpt_softc_t * dpt; int error; dpt = device_get_softc(dev); dpt->io_res = bus_alloc_resource_any(dev, dpt->io_type, &dpt->io_rid, RF_ACTIVE); if (dpt->io_res == NULL) { device_printf(dev, "No I/O space?!\n"); error = ENOMEM; goto bad; } dpt->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &dpt->irq_rid, RF_ACTIVE); if (dpt->irq_res == NULL) { device_printf(dev, "No IRQ!\n"); error = ENOMEM; goto bad; } return (0); bad: return(error); } void dpt_release_resources (device_t dev) { struct dpt_softc * dpt; dpt = device_get_softc(dev); if (dpt->ih) bus_teardown_intr(dev, dpt->irq_res, dpt->ih); if (dpt->io_res) bus_release_resource(dev, dpt->io_type, dpt->io_rid, dpt->io_res); if (dpt->irq_res) bus_release_resource(dev, SYS_RES_IRQ, dpt->irq_rid, dpt->irq_res); if (dpt->drq_res) bus_release_resource(dev, SYS_RES_DRQ, dpt->drq_rid, dpt->drq_res); return; } static u_int8_t string_sizes[] = { sizeof(((dpt_inq_t*)NULL)->vendor), sizeof(((dpt_inq_t*)NULL)->modelNum), sizeof(((dpt_inq_t*)NULL)->firmware), sizeof(((dpt_inq_t*)NULL)->protocol), }; int dpt_init(struct dpt_softc *dpt) { dpt_conf_t conf; struct sg_map_node *sg_map; dpt_ccb_t *dccb; u_int8_t *strp; int index; int i; int retval; dpt->init_level = 0; SLIST_INIT(&dpt->sg_maps); #ifdef DPT_RESET_BOARD printf("dpt%d: resetting HBA\n", dpt->unit); dpt_outb(dpt, HA_WCOMMAND, EATA_CMD_RESET); DELAY(750000); /* XXX Shouldn't we poll a status register or something??? */ #endif /* DMA tag for our S/G structures. We allocate in page sized chunks */ if (bus_dma_tag_create( /* parent */ dpt->parent_dmat, /* alignment */ 1, /* boundary */ 0, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ BUS_SPACE_MAXADDR, /* filter */ NULL, /* filterarg */ NULL, /* maxsize */ PAGE_SIZE, /* nsegments */ 1, /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, /* flags */ 0, /* lockfunc */ busdma_lock_mutex, /* lockarg */ &Giant, &dpt->sg_dmat) != 0) { goto error_exit; } dpt->init_level++; /* * We allocate our DPT ccbs as a contiguous array of bus dma'able * memory. To get the allocation size, we need to know how many * ccbs the card supports. This requires a ccb. We solve this * chicken and egg problem by allocating some re-usable S/G space * up front, and treating it as our status packet, CCB, and target * memory space for these commands. */ sg_map = dptallocsgmap(dpt); if (sg_map == NULL) goto error_exit; dpt->sp = (volatile dpt_sp_t *)sg_map->sg_vaddr; dccb = (struct dpt_ccb *)(uintptr_t)(volatile void *)&dpt->sp[1]; bzero(dccb, sizeof(*dccb)); dpt->sp_physaddr = sg_map->sg_physaddr; dccb->eata_ccb.cp_dataDMA = htonl(sg_map->sg_physaddr + sizeof(dpt_sp_t) + sizeof(*dccb)); dccb->eata_ccb.cp_busaddr = ~0; dccb->eata_ccb.cp_statDMA = htonl(dpt->sp_physaddr); dccb->eata_ccb.cp_reqDMA = htonl(dpt->sp_physaddr + sizeof(*dccb) + offsetof(struct dpt_ccb, sense_data)); /* Okay. Fetch our config */ bzero(&dccb[1], sizeof(conf)); /* data area */ retval = dpt_get_conf(dpt, dccb, sg_map->sg_physaddr + sizeof(dpt_sp_t), sizeof(conf), 0xc1, 7, 1); if (retval != 0) { printf("dpt%d: Failed to get board configuration\n", dpt->unit); return (retval); } bcopy(&dccb[1], &conf, sizeof(conf)); bzero(&dccb[1], sizeof(dpt->board_data)); retval = dpt_get_conf(dpt, dccb, sg_map->sg_physaddr + sizeof(dpt_sp_t), sizeof(dpt->board_data), 0, conf.scsi_id0, 0); if (retval != 0) { printf("dpt%d: Failed to get inquiry information\n", dpt->unit); return (retval); } bcopy(&dccb[1], &dpt->board_data, sizeof(dpt->board_data)); dpt_detect_cache(dpt, dccb, sg_map->sg_physaddr + sizeof(dpt_sp_t), (u_int8_t *)&dccb[1]); switch (ntohl(conf.splen)) { case DPT_EATA_REVA: dpt->EATA_revision = 'a'; break; case DPT_EATA_REVB: dpt->EATA_revision = 'b'; break; case DPT_EATA_REVC: dpt->EATA_revision = 'c'; break; case DPT_EATA_REVZ: dpt->EATA_revision = 'z'; break; default: dpt->EATA_revision = '?'; } dpt->max_id = conf.MAX_ID; dpt->max_lun = conf.MAX_LUN; dpt->irq = conf.IRQ; dpt->dma_channel = (8 - conf.DMA_channel) & 7; dpt->channels = conf.MAX_CHAN + 1; dpt->state |= DPT_HA_OK; if (conf.SECOND) dpt->primary = FALSE; else dpt->primary = TRUE; dpt->more_support = conf.MORE_support; if (strncmp(dpt->board_data.firmware, "07G0", 4) >= 0) dpt->immediate_support = 1; else dpt->immediate_support = 0; dpt->broken_INQUIRY = FALSE; dpt->cplen = ntohl(conf.cplen); dpt->cppadlen = ntohs(conf.cppadlen); dpt->max_dccbs = ntohs(conf.queuesiz); if (dpt->max_dccbs > 256) { printf("dpt%d: Max CCBs reduced from %d to " "256 due to tag algorithm\n", dpt->unit, dpt->max_dccbs); dpt->max_dccbs = 256; } dpt->hostid[0] = conf.scsi_id0; dpt->hostid[1] = conf.scsi_id1; dpt->hostid[2] = conf.scsi_id2; if (conf.SG_64K) dpt->sgsize = 8192; else dpt->sgsize = ntohs(conf.SGsiz); /* We can only get 64k buffers, so don't bother to waste space. */ if (dpt->sgsize < 17 || dpt->sgsize > 32) dpt->sgsize = 32; if (dpt->sgsize > dpt_max_segs) dpt->sgsize = dpt_max_segs; /* DMA tag for mapping buffers into device visible space. */ if (bus_dma_tag_create( /* parent */ dpt->parent_dmat, /* alignment */ 1, /* boundary */ 0, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ BUS_SPACE_MAXADDR, /* filter */ NULL, /* filterarg */ NULL, /* maxsize */ MAXBSIZE, /* nsegments */ dpt->sgsize, /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, /* flags */ BUS_DMA_ALLOCNOW, /* lockfunc */ busdma_lock_mutex, /* lockarg */ &Giant, &dpt->buffer_dmat) != 0) { printf("dpt: bus_dma_tag_create(...,dpt->buffer_dmat) failed\n"); goto error_exit; } dpt->init_level++; /* DMA tag for our ccb structures and interrupt status packet */ if (bus_dma_tag_create( /* parent */ dpt->parent_dmat, /* alignment */ 1, /* boundary */ 0, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ BUS_SPACE_MAXADDR, /* filter */ NULL, /* filterarg */ NULL, /* maxsize */ (dpt->max_dccbs * sizeof(struct dpt_ccb)) + sizeof(dpt_sp_t), /* nsegments */ 1, /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, /* flags */ 0, /* lockfunc */ busdma_lock_mutex, /* lockarg */ &Giant, &dpt->dccb_dmat) != 0) { printf("dpt: bus_dma_tag_create(...,dpt->dccb_dmat) failed\n"); goto error_exit; } dpt->init_level++; /* Allocation for our ccbs and interrupt status packet */ if (bus_dmamem_alloc(dpt->dccb_dmat, (void **)&dpt->dpt_dccbs, BUS_DMA_NOWAIT, &dpt->dccb_dmamap) != 0) { printf("dpt: bus_dmamem_alloc(dpt->dccb_dmat,...) failed\n"); goto error_exit; } dpt->init_level++; /* And permanently map them */ bus_dmamap_load(dpt->dccb_dmat, dpt->dccb_dmamap, dpt->dpt_dccbs, (dpt->max_dccbs * sizeof(struct dpt_ccb)) + sizeof(dpt_sp_t), dptmapmem, &dpt->dpt_ccb_busbase, /*flags*/0); /* Clear them out. */ bzero(dpt->dpt_dccbs, (dpt->max_dccbs * sizeof(struct dpt_ccb)) + sizeof(dpt_sp_t)); dpt->dpt_ccb_busend = dpt->dpt_ccb_busbase; dpt->sp = (dpt_sp_t*)&dpt->dpt_dccbs[dpt->max_dccbs]; dpt->sp_physaddr = dpt->dpt_ccb_busbase + (dpt->max_dccbs * sizeof(dpt_ccb_t)); dpt->init_level++; /* Allocate our first batch of ccbs */ if (dptallocccbs(dpt) == 0) { printf("dpt: dptallocccbs(dpt) == 0\n"); return (2); } /* Prepare for Target Mode */ dpt->target_mode_enabled = 1; /* Nuke excess spaces from inquiry information */ strp = dpt->board_data.vendor; for (i = 0; i < sizeof(string_sizes); i++) { index = string_sizes[i] - 1; while (index && (strp[index] == ' ')) strp[index--] = '\0'; strp += string_sizes[i]; } printf("dpt%d: %.8s %.16s FW Rev. %.4s, ", dpt->unit, dpt->board_data.vendor, dpt->board_data.modelNum, dpt->board_data.firmware); printf("%d channel%s, ", dpt->channels, dpt->channels > 1 ? "s" : ""); if (dpt->cache_type != DPT_NO_CACHE && dpt->cache_size != 0) { printf("%s Cache, ", dpt->cache_type == DPT_CACHE_WRITETHROUGH ? "Write-Through" : "Write-Back"); } printf("%d CCBs\n", dpt->max_dccbs); return (0); error_exit: return (1); } int dpt_attach(dpt_softc_t *dpt) { struct cam_devq *devq; int i; /* * Create the device queue for our SIM. */ devq = cam_simq_alloc(dpt->max_dccbs); if (devq == NULL) return (0); for (i = 0; i < dpt->channels; i++) { /* * Construct our SIM entry */ dpt->sims[i] = cam_sim_alloc(dpt_action, dpt_poll, "dpt", dpt, dpt->unit, /*untagged*/2, /*tagged*/dpt->max_dccbs, devq); if (dpt->sims[i] == NULL) { if (i == 0) cam_simq_free(devq); else printf( "%s(): Unable to attach bus %d " "due to resource shortage\n", __func__, i); break; } if (xpt_bus_register(dpt->sims[i], i) != CAM_SUCCESS) { cam_sim_free(dpt->sims[i], /*free_devq*/i == 0); dpt->sims[i] = NULL; break; } if (xpt_create_path(&dpt->paths[i], /*periph*/NULL, cam_sim_path(dpt->sims[i]), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { xpt_bus_deregister(cam_sim_path(dpt->sims[i])); cam_sim_free(dpt->sims[i], /*free_devq*/i == 0); dpt->sims[i] = NULL; break; } } if (i > 0) EVENTHANDLER_REGISTER(shutdown_final, dptshutdown, dpt, SHUTDOWN_PRI_DEFAULT); return (i); } int dpt_detach (device_t dev) { struct dpt_softc * dpt; int i; dpt = device_get_softc(dev); for (i = 0; i < dpt->channels; i++) { #if 0 xpt_async(AC_LOST_DEVICE, dpt->paths[i], NULL); #endif xpt_free_path(dpt->paths[i]); xpt_bus_deregister(cam_sim_path(dpt->sims[i])); cam_sim_free(dpt->sims[i], /*free_devq*/TRUE); } dptshutdown((void *)dpt, SHUTDOWN_PRI_DEFAULT); dpt_release_resources(dev); dpt_free(dpt); return (0); } /* * This is the interrupt handler for the DPT driver. */ void dpt_intr(void *arg) { dpt_softc_t *dpt; dpt_ccb_t *dccb; union ccb *ccb; u_int status; u_int aux_status; u_int hba_stat; u_int scsi_stat; u_int32_t residue_len; /* Number of bytes not transferred */ dpt = (dpt_softc_t *)arg; /* First order of business is to check if this interrupt is for us */ while (((aux_status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ) != 0) { /* * What we want to do now, is to capture the status, all of it, * move it where it belongs, wake up whoever sleeps waiting to * process this result, and get out of here. */ if (dpt->sp->ccb_busaddr < dpt->dpt_ccb_busbase || dpt->sp->ccb_busaddr >= dpt->dpt_ccb_busend) { printf("Encountered bogus status packet\n"); status = dpt_inb(dpt, HA_RSTATUS); return; } dccb = dptccbptov(dpt, dpt->sp->ccb_busaddr); dpt->sp->ccb_busaddr = ~0; /* Ignore status packets with EOC not set */ if (dpt->sp->EOC == 0) { printf("dpt%d ERROR: Request %d received with " "clear EOC.\n Marking as LOST.\n", dpt->unit, dccb->transaction_id); #ifdef DPT_HANDLE_TIMEOUTS dccb->state |= DPT_CCB_STATE_MARKED_LOST; #endif /* This CLEARS the interrupt! */ status = dpt_inb(dpt, HA_RSTATUS); continue; } dpt->sp->EOC = 0; /* * Double buffer the status information so the hardware can * work on updating the status packet while we decifer the * one we were just interrupted for. * According to Mark Salyzyn, we only need few pieces of it. */ hba_stat = dpt->sp->hba_stat; scsi_stat = dpt->sp->scsi_stat; residue_len = dpt->sp->residue_len; /* Clear interrupts, check for error */ if ((status = dpt_inb(dpt, HA_RSTATUS)) & HA_SERROR) { /* * Error Condition. Check for magic cookie. Exit * this test on earliest sign of non-reset condition */ /* Check that this is not a board reset interrupt */ if (dpt_just_reset(dpt)) { printf("dpt%d: HBA rebooted.\n" " All transactions should be " "resubmitted\n", dpt->unit); printf("dpt%d: >>---->> This is incomplete, " "fix me.... <<----<<", dpt->unit); panic("DPT Rebooted"); } } /* Process CCB */ ccb = dccb->ccb; untimeout(dpttimeout, dccb, ccb->ccb_h.timeout_ch); if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { bus_dmasync_op_t op; if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) op = BUS_DMASYNC_POSTREAD; else op = BUS_DMASYNC_POSTWRITE; bus_dmamap_sync(dpt->buffer_dmat, dccb->dmamap, op); bus_dmamap_unload(dpt->buffer_dmat, dccb->dmamap); } /* Common Case inline... */ if (hba_stat == HA_NO_ERROR) { ccb->csio.scsi_status = scsi_stat; ccb->ccb_h.status = 0; switch (scsi_stat) { case SCSI_STATUS_OK: ccb->ccb_h.status |= CAM_REQ_CMP; break; case SCSI_STATUS_CHECK_COND: case SCSI_STATUS_CMD_TERMINATED: bcopy(&dccb->sense_data, &ccb->csio.sense_data, ccb->csio.sense_len); ccb->ccb_h.status |= CAM_AUTOSNS_VALID; /* FALLTHROUGH */ default: ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR; /* XXX Freeze DevQ */ break; } ccb->csio.resid = residue_len; dptfreeccb(dpt, dccb); xpt_done(ccb); } else { dptprocesserror(dpt, dccb, ccb, hba_stat, scsi_stat, residue_len); } } } static void dptprocesserror(dpt_softc_t *dpt, dpt_ccb_t *dccb, union ccb *ccb, u_int hba_stat, u_int scsi_stat, u_int32_t resid) { ccb->csio.resid = resid; switch (hba_stat) { case HA_ERR_SEL_TO: ccb->ccb_h.status = CAM_SEL_TIMEOUT; break; case HA_ERR_CMD_TO: ccb->ccb_h.status = CAM_CMD_TIMEOUT; break; case HA_SCSIBUS_RESET: case HA_HBA_POWER_UP: /* Similar effect to a bus reset??? */ ccb->ccb_h.status = CAM_SCSI_BUS_RESET; break; case HA_CP_ABORTED: case HA_CP_RESET: /* XXX ??? */ case HA_CP_ABORT_NA: /* XXX ??? */ case HA_CP_RESET_NA: /* XXX ??? */ if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INPROG) ccb->ccb_h.status = CAM_REQ_ABORTED; break; case HA_PCI_PARITY: case HA_PCI_MABORT: case HA_PCI_TABORT: case HA_PCI_STABORT: case HA_BUS_PARITY: case HA_PARITY_ERR: case HA_ECC_ERR: ccb->ccb_h.status = CAM_UNCOR_PARITY; break; case HA_UNX_MSGRJCT: ccb->ccb_h.status = CAM_MSG_REJECT_REC; break; case HA_UNX_BUSPHASE: ccb->ccb_h.status = CAM_SEQUENCE_FAIL; break; case HA_UNX_BUS_FREE: ccb->ccb_h.status = CAM_UNEXP_BUSFREE; break; case HA_SCSI_HUNG: case HA_RESET_STUCK: /* * Dead??? Can the controller get unstuck * from these conditions */ ccb->ccb_h.status = CAM_NO_HBA; break; case HA_RSENSE_FAIL: ccb->ccb_h.status = CAM_AUTOSENSE_FAIL; break; default: printf("dpt%d: Undocumented Error %x\n", dpt->unit, hba_stat); printf("Please mail this message to shimon@simon-shapiro.org\n"); ccb->ccb_h.status = CAM_REQ_CMP_ERR; break; } dptfreeccb(dpt, dccb); xpt_done(ccb); } static void dpttimeout(void *arg) { struct dpt_ccb *dccb; union ccb *ccb; struct dpt_softc *dpt; int s; dccb = (struct dpt_ccb *)arg; ccb = dccb->ccb; dpt = (struct dpt_softc *)ccb->ccb_h.ccb_dpt_ptr; xpt_print_path(ccb->ccb_h.path); printf("CCB %p - timed out\n", (void *)dccb); s = splcam(); /* * Try to clear any pending jobs. FreeBSD will lose interrupts, * leaving the controller suspended, and commands timed-out. * By calling the interrupt handler, any command thus stuck will be * completed. */ dpt_intr(dpt); if ((dccb->state & DCCB_ACTIVE) == 0) { xpt_print_path(ccb->ccb_h.path); printf("CCB %p - timed out CCB already completed\n", (void *)dccb); splx(s); return; } /* Abort this particular command. Leave all others running */ dpt_send_immediate(dpt, &dccb->eata_ccb, dccb->eata_ccb.cp_busaddr, /*retries*/20000, EATA_SPECIFIC_ABORT, 0, 0); ccb->ccb_h.status = CAM_CMD_TIMEOUT; splx(s); } /* * Shutdown the controller and ensure that the cache is completely flushed. * Called from the shutdown_final event after all disk access has completed. */ static void dptshutdown(void *arg, int howto) { dpt_softc_t *dpt; dpt = (dpt_softc_t *)arg; printf("dpt%d: Shutting down (mode %x) HBA. Please wait...\n", dpt->unit, howto); /* * What we do for a shutdown, is give the DPT early power loss warning */ dpt_send_immediate(dpt, NULL, 0, EATA_POWER_OFF_WARN, 0, 0, 0); DELAY(1000 * 1000 * 5); printf("dpt%d: Controller was warned of shutdown and is now " "disabled\n", dpt->unit); } /*============================================================================*/ #if 0 #ifdef DPT_RESET_HBA /* ** Function name : dpt_reset_hba ** ** Description : Reset the HBA and properly discard all pending work ** Input : Softc ** Output : Nothing */ static void dpt_reset_hba(dpt_softc_t *dpt) { eata_ccb_t *ccb; int ospl; dpt_ccb_t dccb, *dccbp; int result; struct scsi_xfer *xs; /* Prepare a control block. The SCSI command part is immaterial */ dccb.xs = NULL; dccb.flags = 0; dccb.state = DPT_CCB_STATE_NEW; dccb.std_callback = NULL; dccb.wrbuff_callback = NULL; ccb = &dccb.eata_ccb; ccb->CP_OpCode = EATA_CMD_RESET; ccb->SCSI_Reset = 0; ccb->HBA_Init = 1; ccb->Auto_Req_Sen = 1; ccb->cp_id = 0; /* Should be ignored */ ccb->DataIn = 1; ccb->DataOut = 0; ccb->Interpret = 1; ccb->reqlen = htonl(sizeof(struct scsi_sense_data)); ccb->cp_statDMA = htonl(vtophys(&ccb->cp_statDMA)); ccb->cp_reqDMA = htonl(vtophys(&ccb->cp_reqDMA)); ccb->cp_viraddr = (u_int32_t) & ccb; ccb->cp_msg[0] = HA_IDENTIFY_MSG | HA_DISCO_RECO; ccb->cp_scsi_cmd = 0; /* Should be ignored */ /* Lock up the submitted queue. We are very persistant here */ ospl = splcam(); while (dpt->queue_status & DPT_SUBMITTED_QUEUE_ACTIVE) { DELAY(100); } dpt->queue_status |= DPT_SUBMITTED_QUEUE_ACTIVE; splx(ospl); /* Send the RESET message */ if ((result = dpt_send_eata_command(dpt, &dccb.eata_ccb, EATA_CMD_RESET, 0, 0, 0, 0)) != 0) { printf("dpt%d: Failed to send the RESET message.\n" " Trying cold boot (ouch!)\n", dpt->unit); if ((result = dpt_send_eata_command(dpt, &dccb.eata_ccb, EATA_COLD_BOOT, 0, 0, 0, 0)) != 0) { panic("dpt%d: Faild to cold boot the HBA\n", dpt->unit); } #ifdef DPT_MEASURE_PERFORMANCE dpt->performance.cold_boots++; #endif /* DPT_MEASURE_PERFORMANCE */ } #ifdef DPT_MEASURE_PERFORMANCE dpt->performance.warm_starts++; #endif /* DPT_MEASURE_PERFORMANCE */ printf("dpt%d: Aborting pending requests. O/S should re-submit\n", dpt->unit); while ((dccbp = TAILQ_FIRST(&dpt->completed_ccbs)) != NULL) { struct scsi_xfer *xs = dccbp->xs; /* Not all transactions have xs structs */ if (xs != NULL) { /* Tell the kernel proper this did not complete well */ xs->error |= XS_SELTIMEOUT; xs->flags |= SCSI_ITSDONE; scsi_done(xs); } dpt_Qremove_submitted(dpt, dccbp); /* Remember, Callbacks are NOT in the standard queue */ if (dccbp->std_callback != NULL) { (dccbp->std_callback)(dpt, dccbp->eata_ccb.cp_channel, dccbp); } else { ospl = splcam(); dpt_Qpush_free(dpt, dccbp); splx(ospl); } } printf("dpt%d: reset done aborting all pending commands\n", dpt->unit); dpt->queue_status &= ~DPT_SUBMITTED_QUEUE_ACTIVE; } #endif /* DPT_RESET_HBA */ /* * Build a Command Block for target mode READ/WRITE BUFFER, * with the ``sync'' bit ON. * * Although the length and offset are 24 bit fields in the command, they cannot * exceed 8192 bytes, so we take them as short integers andcheck their range. * If they are sensless, we round them to zero offset, maximum length and * complain. */ static void dpt_target_ccb(dpt_softc_t * dpt, int bus, u_int8_t target, u_int8_t lun, dpt_ccb_t * ccb, int mode, u_int8_t command, u_int16_t length, u_int16_t offset) { eata_ccb_t *cp; int ospl; if ((length + offset) > DPT_MAX_TARGET_MODE_BUFFER_SIZE) { printf("dpt%d: Length of %d, and offset of %d are wrong\n", dpt->unit, length, offset); length = DPT_MAX_TARGET_MODE_BUFFER_SIZE; offset = 0; } ccb->xs = NULL; ccb->flags = 0; ccb->state = DPT_CCB_STATE_NEW; ccb->std_callback = (ccb_callback) dpt_target_done; ccb->wrbuff_callback = NULL; cp = &ccb->eata_ccb; cp->CP_OpCode = EATA_CMD_DMA_SEND_CP; cp->SCSI_Reset = 0; cp->HBA_Init = 0; cp->Auto_Req_Sen = 1; cp->cp_id = target; cp->DataIn = 1; cp->DataOut = 0; cp->Interpret = 0; cp->reqlen = htonl(sizeof(struct scsi_sense_data)); cp->cp_statDMA = htonl(vtophys(&cp->cp_statDMA)); cp->cp_reqDMA = htonl(vtophys(&cp->cp_reqDMA)); cp->cp_viraddr = (u_int32_t) & ccb; cp->cp_msg[0] = HA_IDENTIFY_MSG | HA_DISCO_RECO; cp->cp_scsi_cmd = command; cp->cp_cdb[1] = (u_int8_t) (mode & SCSI_TM_MODE_MASK); cp->cp_lun = lun; /* Order is important here! */ cp->cp_cdb[2] = 0x00; /* Buffer Id, only 1 :-( */ cp->cp_cdb[3] = (length >> 16) & 0xFF; /* Buffer offset MSB */ cp->cp_cdb[4] = (length >> 8) & 0xFF; cp->cp_cdb[5] = length & 0xFF; cp->cp_cdb[6] = (length >> 16) & 0xFF; /* Length MSB */ cp->cp_cdb[7] = (length >> 8) & 0xFF; cp->cp_cdb[8] = length & 0xFF; /* Length LSB */ cp->cp_cdb[9] = 0; /* No sync, no match bits */ /* * This could be optimized to live in dpt_register_buffer. * We keep it here, just in case the kernel decides to reallocate pages */ if (dpt_scatter_gather(dpt, ccb, DPT_RW_BUFFER_SIZE, dpt->rw_buffer[bus][target][lun])) { printf("dpt%d: Failed to setup Scatter/Gather for " "Target-Mode buffer\n", dpt->unit); } } /* Setup a target mode READ command */ static void dpt_set_target(int redo, dpt_softc_t * dpt, u_int8_t bus, u_int8_t target, u_int8_t lun, int mode, u_int16_t length, u_int16_t offset, dpt_ccb_t * ccb) { int ospl; if (dpt->target_mode_enabled) { ospl = splcam(); if (!redo) dpt_target_ccb(dpt, bus, target, lun, ccb, mode, SCSI_TM_READ_BUFFER, length, offset); ccb->transaction_id = ++dpt->commands_processed; #ifdef DPT_MEASURE_PERFORMANCE dpt->performance.command_count[ccb->eata_ccb.cp_scsi_cmd]++; ccb->command_started = microtime_now; #endif dpt_Qadd_waiting(dpt, ccb); dpt_sched_queue(dpt); splx(ospl); } else { printf("dpt%d: Target Mode Request, but Target Mode is OFF\n", dpt->unit); } } /* * Schedule a buffer to be sent to another target. * The work will be scheduled and the callback provided will be called when * the work is actually done. * * Please NOTE: ``Anyone'' can send a buffer, but only registered clients * get notified of receipt of buffers. */ int dpt_send_buffer(int unit, u_int8_t channel, u_int8_t target, u_int8_t lun, u_int8_t mode, u_int16_t length, u_int16_t offset, void *data, buff_wr_done callback) { dpt_softc_t *dpt; dpt_ccb_t *ccb = NULL; int ospl; /* This is an external call. Be a bit paranoid */ for (dpt = TAILQ_FIRST(&dpt_softc_list); dpt != NULL; dpt = TAILQ_NEXT(dpt, links)) { if (dpt->unit == unit) goto valid_unit; } return (INVALID_UNIT); valid_unit: if (dpt->target_mode_enabled) { if ((channel >= dpt->channels) || (target > dpt->max_id) || (lun > dpt->max_lun)) { return (INVALID_SENDER); } if ((dpt->rw_buffer[channel][target][lun] == NULL) || (dpt->buffer_receiver[channel][target][lun] == NULL)) return (NOT_REGISTERED); ospl = splsoftcam(); /* Process the free list */ if ((TAILQ_EMPTY(&dpt->free_ccbs)) && dpt_alloc_freelist(dpt)) { printf("dpt%d ERROR: Cannot allocate any more free CCB's.\n" " Please try later\n", dpt->unit); splx(ospl); return (NO_RESOURCES); } /* Now grab the newest CCB */ if ((ccb = dpt_Qpop_free(dpt)) == NULL) { splx(ospl); panic("dpt%d: Got a NULL CCB from pop_free()\n", dpt->unit); } splx(ospl); bcopy(dpt->rw_buffer[channel][target][lun] + offset, data, length); dpt_target_ccb(dpt, channel, target, lun, ccb, mode, SCSI_TM_WRITE_BUFFER, length, offset); ccb->std_callback = (ccb_callback) callback; /* Potential trouble */ ospl = splcam(); ccb->transaction_id = ++dpt->commands_processed; #ifdef DPT_MEASURE_PERFORMANCE dpt->performance.command_count[ccb->eata_ccb.cp_scsi_cmd]++; ccb->command_started = microtime_now; #endif dpt_Qadd_waiting(dpt, ccb); dpt_sched_queue(dpt); splx(ospl); return (0); } return (DRIVER_DOWN); } static void dpt_target_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb) { int ospl; eata_ccb_t *cp; cp = &ccb->eata_ccb; /* * Remove the CCB from the waiting queue. * We do NOT put it back on the free, etc., queues as it is a special * ccb, owned by the dpt_softc of this unit. */ ospl = splsoftcam(); dpt_Qremove_completed(dpt, ccb); splx(ospl); #define br_channel (ccb->eata_ccb.cp_channel) #define br_target (ccb->eata_ccb.cp_id) #define br_lun (ccb->eata_ccb.cp_LUN) #define br_index [br_channel][br_target][br_lun] #define read_buffer_callback (dpt->buffer_receiver br_index ) #define read_buffer (dpt->rw_buffer[br_channel][br_target][br_lun]) #define cb(offset) (ccb->eata_ccb.cp_cdb[offset]) #define br_offset ((cb(3) << 16) | (cb(4) << 8) | cb(5)) #define br_length ((cb(6) << 16) | (cb(7) << 8) | cb(8)) /* Different reasons for being here, you know... */ switch (ccb->eata_ccb.cp_scsi_cmd) { case SCSI_TM_READ_BUFFER: if (read_buffer_callback != NULL) { /* This is a buffer generated by a kernel process */ read_buffer_callback(dpt->unit, br_channel, br_target, br_lun, read_buffer, br_offset, br_length); } else { /* * This is a buffer waited for by a user (sleeping) * command */ wakeup(ccb); } /* We ALWAYS re-issue the same command; args are don't-care */ dpt_set_target(1, 0, 0, 0, 0, 0, 0, 0, 0); break; case SCSI_TM_WRITE_BUFFER: (ccb->wrbuff_callback) (dpt->unit, br_channel, br_target, br_offset, br_length, br_lun, ccb->status_packet.hba_stat); break; default: printf("dpt%d: %s is an unsupported command for target mode\n", dpt->unit, scsi_cmd_name(ccb->eata_ccb.cp_scsi_cmd)); } ospl = splsoftcam(); dpt->target_ccb[br_channel][br_target][br_lun] = NULL; dpt_Qpush_free(dpt, ccb); splx(ospl); } /* * Use this function to register a client for a buffer read target operation. * The function you register will be called every time a buffer is received * by the target mode code. */ dpt_rb_t dpt_register_buffer(int unit, u_int8_t channel, u_int8_t target, u_int8_t lun, u_int8_t mode, u_int16_t length, u_int16_t offset, dpt_rec_buff callback, dpt_rb_op_t op) { dpt_softc_t *dpt; dpt_ccb_t *ccb = NULL; int ospl; for (dpt = TAILQ_FIRST(&dpt_softc_list); dpt != NULL; dpt = TAILQ_NEXT(dpt, links)) { if (dpt->unit == unit) goto valid_unit; } return (INVALID_UNIT); valid_unit: if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) return (DRIVER_DOWN); if ((channel > (dpt->channels - 1)) || (target > (dpt->max_id - 1)) || (lun > (dpt->max_lun - 1))) return (INVALID_SENDER); if (dpt->buffer_receiver[channel][target][lun] == NULL) { if (op == REGISTER_BUFFER) { /* Assign the requested callback */ dpt->buffer_receiver[channel][target][lun] = callback; /* Get a CCB */ ospl = splsoftcam(); /* Process the free list */ if ((TAILQ_EMPTY(&dpt->free_ccbs)) && dpt_alloc_freelist(dpt)) { printf("dpt%d ERROR: Cannot allocate any more free CCB's.\n" " Please try later\n", dpt->unit); splx(ospl); return (NO_RESOURCES); } /* Now grab the newest CCB */ if ((ccb = dpt_Qpop_free(dpt)) == NULL) { splx(ospl); panic("dpt%d: Got a NULL CCB from pop_free()\n", dpt->unit); } splx(ospl); /* Clean up the leftover of the previous tenant */ ccb->status = DPT_CCB_STATE_NEW; dpt->target_ccb[channel][target][lun] = ccb; dpt->rw_buffer[channel][target][lun] = malloc(DPT_RW_BUFFER_SIZE, M_DEVBUF, M_NOWAIT); if (dpt->rw_buffer[channel][target][lun] == NULL) { printf("dpt%d: Failed to allocate " "Target-Mode buffer\n", dpt->unit); ospl = splsoftcam(); dpt_Qpush_free(dpt, ccb); splx(ospl); return (NO_RESOURCES); } dpt_set_target(0, dpt, channel, target, lun, mode, length, offset, ccb); return (SUCCESSFULLY_REGISTERED); } else return (NOT_REGISTERED); } else { if (op == REGISTER_BUFFER) { if (dpt->buffer_receiver[channel][target][lun] == callback) return (ALREADY_REGISTERED); else return (REGISTERED_TO_ANOTHER); } else { if (dpt->buffer_receiver[channel][target][lun] == callback) { dpt->buffer_receiver[channel][target][lun] = NULL; ospl = splsoftcam(); dpt_Qpush_free(dpt, ccb); splx(ospl); free(dpt->rw_buffer[channel][target][lun], M_DEVBUF); return (SUCCESSFULLY_REGISTERED); } else return (INVALID_CALLBACK); } } } /* Return the state of the blinking DPT LED's */ u_int8_t dpt_blinking_led(dpt_softc_t * dpt) { int ndx; int ospl; u_int32_t state; u_int32_t previous; u_int8_t result; ospl = splcam(); result = 0; for (ndx = 0, state = 0, previous = 0; (ndx < 10) && (state != previous); ndx++) { previous = state; state = dpt_inl(dpt, 1); } if ((state == previous) && (state == DPT_BLINK_INDICATOR)) result = dpt_inb(dpt, 5); splx(ospl); return (result); } /* * Execute a command which did not come from the kernel's SCSI layer. * The only way to map user commands to bus and target is to comply with the * standard DPT wire-down scheme: */ int dpt_user_cmd(dpt_softc_t * dpt, eata_pt_t * user_cmd, caddr_t cmdarg, int minor_no) { dpt_ccb_t *ccb; void *data; int channel, target, lun; int huh; int result; int ospl; int submitted; data = NULL; channel = minor2hba(minor_no); target = minor2target(minor_no); lun = minor2lun(minor_no); if ((channel > (dpt->channels - 1)) || (target > dpt->max_id) || (lun > dpt->max_lun)) return (ENXIO); if (target == dpt->sc_scsi_link[channel].adapter_targ) { /* This one is for the controller itself */ if ((user_cmd->eataID[0] != 'E') || (user_cmd->eataID[1] != 'A') || (user_cmd->eataID[2] != 'T') || (user_cmd->eataID[3] != 'A')) { return (ENXIO); } } /* Get a DPT CCB, so we can prepare a command */ ospl = splsoftcam(); /* Process the free list */ if ((TAILQ_EMPTY(&dpt->free_ccbs)) && dpt_alloc_freelist(dpt)) { printf("dpt%d ERROR: Cannot allocate any more free CCB's.\n" " Please try later\n", dpt->unit); splx(ospl); return (EFAULT); } /* Now grab the newest CCB */ if ((ccb = dpt_Qpop_free(dpt)) == NULL) { splx(ospl); panic("dpt%d: Got a NULL CCB from pop_free()\n", dpt->unit); } else { splx(ospl); /* Clean up the leftover of the previous tenant */ ccb->status = DPT_CCB_STATE_NEW; } bcopy((caddr_t) & user_cmd->command_packet, (caddr_t) & ccb->eata_ccb, sizeof(eata_ccb_t)); /* We do not want to do user specified scatter/gather. Why?? */ if (ccb->eata_ccb.scatter == 1) return (EINVAL); ccb->eata_ccb.Auto_Req_Sen = 1; ccb->eata_ccb.reqlen = htonl(sizeof(struct scsi_sense_data)); ccb->eata_ccb.cp_datalen = htonl(sizeof(ccb->eata_ccb.cp_datalen)); ccb->eata_ccb.cp_dataDMA = htonl(vtophys(ccb->eata_ccb.cp_dataDMA)); ccb->eata_ccb.cp_statDMA = htonl(vtophys(&ccb->eata_ccb.cp_statDMA)); ccb->eata_ccb.cp_reqDMA = htonl(vtophys(&ccb->eata_ccb.cp_reqDMA)); ccb->eata_ccb.cp_viraddr = (u_int32_t) & ccb; if (ccb->eata_ccb.DataIn || ccb->eata_ccb.DataOut) { /* Data I/O is involved in this command. Alocate buffer */ if (ccb->eata_ccb.cp_datalen > PAGE_SIZE) { data = contigmalloc(ccb->eata_ccb.cp_datalen, M_TEMP, M_WAITOK, 0, ~0, ccb->eata_ccb.cp_datalen, 0x10000); } else { data = malloc(ccb->eata_ccb.cp_datalen, M_TEMP, M_WAITOK); } if (data == NULL) { printf("dpt%d: Cannot allocate %d bytes " "for EATA command\n", dpt->unit, ccb->eata_ccb.cp_datalen); return (EFAULT); } #define usr_cmd_DMA (caddr_t)user_cmd->command_packet.cp_dataDMA if (ccb->eata_ccb.DataIn == 1) { if (copyin(usr_cmd_DMA, data, ccb->eata_ccb.cp_datalen) == -1) return (EFAULT); } } else { /* No data I/O involved here. Make sure the DPT knows that */ ccb->eata_ccb.cp_datalen = 0; data = NULL; } if (ccb->eata_ccb.FWNEST == 1) ccb->eata_ccb.FWNEST = 0; if (ccb->eata_ccb.cp_datalen != 0) { if (dpt_scatter_gather(dpt, ccb, ccb->eata_ccb.cp_datalen, data) != 0) { if (data != NULL) free(data, M_TEMP); return (EFAULT); } } /** * We are required to quiet a SCSI bus. * since we do not queue comands on a bus basis, * we wait for ALL commands on a controller to complete. * In the mean time, sched_queue() will not schedule new commands. */ if ((ccb->eata_ccb.cp_cdb[0] == MULTIFUNCTION_CMD) && (ccb->eata_ccb.cp_cdb[2] == BUS_QUIET)) { /* We wait for ALL traffic for this HBa to subside */ ospl = splsoftcam(); dpt->state |= DPT_HA_QUIET; splx(ospl); while ((submitted = dpt->submitted_ccbs_count) != 0) { huh = tsleep((void *) dpt, PCATCH | PRIBIO, "dptqt", 100 * hz); switch (huh) { case 0: /* Wakeup call received */ break; case EWOULDBLOCK: /* Timer Expired */ break; default: /* anything else */ break; } } } /* Resume normal operation */ if ((ccb->eata_ccb.cp_cdb[0] == MULTIFUNCTION_CMD) && (ccb->eata_ccb.cp_cdb[2] == BUS_UNQUIET)) { ospl = splsoftcam(); dpt->state &= ~DPT_HA_QUIET; splx(ospl); } /** * Schedule the command and submit it. * We bypass dpt_sched_queue, as it will block on DPT_HA_QUIET */ ccb->xs = NULL; ccb->flags = 0; ccb->eata_ccb.Auto_Req_Sen = 1; /* We always want this feature */ ccb->transaction_id = ++dpt->commands_processed; ccb->std_callback = (ccb_callback) dpt_user_cmd_done; ccb->result = (u_int32_t) & cmdarg; ccb->data = data; #ifdef DPT_MEASURE_PERFORMANCE ++dpt->performance.command_count[ccb->eata_ccb.cp_scsi_cmd]; ccb->command_started = microtime_now; #endif ospl = splcam(); dpt_Qadd_waiting(dpt, ccb); splx(ospl); dpt_sched_queue(dpt); /* Wait for the command to complete */ (void) tsleep((void *) ccb, PCATCH | PRIBIO, "dptucw", 100 * hz); /* Free allocated memory */ if (data != NULL) free(data, M_TEMP); return (0); } static void dpt_user_cmd_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb) { int ospl = splsoftcam(); u_int32_t result; caddr_t cmd_arg; /** * If Auto Request Sense is on, copyout the sense struct */ #define usr_pckt_DMA (caddr_t)(intptr_t)ntohl(ccb->eata_ccb.cp_reqDMA) #define usr_pckt_len ntohl(ccb->eata_ccb.cp_datalen) if (ccb->eata_ccb.Auto_Req_Sen == 1) { if (copyout((caddr_t) & ccb->sense_data, usr_pckt_DMA, sizeof(struct scsi_sense_data))) { ccb->result = EFAULT; dpt_Qpush_free(dpt, ccb); splx(ospl); wakeup(ccb); return; } } /* If DataIn is on, copyout the data */ if ((ccb->eata_ccb.DataIn == 1) && (ccb->status_packet.hba_stat == HA_NO_ERROR)) { if (copyout(ccb->data, usr_pckt_DMA, usr_pckt_len)) { dpt_Qpush_free(dpt, ccb); ccb->result = EFAULT; splx(ospl); wakeup(ccb); return; } } /* Copyout the status */ result = ccb->status_packet.hba_stat; cmd_arg = (caddr_t) ccb->result; if (copyout((caddr_t) & result, cmd_arg, sizeof(result))) { dpt_Qpush_free(dpt, ccb); ccb->result = EFAULT; splx(ospl); wakeup(ccb); return; } /* Put the CCB back in the freelist */ ccb->state |= DPT_CCB_STATE_COMPLETED; dpt_Qpush_free(dpt, ccb); /* Free allocated memory */ splx(ospl); return; } #ifdef DPT_HANDLE_TIMEOUTS /** * This function walks down the SUBMITTED queue. * Every request that is too old gets aborted and marked. * Since the DPT will complete (interrupt) immediately (what does that mean?), * We just walk the list, aborting old commands and marking them as such. * The dpt_complete function will get rid of the that were interrupted in the * normal manner. * * This function needs to run at splcam(), as it interacts with the submitted * queue, as well as the completed and free queues. Just like dpt_intr() does. * To run it at any ISPL other than that of dpt_intr(), will mean that dpt_intr * willbe able to pre-empt it, grab a transaction in progress (towards * destruction) and operate on it. The state of this transaction will be not * very clear. * The only other option, is to lock it only as long as necessary but have * dpt_intr() spin-wait on it. In a UP environment this makes no sense and in * a SMP environment, the advantage is dubvious for a function that runs once * every ten seconds for few microseconds and, on systems with healthy * hardware, does not do anything anyway. */ static void dpt_handle_timeouts(dpt_softc_t * dpt) { dpt_ccb_t *ccb; int ospl; ospl = splcam(); if (dpt->state & DPT_HA_TIMEOUTS_ACTIVE) { printf("dpt%d WARNING: Timeout Handling Collision\n", dpt->unit); splx(ospl); return; } dpt->state |= DPT_HA_TIMEOUTS_ACTIVE; /* Loop through the entire submitted queue, looking for lost souls */ for (ccb = TAILQ_FIRST(&dpt->submitted_ccbs); ccb != NULL; ccb = TAILQ_NEXT(ccb, links)) { struct scsi_xfer *xs; u_int32_t age, max_age; xs = ccb->xs; age = dpt_time_delta(ccb->command_started, microtime_now); #define TenSec 10000000 if (xs == NULL) { /* Local, non-kernel call */ max_age = TenSec; } else { max_age = (((xs->timeout * (dpt->submitted_ccbs_count + DPT_TIMEOUT_FACTOR)) > TenSec) ? (xs->timeout * (dpt->submitted_ccbs_count + DPT_TIMEOUT_FACTOR)) : TenSec); } /* * If a transaction is marked lost and is TWICE as old as we * care, then, and only then do we destroy it! */ if (ccb->state & DPT_CCB_STATE_MARKED_LOST) { /* Remember who is next */ if (age > (max_age * 2)) { dpt_Qremove_submitted(dpt, ccb); ccb->state &= ~DPT_CCB_STATE_MARKED_LOST; ccb->state |= DPT_CCB_STATE_ABORTED; #define cmd_name scsi_cmd_name(ccb->eata_ccb.cp_scsi_cmd) if (ccb->retries++ > DPT_RETRIES) { printf("dpt%d ERROR: Destroying stale " "%d (%s)\n" " on " "c%db%dt%du%d (%d/%d)\n", dpt->unit, ccb->transaction_id, cmd_name, dpt->unit, ccb->eata_ccb.cp_channel, ccb->eata_ccb.cp_id, ccb->eata_ccb.cp_LUN, age, ccb->retries); #define send_ccb &ccb->eata_ccb #define ESA EATA_SPECIFIC_ABORT (void) dpt_send_immediate(dpt, send_ccb, ESA, 0, 0); dpt_Qpush_free(dpt, ccb); /* The SCSI layer should re-try */ xs->error |= XS_TIMEOUT; xs->flags |= SCSI_ITSDONE; scsi_done(xs); } else { printf("dpt%d ERROR: Stale %d (%s) on " "c%db%dt%du%d (%d)\n" " gets another " "chance(%d/%d)\n", dpt->unit, ccb->transaction_id, cmd_name, dpt->unit, ccb->eata_ccb.cp_channel, ccb->eata_ccb.cp_id, ccb->eata_ccb.cp_LUN, age, ccb->retries, DPT_RETRIES); dpt_Qpush_waiting(dpt, ccb); dpt_sched_queue(dpt); } } } else { /* * This is a transaction that is not to be destroyed * (yet) But it is too old for our liking. We wait as * long as the upper layer thinks. Not really, we * multiply that by the number of commands in the * submitted queue + 1. */ if (!(ccb->state & DPT_CCB_STATE_MARKED_LOST) && (age != ~0) && (age > max_age)) { printf("dpt%d ERROR: Marking %d (%s) on " "c%db%dt%du%d \n" " as late after %dusec\n", dpt->unit, ccb->transaction_id, cmd_name, dpt->unit, ccb->eata_ccb.cp_channel, ccb->eata_ccb.cp_id, ccb->eata_ccb.cp_LUN, age); ccb->state |= DPT_CCB_STATE_MARKED_LOST; } } } dpt->state &= ~DPT_HA_TIMEOUTS_ACTIVE; splx(ospl); } static void dpt_timeout(void *arg) { dpt_softc_t *dpt = (dpt_softc_t *) arg; if (!(dpt->state & DPT_HA_TIMEOUTS_ACTIVE)) dpt_handle_timeouts(dpt); timeout(dpt_timeout, (caddr_t) dpt, hz * 10); } #endif /* DPT_HANDLE_TIMEOUTS */ #endif