/* $OpenBSD: ahci.c,v 1.26 2016/10/02 18:53:28 patrick Exp $ */ /* * Copyright (c) 2006 David Gwynne * Copyright (c) 2010 Conformal Systems LLC * Copyright (c) 2010 Jonathan Matthew * * 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. * * 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #ifdef AHCI_DEBUG #define DPRINTF(m, f...) do { if ((ahcidebug & (m)) == (m)) printf(f); } \ while (0) #define AHCI_D_TIMEOUT 0x00 #define AHCI_D_VERBOSE 0x01 #define AHCI_D_INTR 0x02 #define AHCI_D_XFER 0x08 int ahcidebug = AHCI_D_VERBOSE; #else #define DPRINTF(m, f...) #endif #ifdef HIBERNATE #include #include #include #include #include #include void ahci_hibernate_io_start(struct ahci_port *, struct ahci_ccb *); int ahci_hibernate_io_poll(struct ahci_port *, struct ahci_ccb *); void ahci_hibernate_load_prdt(struct ahci_ccb *); int ahci_hibernate_io(dev_t dev, daddr_t blkno, vaddr_t addr, size_t size, int wr, void *page); #endif struct cfdriver ahci_cd = { NULL, "ahci", DV_DULL }; void ahci_enable_interrupts(struct ahci_port *); int ahci_init(struct ahci_softc *); int ahci_port_alloc(struct ahci_softc *, u_int); void ahci_port_free(struct ahci_softc *, u_int); int ahci_port_init(struct ahci_softc *, u_int); int ahci_default_port_start(struct ahci_port *, int); int ahci_port_stop(struct ahci_port *, int); int ahci_port_clo(struct ahci_port *); int ahci_port_softreset(struct ahci_port *); int ahci_port_portreset(struct ahci_port *, int); int ahci_port_signature(struct ahci_port *); int ahci_pmp_port_softreset(struct ahci_port *, int); int ahci_pmp_port_portreset(struct ahci_port *, int); int ahci_pmp_port_probe(struct ahci_port *ap, int pmp_port); int ahci_load_prdt(struct ahci_ccb *); void ahci_load_prdt_seg(struct ahci_prdt *, u_int64_t, u_int32_t, u_int32_t); void ahci_unload_prdt(struct ahci_ccb *); int ahci_poll(struct ahci_ccb *, int, void (*)(void *)); void ahci_start(struct ahci_ccb *); void ahci_issue_pending_ncq_commands(struct ahci_port *); void ahci_issue_pending_commands(struct ahci_port *, int); int ahci_intr(void *); u_int32_t ahci_port_intr(struct ahci_port *, u_int32_t); struct ahci_ccb *ahci_get_ccb(struct ahci_port *); void ahci_put_ccb(struct ahci_ccb *); struct ahci_ccb *ahci_get_err_ccb(struct ahci_port *); void ahci_put_err_ccb(struct ahci_ccb *); struct ahci_ccb *ahci_get_pmp_ccb(struct ahci_port *); void ahci_put_pmp_ccb(struct ahci_ccb *); int ahci_port_read_ncq_error(struct ahci_port *, int *, int); struct ahci_dmamem *ahci_dmamem_alloc(struct ahci_softc *, size_t); void ahci_dmamem_free(struct ahci_softc *, struct ahci_dmamem *); u_int32_t ahci_read(struct ahci_softc *, bus_size_t); void ahci_write(struct ahci_softc *, bus_size_t, u_int32_t); int ahci_wait_ne(struct ahci_softc *, bus_size_t, u_int32_t, u_int32_t); u_int32_t ahci_pread(struct ahci_port *, bus_size_t); void ahci_pwrite(struct ahci_port *, bus_size_t, u_int32_t); int ahci_pwait_eq(struct ahci_port *, bus_size_t, u_int32_t, u_int32_t, int); void ahci_flush_tfd(struct ahci_port *ap); u_int32_t ahci_active_mask(struct ahci_port *); int ahci_port_detect_pmp(struct ahci_port *); void ahci_pmp_probe_timeout(void *); /* pmp operations */ int ahci_pmp_read(struct ahci_port *, int, int, u_int32_t *); int ahci_pmp_write(struct ahci_port *, int, int, u_int32_t); int ahci_pmp_phy_status(struct ahci_port *, int, u_int32_t *); int ahci_pmp_identify(struct ahci_port *, int *); /* Wait for all bits in _b to be cleared */ #define ahci_pwait_clr(_ap, _r, _b, _n) \ ahci_pwait_eq((_ap), (_r), (_b), 0, (_n)) /* Wait for all bits in _b to be set */ #define ahci_pwait_set(_ap, _r, _b, _n) \ ahci_pwait_eq((_ap), (_r), (_b), (_b), (_n)) /* provide methods for atascsi to call */ int ahci_ata_probe(void *, int, int); void ahci_ata_free(void *, int, int); struct ata_xfer * ahci_ata_get_xfer(void *, int); void ahci_ata_put_xfer(struct ata_xfer *); void ahci_ata_cmd(struct ata_xfer *); struct atascsi_methods ahci_atascsi_methods = { ahci_ata_probe, ahci_ata_free, ahci_ata_get_xfer, ahci_ata_put_xfer, ahci_ata_cmd }; /* ccb completions */ void ahci_ata_cmd_done(struct ahci_ccb *); void ahci_pmp_cmd_done(struct ahci_ccb *); void ahci_ata_cmd_timeout(void *); void ahci_empty_done(struct ahci_ccb *); int ahci_attach(struct ahci_softc *sc) { struct atascsi_attach_args aaa; u_int32_t pi; int i; if (sc->sc_port_start == NULL) sc->sc_port_start = ahci_default_port_start; if (ahci_init(sc) != 0) { /* error already printed by ahci_init */ goto unmap; } printf("\n"); sc->sc_cap = ahci_read(sc, AHCI_REG_CAP); sc->sc_ncmds = AHCI_REG_CAP_NCS(sc->sc_cap); #ifdef AHCI_DEBUG if (ahcidebug & AHCI_D_VERBOSE) { const char *gen; switch (sc->sc_cap & AHCI_REG_CAP_ISS) { case AHCI_REG_CAP_ISS_G1: gen = "1 (1.5Gbps)"; break; case AHCI_REG_CAP_ISS_G2: gen = "2 (3.0Gb/s)"; break; case AHCI_REG_CAP_ISS_G3: gen = "3 (6.0Gb/s)"; break; default: gen = "unknown"; break; } printf("%s: capabilities 0x%b, %d ports, %d cmds, gen %s\n", DEVNAME(sc), sc->sc_cap, AHCI_FMT_CAP, AHCI_REG_CAP_NP(sc->sc_cap), sc->sc_ncmds, gen); printf("%s: extended capabilities 0x%b\n", DEVNAME(sc), ahci_read(sc, AHCI_REG_CAP2), AHCI_FMT_CAP2); } #endif pi = ahci_read(sc, AHCI_REG_PI); DPRINTF(AHCI_D_VERBOSE, "%s: ports implemented: 0x%08x\n", DEVNAME(sc), pi); #ifdef AHCI_COALESCE /* Naive coalescing support - enable for all ports. */ if (sc->sc_cap & AHCI_REG_CAP_CCCS) { u_int16_t ccc_timeout = 20; u_int8_t ccc_numcomplete = 12; u_int32_t ccc_ctl; /* disable coalescing during reconfiguration. */ ccc_ctl = ahci_read(sc, AHCI_REG_CCC_CTL); ccc_ctl &= ~0x00000001; ahci_write(sc, AHCI_REG_CCC_CTL, ccc_ctl); sc->sc_ccc_mask = 1 << AHCI_REG_CCC_CTL_INT(ccc_ctl); if (pi & sc->sc_ccc_mask) { /* A conflict with the implemented port list? */ printf("%s: coalescing interrupt/implemented port list " "conflict, PI: %08x, ccc_mask: %08x\n", DEVNAME(sc), pi, sc->sc_ccc_mask); sc->sc_ccc_mask = 0; goto noccc; } /* ahci_port_start will enable each port when it starts. */ sc->sc_ccc_ports = pi; sc->sc_ccc_ports_cur = 0; /* program thresholds and enable overall coalescing. */ ccc_ctl &= ~0xffffff00; ccc_ctl |= (ccc_timeout << 16) | (ccc_numcomplete << 8); ahci_write(sc, AHCI_REG_CCC_CTL, ccc_ctl); ahci_write(sc, AHCI_REG_CCC_PORTS, 0); ahci_write(sc, AHCI_REG_CCC_CTL, ccc_ctl | 1); } noccc: #endif /* * Given that ahci_port_alloc() will grab one CCB for error recovery * in the NCQ case from the pool of CCBs sized based on sc->sc_ncmds * pretend at least 2 command slots for devices without NCQ support. * That way, also at least 1 slot is made available for atascsi(4). */ sc->sc_ncmds = max(2, sc->sc_ncmds); for (i = 0; i < AHCI_MAX_PORTS; i++) { if (!ISSET(pi, 1 << i)) { /* dont allocate stuff if the port isnt implemented */ continue; } if (ahci_port_alloc(sc, i) == ENOMEM) goto freeports; } memset(&aaa, 0, sizeof(aaa)); aaa.aaa_cookie = sc; aaa.aaa_methods = &ahci_atascsi_methods; aaa.aaa_minphys = NULL; aaa.aaa_nports = AHCI_MAX_PORTS; aaa.aaa_ncmds = sc->sc_ncmds - 1; if (!(sc->sc_flags & AHCI_F_NO_NCQ) && (sc->sc_cap & AHCI_REG_CAP_SNCQ)) { aaa.aaa_capability |= ASAA_CAP_NCQ | ASAA_CAP_PMP_NCQ; /* XXX enabling ASAA_CAP_PMP_NCQ with FBS: * - some error recovery work required (single device vs port * errors) * - probably need to look at storing our active ccb queue * differently so we can group ncq and non-ncq commands * for different ports. as long as we preserve the order for * each port, we can reorder commands to get more ncq * commands to run in parallel. */ } sc->sc_atascsi = atascsi_attach(&sc->sc_dev, &aaa); /* Enable interrupts */ ahci_write(sc, AHCI_REG_GHC, AHCI_REG_GHC_AE | AHCI_REG_GHC_IE); return 0; freeports: for (i = 0; i < AHCI_MAX_PORTS; i++) { if (sc->sc_ports[i] != NULL) ahci_port_free(sc, i); } unmap: /* Disable controller */ ahci_write(sc, AHCI_REG_GHC, 0); return 1; } int ahci_detach(struct ahci_softc *sc, int flags) { int rv, i; if (sc->sc_atascsi != NULL) { rv = atascsi_detach(sc->sc_atascsi, flags); if (rv != 0) return (rv); } for (i = 0; i < AHCI_MAX_PORTS; i++) { if (sc->sc_ports[i] != NULL) ahci_port_free(sc, i); } return (0); } int ahci_activate(struct device *self, int act) { struct ahci_softc *sc = (struct ahci_softc *)self; int i, rv = 0; switch (act) { case DVACT_RESUME: /* enable ahci (global interrupts disabled) */ ahci_write(sc, AHCI_REG_GHC, AHCI_REG_GHC_AE); /* restore BIOS initialised parameters */ ahci_write(sc, AHCI_REG_CAP, sc->sc_cap); for (i = 0; i < AHCI_MAX_PORTS; i++) { if (sc->sc_ports[i] != NULL) ahci_port_init(sc, i); } /* Enable interrupts */ ahci_write(sc, AHCI_REG_GHC, AHCI_REG_GHC_AE | AHCI_REG_GHC_IE); rv = config_activate_children(self, act); break; case DVACT_POWERDOWN: rv = config_activate_children(self, act); for (i = 0; i < AHCI_MAX_PORTS; i++) { if (sc->sc_ports[i] != NULL) ahci_port_stop(sc->sc_ports[i], 1); } break; default: rv = config_activate_children(self, act); break; } return (rv); } int ahci_init(struct ahci_softc *sc) { u_int32_t reg, cap, pi; const char *revision; DPRINTF(AHCI_D_VERBOSE, " GHC 0x%b", ahci_read(sc, AHCI_REG_GHC), AHCI_FMT_GHC); /* save BIOS initialised parameters, enable staggered spin up */ cap = ahci_read(sc, AHCI_REG_CAP); cap &= AHCI_REG_CAP_SMPS; cap |= AHCI_REG_CAP_SSS; pi = ahci_read(sc, AHCI_REG_PI); if (ISSET(AHCI_REG_GHC_AE, ahci_read(sc, AHCI_REG_GHC))) { /* reset the controller */ ahci_write(sc, AHCI_REG_GHC, AHCI_REG_GHC_HR); if (ahci_wait_ne(sc, AHCI_REG_GHC, AHCI_REG_GHC_HR, AHCI_REG_GHC_HR) != 0) { printf(" unable to reset controller\n"); return (1); } } /* enable ahci (global interrupts disabled) */ ahci_write(sc, AHCI_REG_GHC, AHCI_REG_GHC_AE); /* restore parameters */ ahci_write(sc, AHCI_REG_CAP, cap); ahci_write(sc, AHCI_REG_PI, pi); /* check the revision */ reg = ahci_read(sc, AHCI_REG_VS); switch (reg) { case AHCI_REG_VS_0_95: revision = "0.95"; break; case AHCI_REG_VS_1_0: revision = "1.0"; break; case AHCI_REG_VS_1_1: revision = "1.1"; break; case AHCI_REG_VS_1_2: revision = "1.2"; break; case AHCI_REG_VS_1_3: revision = "1.3"; break; case AHCI_REG_VS_1_3_1: revision = "1.3.1"; break; default: printf(" unsupported AHCI revision 0x%08x\n", reg); return (1); } printf(" AHCI %s", revision); return (0); } void ahci_enable_interrupts(struct ahci_port *ap) { ahci_pwrite(ap, AHCI_PREG_IE, AHCI_PREG_IE_TFEE | AHCI_PREG_IE_HBFE | AHCI_PREG_IE_IFE | AHCI_PREG_IE_OFE | AHCI_PREG_IE_DPE | AHCI_PREG_IE_UFE | ((ap->ap_sc->sc_cap & AHCI_REG_CAP_SSNTF) ? AHCI_PREG_IE_IPME : 0) | #ifdef AHCI_COALESCE ((ap->ap_sc->sc_ccc_ports & (1 << ap->ap_port)) ? 0 : (AHCI_PREG_IE_SDBE | AHCI_PREG_IE_DHRE)) #else AHCI_PREG_IE_SDBE | AHCI_PREG_IE_DHRE #endif ); } int ahci_port_alloc(struct ahci_softc *sc, u_int port) { struct ahci_port *ap; struct ahci_ccb *ccb; u_int64_t dva; u_int32_t cmd; struct ahci_cmd_hdr *hdr; struct ahci_cmd_table *table; const char *speed; int i, rc = ENOMEM; ap = malloc(sizeof(*ap), M_DEVBUF, M_NOWAIT | M_ZERO); if (ap == NULL) { printf("%s: unable to allocate memory for port %d\n", DEVNAME(sc), port); goto reterr; } ap->ap_err_scratch = dma_alloc(DEV_BSIZE, PR_NOWAIT | PR_ZERO); if (ap->ap_err_scratch == NULL) { printf("%s: unable to allocate DMA scratch buf for port %d\n", DEVNAME(sc), port); free(ap, M_DEVBUF, sizeof(*ap)); goto reterr; } #ifdef AHCI_DEBUG snprintf(ap->ap_name, sizeof(ap->ap_name), "%s.%d", DEVNAME(sc), port); #endif ap->ap_port = port; sc->sc_ports[port] = ap; if (bus_space_subregion(sc->sc_iot, sc->sc_ioh, AHCI_PORT_REGION(port), AHCI_PORT_SIZE, &ap->ap_ioh) != 0) { printf("%s: unable to create register window for port %d\n", DEVNAME(sc), port); goto freeport; } ap->ap_sc = sc; #ifdef AHCI_COALESCE ap->ap_num = port; #endif TAILQ_INIT(&ap->ap_ccb_free); TAILQ_INIT(&ap->ap_ccb_pending); mtx_init(&ap->ap_ccb_mtx, IPL_BIO); /* Disable port interrupts */ ahci_pwrite(ap, AHCI_PREG_IE, 0); /* Sec 10.1.2 - deinitialise port if it is already running */ cmd = ahci_pread(ap, AHCI_PREG_CMD); if (ISSET(cmd, (AHCI_PREG_CMD_ST | AHCI_PREG_CMD_CR | AHCI_PREG_CMD_FRE | AHCI_PREG_CMD_FR)) || ISSET(ahci_pread(ap, AHCI_PREG_SCTL), AHCI_PREG_SCTL_DET)) { int r; r = ahci_port_stop(ap, 1); if (r) { printf("%s: unable to disable %s, ignoring port %d\n", DEVNAME(sc), r == 2 ? "CR" : "FR", port); rc = ENXIO; goto freeport; } /* Write DET to zero */ ahci_pwrite(ap, AHCI_PREG_SCTL, 0); } /* XXX FBS - need to allocate 16x ahci_rfis struct? - but we don't * know if there's a PMP attached or if the HBA supports FBS yet.. * reallocate when we enable FBS? */ /* Allocate RFIS */ ap->ap_dmamem_rfis = ahci_dmamem_alloc(sc, sizeof(struct ahci_rfis)); if (ap->ap_dmamem_rfis == NULL) goto nomem; /* Setup RFIS base address */ ap->ap_rfis = (struct ahci_rfis *) AHCI_DMA_KVA(ap->ap_dmamem_rfis); dva = AHCI_DMA_DVA(ap->ap_dmamem_rfis); ahci_pwrite(ap, AHCI_PREG_FBU, (u_int32_t)(dva >> 32)); ahci_pwrite(ap, AHCI_PREG_FB, (u_int32_t)dva); /* Enable FIS reception and activate port. */ cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; cmd |= AHCI_PREG_CMD_FRE | AHCI_PREG_CMD_POD | AHCI_PREG_CMD_SUD; ahci_pwrite(ap, AHCI_PREG_CMD, cmd | AHCI_PREG_CMD_ICC_ACTIVE); /* Check whether port activated. Skip it if not. */ cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; if (!ISSET(cmd, AHCI_PREG_CMD_FRE)) { rc = ENXIO; goto freeport; } /* Allocate a CCB for each command slot */ ap->ap_ccbs = mallocarray(sc->sc_ncmds, sizeof(struct ahci_ccb), M_DEVBUF, M_NOWAIT | M_ZERO); if (ap->ap_ccbs == NULL) { printf("%s: unable to allocate command list for port %d\n", DEVNAME(sc), port); goto freeport; } /* Command List Structures and Command Tables */ ap->ap_dmamem_cmd_list = ahci_dmamem_alloc(sc, sc->sc_ncmds * sizeof(struct ahci_cmd_hdr)); ap->ap_dmamem_cmd_table = ahci_dmamem_alloc(sc, sc->sc_ncmds * sizeof(struct ahci_cmd_table)); if (ap->ap_dmamem_cmd_table == NULL || ap->ap_dmamem_cmd_list == NULL) { nomem: printf("%s: unable to allocate DMA memory for port %d\n", DEVNAME(sc), port); goto freeport; } /* Setup command list base address */ dva = AHCI_DMA_DVA(ap->ap_dmamem_cmd_list); ahci_pwrite(ap, AHCI_PREG_CLBU, (u_int32_t)(dva >> 32)); ahci_pwrite(ap, AHCI_PREG_CLB, (u_int32_t)dva); /* Split CCB allocation into CCBs and assign to command header/table */ hdr = AHCI_DMA_KVA(ap->ap_dmamem_cmd_list); table = AHCI_DMA_KVA(ap->ap_dmamem_cmd_table); for (i = 0; i < sc->sc_ncmds; i++) { ccb = &ap->ap_ccbs[i]; if (bus_dmamap_create(sc->sc_dmat, MAXPHYS, AHCI_MAX_PRDT, (4 * 1024 * 1024), 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->ccb_dmamap) != 0) { printf("%s: unable to create dmamap for port %d " "ccb %d\n", DEVNAME(sc), port, i); goto freeport; } ccb->ccb_slot = i; ccb->ccb_port = ap; ccb->ccb_cmd_hdr = &hdr[i]; ccb->ccb_cmd_table = &table[i]; htolem64(&ccb->ccb_cmd_hdr->ctba, AHCI_DMA_DVA(ap->ap_dmamem_cmd_table) + ccb->ccb_slot * sizeof(struct ahci_cmd_table)); ccb->ccb_xa.fis = (struct ata_fis_h2d *)ccb->ccb_cmd_table->cfis; ccb->ccb_xa.packetcmd = ccb->ccb_cmd_table->acmd; ccb->ccb_xa.tag = i; ccb->ccb_xa.state = ATA_S_COMPLETE; ahci_put_ccb(ccb); } /* grab a ccb for use during error recovery */ ap->ap_ccb_err = &ap->ap_ccbs[sc->sc_ncmds - 1]; TAILQ_REMOVE(&ap->ap_ccb_free, ap->ap_ccb_err, ccb_entry); ap->ap_ccb_err->ccb_xa.state = ATA_S_COMPLETE; /* Wait for ICC change to complete */ ahci_pwait_clr(ap, AHCI_PREG_CMD, AHCI_PREG_CMD_ICC, 1); /* Reset port */ rc = ahci_port_portreset(ap, 1); switch (rc) { case ENODEV: switch (ahci_pread(ap, AHCI_PREG_SSTS) & AHCI_PREG_SSTS_DET) { case AHCI_PREG_SSTS_DET_DEV_NE: printf("%s: device not communicating on port %d\n", DEVNAME(sc), port); break; case AHCI_PREG_SSTS_DET_PHYOFFLINE: printf("%s: PHY offline on port %d\n", DEVNAME(sc), port); break; default: DPRINTF(AHCI_D_VERBOSE, "%s: no device detected " "on port %d\n", DEVNAME(sc), port); break; } goto freeport; case EBUSY: printf("%s: device on port %d didn't come ready, " "TFD: 0x%b\n", DEVNAME(sc), port, ahci_pread(ap, AHCI_PREG_TFD), AHCI_PFMT_TFD_STS); /* Try a soft reset to clear busy */ rc = ahci_port_softreset(ap); if (rc) { printf("%s: unable to communicate " "with device on port %d\n", DEVNAME(sc), port); goto freeport; } break; default: break; } DPRINTF(AHCI_D_VERBOSE, "%s: detected device on port %d; %d\n", DEVNAME(sc), port, rc); /* Read current link speed */ switch(ahci_pread(ap, AHCI_PREG_SSTS) & AHCI_PREG_SSTS_SPD) { case AHCI_PREG_SSTS_SPD_GEN1: speed = "1.5Gb/s"; break; case AHCI_PREG_SSTS_SPD_GEN2: speed = "3.0Gb/s"; break; case AHCI_PREG_SSTS_SPD_GEN3: speed = "6.0Gb/s"; break; default: speed = NULL; break; } if (speed != NULL) printf("%s: port %d: %s\n", PORTNAME(ap), port, speed); /* Enable command transfers on port */ if (ahci_port_start(ap, 0)) { printf("%s: failed to start command DMA on port %d, " "disabling\n", DEVNAME(sc), port); rc = ENXIO; /* couldn't start port */ } /* Flush interrupts for port */ ahci_pwrite(ap, AHCI_PREG_IS, ahci_pread(ap, AHCI_PREG_IS)); ahci_write(sc, AHCI_REG_IS, 1 << port); ahci_enable_interrupts(ap); freeport: if (rc != 0) ahci_port_free(sc, port); reterr: return (rc); } void ahci_port_free(struct ahci_softc *sc, u_int port) { struct ahci_port *ap = sc->sc_ports[port]; struct ahci_ccb *ccb; /* Ensure port is disabled and its interrupts are flushed */ if (ap->ap_sc) { ahci_pwrite(ap, AHCI_PREG_CMD, 0); ahci_pwrite(ap, AHCI_PREG_IE, 0); ahci_pwrite(ap, AHCI_PREG_IS, ahci_pread(ap, AHCI_PREG_IS)); ahci_write(sc, AHCI_REG_IS, 1 << port); } if (ap->ap_ccb_err) ahci_put_ccb(ap->ap_ccb_err); if (ap->ap_ccbs) { while ((ccb = ahci_get_ccb(ap)) != NULL) bus_dmamap_destroy(sc->sc_dmat, ccb->ccb_dmamap); free(ap->ap_ccbs, M_DEVBUF, sc->sc_ncmds * sizeof(*ccb)); } if (ap->ap_dmamem_cmd_list) ahci_dmamem_free(sc, ap->ap_dmamem_cmd_list); if (ap->ap_dmamem_rfis) ahci_dmamem_free(sc, ap->ap_dmamem_rfis); if (ap->ap_dmamem_cmd_table) ahci_dmamem_free(sc, ap->ap_dmamem_cmd_table); if (ap->ap_err_scratch) dma_free(ap->ap_err_scratch, DEV_BSIZE); /* bus_space(9) says we dont free the subregions handle */ free(ap, M_DEVBUF, sizeof(*ap)); sc->sc_ports[port] = NULL; } int ahci_port_init(struct ahci_softc *sc, u_int port) { struct ahci_port *ap; u_int64_t dva; u_int32_t cmd; int rc = ENOMEM; ap = sc->sc_ports[port]; #ifdef AHCI_DEBUG snprintf(ap->ap_name, sizeof(ap->ap_name), "%s.%d", DEVNAME(sc), port); #endif /* Disable port interrupts */ ahci_pwrite(ap, AHCI_PREG_IE, 0); /* Sec 10.1.2 - deinitialise port if it is already running */ cmd = ahci_pread(ap, AHCI_PREG_CMD); if (ISSET(cmd, (AHCI_PREG_CMD_ST | AHCI_PREG_CMD_CR | AHCI_PREG_CMD_FRE | AHCI_PREG_CMD_FR)) || ISSET(ahci_pread(ap, AHCI_PREG_SCTL), AHCI_PREG_SCTL_DET)) { int r; r = ahci_port_stop(ap, 1); if (r) { printf("%s: unable to disable %s, ignoring port %d\n", DEVNAME(sc), r == 2 ? "CR" : "FR", port); rc = ENXIO; goto reterr; } /* Write DET to zero */ ahci_pwrite(ap, AHCI_PREG_SCTL, 0); } /* Setup RFIS base address */ ap->ap_rfis = (struct ahci_rfis *) AHCI_DMA_KVA(ap->ap_dmamem_rfis); dva = AHCI_DMA_DVA(ap->ap_dmamem_rfis); ahci_pwrite(ap, AHCI_PREG_FBU, (u_int32_t)(dva >> 32)); ahci_pwrite(ap, AHCI_PREG_FB, (u_int32_t)dva); /* Enable FIS reception and activate port. */ cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; cmd |= AHCI_PREG_CMD_FRE | AHCI_PREG_CMD_POD | AHCI_PREG_CMD_SUD; ahci_pwrite(ap, AHCI_PREG_CMD, cmd | AHCI_PREG_CMD_ICC_ACTIVE); /* Check whether port activated. Skip it if not. */ cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; if (!ISSET(cmd, AHCI_PREG_CMD_FRE)) { rc = ENXIO; goto reterr; } /* Setup command list base address */ dva = AHCI_DMA_DVA(ap->ap_dmamem_cmd_list); ahci_pwrite(ap, AHCI_PREG_CLBU, (u_int32_t)(dva >> 32)); ahci_pwrite(ap, AHCI_PREG_CLB, (u_int32_t)dva); /* Wait for ICC change to complete */ ahci_pwait_clr(ap, AHCI_PREG_CMD, AHCI_PREG_CMD_ICC, 1); /* Reset port */ rc = ahci_port_portreset(ap, 1); switch (rc) { case ENODEV: switch (ahci_pread(ap, AHCI_PREG_SSTS) & AHCI_PREG_SSTS_DET) { case AHCI_PREG_SSTS_DET_DEV_NE: printf("%s: device not communicating on port %d\n", DEVNAME(sc), port); break; case AHCI_PREG_SSTS_DET_PHYOFFLINE: printf("%s: PHY offline on port %d\n", DEVNAME(sc), port); break; default: DPRINTF(AHCI_D_VERBOSE, "%s: no device detected " "on port %d\n", DEVNAME(sc), port); break; } goto reterr; case EBUSY: printf("%s: device on port %d didn't come ready, " "TFD: 0x%b\n", DEVNAME(sc), port, ahci_pread(ap, AHCI_PREG_TFD), AHCI_PFMT_TFD_STS); /* Try a soft reset to clear busy */ rc = ahci_port_softreset(ap); if (rc) { printf("%s: unable to communicate " "with device on port %d\n", DEVNAME(sc), port); goto reterr; } break; default: break; } DPRINTF(AHCI_D_VERBOSE, "%s: detected device on port %d\n", DEVNAME(sc), port); if (ap->ap_pmp_ports > 0) { int p; for (p = 0; p < ap->ap_pmp_ports; p++) { int sig; /* might need to do a portreset first here? */ /* softreset the port */ if (ahci_pmp_port_softreset(ap, p)) { printf("%s.%d: unable to probe PMP port due to" " softreset failure\n", PORTNAME(ap), p); continue; } sig = ahci_port_signature(ap); printf("%s.%d: port signature returned %d\n", PORTNAME(ap), p, sig); } } /* Enable command transfers on port */ if (ahci_port_start(ap, 0)) { printf("%s: failed to start command DMA on port %d, " "disabling\n", DEVNAME(sc), port); rc = ENXIO; /* couldn't start port */ } /* Flush interrupts for port */ ahci_pwrite(ap, AHCI_PREG_IS, ahci_pread(ap, AHCI_PREG_IS)); ahci_write(sc, AHCI_REG_IS, 1 << port); ahci_enable_interrupts(ap); reterr: return (rc); } int ahci_default_port_start(struct ahci_port *ap, int fre_only) { u_int32_t r; /* XXX FBS: possibly turn FBS on here */ /* Turn on FRE (and ST) */ r = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; r |= AHCI_PREG_CMD_FRE; if (!fre_only) r |= AHCI_PREG_CMD_ST; ahci_pwrite(ap, AHCI_PREG_CMD, r); #ifdef AHCI_COALESCE /* (Re-)enable coalescing on the port. */ if (ap->ap_sc->sc_ccc_ports & (1 << ap->ap_num)) { ap->ap_sc->sc_ccc_ports_cur |= (1 << ap->ap_num); ahci_write(ap->ap_sc, AHCI_REG_CCC_PORTS, ap->ap_sc->sc_ccc_ports_cur); } #endif /* Wait for CR to come on */ if (!fre_only && ahci_pwait_set(ap, AHCI_PREG_CMD, AHCI_PREG_CMD_CR, 1)) return (1); return (0); } int ahci_port_stop(struct ahci_port *ap, int stop_fis_rx) { u_int32_t r; #ifdef AHCI_COALESCE /* Disable coalescing on the port while it is stopped. */ if (ap->ap_sc->sc_ccc_ports & (1 << ap->ap_num)) { ap->ap_sc->sc_ccc_ports_cur &= ~(1 << ap->ap_num); ahci_write(ap->ap_sc, AHCI_REG_CCC_PORTS, ap->ap_sc->sc_ccc_ports_cur); } #endif /* Turn off ST (and FRE) */ r = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; r &= ~AHCI_PREG_CMD_ST; if (stop_fis_rx) r &= ~AHCI_PREG_CMD_FRE; ahci_pwrite(ap, AHCI_PREG_CMD, r); /* Wait for CR to go off */ if (ahci_pwait_clr(ap, AHCI_PREG_CMD, AHCI_PREG_CMD_CR, 1)) return (1); /* Wait for FR to go off */ if (stop_fis_rx && ahci_pwait_clr(ap, AHCI_PREG_CMD, AHCI_PREG_CMD_FR, 1)) return (2); /* XXX FBS: possibly disable FBS here? */ return (0); } /* AHCI command list override -> forcibly clear TFD.STS.{BSY,DRQ} */ int ahci_port_clo(struct ahci_port *ap) { struct ahci_softc *sc = ap->ap_sc; u_int32_t cmd; /* Only attempt CLO if supported by controller */ if (!ISSET(ahci_read(sc, AHCI_REG_CAP), AHCI_REG_CAP_SCLO)) return (1); /* Issue CLO */ cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; #ifdef DIAGNOSTIC if (ISSET(cmd, AHCI_PREG_CMD_ST)) printf("%s: CLO requested while port running\n", PORTNAME(ap)); #endif ahci_pwrite(ap, AHCI_PREG_CMD, cmd | AHCI_PREG_CMD_CLO); /* Wait for completion */ if (ahci_pwait_clr(ap, AHCI_PREG_CMD, AHCI_PREG_CMD_CLO, 1)) { printf("%s: CLO did not complete\n", PORTNAME(ap)); return (1); } return (0); } /* AHCI soft reset, Section 10.4.1 */ int ahci_port_softreset(struct ahci_port *ap) { struct ahci_ccb *ccb = NULL; struct ahci_cmd_hdr *cmd_slot; u_int8_t *fis; int s, rc = EIO, oldstate; u_int32_t cmd; DPRINTF(AHCI_D_VERBOSE, "%s: soft reset\n", PORTNAME(ap)); s = splbio(); oldstate = ap->ap_state; ap->ap_state = AP_S_ERROR_RECOVERY; /* Save previous command register state */ cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; /* Idle port */ if (ahci_port_stop(ap, 0)) { printf("%s: failed to stop port, cannot softreset\n", PORTNAME(ap)); goto err; } /* Request CLO if device appears hung */ if (ISSET(ahci_pread(ap, AHCI_PREG_TFD), AHCI_PREG_TFD_STS_BSY | AHCI_PREG_TFD_STS_DRQ)) ahci_port_clo(ap); /* Clear port errors to permit TFD transfer */ ahci_pwrite(ap, AHCI_PREG_SERR, ahci_pread(ap, AHCI_PREG_SERR)); /* XXX FBS - need to ensure we don't enable FBS here, since we're * resetting stuff * (AHCI spec 9.3.8) */ /* Restart port */ if (ahci_port_start(ap, 0)) { printf("%s: failed to start port, cannot softreset\n", PORTNAME(ap)); goto err; } /* Check whether CLO worked */ if (ahci_pwait_clr(ap, AHCI_PREG_TFD, AHCI_PREG_TFD_STS_BSY | AHCI_PREG_TFD_STS_DRQ, 1)) { printf("%s: CLO %s, need port reset\n", PORTNAME(ap), ISSET(ahci_read(ap->ap_sc, AHCI_REG_CAP), AHCI_REG_CAP_SCLO) ? "failed" : "unsupported"); rc = EBUSY; goto err; } /* Prep first D2H command with SRST feature & clear busy/reset flags */ ccb = ahci_get_err_ccb(ap); cmd_slot = ccb->ccb_cmd_hdr; memset(ccb->ccb_cmd_table, 0, sizeof(struct ahci_cmd_table)); fis = ccb->ccb_cmd_table->cfis; fis[0] = ATA_FIS_TYPE_H2D; fis[15] = ATA_FIS_CONTROL_SRST; cmd_slot->prdtl = 0; htolem16(&cmd_slot->flags, 5 /* FIS length: 5 DWORDS */ | AHCI_CMD_LIST_FLAG_C | AHCI_CMD_LIST_FLAG_R | AHCI_CMD_LIST_FLAG_W); ccb->ccb_xa.state = ATA_S_PENDING; if (ahci_poll(ccb, 1000, NULL) != 0) goto err; /* Prep second D2H command to read status and complete reset sequence */ fis[0] = ATA_FIS_TYPE_H2D; fis[15] = 0; cmd_slot->prdtl = 0; htolem16(&cmd_slot->flags, 5 | AHCI_CMD_LIST_FLAG_W); ccb->ccb_xa.state = ATA_S_PENDING; if (ahci_poll(ccb, 1000, NULL) != 0) goto err; if (ahci_pwait_clr(ap, AHCI_PREG_TFD, AHCI_PREG_TFD_STS_BSY | AHCI_PREG_TFD_STS_DRQ | AHCI_PREG_TFD_STS_ERR, 1)) { printf("%s: device didn't come ready after reset, TFD: 0x%b\n", PORTNAME(ap), ahci_pread(ap, AHCI_PREG_TFD), AHCI_PFMT_TFD_STS); rc = EBUSY; goto err; } rc = 0; err: if (ccb != NULL) { /* Abort our command, if it failed, by stopping command DMA. */ if (rc != 0 && ISSET(ap->ap_active, 1 << ccb->ccb_slot)) { printf("%s: stopping the port, softreset slot %d was " "still active.\n", PORTNAME(ap), ccb->ccb_slot); ahci_port_stop(ap, 0); } ccb->ccb_xa.state = ATA_S_ERROR; ahci_put_err_ccb(ccb); } /* Restore saved CMD register state */ ahci_pwrite(ap, AHCI_PREG_CMD, cmd); ap->ap_state = oldstate; splx(s); return (rc); } int ahci_pmp_port_softreset(struct ahci_port *ap, int pmp_port) { struct ahci_ccb *ccb = NULL; u_int32_t data; int count; int rc; int s; struct ahci_cmd_hdr *cmd_slot; u_int8_t *fis; /* XXX FBS: ensure fbs is disabled on ap, since we're resetting * devices (AHCI section 9.3.8) */ s = splbio(); /* ignore spurious IFS errors while resetting */ DPRINTF(AHCI_D_VERBOSE, "%s: now ignoring IFS\n", PORTNAME(ap)); ap->ap_pmp_ignore_ifs = 1; count = 2; rc = 0; do { if (ccb != NULL) { ahci_put_pmp_ccb(ccb); ccb = NULL; } if (ahci_pmp_phy_status(ap, pmp_port, &data)) { printf("%s.%d: unable to clear PHY status\n", PORTNAME(ap), pmp_port); } ahci_pwrite(ap, AHCI_PREG_SERR, -1); /* maybe don't do this on the first loop: */ ahci_pwrite(ap, AHCI_PREG_IS, AHCI_PREG_IS_IFS); ahci_pmp_write(ap, pmp_port, SATA_PMREG_SERR, -1); /* send first softreset FIS */ ccb = ahci_get_pmp_ccb(ap); cmd_slot = ccb->ccb_cmd_hdr; memset(ccb->ccb_cmd_table, 0, sizeof(struct ahci_cmd_table)); fis = ccb->ccb_cmd_table->cfis; fis[0] = ATA_FIS_TYPE_H2D; fis[1] = pmp_port; fis[15] = ATA_FIS_CONTROL_SRST | ATA_FIS_CONTROL_4BIT; cmd_slot->prdtl = 0; htolem16(&cmd_slot->flags, 5 /* FIS length: 5 DWORDS */ | AHCI_CMD_LIST_FLAG_C | AHCI_CMD_LIST_FLAG_R | (pmp_port << AHCI_CMD_LIST_FLAG_PMP_SHIFT)); ccb->ccb_xa.state = ATA_S_PENDING; DPRINTF(AHCI_D_VERBOSE, "%s.%d: sending PMP softreset cmd\n", PORTNAME(ap), pmp_port); if (ahci_poll(ccb, 1000, ahci_pmp_probe_timeout) != 0) { printf("%s.%d: PMP port softreset cmd failed\n", PORTNAME(ap), pmp_port); rc = EBUSY; if (count > 0) { /* probably delay a while to allow * it to settle down? */ } continue; } /* send signature FIS */ memset(ccb->ccb_cmd_table, 0, sizeof(struct ahci_cmd_table)); fis[0] = ATA_FIS_TYPE_H2D; fis[1] = pmp_port; fis[15] = ATA_FIS_CONTROL_4BIT; cmd_slot->prdtl = 0; htolem16(&cmd_slot->flags, 5 /* FIS length: 5 DWORDS */ | (pmp_port << AHCI_CMD_LIST_FLAG_PMP_SHIFT)); DPRINTF(AHCI_D_VERBOSE, "%s.%d: sending PMP probe status cmd\n", PORTNAME(ap), pmp_port); ccb->ccb_xa.state = ATA_S_PENDING; if (ahci_poll(ccb, 5000, ahci_pmp_probe_timeout) != 0) { DPRINTF(AHCI_D_VERBOSE, "%s.%d: PMP probe status cmd " "failed\n", PORTNAME(ap), pmp_port); rc = EBUSY; if (count > 0) { /* sleep a while? */ } continue; } fis[15] = 0; break; } while (count--); if (ccb != NULL) { ahci_put_pmp_ccb(ccb); ccb = NULL; } /* clean up a bit */ ahci_pmp_write(ap, pmp_port, SATA_PMREG_SERR, -1); ahci_pwrite(ap, AHCI_PREG_SERR, -1); ahci_pwrite(ap, AHCI_PREG_IS, AHCI_PREG_IS_IFS); ap->ap_pmp_ignore_ifs = 0; DPRINTF(AHCI_D_VERBOSE, "%s: no longer ignoring IFS\n", PORTNAME(ap)); splx(s); return (rc); } int ahci_pmp_port_probe(struct ahci_port *ap, int pmp_port) { int sig; ap->ap_state = AP_S_PMP_PORT_PROBE; DPRINTF(AHCI_D_VERBOSE, "%s.%d: probing pmp port\n", PORTNAME(ap), pmp_port); if (ahci_pmp_port_portreset(ap, pmp_port)) { printf("%s.%d: unable to probe PMP port; portreset failed\n", PORTNAME(ap), pmp_port); ap->ap_state = AP_S_NORMAL; return (ATA_PORT_T_NONE); } if (ahci_pmp_port_softreset(ap, pmp_port)) { printf("%s.%d: unable to probe PMP port due to softreset " "failure\n", PORTNAME(ap), pmp_port); ap->ap_state = AP_S_NORMAL; return (ATA_PORT_T_NONE); } sig = ahci_port_signature(ap); DPRINTF(AHCI_D_VERBOSE, "%s.%d: port signature returned %d\n", PORTNAME(ap), pmp_port, sig); ap->ap_state = AP_S_NORMAL; return (sig); } void ahci_flush_tfd(struct ahci_port *ap) { u_int32_t r; r = ahci_pread(ap, AHCI_PREG_SERR); if (r & AHCI_PREG_SERR_DIAG_X) ahci_pwrite(ap, AHCI_PREG_SERR, AHCI_PREG_SERR_DIAG_X); } u_int32_t ahci_active_mask(struct ahci_port *ap) { u_int32_t mask; mask = ahci_pread(ap, AHCI_PREG_CI); if (ap->ap_sc->sc_cap & AHCI_REG_CAP_SNCQ) mask |= ahci_pread(ap, AHCI_PREG_SACT); return mask; } void ahci_pmp_probe_timeout(void *cookie) { struct ahci_ccb *ccb = cookie; struct ahci_port *ap = ccb->ccb_port; u_int32_t mask; DPRINTF(AHCI_D_VERBOSE, "%s: PMP probe cmd timed out\n", PORTNAME(ap)); switch (ccb->ccb_xa.state) { case ATA_S_PENDING: TAILQ_REMOVE(&ap->ap_ccb_pending, ccb, ccb_entry); ccb->ccb_xa.state = ATA_S_TIMEOUT; break; case ATA_S_ONCHIP: case ATA_S_ERROR: /* currently mostly here for the ATI SBx00 quirk */ /* clear the command on-chip */ KASSERT(ap->ap_active == (1 << ccb->ccb_slot) && ap->ap_sactive == 0); ahci_port_stop(ap, 0); ahci_port_start(ap, 0); if (ahci_active_mask(ap) != 0) { ahci_port_stop(ap, 0); ahci_port_start(ap, 0); mask = ahci_active_mask(ap); if (mask != 0) { printf("%s: ahci_pmp_probe_timeout: failed to " "clear active cmds: %08x\n", PORTNAME(ap), mask); } } ccb->ccb_xa.state = ATA_S_TIMEOUT; ap->ap_active &= ~(1 << ccb->ccb_slot); KASSERT(ap->ap_active_cnt > 0); --ap->ap_active_cnt; DPRINTF(AHCI_D_VERBOSE, "%s: timed out %d, active %x, count %d\n", PORTNAME(ap), ccb->ccb_slot, ap->ap_active, ap->ap_active_cnt); break; default: panic("%s: ahci_pmp_probe_timeout: ccb in bad state %d", PORTNAME(ap), ccb->ccb_xa.state); } } int ahci_port_signature(struct ahci_port *ap) { u_int32_t sig; sig = ahci_pread(ap, AHCI_PREG_SIG); if ((sig & 0xffff0000) == (SATA_SIGNATURE_ATAPI & 0xffff0000)) return (ATA_PORT_T_ATAPI); else if ((sig & 0xffff0000) == (SATA_SIGNATURE_PORT_MULTIPLIER & 0xffff0000)) return (ATA_PORT_T_PM); else return (ATA_PORT_T_DISK); } int ahci_pmp_port_portreset(struct ahci_port *ap, int pmp_port) { u_int32_t cmd, data; int loop; int rc = 1; int s; s = splbio(); DPRINTF(AHCI_D_VERBOSE, "%s.%d: PMP port reset\n", PORTNAME(ap), pmp_port); cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; /* turn off power management and disable the PHY */ data = AHCI_PREG_SCTL_IPM_DISABLED; /* maybe add AHCI_PREG_SCTL_DET_DISABLE */ if (ahci_pmp_write(ap, pmp_port, SATA_PMREG_SERR, -1)) goto err; if (ahci_pmp_write(ap, pmp_port, SATA_PMREG_SCTL, data)) goto err; delay(10000); /* start COMRESET */ data = AHCI_PREG_SCTL_IPM_DISABLED | AHCI_PREG_SCTL_DET_INIT; if ((ap->ap_sc->sc_dev.dv_cfdata->cf_flags & 0x01) != 0) { DPRINTF(AHCI_D_VERBOSE, "%s.%d: forcing GEN1\n", PORTNAME(ap), pmp_port); data |= AHCI_PREG_SCTL_SPD_GEN1; } else data |= AHCI_PREG_SCTL_SPD_ANY; if (ahci_pmp_write(ap, pmp_port, SATA_PMREG_SCTL, data)) goto err; /* give it a while to settle down */ delay(100000); if (ahci_pmp_phy_status(ap, pmp_port, &data)) { printf("%s.%d: cannot clear PHY status\n", PORTNAME(ap), pmp_port); } /* start trying to negotiate */ ahci_pmp_write(ap, pmp_port, SATA_PMREG_SERR, -1); data = AHCI_PREG_SCTL_IPM_DISABLED | AHCI_PREG_SCTL_DET_NONE; if (ahci_pmp_write(ap, pmp_port, SATA_PMREG_SCTL, data)) goto err; /* give it a while to detect */ for (loop = 3; loop; --loop) { if (ahci_pmp_read(ap, pmp_port, SATA_PMREG_SSTS, &data)) goto err; if (data & AHCI_PREG_SSTS_DET) break; delay(100000); } if (loop == 0) { printf("%s.%d: port is unplugged\n", PORTNAME(ap), pmp_port); goto err; } /* give it even longer to fully negotiate */ for (loop = 30; loop; --loop) { if (ahci_pmp_read(ap, pmp_port, SATA_PMREG_SSTS, &data)) goto err; if ((data & AHCI_PREG_SSTS_DET) == AHCI_PREG_SSTS_DET_DEV) break; delay(100000); } if (loop == 0) { printf("%s.%d: device is not negotiating\n", PORTNAME(ap), pmp_port); goto err; } /* device detected */ DPRINTF(AHCI_D_VERBOSE, "%s.%d: device detected\n", PORTNAME(ap), pmp_port); /* clean up a bit */ delay(100000); ahci_pmp_write(ap, pmp_port, SATA_PMREG_SERR, -1); ahci_pwrite(ap, AHCI_PREG_SERR, -1); ahci_pwrite(ap, AHCI_PREG_IS, AHCI_PREG_IS_IFS); rc = 0; err: splx(s); return (rc); } /* AHCI port reset, Section 10.4.2 */ int ahci_port_portreset(struct ahci_port *ap, int pmp) { u_int32_t cmd, r; int rc, s, retries = 0; s = splbio(); DPRINTF(AHCI_D_VERBOSE, "%s: port reset\n", PORTNAME(ap)); /* Save previous command register state */ cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; /* Clear ST, ignoring failure */ ahci_port_stop(ap, 0); /* Perform device detection */ ahci_pwrite(ap, AHCI_PREG_SCTL, 0); retry: delay(10000); r = AHCI_PREG_SCTL_IPM_DISABLED | AHCI_PREG_SCTL_DET_INIT; if ((ap->ap_sc->sc_dev.dv_cfdata->cf_flags & 0x01) != 0) { DPRINTF(AHCI_D_VERBOSE, "%s: forcing GEN1\n", PORTNAME(ap)); r |= AHCI_PREG_SCTL_SPD_GEN1; } else r |= AHCI_PREG_SCTL_SPD_ANY; ahci_pwrite(ap, AHCI_PREG_SCTL, r); delay(10000); /* wait at least 1ms for COMRESET to be sent */ r &= ~AHCI_PREG_SCTL_DET_INIT; r |= AHCI_PREG_SCTL_DET_NONE; ahci_pwrite(ap, AHCI_PREG_SCTL, r); delay(10000); /* Wait for device to be detected and communications established */ if (ahci_pwait_eq(ap, AHCI_PREG_SSTS, AHCI_PREG_SSTS_DET, AHCI_PREG_SSTS_DET_DEV, 1)) { rc = ENODEV; if (ahci_pread(ap, AHCI_PREG_SSTS) & AHCI_PREG_SSTS_DET) { /* this may be a port multiplier with no device * on port 0, so still do the pmp check if requested. */ } else { goto err; } } else { /* Clear SERR (incl X bit), so TFD can update */ ahci_pwrite(ap, AHCI_PREG_SERR, ahci_pread(ap, AHCI_PREG_SERR)); /* Wait for device to become ready */ if (ahci_pwait_clr(ap, AHCI_PREG_TFD, AHCI_PREG_TFD_STS_BSY | AHCI_PREG_TFD_STS_DRQ | AHCI_PREG_TFD_STS_ERR, 3)) { /* even if the device doesn't wake up, check if there's * a port multiplier there */ if (retries == 0) { retries = 1; goto retry; } rc = EBUSY; } else { rc = 0; } } if (pmp != 0) { if (ahci_port_detect_pmp(ap) != 0) { rc = EBUSY; } } err: /* Restore preserved port state */ ahci_pwrite(ap, AHCI_PREG_CMD, cmd); splx(s); return (rc); } int ahci_port_detect_pmp(struct ahci_port *ap) { int count, pmp_rc, rc; u_int32_t r, cmd; struct ahci_cmd_hdr *cmd_slot; struct ahci_ccb *ccb = NULL; u_int8_t *fis = NULL; if ((ap->ap_sc->sc_flags & AHCI_F_NO_PMP) || !ISSET(ahci_read(ap->ap_sc, AHCI_REG_CAP), AHCI_REG_CAP_SPM)) { return 0; } rc = 0; pmp_rc = 0; count = 2; do { DPRINTF(AHCI_D_VERBOSE, "%s: PMP probe %d\n", PORTNAME(ap), count); if (ccb != NULL) { ahci_put_pmp_ccb(ccb); ccb = NULL; } ahci_port_stop(ap, 0); ap->ap_state = AP_S_PMP_PROBE; /* set PMA in cmd reg */ cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; if ((cmd & AHCI_PREG_CMD_PMA) == 0) { cmd |= AHCI_PREG_CMD_PMA; ahci_pwrite(ap, AHCI_PREG_CMD, cmd); } /* Flush errors and request CLO unconditionally, * then start the port */ r = ahci_pread(ap, AHCI_PREG_SERR); if (r & AHCI_PREG_SERR_DIAG_X) ahci_pwrite(ap, AHCI_PREG_SERR, AHCI_PREG_SERR_DIAG_X); /* Request CLO */ ahci_port_clo(ap); /* Clear port errors to permit TFD transfer */ r = ahci_pread(ap, AHCI_PREG_SERR); ahci_pwrite(ap, AHCI_PREG_SERR, r); /* XXX FBS: ensure we don't enable FBS here, since * we're resetting the port * (AHCI section 9.3.8) */ /* Restart port */ if (ahci_port_start(ap, 0)) { rc = EBUSY; printf("%s: failed to start port, cannot probe PMP\n", PORTNAME(ap)); break; } /* Check whether CLO worked */ if (ahci_pwait_clr(ap, AHCI_PREG_TFD, AHCI_PREG_TFD_STS_BSY | AHCI_PREG_TFD_STS_DRQ, 1)) { u_int32_t cap; cap = ahci_read(ap->ap_sc, AHCI_REG_CAP); printf("%s: CLO %s, need port reset\n", PORTNAME(ap), ISSET(cap, AHCI_REG_CAP_SCLO) ? "failed" : "unsupported"); pmp_rc = EBUSY; break; } /* Prep first command with SRST feature & * clear busy/reset flags */ ccb = ahci_get_pmp_ccb(ap); cmd_slot = ccb->ccb_cmd_hdr; memset(ccb->ccb_cmd_table, 0, sizeof(struct ahci_cmd_table)); fis = ccb->ccb_cmd_table->cfis; fis[0] = ATA_FIS_TYPE_H2D; fis[1] = SATA_PMP_CONTROL_PORT; fis[15] = ATA_FIS_CONTROL_SRST | ATA_FIS_CONTROL_4BIT; cmd_slot->prdtl = 0; htolem16(&cmd_slot->flags, 5 /* FIS length: 5 DWORDS */ | AHCI_CMD_LIST_FLAG_C | AHCI_CMD_LIST_FLAG_R | AHCI_CMD_LIST_FLAG_PMP); DPRINTF(AHCI_D_VERBOSE, "%s: sending PMP reset cmd\n", PORTNAME(ap)); ccb->ccb_xa.state = ATA_S_PENDING; if (ahci_poll(ccb, 1000, ahci_pmp_probe_timeout) != 0) { DPRINTF(AHCI_D_VERBOSE, "%s: PMP reset cmd failed\n", PORTNAME(ap)); pmp_rc = EBUSY; continue; } if (ahci_pwait_clr(ap, AHCI_PREG_TFD, AHCI_PREG_TFD_STS_BSY | AHCI_PREG_TFD_STS_DRQ, 1)) { printf("%s: port busy after first PMP probe FIS\n", PORTNAME(ap)); } /* clear errors in case the device * didn't reset cleanly */ ahci_flush_tfd(ap); r = ahci_pread(ap, AHCI_PREG_SERR); ahci_pwrite(ap, AHCI_PREG_SERR, r); /* Prep second command to read status and * complete reset sequence */ memset(ccb->ccb_cmd_table, 0, sizeof(struct ahci_cmd_table)); fis[0] = ATA_FIS_TYPE_H2D; fis[1] = SATA_PMP_CONTROL_PORT; fis[15] = ATA_FIS_CONTROL_4BIT; cmd_slot->prdtl = 0; htolem16(&cmd_slot->flags, 5 /* FIS length: 5 DWORDS */ | AHCI_CMD_LIST_FLAG_PMP); DPRINTF(AHCI_D_VERBOSE, "%s: sending PMP probe status cmd\n", PORTNAME(ap)); ccb->ccb_xa.state = ATA_S_PENDING; if (ahci_poll(ccb, 5000, ahci_pmp_probe_timeout) != 0) { DPRINTF(AHCI_D_VERBOSE, "%s: PMP probe status " "cmd failed\n", PORTNAME(ap)); pmp_rc = EBUSY; continue; } /* apparently we need to retry at least once * to get the right signature */ fis[15] = 0; pmp_rc = 0; } while (--count); if (ccb != NULL) { ahci_put_pmp_ccb(ccb); ccb = NULL; } if (ap->ap_state == AP_S_PMP_PROBE) { ap->ap_state = AP_S_NORMAL; } if (pmp_rc == 0) { if (ahci_port_signature(ap) != ATA_PORT_T_PM) { DPRINTF(AHCI_D_VERBOSE, "%s: device is not a PMP\n", PORTNAME(ap)); pmp_rc = EBUSY; } else { DPRINTF(AHCI_D_VERBOSE, "%s: PMP found\n", PORTNAME(ap)); } } if (pmp_rc == 0) { if (ahci_pmp_identify(ap, &ap->ap_pmp_ports)) { pmp_rc = EBUSY; } else { /* XXX enable FBS if available */ rc = 0; } } /* if PMP detection failed, so turn off the PMA bit and * reset the port again */ if (pmp_rc != 0) { DPRINTF(AHCI_D_VERBOSE, "%s: no PMP found, resetting " "the port\n", PORTNAME(ap)); ahci_port_stop(ap, 0); ahci_port_clo(ap); cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; cmd &= ~AHCI_PREG_CMD_PMA; ahci_pwrite(ap, AHCI_PREG_CMD, cmd); ahci_pwrite(ap, AHCI_PREG_IE, 0); ahci_port_stop(ap, 0); if (ap->ap_sc->sc_cap & AHCI_REG_CAP_SSNTF) ahci_pwrite(ap, AHCI_PREG_SNTF, -1); ahci_flush_tfd(ap); ahci_pwrite(ap, AHCI_PREG_SERR, -1); ahci_pwrite(ap, AHCI_PREG_IS, -1); ahci_enable_interrupts(ap); ahci_port_portreset(ap, 0); } return (rc); } void ahci_load_prdt_seg(struct ahci_prdt *prd, u_int64_t addr, u_int32_t len, u_int32_t flags) { flags |= len - 1; htolem64(&prd->dba, addr); htolem32(&prd->flags, flags); } int ahci_load_prdt(struct ahci_ccb *ccb) { struct ahci_port *ap = ccb->ccb_port; struct ahci_softc *sc = ap->ap_sc; struct ata_xfer *xa = &ccb->ccb_xa; struct ahci_prdt *prdt = ccb->ccb_cmd_table->prdt; bus_dmamap_t dmap = ccb->ccb_dmamap; struct ahci_cmd_hdr *cmd_slot = ccb->ccb_cmd_hdr; int i, error; if (xa->datalen == 0) { ccb->ccb_cmd_hdr->prdtl = 0; return (0); } error = bus_dmamap_load(sc->sc_dmat, dmap, xa->data, xa->datalen, NULL, (xa->flags & ATA_F_NOWAIT) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK); if (error != 0) { printf("%s: error %d loading dmamap\n", PORTNAME(ap), error); return (1); } for (i = 0; i < dmap->dm_nsegs - 1; i++) { ahci_load_prdt_seg(&prdt[i], dmap->dm_segs[i].ds_addr, dmap->dm_segs[i].ds_len, 0); } ahci_load_prdt_seg(&prdt[i], dmap->dm_segs[i].ds_addr, dmap->dm_segs[i].ds_len, ISSET(xa->flags, ATA_F_PIO) ? AHCI_PRDT_FLAG_INTR : 0); htolem16(&cmd_slot->prdtl, dmap->dm_nsegs); bus_dmamap_sync(sc->sc_dmat, dmap, 0, dmap->dm_mapsize, (xa->flags & ATA_F_READ) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); return (0); } void ahci_unload_prdt(struct ahci_ccb *ccb) { struct ahci_port *ap = ccb->ccb_port; struct ahci_softc *sc = ap->ap_sc; struct ata_xfer *xa = &ccb->ccb_xa; bus_dmamap_t dmap = ccb->ccb_dmamap; if (xa->datalen != 0) { bus_dmamap_sync(sc->sc_dmat, dmap, 0, dmap->dm_mapsize, (xa->flags & ATA_F_READ) ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->sc_dmat, dmap); if (ccb->ccb_xa.flags & ATA_F_NCQ) xa->resid = 0; else xa->resid = xa->datalen - lemtoh32(&ccb->ccb_cmd_hdr->prdbc); } } int ahci_poll(struct ahci_ccb *ccb, int timeout, void (*timeout_fn)(void *)) { struct ahci_port *ap = ccb->ccb_port; int s; s = splbio(); ahci_start(ccb); do { if (ISSET(ahci_port_intr(ap, AHCI_PREG_CI_ALL_SLOTS), 1 << ccb->ccb_slot)) { splx(s); return (0); } if (ccb->ccb_xa.state == ATA_S_ERROR) { DPRINTF(AHCI_D_VERBOSE, "%s: ccb in slot %d errored\n", PORTNAME(ap), ccb->ccb_slot); /* pretend it timed out? */ if (timeout_fn != NULL) { timeout_fn(ccb); } splx(s); return (1); } delay(1000); } while (--timeout > 0); /* Run timeout while at splbio, otherwise ahci_intr could interfere. */ if (timeout_fn != NULL) timeout_fn(ccb); splx(s); return (1); } void ahci_start(struct ahci_ccb *ccb) { struct ahci_port *ap = ccb->ccb_port; struct ahci_softc *sc = ap->ap_sc; /* Zero transferred byte count before transfer */ ccb->ccb_cmd_hdr->prdbc = 0; /* Sync command list entry and corresponding command table entry */ bus_dmamap_sync(sc->sc_dmat, AHCI_DMA_MAP(ap->ap_dmamem_cmd_list), ccb->ccb_slot * sizeof(struct ahci_cmd_hdr), sizeof(struct ahci_cmd_hdr), BUS_DMASYNC_PREWRITE); bus_dmamap_sync(sc->sc_dmat, AHCI_DMA_MAP(ap->ap_dmamem_cmd_table), ccb->ccb_slot * sizeof(struct ahci_cmd_table), sizeof(struct ahci_cmd_table), BUS_DMASYNC_PREWRITE); /* Prepare RFIS area for write by controller */ bus_dmamap_sync(sc->sc_dmat, AHCI_DMA_MAP(ap->ap_dmamem_rfis), 0, sizeof(struct ahci_rfis), BUS_DMASYNC_PREREAD); /* XXX FBS: need to figure out whether we still need to keep NCQ and * non-queued commands separate when FBS is in use. I guess probably * not? it's not particularly clear from the spec.. */ if (ccb->ccb_xa.flags & ATA_F_NCQ) { /* Issue NCQ commands only when there are no outstanding * standard commands. */ if (ap->ap_active != 0 || !TAILQ_EMPTY(&ap->ap_ccb_pending) || (ap->ap_sactive != 0 && ap->ap_pmp_ncq_port != ccb->ccb_xa.pmp_port)) { TAILQ_INSERT_TAIL(&ap->ap_ccb_pending, ccb, ccb_entry); } else { /* XXX FBS: if using FBS, set AHCI_PREG_FBS_DEV * to the port number */ KASSERT(ap->ap_active_cnt == 0); ap->ap_sactive |= (1 << ccb->ccb_slot); ccb->ccb_xa.state = ATA_S_ONCHIP; ahci_pwrite(ap, AHCI_PREG_SACT, 1 << ccb->ccb_slot); ahci_pwrite(ap, AHCI_PREG_CI, 1 << ccb->ccb_slot); ap->ap_pmp_ncq_port = ccb->ccb_xa.pmp_port; } } else { /* Wait for all NCQ commands to finish before issuing standard * command. */ if (ap->ap_sactive != 0 || ap->ap_active_cnt == 2) TAILQ_INSERT_TAIL(&ap->ap_ccb_pending, ccb, ccb_entry); else if (ap->ap_active_cnt < 2) { /* XXX FBS: if using FBS, set AHCI_PREG_FBS_DEV to the * port number */ ap->ap_active |= 1 << ccb->ccb_slot; ccb->ccb_xa.state = ATA_S_ONCHIP; ahci_pwrite(ap, AHCI_PREG_CI, 1 << ccb->ccb_slot); ap->ap_active_cnt++; } } } void ahci_issue_pending_ncq_commands(struct ahci_port *ap) { struct ahci_ccb *nextccb; u_int32_t sact_change = 0; KASSERT(ap->ap_active_cnt == 0); nextccb = TAILQ_FIRST(&ap->ap_ccb_pending); if (nextccb == NULL || !(nextccb->ccb_xa.flags & ATA_F_NCQ)) return; /* XXX FBS: * - set AHCI_PREG_FBS_DEV for each command * - one write to AHCI_PREG_CI per command */ /* Start all the NCQ commands at the head of the pending list. * If a port multiplier is attached to the port, we can only * issue commands for one of its ports at a time. */ if (ap->ap_sactive != 0 && ap->ap_pmp_ncq_port != nextccb->ccb_xa.pmp_port) { return; } ap->ap_pmp_ncq_port = nextccb->ccb_xa.pmp_port; do { TAILQ_REMOVE(&ap->ap_ccb_pending, nextccb, ccb_entry); sact_change |= 1 << nextccb->ccb_slot; nextccb->ccb_xa.state = ATA_S_ONCHIP; nextccb = TAILQ_FIRST(&ap->ap_ccb_pending); } while (nextccb && (nextccb->ccb_xa.flags & ATA_F_NCQ) && (nextccb->ccb_xa.pmp_port == ap->ap_pmp_ncq_port)); ap->ap_sactive |= sact_change; ahci_pwrite(ap, AHCI_PREG_SACT, sact_change); ahci_pwrite(ap, AHCI_PREG_CI, sact_change); } void ahci_issue_pending_commands(struct ahci_port *ap, int last_was_ncq) { struct ahci_ccb *nextccb; nextccb = TAILQ_FIRST(&ap->ap_ccb_pending); if (nextccb && (nextccb->ccb_xa.flags & ATA_F_NCQ)) { if (last_was_ncq) { KASSERT(nextccb->ccb_xa.pmp_port != ap->ap_pmp_ncq_port); /* otherwise it should have been started already */ } else { ap->ap_active_cnt--; } /* Issue NCQ commands only when there are no outstanding * standard commands, and previous NCQ commands for other * PMP ports have finished. */ if (ap->ap_active == 0) ahci_issue_pending_ncq_commands(ap); else KASSERT(ap->ap_active_cnt == 1); } else if (nextccb) { if (ap->ap_sactive != 0 || last_was_ncq) KASSERT(ap->ap_active_cnt == 0); /* Wait for all NCQ commands to finish before issuing standard * command. */ if (ap->ap_sactive != 0) return; /* Keep up to 2 standard commands on-chip at a time. */ do { TAILQ_REMOVE(&ap->ap_ccb_pending, nextccb, ccb_entry); ap->ap_active |= 1 << nextccb->ccb_slot; nextccb->ccb_xa.state = ATA_S_ONCHIP; /* XXX FBS: set AHCI_PREG_FBS_DEV here */ ahci_pwrite(ap, AHCI_PREG_CI, 1 << nextccb->ccb_slot); if (last_was_ncq) ap->ap_active_cnt++; if (ap->ap_active_cnt == 2) break; KASSERT(ap->ap_active_cnt == 1); nextccb = TAILQ_FIRST(&ap->ap_ccb_pending); } while (nextccb && !(nextccb->ccb_xa.flags & ATA_F_NCQ)); } else if (!last_was_ncq) { KASSERT(ap->ap_active_cnt == 1 || ap->ap_active_cnt == 2); /* Standard command finished, none waiting to start. */ ap->ap_active_cnt--; } else { KASSERT(ap->ap_active_cnt == 0); /* NCQ command finished. */ } } int ahci_intr(void *arg) { struct ahci_softc *sc = arg; u_int32_t is, ack = 0; int port; /* Read global interrupt status */ is = ahci_read(sc, AHCI_REG_IS); if (is == 0 || is == 0xffffffff) return (0); ack = is; #ifdef AHCI_COALESCE /* Check coalescing interrupt first */ if (is & sc->sc_ccc_mask) { DPRINTF(AHCI_D_INTR, "%s: command coalescing interrupt\n", DEVNAME(sc)); is &= ~sc->sc_ccc_mask; is |= sc->sc_ccc_ports_cur; } #endif /* Process interrupts for each port */ while (is) { port = ffs(is) - 1; if (sc->sc_ports[port]) ahci_port_intr(sc->sc_ports[port], AHCI_PREG_CI_ALL_SLOTS); is &= ~(1 << port); } /* Finally, acknowledge global interrupt */ ahci_write(sc, AHCI_REG_IS, ack); return (1); } u_int32_t ahci_port_intr(struct ahci_port *ap, u_int32_t ci_mask) { struct ahci_softc *sc = ap->ap_sc; u_int32_t is, ci_saved, ci_masked, processed = 0; int slot, need_restart = 0; int process_error = 0; struct ahci_ccb *ccb; volatile u_int32_t *active; #ifdef DIAGNOSTIC u_int32_t tmp; #endif is = ahci_pread(ap, AHCI_PREG_IS); /* Ack port interrupt only if checking all command slots. */ if (ci_mask == AHCI_PREG_CI_ALL_SLOTS) ahci_pwrite(ap, AHCI_PREG_IS, is); if (is) DPRINTF(AHCI_D_INTR, "%s: interrupt: %b\n", PORTNAME(ap), is, AHCI_PFMT_IS); if (ap->ap_sactive) { /* Active NCQ commands - use SActive instead of CI */ KASSERT(ap->ap_active == 0); KASSERT(ap->ap_active_cnt == 0); ci_saved = ahci_pread(ap, AHCI_PREG_SACT); active = &ap->ap_sactive; } else { /* Save CI */ ci_saved = ahci_pread(ap, AHCI_PREG_CI); active = &ap->ap_active; } if (is & AHCI_PREG_IS_TFES) { process_error = 1; } else if (is & AHCI_PREG_IS_DHRS) { u_int32_t tfd; u_int32_t cmd; u_int32_t serr; tfd = ahci_pread(ap, AHCI_PREG_TFD); cmd = ahci_pread(ap, AHCI_PREG_CMD); serr = ahci_pread(ap, AHCI_PREG_SERR); if ((tfd & AHCI_PREG_TFD_STS_ERR) && (cmd & AHCI_PREG_CMD_CR) == 0) { DPRINTF(AHCI_D_VERBOSE, "%s: DHRS error, TFD: %b, SERR:" " %b, DIAG: %b\n", PORTNAME(ap), tfd, AHCI_PFMT_TFD_STS, AHCI_PREG_SERR_ERR(serr), AHCI_PFMT_SERR_ERR, AHCI_PREG_SERR_DIAG(serr), AHCI_PFMT_SERR_DIAG); process_error = 1; } else { /* rfis copy back is in the normal execution path */ ahci_pwrite(ap, AHCI_PREG_IS, AHCI_PREG_IS_DHRS); } } /* Command failed. See AHCI 1.1 spec 6.2.2.1 and 6.2.2.2. */ if (process_error) { u_int32_t tfd, serr; int err_slot; tfd = ahci_pread(ap, AHCI_PREG_TFD); serr = ahci_pread(ap, AHCI_PREG_SERR); if (ap->ap_sactive == 0) { /* Errored slot is easy to determine from CMD. */ err_slot = AHCI_PREG_CMD_CCS(ahci_pread(ap, AHCI_PREG_CMD)); if ((ci_saved & (1 << err_slot)) == 0) { /* * Hardware doesn't seem to report correct * slot number. If there's only one * outstanding command we can cope, * otherwise fail all active commands. */ if (ap->ap_active_cnt == 1) err_slot = ffs(ap->ap_active) - 1; else goto failall; } ccb = &ap->ap_ccbs[err_slot]; /* Preserve received taskfile data from the RFIS. */ memcpy(&ccb->ccb_xa.rfis, ap->ap_rfis->rfis, sizeof(struct ata_fis_d2h)); } else err_slot = -1; /* Must extract error from log page */ DPRINTF(AHCI_D_VERBOSE, "%s: errored slot %d, TFD: %b, SERR:" " %b, DIAG: %b\n", PORTNAME(ap), err_slot, tfd, AHCI_PFMT_TFD_STS, AHCI_PREG_SERR_ERR(serr), AHCI_PFMT_SERR_ERR, AHCI_PREG_SERR_DIAG(serr), AHCI_PFMT_SERR_DIAG); /* Turn off ST to clear CI and SACT. */ ahci_port_stop(ap, 0); need_restart = 1; /* Clear SERR to enable capturing new errors. */ ahci_pwrite(ap, AHCI_PREG_SERR, serr); /* Acknowledge the interrupts we can recover from. */ ahci_pwrite(ap, AHCI_PREG_IS, AHCI_PREG_IS_TFES | AHCI_PREG_IS_IFS); is = ahci_pread(ap, AHCI_PREG_IS); /* If device hasn't cleared its busy status, try to idle it. */ if (ISSET(tfd, AHCI_PREG_TFD_STS_BSY | AHCI_PREG_TFD_STS_DRQ)) { if ((ap->ap_state == AP_S_PMP_PORT_PROBE) || (ap->ap_state == AP_S_ERROR_RECOVERY)) { /* can't reset the port here, just make sure * the operation fails and the port still works. */ } else if (ap->ap_pmp_ports != 0 && err_slot != -1) { printf("%s: error on PMP port %d, idling " "device\n", PORTNAME(ap), ccb->ccb_xa.pmp_port); if (ahci_pmp_port_softreset(ap, ccb->ccb_xa.pmp_port) == 0) { printf("%s: unable to softreset port " "%d\n", PORTNAME(ap), ccb->ccb_xa.pmp_port); if (ahci_pmp_port_portreset(ap, ccb->ccb_xa.pmp_port)) { printf("%s: failed to port " " reset %d, giving up on " "it\n", PORTNAME(ap), ccb->ccb_xa.pmp_port); goto fatal; } } } else { printf("%s: attempting to idle device\n", PORTNAME(ap)); if (ahci_port_softreset(ap)) { printf("%s: failed to soft reset " "device\n", PORTNAME(ap)); if (ahci_port_portreset(ap, 0)) { printf("%s: failed to port " "reset device, give up on " "it\n", PORTNAME(ap)); goto fatal; } } } /* Had to reset device, can't gather extended info. */ } else if (ap->ap_sactive) { /* Recover the NCQ error from log page 10h. * XXX FBS: need to do things to figure out where the * error came from. without FBS, we know the PMP port * responsible because we can only have queued commands * active for one port at a time. */ ahci_port_read_ncq_error(ap, &err_slot, ap->ap_pmp_ncq_port); if (err_slot < 0) goto failall; DPRINTF(AHCI_D_VERBOSE, "%s: NCQ errored slot %d\n", PORTNAME(ap), err_slot); ccb = &ap->ap_ccbs[err_slot]; } else { /* Didn't reset, could gather extended info from log. */ } /* * If we couldn't determine the errored slot, reset the port * and fail all the active slots. */ if (err_slot == -1) { if (ahci_port_softreset(ap) != 0 && ahci_port_portreset(ap, 0) != 0) { printf("%s: couldn't reset after NCQ error, " "disabling device.\n", PORTNAME(ap)); goto fatal; } printf("%s: couldn't recover NCQ error, failing " "all outstanding commands.\n", PORTNAME(ap)); goto failall; } /* Clear the failed command in saved CI so completion runs. */ ci_saved &= ~(1 << err_slot); /* Note the error in the ata_xfer. */ KASSERT(ccb->ccb_xa.state == ATA_S_ONCHIP); ccb->ccb_xa.state = ATA_S_ERROR; #ifdef DIAGNOSTIC /* There may only be one outstanding standard command now. */ if (ap->ap_sactive == 0) { tmp = ci_saved; if (tmp) { slot = ffs(tmp) - 1; tmp &= ~(1 << slot); KASSERT(tmp == 0); } } #endif } /* ATI SBx00 AHCI controllers respond to PMP probes with IPMS interrupts * when there's a normal SATA device attached. */ if ((ap->ap_state == AP_S_PMP_PROBE) && (ap->ap_sc->sc_flags & AHCI_F_IPMS_PROBE) && (is & AHCI_PREG_IS_IPMS)) { slot = AHCI_PREG_CMD_CCS(ahci_pread(ap, AHCI_PREG_CMD)); DPRINTF(AHCI_D_INTR, "%s: slot %d received IPMS\n", PORTNAME(ap), slot); ccb = &ap->ap_ccbs[slot]; ccb->ccb_xa.state = ATA_S_ERROR; ahci_pwrite(ap, AHCI_PREG_IS, AHCI_PREG_IS_IPMS); is &= ~AHCI_PREG_IS_IPMS; } /* ignore IFS errors while resetting a PMP port */ if ((is & AHCI_PREG_IS_IFS) /*&& ap->ap_pmp_ignore_ifs*/) { DPRINTF(AHCI_D_INTR, "%s: ignoring IFS while resetting PMP " "port\n", PORTNAME(ap)); need_restart = 1; ahci_pwrite(ap, AHCI_PREG_SERR, -1); ahci_pwrite(ap, AHCI_PREG_IS, AHCI_PREG_IS_IFS); is &= ~AHCI_PREG_IS_IFS; goto failall; } /* Check for remaining errors - they are fatal. */ if (is & (AHCI_PREG_IS_TFES | AHCI_PREG_IS_HBFS | AHCI_PREG_IS_IFS | AHCI_PREG_IS_OFS | AHCI_PREG_IS_UFS)) { printf("%s: unrecoverable errors (IS: %b), disabling port.\n", PORTNAME(ap), is, AHCI_PFMT_IS); /* XXX try recovery first */ goto fatal; } /* Fail all outstanding commands if we know the port won't recover. */ if (ap->ap_state == AP_S_FATAL_ERROR) { fatal: ap->ap_state = AP_S_FATAL_ERROR; failall: /* Ensure port is shut down. */ ahci_port_stop(ap, 1); /* Error all the active slots. */ ci_masked = ci_saved & *active; while (ci_masked) { slot = ffs(ci_masked) - 1; ccb = &ap->ap_ccbs[slot]; ci_masked &= ~(1 << slot); ccb->ccb_xa.state = ATA_S_ERROR; } /* Run completion for all active slots. */ ci_saved &= ~*active; /* Don't restart the port if our problems were deemed fatal. */ if (ap->ap_state == AP_S_FATAL_ERROR) need_restart = 0; } /* * CCB completion is detected by noticing its slot's bit in CI has * changed to zero some time after we activated it. * If we are polling, we may only be interested in particular slot(s). */ ci_masked = ~ci_saved & *active & ci_mask; while (ci_masked) { slot = ffs(ci_masked) - 1; ccb = &ap->ap_ccbs[slot]; ci_masked &= ~(1 << slot); DPRINTF(AHCI_D_INTR, "%s: slot %d is complete%s\n", PORTNAME(ap), slot, ccb->ccb_xa.state == ATA_S_ERROR ? " (error)" : ""); bus_dmamap_sync(sc->sc_dmat, AHCI_DMA_MAP(ap->ap_dmamem_cmd_list), ccb->ccb_slot * sizeof(struct ahci_cmd_hdr), sizeof(struct ahci_cmd_hdr), BUS_DMASYNC_POSTWRITE); bus_dmamap_sync(sc->sc_dmat, AHCI_DMA_MAP(ap->ap_dmamem_cmd_table), ccb->ccb_slot * sizeof(struct ahci_cmd_table), sizeof(struct ahci_cmd_table), BUS_DMASYNC_POSTWRITE); bus_dmamap_sync(sc->sc_dmat, AHCI_DMA_MAP(ap->ap_dmamem_rfis), 0, sizeof(struct ahci_rfis), BUS_DMASYNC_POSTREAD); *active &= ~(1 << ccb->ccb_slot); /* Copy the rfis into the ccb if we were asked for it */ if (ccb->ccb_xa.state == ATA_S_ONCHIP && ccb->ccb_xa.flags & ATA_F_GET_RFIS) { memcpy(&ccb->ccb_xa.rfis, ap->ap_rfis->rfis, sizeof(struct ata_fis_d2h)); } ccb->ccb_done(ccb); processed |= 1 << ccb->ccb_slot; } if (need_restart) { /* Restart command DMA on the port */ ahci_port_start(ap, 0); /* Re-enable outstanding commands on port. */ if (ci_saved) { #ifdef DIAGNOSTIC tmp = ci_saved; while (tmp) { slot = ffs(tmp) - 1; tmp &= ~(1 << slot); ccb = &ap->ap_ccbs[slot]; KASSERT(ccb->ccb_xa.state == ATA_S_ONCHIP); KASSERT((!!(ccb->ccb_xa.flags & ATA_F_NCQ)) == (!!ap->ap_sactive)); } #endif DPRINTF(AHCI_D_VERBOSE, "%s: ahci_port_intr " "re-enabling%s slots %08x\n", PORTNAME(ap), ap->ap_sactive ? " NCQ" : "", ci_saved); /* XXX FBS: * - need to set AHCI_PREG_FBS_DEV for each command * - can't do multiple commands with a single write to * AHCI_PREG_CI */ if (ap->ap_sactive) ahci_pwrite(ap, AHCI_PREG_SACT, ci_saved); ahci_pwrite(ap, AHCI_PREG_CI, ci_saved); } } return (processed); } struct ahci_ccb * ahci_get_ccb(struct ahci_port *ap) { struct ahci_ccb *ccb; mtx_enter(&ap->ap_ccb_mtx); ccb = TAILQ_FIRST(&ap->ap_ccb_free); if (ccb != NULL) { KASSERT(ccb->ccb_xa.state == ATA_S_PUT); TAILQ_REMOVE(&ap->ap_ccb_free, ccb, ccb_entry); ccb->ccb_xa.state = ATA_S_SETUP; } mtx_leave(&ap->ap_ccb_mtx); return (ccb); } void ahci_put_ccb(struct ahci_ccb *ccb) { struct ahci_port *ap = ccb->ccb_port; #ifdef DIAGNOSTIC if (ccb->ccb_xa.state != ATA_S_COMPLETE && ccb->ccb_xa.state != ATA_S_TIMEOUT && ccb->ccb_xa.state != ATA_S_ERROR) { printf("%s: invalid ata_xfer state %02x in ahci_put_ccb, " "slot %d\n", PORTNAME(ccb->ccb_port), ccb->ccb_xa.state, ccb->ccb_slot); } #endif ccb->ccb_xa.state = ATA_S_PUT; mtx_enter(&ap->ap_ccb_mtx); TAILQ_INSERT_TAIL(&ap->ap_ccb_free, ccb, ccb_entry); mtx_leave(&ap->ap_ccb_mtx); } struct ahci_ccb * ahci_get_err_ccb(struct ahci_port *ap) { struct ahci_ccb *err_ccb; u_int32_t sact; splassert(IPL_BIO); /* No commands may be active on the chip. */ sact = ahci_pread(ap, AHCI_PREG_SACT); if (sact != 0) printf("ahci_get_err_ccb but SACT %08x != 0?\n", sact); KASSERT(ahci_pread(ap, AHCI_PREG_CI) == 0); #ifdef DIAGNOSTIC KASSERT(ap->ap_err_busy == 0); ap->ap_err_busy = 1; #endif /* Save outstanding command state. */ ap->ap_err_saved_active = ap->ap_active; ap->ap_err_saved_active_cnt = ap->ap_active_cnt; ap->ap_err_saved_sactive = ap->ap_sactive; /* * Pretend we have no commands outstanding, so that completions won't * run prematurely. */ ap->ap_active = ap->ap_active_cnt = ap->ap_sactive = 0; /* * Grab a CCB to use for error recovery. This should never fail, as * we ask atascsi to reserve one for us at init time. */ err_ccb = ap->ap_ccb_err; err_ccb->ccb_xa.flags = 0; err_ccb->ccb_xa.state = ATA_S_SETUP; err_ccb->ccb_done = ahci_empty_done; return (err_ccb); } void ahci_put_err_ccb(struct ahci_ccb *ccb) { struct ahci_port *ap = ccb->ccb_port; u_int32_t sact; splassert(IPL_BIO); #ifdef DIAGNOSTIC KASSERT(ap->ap_err_busy); #endif /* No commands may be active on the chip */ sact = ahci_pread(ap, AHCI_PREG_SACT); if (sact != 0) printf("ahci_port_err_ccb_restore but SACT %08x != 0?\n", sact); KASSERT(ahci_pread(ap, AHCI_PREG_CI) == 0); #ifdef DIAGNOSTIC /* Done with the CCB */ KASSERT(ccb == ap->ap_ccb_err); #endif /* Restore outstanding command state */ ap->ap_sactive = ap->ap_err_saved_sactive; ap->ap_active_cnt = ap->ap_err_saved_active_cnt; ap->ap_active = ap->ap_err_saved_active; #ifdef DIAGNOSTIC ap->ap_err_busy = 0; #endif } struct ahci_ccb * ahci_get_pmp_ccb(struct ahci_port *ap) { struct ahci_ccb *ccb; u_int32_t sact; /* some PMP commands need to be issued on slot 1, * particularly the command that clears SRST and * fetches the device signature. * * ensure the chip is idle and ccb 1 is available. */ splassert(IPL_BIO); sact = ahci_pread(ap, AHCI_PREG_SACT); if (sact != 0) printf("ahci_get_pmp_ccb; SACT %08x != 0\n", sact); KASSERT(ahci_pread(ap, AHCI_PREG_CI) == 0); ccb = &ap->ap_ccbs[1]; KASSERT(ccb->ccb_xa.state == ATA_S_PUT); ccb->ccb_xa.flags = 0; ccb->ccb_done = ahci_pmp_cmd_done; mtx_enter(&ap->ap_ccb_mtx); TAILQ_REMOVE(&ap->ap_ccb_free, ccb, ccb_entry); mtx_leave(&ap->ap_ccb_mtx); return ccb; } void ahci_put_pmp_ccb(struct ahci_ccb *ccb) { struct ahci_port *ap = ccb->ccb_port; u_int32_t sact; /* make sure this is the right ccb */ KASSERT(ccb == &ap->ap_ccbs[1]); /* No commands may be active on the chip */ sact = ahci_pread(ap, AHCI_PREG_SACT); if (sact != 0) printf("ahci_port_err_ccb_restore but SACT %08x != 0?\n", sact); KASSERT(ahci_pread(ap, AHCI_PREG_CI) == 0); ccb->ccb_xa.state = ATA_S_PUT; mtx_enter(&ap->ap_ccb_mtx); TAILQ_INSERT_TAIL(&ap->ap_ccb_free, ccb, ccb_entry); mtx_leave(&ap->ap_ccb_mtx); } int ahci_port_read_ncq_error(struct ahci_port *ap, int *err_slotp, int pmp_port) { struct ahci_ccb *ccb; struct ahci_cmd_hdr *cmd_slot; u_int32_t cmd; struct ata_fis_h2d *fis; int rc = EIO, oldstate; DPRINTF(AHCI_D_VERBOSE, "%s: read log page\n", PORTNAME(ap)); oldstate = ap->ap_state; ap->ap_state = AP_S_ERROR_RECOVERY; /* Save command register state. */ cmd = ahci_pread(ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; /* Port should have been idled already. Start it. */ KASSERT((cmd & AHCI_PREG_CMD_CR) == 0); ahci_port_start(ap, 0); /* Prep error CCB for READ LOG EXT, page 10h, 1 sector. */ ccb = ahci_get_err_ccb(ap); ccb->ccb_xa.flags = ATA_F_NOWAIT | ATA_F_READ | ATA_F_POLL; ccb->ccb_xa.data = ap->ap_err_scratch; ccb->ccb_xa.datalen = 512; cmd_slot = ccb->ccb_cmd_hdr; memset(ccb->ccb_cmd_table, 0, sizeof(struct ahci_cmd_table)); fis = (struct ata_fis_h2d *)ccb->ccb_cmd_table->cfis; fis->type = ATA_FIS_TYPE_H2D; fis->flags = ATA_H2D_FLAGS_CMD | pmp_port; fis->command = ATA_C_READ_LOG_EXT; fis->lba_low = 0x10; /* queued error log page (10h) */ fis->sector_count = 1; /* number of sectors (1) */ fis->sector_count_exp = 0; fis->lba_mid = 0; /* starting offset */ fis->lba_mid_exp = 0; fis->device = 0; htolem16(&cmd_slot->flags, 5 /* FIS length: 5 DWORDS */ | (pmp_port << AHCI_CMD_LIST_FLAG_PMP_SHIFT)); if (ahci_load_prdt(ccb) != 0) { rc = ENOMEM; /* XXX caller must abort all commands */ goto err; } ccb->ccb_xa.state = ATA_S_PENDING; if (ahci_poll(ccb, 1000, NULL) != 0 || ccb->ccb_xa.state == ATA_S_ERROR) goto err; rc = 0; err: /* Abort our command, if it failed, by stopping command DMA. */ if (rc != 0 && ISSET(ap->ap_active, 1 << ccb->ccb_slot)) { printf("%s: log page read failed, slot %d was still active.\n", PORTNAME(ap), ccb->ccb_slot); ahci_port_stop(ap, 0); } /* Done with the error CCB now. */ ahci_unload_prdt(ccb); ahci_put_err_ccb(ccb); /* Extract failed register set and tags from the scratch space. */ if (rc == 0) { struct ata_log_page_10h *log; int err_slot; log = (struct ata_log_page_10h *)ap->ap_err_scratch; if (ISSET(log->err_regs.type, ATA_LOG_10H_TYPE_NOTQUEUED)) { /* Not queued bit was set - wasn't an NCQ error? */ printf("%s: read NCQ error page, but not an NCQ " "error?\n", PORTNAME(ap)); rc = ESRCH; } else { /* Copy back the log record as a D2H register FIS. */ *err_slotp = err_slot = log->err_regs.type & ATA_LOG_10H_TYPE_TAG_MASK; ccb = &ap->ap_ccbs[err_slot]; memcpy(&ccb->ccb_xa.rfis, &log->err_regs, sizeof(struct ata_fis_d2h)); ccb->ccb_xa.rfis.type = ATA_FIS_TYPE_D2H; ccb->ccb_xa.rfis.flags = 0; } } /* Restore saved CMD register state */ ahci_pwrite(ap, AHCI_PREG_CMD, cmd); ap->ap_state = oldstate; return (rc); } struct ahci_dmamem * ahci_dmamem_alloc(struct ahci_softc *sc, size_t size) { struct ahci_dmamem *adm; int nsegs; adm = malloc(sizeof(*adm), M_DEVBUF, M_NOWAIT | M_ZERO); if (adm == NULL) return (NULL); adm->adm_size = size; if (bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &adm->adm_map) != 0) goto admfree; if (bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &adm->adm_seg, 1, &nsegs, BUS_DMA_NOWAIT | BUS_DMA_ZERO) != 0) goto destroy; if (bus_dmamem_map(sc->sc_dmat, &adm->adm_seg, nsegs, size, &adm->adm_kva, BUS_DMA_NOWAIT | BUS_DMA_COHERENT) != 0) goto free; if (bus_dmamap_load(sc->sc_dmat, adm->adm_map, adm->adm_kva, size, NULL, BUS_DMA_NOWAIT) != 0) goto unmap; return (adm); unmap: bus_dmamem_unmap(sc->sc_dmat, adm->adm_kva, size); free: bus_dmamem_free(sc->sc_dmat, &adm->adm_seg, 1); destroy: bus_dmamap_destroy(sc->sc_dmat, adm->adm_map); admfree: free(adm, M_DEVBUF, sizeof(*adm)); return (NULL); } void ahci_dmamem_free(struct ahci_softc *sc, struct ahci_dmamem *adm) { bus_dmamap_unload(sc->sc_dmat, adm->adm_map); bus_dmamem_unmap(sc->sc_dmat, adm->adm_kva, adm->adm_size); bus_dmamem_free(sc->sc_dmat, &adm->adm_seg, 1); bus_dmamap_destroy(sc->sc_dmat, adm->adm_map); free(adm, M_DEVBUF, sizeof(*adm)); } u_int32_t ahci_read(struct ahci_softc *sc, bus_size_t r) { bus_space_barrier(sc->sc_iot, sc->sc_ioh, r, 4, BUS_SPACE_BARRIER_READ); return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, r)); } void ahci_write(struct ahci_softc *sc, bus_size_t r, u_int32_t v) { bus_space_write_4(sc->sc_iot, sc->sc_ioh, r, v); bus_space_barrier(sc->sc_iot, sc->sc_ioh, r, 4, BUS_SPACE_BARRIER_WRITE); } int ahci_wait_ne(struct ahci_softc *sc, bus_size_t r, u_int32_t mask, u_int32_t target) { int i; for (i = 0; i < 1000; i++) { if ((ahci_read(sc, r) & mask) != target) return (0); delay(1000); } return (1); } u_int32_t ahci_pread(struct ahci_port *ap, bus_size_t r) { bus_space_barrier(ap->ap_sc->sc_iot, ap->ap_ioh, r, 4, BUS_SPACE_BARRIER_READ); return (bus_space_read_4(ap->ap_sc->sc_iot, ap->ap_ioh, r)); } void ahci_pwrite(struct ahci_port *ap, bus_size_t r, u_int32_t v) { bus_space_write_4(ap->ap_sc->sc_iot, ap->ap_ioh, r, v); bus_space_barrier(ap->ap_sc->sc_iot, ap->ap_ioh, r, 4, BUS_SPACE_BARRIER_WRITE); } int ahci_pwait_eq(struct ahci_port *ap, bus_size_t r, u_int32_t mask, u_int32_t target, int n) { int i; for (i = 0; i < n * 1000; i++) { if ((ahci_pread(ap, r) & mask) == target) return (0); delay(1000); } return (1); } int ahci_ata_probe(void *xsc, int port, int lun) { struct ahci_softc *sc = xsc; struct ahci_port *ap = sc->sc_ports[port]; if (ap == NULL) return (ATA_PORT_T_NONE); if (lun != 0) { int pmp_port = lun - 1; if (pmp_port >= ap->ap_pmp_ports) { return (ATA_PORT_T_NONE); } return (ahci_pmp_port_probe(ap, pmp_port)); } else { return (ahci_port_signature(ap)); } } void ahci_ata_free(void *xsc, int port, int lun) { } struct ata_xfer * ahci_ata_get_xfer(void *aaa_cookie, int port) { struct ahci_softc *sc = aaa_cookie; struct ahci_port *ap = sc->sc_ports[port]; struct ahci_ccb *ccb; ccb = ahci_get_ccb(ap); if (ccb == NULL) { DPRINTF(AHCI_D_XFER, "%s: ahci_ata_get_xfer: NULL ccb\n", PORTNAME(ap)); return (NULL); } DPRINTF(AHCI_D_XFER, "%s: ahci_ata_get_xfer got slot %d\n", PORTNAME(ap), ccb->ccb_slot); return ((struct ata_xfer *)ccb); } void ahci_ata_put_xfer(struct ata_xfer *xa) { struct ahci_ccb *ccb = (struct ahci_ccb *)xa; DPRINTF(AHCI_D_XFER, "ahci_ata_put_xfer slot %d\n", ccb->ccb_slot); ahci_put_ccb(ccb); } void ahci_ata_cmd(struct ata_xfer *xa) { struct ahci_ccb *ccb = (struct ahci_ccb *)xa; struct ahci_cmd_hdr *cmd_slot; int s; u_int16_t flags; if (ccb->ccb_port->ap_state == AP_S_FATAL_ERROR) goto failcmd; ccb->ccb_done = ahci_ata_cmd_done; cmd_slot = ccb->ccb_cmd_hdr; flags = 5 /* FIS length (in DWORDs) */; flags |= xa->pmp_port << AHCI_CMD_LIST_FLAG_PMP_SHIFT; if (xa->flags & ATA_F_WRITE) flags |= AHCI_CMD_LIST_FLAG_W; if (xa->flags & ATA_F_PACKET) flags |= AHCI_CMD_LIST_FLAG_A; htolem16(&cmd_slot->flags, flags); if (ahci_load_prdt(ccb) != 0) goto failcmd; timeout_set(&xa->stimeout, ahci_ata_cmd_timeout, ccb); xa->state = ATA_S_PENDING; if (xa->flags & ATA_F_POLL) ahci_poll(ccb, xa->timeout, ahci_ata_cmd_timeout); else { s = splbio(); timeout_add_msec(&xa->stimeout, xa->timeout); ahci_start(ccb); splx(s); } return; failcmd: s = splbio(); xa->state = ATA_S_ERROR; ata_complete(xa); splx(s); } void ahci_pmp_cmd_done(struct ahci_ccb *ccb) { struct ata_xfer *xa = &ccb->ccb_xa; if (xa->state == ATA_S_ONCHIP || xa->state == ATA_S_ERROR) ahci_issue_pending_commands(ccb->ccb_port, xa->flags & ATA_F_NCQ); xa->state = ATA_S_COMPLETE; } void ahci_ata_cmd_done(struct ahci_ccb *ccb) { struct ata_xfer *xa = &ccb->ccb_xa; timeout_del(&xa->stimeout); if (xa->state == ATA_S_ONCHIP || xa->state == ATA_S_ERROR) ahci_issue_pending_commands(ccb->ccb_port, xa->flags & ATA_F_NCQ); ahci_unload_prdt(ccb); if (xa->state == ATA_S_ONCHIP) xa->state = ATA_S_COMPLETE; #ifdef DIAGNOSTIC else if (xa->state != ATA_S_ERROR && xa->state != ATA_S_TIMEOUT) printf("%s: invalid ata_xfer state %02x in ahci_ata_cmd_done, " "slot %d\n", PORTNAME(ccb->ccb_port), xa->state, ccb->ccb_slot); #endif if (xa->state != ATA_S_TIMEOUT) ata_complete(xa); } void ahci_ata_cmd_timeout(void *arg) { struct ahci_ccb *ccb = arg; struct ata_xfer *xa = &ccb->ccb_xa; struct ahci_port *ap = ccb->ccb_port; int s, ccb_was_started, ncq_cmd; volatile u_int32_t *active; s = splbio(); ncq_cmd = (xa->flags & ATA_F_NCQ); active = ncq_cmd ? &ap->ap_sactive : &ap->ap_active; if (ccb->ccb_xa.state == ATA_S_PENDING) { DPRINTF(AHCI_D_TIMEOUT, "%s: command for slot %d timed out " "before it got on chip\n", PORTNAME(ap), ccb->ccb_slot); TAILQ_REMOVE(&ap->ap_ccb_pending, ccb, ccb_entry); ccb_was_started = 0; } else if (ccb->ccb_xa.state == ATA_S_ONCHIP && ahci_port_intr(ap, 1 << ccb->ccb_slot)) { DPRINTF(AHCI_D_TIMEOUT, "%s: final poll of port completed " "command in slot %d\n", PORTNAME(ap), ccb->ccb_slot); goto ret; } else if (ccb->ccb_xa.state != ATA_S_ONCHIP) { DPRINTF(AHCI_D_TIMEOUT, "%s: command slot %d already " "handled%s\n", PORTNAME(ap), ccb->ccb_slot, ISSET(*active, 1 << ccb->ccb_slot) ? " but slot is still active?" : "."); goto ret; } else if (!ISSET(ahci_pread(ap, ncq_cmd ? AHCI_PREG_SACT : AHCI_PREG_CI), 1 << ccb->ccb_slot) && ISSET(*active, 1 << ccb->ccb_slot)) { DPRINTF(AHCI_D_TIMEOUT, "%s: command slot %d completed but " "IRQ handler didn't detect it. Why?\n", PORTNAME(ap), ccb->ccb_slot); *active &= ~(1 << ccb->ccb_slot); ccb->ccb_done(ccb); goto ret; } else { ccb_was_started = 1; } /* Complete the slot with a timeout error. */ ccb->ccb_xa.state = ATA_S_TIMEOUT; *active &= ~(1 << ccb->ccb_slot); DPRINTF(AHCI_D_TIMEOUT, "%s: run completion (1)\n", PORTNAME(ap)); ccb->ccb_done(ccb); /* This won't issue pending commands or run the atascsi completion. */ /* Reset port to abort running command. */ if (ccb_was_started) { DPRINTF(AHCI_D_TIMEOUT, "%s: resetting port to abort%s command " "in slot %d, pmp port %d, active %08x\n", PORTNAME(ap), ncq_cmd ? " NCQ" : "", ccb->ccb_slot, xa->pmp_port, *active); if (ahci_port_softreset(ap) != 0 && ahci_port_portreset(ap, 0) != 0) { printf("%s: failed to reset port during timeout " "handling, disabling it\n", PORTNAME(ap)); ap->ap_state = AP_S_FATAL_ERROR; } /* Restart any other commands that were aborted by the reset. */ if (*active) { DPRINTF(AHCI_D_TIMEOUT, "%s: re-enabling%s slots " "%08x\n", PORTNAME(ap), ncq_cmd ? " NCQ" : "", *active); if (ncq_cmd) ahci_pwrite(ap, AHCI_PREG_SACT, *active); ahci_pwrite(ap, AHCI_PREG_CI, *active); } } /* Issue any pending commands now. */ DPRINTF(AHCI_D_TIMEOUT, "%s: issue pending\n", PORTNAME(ap)); if (ccb_was_started) ahci_issue_pending_commands(ap, ncq_cmd); else if (ap->ap_active == 0) ahci_issue_pending_ncq_commands(ap); /* Complete the timed out ata_xfer I/O (may generate new I/O). */ DPRINTF(AHCI_D_TIMEOUT, "%s: run completion (2)\n", PORTNAME(ap)); ata_complete(xa); DPRINTF(AHCI_D_TIMEOUT, "%s: splx\n", PORTNAME(ap)); ret: splx(s); } void ahci_empty_done(struct ahci_ccb *ccb) { if (ccb->ccb_xa.state != ATA_S_ERROR) ccb->ccb_xa.state = ATA_S_COMPLETE; } int ahci_pmp_read(struct ahci_port *ap, int target, int which, u_int32_t *datap) { struct ahci_ccb *ccb; struct ata_fis_h2d *fis; int error; ccb = ahci_get_pmp_ccb(ap); if (ccb == NULL) { printf("%s: NULL ccb!\n", PORTNAME(ap)); return (1); } ccb->ccb_xa.flags = ATA_F_POLL | ATA_F_GET_RFIS; ccb->ccb_xa.pmp_port = SATA_PMP_CONTROL_PORT; ccb->ccb_xa.state = ATA_S_PENDING; memset(ccb->ccb_cmd_table, 0, sizeof(struct ahci_cmd_table)); fis = (struct ata_fis_h2d *)ccb->ccb_cmd_table->cfis; fis->type = ATA_FIS_TYPE_H2D; fis->flags = ATA_H2D_FLAGS_CMD | SATA_PMP_CONTROL_PORT; fis->command = ATA_C_READ_PM; fis->features = which; fis->device = target | ATA_H2D_DEVICE_LBA; fis->control = ATA_FIS_CONTROL_4BIT; if (ahci_poll(ccb, 1000, ahci_pmp_probe_timeout) != 0) { error = 1; } else { *datap = ccb->ccb_xa.rfis.sector_count | (ccb->ccb_xa.rfis.lba_low << 8) | (ccb->ccb_xa.rfis.lba_mid << 16) | (ccb->ccb_xa.rfis.lba_high << 24); error = 0; } ahci_put_pmp_ccb(ccb); return (error); } int ahci_pmp_write(struct ahci_port *ap, int target, int which, u_int32_t data) { struct ahci_ccb *ccb; struct ata_fis_h2d *fis; int error; ccb = ahci_get_pmp_ccb(ap); if (ccb == NULL) { printf("%s: NULL ccb!\n", PORTNAME(ap)); return (1); } ccb->ccb_xa.flags = ATA_F_POLL; ccb->ccb_xa.pmp_port = SATA_PMP_CONTROL_PORT; ccb->ccb_xa.state = ATA_S_PENDING; memset(ccb->ccb_cmd_table, 0, sizeof(struct ahci_cmd_table)); fis = (struct ata_fis_h2d *)ccb->ccb_cmd_table->cfis; fis->type = ATA_FIS_TYPE_H2D; fis->flags = ATA_H2D_FLAGS_CMD | SATA_PMP_CONTROL_PORT; fis->command = ATA_C_WRITE_PM; fis->features = which; fis->device = target | ATA_H2D_DEVICE_LBA; fis->sector_count = (u_int8_t)data; fis->lba_low = (u_int8_t)(data >> 8); fis->lba_mid = (u_int8_t)(data >> 16); fis->lba_high = (u_int8_t)(data >> 24); fis->control = ATA_FIS_CONTROL_4BIT; error = ahci_poll(ccb, 1000, ahci_pmp_probe_timeout); ahci_put_pmp_ccb(ccb); return (error); } int ahci_pmp_phy_status(struct ahci_port *ap, int target, u_int32_t *datap) { int error; error = ahci_pmp_read(ap, target, SATA_PMREG_SSTS, datap); if (error == 0) error = ahci_pmp_write(ap, target, SATA_PMREG_SERR, -1); if (error) *datap = 0; return (error); } int ahci_pmp_identify(struct ahci_port *ap, int *ret_nports) { u_int32_t chipid; u_int32_t rev; u_int32_t nports; u_int32_t features; u_int32_t enabled; int s; s = splbio(); if (ahci_pmp_read(ap, 15, 0, &chipid) || ahci_pmp_read(ap, 15, 1, &rev) || ahci_pmp_read(ap, 15, 2, &nports) || ahci_pmp_read(ap, 15, SATA_PMREG_FEA, &features) || ahci_pmp_read(ap, 15, SATA_PMREG_FEAEN, &enabled)) { printf("%s: port multiplier identification failed\n", PORTNAME(ap)); splx(s); return (1); } splx(s); nports &= 0x0F; /* ignore SEMB port on SiI3726 port multiplier chips */ if (chipid == 0x37261095) { nports--; } printf("%s: port multiplier found: chip=%08x rev=0x%b nports=%d, " "features: 0x%b, enabled: 0x%b\n", PORTNAME(ap), chipid, rev, SATA_PFMT_PM_REV, nports, features, SATA_PFMT_PM_FEA, enabled, SATA_PFMT_PM_FEA); *ret_nports = nports; return (0); } #ifdef HIBERNATE void ahci_hibernate_io_start(struct ahci_port *ap, struct ahci_ccb *ccb) { ccb->ccb_cmd_hdr->prdbc = 0; ahci_pwrite(ap, AHCI_PREG_CI, 1 << ccb->ccb_slot); } int ahci_hibernate_io_poll(struct ahci_port *ap, struct ahci_ccb *ccb) { u_int32_t is, ci_saved; int process_error = 0; is = ahci_pread(ap, AHCI_PREG_IS); ci_saved = ahci_pread(ap, AHCI_PREG_CI); if (is & AHCI_PREG_IS_DHRS) { u_int32_t tfd; u_int32_t cmd; u_int32_t serr; tfd = ahci_pread(ap, AHCI_PREG_TFD); cmd = ahci_pread(ap, AHCI_PREG_CMD); serr = ahci_pread(ap, AHCI_PREG_SERR); if ((tfd & AHCI_PREG_TFD_STS_ERR) && (cmd & AHCI_PREG_CMD_CR) == 0) { process_error = 1; } else { ahci_pwrite(ap, AHCI_PREG_IS, AHCI_PREG_IS_DHRS); } } else if (is & (AHCI_PREG_IS_TFES | AHCI_PREG_IS_HBFS | AHCI_PREG_IS_IFS | AHCI_PREG_IS_OFS | AHCI_PREG_IS_UFS)) { process_error = 1; } /* Command failed. See AHCI 1.1 spec 6.2.2.1 and 6.2.2.2. */ if (process_error) { /* Turn off ST to clear CI and SACT. */ ahci_port_stop(ap, 0); /* just return an error indicator? we can't meaningfully * recover, and on the way back out we'll DVACT_RESUME which * resets and reinits the port. */ return (EIO); } /* command is finished when the bit in CI for the slot goes to 0 */ if (ci_saved & (1 << ccb->ccb_slot)) { return (EAGAIN); } return (0); } void ahci_hibernate_load_prdt(struct ahci_ccb *ccb) { struct ata_xfer *xa = &ccb->ccb_xa; struct ahci_prdt *prdt = ccb->ccb_cmd_table->prdt, *prd; struct ahci_cmd_hdr *cmd_slot = ccb->ccb_cmd_hdr; int i; paddr_t data_phys; u_int64_t data_bus_phys; vaddr_t data_addr; size_t seglen; size_t buflen; if (xa->datalen == 0) { ccb->ccb_cmd_hdr->prdtl = 0; return; } /* derived from i386/amd64 _bus_dma_load_buffer; * for amd64 the buffer will always be dma safe. */ buflen = xa->datalen; data_addr = (vaddr_t)xa->data; for (i = 0; buflen > 0; i++) { prd = &prdt[i]; pmap_extract(pmap_kernel(), data_addr, &data_phys); data_bus_phys = data_phys; seglen = PAGE_SIZE - ((u_long)data_addr & PGOFSET); if (buflen < seglen) seglen = buflen; ahci_load_prdt_seg(&prdt[i], data_bus_phys, seglen, 0); data_addr += seglen; buflen -= seglen; } htolem16(&cmd_slot->prdtl, i); } int ahci_hibernate_io(dev_t dev, daddr_t blkno, vaddr_t addr, size_t size, int op, void *page) { /* we use the 'real' ahci_port and ahci_softc here, but * never write to them */ struct { struct ahci_cmd_hdr cmd_hdr[32]; /* page aligned, 1024 bytes */ struct ahci_rfis rfis; /* 1k aligned, 256 bytes */ /* cmd table isn't actually used because of mysteries */ struct ahci_cmd_table cmd_table; /* 256 aligned, 512 bytes */ struct ahci_port *ap; struct ahci_ccb ccb_buf; struct ahci_ccb *ccb; struct ahci_cmd_hdr *hdr_buf; int pmp_port; daddr_t poffset; size_t psize; } *my = page; struct ata_fis_h2d *fis; u_int32_t sector_count; struct ahci_cmd_hdr *cmd_slot; int rc; int timeout; u_int16_t flags; if (op == HIB_INIT) { struct device *disk; struct device *scsibus; struct ahci_softc *sc; extern struct cfdriver sd_cd; struct scsi_link *link; struct scsibus_softc *bus_sc; int port; paddr_t page_phys; u_int64_t item_phys; u_int32_t cmd; my->poffset = blkno; my->psize = size; /* map dev to an ahci port */ disk = disk_lookup(&sd_cd, DISKUNIT(dev)); scsibus = disk->dv_parent; sc = (struct ahci_softc *)disk->dv_parent->dv_parent; /* find the scsi_link for the device, which has the port */ port = -1; bus_sc = (struct scsibus_softc *)scsibus; SLIST_FOREACH(link, &bus_sc->sc_link_list, bus_list) { if (link->device_softc == disk) { /* link->adapter_softc == sc->sc_atascsi */ port = link->target; if (link->lun > 0) my->pmp_port = link->lun - 1; else my->pmp_port = 0; break; } } if (port == -1) { /* don't know where the disk is */ return (EIO); } my->ap = sc->sc_ports[port]; /* we're going to use the first command slot, * so ensure it's not already in use */ if (my->ap->ap_ccbs[0].ccb_xa.state != ATA_S_PUT) { /* this shouldn't happen, we should be idle */ return (EIO); } /* stop the port so we can relocate to the hibernate page */ if (ahci_port_stop(my->ap, 1)) { return (EIO); } ahci_pwrite(my->ap, AHCI_PREG_SCTL, 0); pmap_extract(pmap_kernel(), (vaddr_t)page, &page_phys); /* Setup RFIS base address */ item_phys = page_phys + ((void *)&my->rfis - page); ahci_pwrite(my->ap, AHCI_PREG_FBU, (u_int32_t)(item_phys >> 32)); ahci_pwrite(my->ap, AHCI_PREG_FB, (u_int32_t)item_phys); /* Enable FIS reception and activate port. */ cmd = ahci_pread(my->ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; cmd |= AHCI_PREG_CMD_FRE | AHCI_PREG_CMD_POD | AHCI_PREG_CMD_SUD; ahci_pwrite(my->ap, AHCI_PREG_CMD, cmd | AHCI_PREG_CMD_ICC_ACTIVE); /* Check whether port activated. */ cmd = ahci_pread(my->ap, AHCI_PREG_CMD) & ~AHCI_PREG_CMD_ICC; if (!ISSET(cmd, AHCI_PREG_CMD_FRE)) { return (EIO); } /* Set up the single CCB */ my->ccb = &my->ccb_buf; my->ccb->ccb_slot = 0; my->ccb->ccb_port = my->ap; /* Setup command list base address */ item_phys = page_phys + ((void *)&my->cmd_hdr - page); ahci_pwrite(my->ap, AHCI_PREG_CLBU, (u_int32_t)(item_phys >> 32)); ahci_pwrite(my->ap, AHCI_PREG_CLB, (u_int32_t)item_phys); my->ccb->ccb_cmd_hdr = &my->cmd_hdr[0]; /* use existing cmd table - don't know why moving to a new one fails */ my->ccb->ccb_cmd_table = my->ap->ap_ccbs[0].ccb_cmd_table; pmap_extract(pmap_kernel(), (vaddr_t)AHCI_DMA_KVA(my->ap->ap_dmamem_cmd_table), &page_phys); item_phys = page_phys; #if 0 /* use cmd table in hibernate page (doesn't work) */ my->ccb->ccb_cmd_table = &my->cmd_table; item_phys = page_phys + ((void *)&my->cmd_table - page); #endif htolem64(&my->ccb->ccb_cmd_hdr->ctba, item_phys); my->ccb->ccb_xa.fis = (struct ata_fis_h2d *)my->ccb->ccb_cmd_table->cfis; my->ccb->ccb_xa.packetcmd = my->ccb->ccb_cmd_table->acmd; my->ccb->ccb_xa.tag = 0; /* Wait for ICC change to complete */ ahci_pwait_clr(my->ap, AHCI_PREG_CMD, AHCI_PREG_CMD_ICC, 1); if (ahci_port_start(my->ap, 0)) { return (EIO); } /* Flush interrupts for port */ ahci_pwrite(my->ap, AHCI_PREG_IS, ahci_pread(my->ap, AHCI_PREG_IS)); ahci_write(sc, AHCI_REG_IS, 1 << port); ahci_enable_interrupts(my->ap); return (0); } else if (op == HIB_DONE) { ahci_activate(&my->ap->ap_sc->sc_dev, DVACT_RESUME); return (0); } if (blkno > my->psize) return (E2BIG); blkno += my->poffset; /* build fis */ sector_count = size / 512; /* dlg promises this is okay */ my->ccb->ccb_xa.flags = op == HIB_W ? ATA_F_WRITE : ATA_F_READ; fis = my->ccb->ccb_xa.fis; fis->flags = ATA_H2D_FLAGS_CMD | my->pmp_port; fis->lba_low = blkno & 0xff; fis->lba_mid = (blkno >> 8) & 0xff; fis->lba_high = (blkno >> 16) & 0xff; if (sector_count > 0x100 || blkno > 0xfffffff) { /* Use LBA48 */ fis->command = op == HIB_W ? ATA_C_WRITEDMA_EXT : ATA_C_READDMA_EXT; fis->device = ATA_H2D_DEVICE_LBA; fis->lba_low_exp = (blkno >> 24) & 0xff; fis->lba_mid_exp = (blkno >> 32) & 0xff; fis->lba_high_exp = (blkno >> 40) & 0xff; fis->sector_count = sector_count & 0xff; fis->sector_count_exp = (sector_count >> 8) & 0xff; } else { /* Use LBA */ fis->command = op == HIB_W ? ATA_C_WRITEDMA : ATA_C_READDMA; fis->device = ATA_H2D_DEVICE_LBA | ((blkno >> 24) & 0x0f); fis->sector_count = sector_count & 0xff; } my->ccb->ccb_xa.data = (void *)addr; my->ccb->ccb_xa.datalen = size; my->ccb->ccb_xa.pmp_port = my->pmp_port; my->ccb->ccb_xa.flags |= ATA_F_POLL; cmd_slot = my->ccb->ccb_cmd_hdr; flags = 5; /* FIS length (in DWORDs) */ flags |= my->pmp_port << AHCI_CMD_LIST_FLAG_PMP_SHIFT; if (op == HIB_W) flags |= AHCI_CMD_LIST_FLAG_W; htolem16(&cmd_slot->flags, flags); ahci_hibernate_load_prdt(my->ccb); ahci_hibernate_io_start(my->ap, my->ccb); timeout = 1000; while ((rc = ahci_hibernate_io_poll(my->ap, my->ccb)) == EAGAIN) { delay(1000); timeout--; if (timeout == 0) { return (EIO); } } return (0); } #endif