/* $OpenBSD: ahci.c,v 1.39 2007/02/06 04:44:01 dlg Exp $ */ /* * Copyright (c) 2006 David Gwynne * * 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 #define AHCI_DEBUG #ifdef AHCI_DEBUG #define DPRINTF(m, f...) do { if (ahcidebug & (m)) printf(f); } while (0) #define AHCI_D_VERBOSE 0x01 int ahcidebug = AHCI_D_VERBOSE; #else #define DPRINTF(m, f...) #endif #define AHCI_PCI_BAR 0x24 #define AHCI_REG_CAP 0x000 /* HBA Capabilities */ #define AHCI_REG_CAP_NP(_r) (((_r) & 0x1f)+1) /* Number of Ports */ #define AHCI_REG_CAP_SXS (1<<5) /* External SATA */ #define AHCI_REG_CAP_EMS (1<<6) /* Enclosure Mgmt */ #define AHCI_REG_CAP_CCCS (1<<7) /* Cmd Coalescing */ #define AHCI_REG_CAP_NCS(_r) ((((_r) & 0x1f00)>>8)+1) /* NCmds*/ #define AHCI_REG_CAP_PSC (1<<13) /* Partial State Capable */ #define AHCI_REG_CAP_SSC (1<<14) /* Slumber State Capable */ #define AHCI_REG_CAP_PMD (1<<15) /* PIO Multiple DRQ Block */ #define AHCI_REG_CAP_FBSS (1<<16) /* FIS-Based Switching */ #define AHCI_REG_CAP_SPM (1<<17) /* Port Multiplier */ #define AHCI_REG_CAP_SAM (1<<18) /* AHCI Only mode */ #define AHCI_REG_CAP_SNZO (1<<19) /* Non Zero DMA Offsets */ #define AHCI_REG_CAP_ISS (0xf<<20) /* Interface Speed Support */ #define AHCI_REG_CAP_ISS_G1 (0x1<<20) /* Gen 1 (1.5 Gbps) */ #define AHCI_REG_CAP_ISS_G1_2 (0x2<<20) /* Gen 1 and 2 (3 Gbps) */ #define AHCI_REG_CAP_SCLO (1<<24) /* Cmd List Override */ #define AHCI_REG_CAP_SAL (1<<25) /* Activity LED */ #define AHCI_REG_CAP_SALP (1<<26) /* Aggresive Link Pwr Mgmt */ #define AHCI_REG_CAP_SSS (1<<27) /* Staggered Spinup */ #define AHCI_REG_CAP_SMPS (1<<28) /* Mech Presence Switch */ #define AHCI_REG_CAP_SSNTF (1<<29) /* SNotification Register */ #define AHCI_REG_CAP_SNCQ (1<<30) /* Native Cmd Queuing */ #define AHCI_REG_CAP_S64A (1<<31) /* 64bit Addressing */ #define AHCI_FMT_CAP "\020" "\006SXS" "\007EMS" "\010CCCS" \ "\016PSC" "\017SSC" "\020PMD" "\021FBSS" \ "\022SPM" "\023SAM" "\024SNZO" "\031SCLO" \ "\032SAL" "\033SALP" "\034SSS" "\035SMPS" \ "\036SSNTF" "\037NCQ" "\040S64A" #define AHCI_REG_GHC 0x004 /* Global HBA Control */ #define AHCI_REG_GHC_HR (1<<0) /* HBA Reset */ #define AHCI_REG_GHC_IE (1<<1) /* Interrupt Enable */ #define AHCI_REG_GHC_MRSM (1<<2) /* MSI Revert to Single Msg */ #define AHCI_REG_GHC_AE (1<<31) /* AHCI Enable */ #define AHCI_REG_IS 0x008 /* Interrupt Status */ #define AHCI_REG_PI 0x00c /* Ports Implemented */ #define AHCI_REG_VS 0x010 /* AHCI Version */ #define AHCI_REG_VS_0_95 0x00000905 /* 0.95 */ #define AHCI_REG_VS_1_0 0x00010000 /* 1.0 */ #define AHCI_REG_VS_1_1 0x00010100 /* 1.1 */ #define AHCI_REG_CCC_CTL 0x014 /* Coalescing Control */ #define AHCI_REG_CCC_PORTS 0x018 /* Coalescing Ports */ #define AHCI_REG_EM_LOC 0x01c /* Enclosure Mgmt Location */ #define AHCI_REG_EM_CTL 0x020 /* Enclosure Mgmt Control */ #define AHCI_PORT_REGION(_p) (0x100 + ((_p) * 0x80)) #define AHCI_PORT_SIZE 0x80 #define AHCI_PREG_CLB 0x00 /* Cmd List Base Addr */ #define AHCI_PREG_CLBU 0x04 /* Cmd List Base Hi Addr */ #define AHCI_PREG_FB 0x08 /* FIS Base Addr */ #define AHCI_PREG_FBU 0x0c /* FIS Base Hi Addr */ #define AHCI_PREG_IS 0x10 /* Interrupt Status */ #define AHCI_PREG_IS_DHRS (1<<0) /* Device to Host FIS */ #define AHCI_PREG_IS_PSS (1<<1) /* PIO Setup FIS */ #define AHCI_PREG_IS_DSS (1<<2) /* DMA Setup FIS */ #define AHCI_PREG_IS_SDBS (1<<3) /* Set Devince Bits FIS */ #define AHCI_PREG_IS_UFS (1<<4) /* Unknown FIS */ #define AHCI_PREG_IS_DPS (1<<5) /* Descriptor Processed */ #define AHCI_PREG_IS_PCS (1<<6) /* Port Change */ #define AHCI_PREG_IS_DMPS (1<<7) /* Device Mechanical Presence */ #define AHCI_PREG_IS_PRCS (1<<22) /* PhyRdy Change */ #define AHCI_PREG_IS_IPMS (1<<23) /* Incorrect Port Multiplier */ #define AHCI_PREG_IS_OFS (1<<24) /* Overflow */ #define AHCI_PREG_IS_INFS (1<<26) /* Interface Non-fatal Error */ #define AHCI_PREG_IS_IFS (1<<27) /* Interface Fatal Error */ #define AHCI_PREG_IS_HBDS (1<<28) /* Host Bus Data Error */ #define AHCI_PREG_IS_HBFS (1<<29) /* Host Bus Fatal Error */ #define AHCI_PREG_IS_TFES (1<<30) /* Task File Error */ #define AHCI_PREG_IS_CPDS (1<<31) /* Cold Presence Detect */ #define AHCI_PFMT_IS "\20" "\001DHRS" "\002PSS" "\003DSS" \ "\004SDBS" "\005UFS" "\006DPS" "\007PCS" \ "\010DMPS" "\027PRCS" "\030IPMS" \ "\031OFS" "\033INFS" "\034IFS" "\035HBDS" \ "\036HBFS" "\037TFES" "\040CPDS" #define AHCI_PREG_IE 0x14 /* Interrupt Enable */ #define AHCI_PREG_IE_DHRE (1<<0) /* Device to Host FIS */ #define AHCI_PREG_IE_PSE (1<<1) /* PIO Setup FIS */ #define AHCI_PREG_IE_DSE (1<<2) /* DMA Setup FIS */ #define AHCI_PREG_IE_SDBE (1<<3) /* Set Devince Bits FIS */ #define AHCI_PREG_IE_UFE (1<<4) /* Unknown FIS */ #define AHCI_PREG_IE_DPE (1<<5) /* Descriptor Processed */ #define AHCI_PREG_IE_PCE (1<<6) /* Port Change */ #define AHCI_PREG_IE_DMPE (1<<7) /* Device Mechanical Presence */ #define AHCI_PREG_IE_PRCE (1<<22) /* PhyRdy Change */ #define AHCI_PREG_IE_IPME (1<<23) /* Incorrect Port Multiplier */ #define AHCI_PREG_IE_OFE (1<<24) /* Overflow */ #define AHCI_PREG_IE_INFE (1<<26) /* Interface Non-fatal Error */ #define AHCI_PREG_IE_IFE (1<<27) /* Interface Fatal Error */ #define AHCI_PREG_IE_HBDE (1<<28) /* Host Bus Data Error */ #define AHCI_PREG_IE_HBFE (1<<29) /* Host Bus Fatal Error */ #define AHCI_PREG_IE_TFEE (1<<30) /* Task File Error */ #define AHCI_PREG_IE_CPDE (1<<31) /* Cold Presence Detect */ #define AHCI_PFMT_IE "\20" "\001DHRE" "\002PSE" "\003DSE" \ "\004SDBE" "\005UFE" "\006DPE" "\007PCE" \ "\010DMPE" "\027PRCE" "\030IPME" \ "\031OFE" "\033INFE" "\034IFE" "\035HBDE" \ "\036HBFE" "\037TFEE" "\040CPDE" #define AHCI_PREG_CMD 0x18 /* Command and Status */ #define AHCI_PREG_CMD_ST (1<<0) /* Start */ #define AHCI_PREG_CMD_SUD (1<<1) /* Spin Up Device */ #define AHCI_PREG_CMD_POD (1<<2) /* Power On Device */ #define AHCI_PREG_CMD_CLO (1<<3) /* Command List Override */ #define AHCI_PREG_CMD_FRE (1<<4) /* FIS Receive Enable */ #define AHCI_PREG_CMD_CCS 0x1f00 /* Current Command Slot */ #define AHCI_PREG_CMD_MPSS (1<<13) /* Mech Presence State */ #define AHCI_PREG_CMD_FR (1<<14) /* FIS Receive Running */ #define AHCI_PREG_CMD_CR (1<<15) /* Command List Running */ #define AHCI_PREG_CMD_CPS (1<<16) /* Cold Presence State */ #define AHCI_PREG_CMD_PMA (1<<17) /* Port Multiplier Attached */ #define AHCI_PREG_CMD_HPCP (1<<18) /* Hot Plug Capable */ #define AHCI_PREG_CMD_MPSP (1<<19) /* Mech Presence Switch */ #define AHCI_PREG_CMD_CPD (1<<20) /* Cold Presence Detection */ #define AHCI_PREG_CMD_ESP (1<<21) /* External SATA Port */ #define AHCI_PREG_CMD_ATAPI (1<<24) /* Device is ATAPI */ #define AHCI_PREG_CMD_DLAE (1<<25) /* Drv LED on ATAPI Enable */ #define AHCI_PREG_CMD_ALPE (1<<26) /* Aggro Pwr Mgmt Enable */ #define AHCI_PREG_CMD_ASP (1<<27) /* Aggro Slumber/Partial */ #define AHCI_PREG_CMD_ICC 0xf0000000 /* Interface Comm Ctrl */ #define AHCI_PREG_CMD_ICC_SLUMBER 0x60000000 #define AHCI_PREG_CMD_ICC_PARTIAL 0x20000000 #define AHCI_PREG_CMD_ICC_ACTIVE 0x10000000 #define AHCI_PREG_CMD_ICC_IDLE 0x00000000 #define AHCI_PFMT_CMD "\020" "\001ST" "\002SUD" "\003POD" \ "\004CLO" "\005FRE" "\016MPSS" "\017FR" \ "\020CR" "\021CPS" "\022PMA" "\023HPCP" \ "\024MPSP" "\025CPD" "\026ESP" \ "\031ATAPI" "\032DLAE" "\033ALPE" "\034ASP" #define AHCI_PREG_TFD 0x20 /* Task File Data*/ #define AHCI_PREG_TFD_STS 0xff #define AHCI_PREG_TFD_STS_ERR (1<<0) #define AHCI_PREG_TFD_STS_DRQ (1<<3) #define AHCI_PREG_TFD_STS_BSY (1<<7) #define AHCI_PREG_TFD_ERR 0xff00 #define AHCI_PFTM_TFD_STS "\20" "\001ERR" "\004DRQ" "\010BSY" #define AHCI_PREG_SIG 0x24 /* Signature */ #define AHCI_PREG_SSTS 0x28 /* SATA Status */ #define AHCI_PREG_SSTS_DET 0xf /* Device Detection */ #define AHCI_PREG_SSTS_DET_NONE 0x0 #define AHCI_PREG_SSTS_DET_DEV_NE 0x1 #define AHCI_PREG_SSTS_DET_DEV 0x3 #define AHCI_PREG_SSTS_DET_PHYOFFLINE 0x4 #define AHCI_PREG_SSTS_SPD 0xf0 /* Current Interface Speed */ #define AHCI_PREG_SSTS_SPD_NONE 0x00 #define AHCI_PREG_SSTS_SPD_GEN1 0x10 #define AHCI_PREG_SSTS_SPD_GEN2 0x20 #define AHCI_PREG_SSTS_IPM 0xf00 /* Interface Power Management */ #define AHCI_PREG_SSTS_IPM_NONE 0x000 #define AHCI_PREG_SSTS_IPM_ACTIVE 0x100 #define AHCI_PREG_SSTS_IPM_PARTIAL 0x200 #define AHCI_PREG_SSTS_IPM_SLUMBER 0x600 #define AHCI_PREG_SCTL 0x2c /* SATA Control */ #define AHCI_PREG_SCTL_DET 0xf /* Device Detection */ #define AHCI_PREG_SCTL_DET_NONE 0x0 #define AHCI_PREG_SCTL_DET_INIT 0x1 #define AHCI_PREG_SCTL_DET_DISABLE 0x4 #define AHCI_PREG_SCTL_SPD 0xf0 /* Speed Allowed */ #define AHCI_PREG_SCTL_SPD_ANY 0x00 #define AHCI_PREG_SCTL_SPD_GEN1 0x10 #define AHCI_PREG_SCTL_SPD_GEN2 0x20 #define AHCI_PREG_SCTL_IPM 0xf00 /* Interface Power Management */ #define AHCI_PREG_SCTL_IPM_NONE 0x000 #define AHCI_PREG_SCTL_IPM_NOPARTIAL 0x100 #define AHCI_PREG_SCTL_IPM_NOSLUMBER 0x200 #define AHCI_PREG_SCTL_IPM_DISABLED 0x300 #define AHCI_PREG_SERR 0x30 /* SATA Error */ #define AHCI_PREG_SERR_ERR(_r) ((_r) & 0xffff) #define AHCI_PREG_SERR_ERR_I (1<<0) /* Recovered Data Integrity */ #define AHCI_PREG_SERR_ERR_M (1<<1) /* Recovered Communications */ #define AHCI_PREG_SERR_ERR_T (1<<8) /* Transient Data Integrity */ #define AHCI_PREG_SERR_ERR_C (1<<9) /* Persistent Comm/Data */ #define AHCI_PREG_SERR_ERR_P (1<<10) /* Protocol */ #define AHCI_PREG_SERR_ERR_E (1<<11) /* Internal */ #define AHCI_PFMT_SERR_ERR "\020" "\001I" "\002M" "\011T" "\012C" \ "\013P" "\014E" #define AHCI_PREG_SERR_DIAG(_r) (((_r) >> 16) & 0xffff) #define AHCI_PREG_SERR_DIAG_N (1<<0) /* PhyRdy Change */ #define AHCI_PREG_SERR_DIAG_I (1<<1) /* Phy Internal Error */ #define AHCI_PREG_SERR_DIAG_W (1<<2) /* Comm Wake */ #define AHCI_PREG_SERR_DIAG_B (1<<3) /* 10B to 8B Decode Error */ #define AHCI_PREG_SERR_DIAG_D (1<<4) /* Disparity Error */ #define AHCI_PREG_SERR_DIAG_C (1<<5) /* CRC Error */ #define AHCI_PREG_SERR_DIAG_H (1<<6) /* Handshake Error */ #define AHCI_PREG_SERR_DIAG_S (1<<7) /* Link Sequence Error */ #define AHCI_PREG_SERR_DIAG_T (1<<8) /* Transport State Trans Err */ #define AHCI_PREG_SERR_DIAG_F (1<<9) /* Unknown FIS Type */ #define AHCI_PREG_SERR_DIAG_X (1<<10) /* Exchanged */ #define AHCI_PFMT_SERR_DIAG "\020" "\001N" "\002I" "\003W" "\004B" \ "\005D" "\006C" "\007H" "\010S" "\011T" \ "\012F" "\013X" #define AHCI_PREG_ACT 0x34 /* SATA Active */ #define AHCI_PREG_CI 0x38 /* Command Issue */ #define AHCI_PREG_SNTF 0x3c /* SNotification */ struct ahci_cmd_list { u_int16_t prdtl; /* sgl len */ u_int16_t flags; u_int32_t prdbc; /* datalen */ u_int32_t ctba_lo; u_int32_t ctba_hi; u_int32_t reserved[4]; } __packed; struct ahci_rfis { u_int8_t dsfis[28]; u_int8_t reserved1[4]; u_int8_t psfis[24]; u_int8_t reserved2[8]; u_int8_t rfis[24]; u_int8_t reserved3[4]; u_int8_t sdbfis[4]; u_int8_t ufis[64]; u_int8_t reserved4[96]; } __packed; struct ahci_cmd_table { u_int8_t cfis[64]; u_int8_t acmd[16]; u_int8_t reserved[48]; } __packed; struct ahci_prdt { u_int32_t dba_lo; u_int32_t dba_hi; u_int32_t reserved; u_int32_t flags; } __packed; /* this makes ahci_cmd 512 bytes, which is good for alignment */ #define AHCI_MAX_PRDT 24 struct ahci_cmd { struct ahci_cmd_table table; struct ahci_prdt prdt[AHCI_MAX_PRDT]; } __packed; #define AHCI_MAX_PORTS 32 static const struct pci_matchid ahci_devices[] = { { PCI_VENDOR_JMICRON, PCI_PRODUCT_JMICRON_JMB361 } }; int ahci_match(struct device *, void *, void *); void ahci_attach(struct device *, struct device *, void *); struct ahci_dmamem { bus_dmamap_t adm_map; bus_dma_segment_t adm_seg; size_t adm_size; caddr_t adm_kva; }; #define AHCI_DMA_MAP(_adm) ((_adm)->adm_map) #define AHCI_DMA_DVA(_adm) ((_adm)->adm_map->dm_segs[0].ds_addr) #define AHCI_DMA_KVA(_adm) ((void *)(_adm)->adm_kva) struct ahci_softc; struct ahci_ccb { int ccb_id; struct ahci_cmd *ccb_cmd; u_int64_t ccb_cmd_dva; bus_dmamap_t ccb_dmamap; TAILQ_ENTRY(ahci_ccb) ccb_entry; }; struct ahci_port { struct ahci_softc *ap_sc; bus_space_handle_t ap_ioh; struct ahci_dmamem *ap_dmamem; struct ahci_rfis *ap_rfis; struct ahci_cmd_list *ap_cmd_list; struct ahci_ccb *ap_ccbs; TAILQ_HEAD(, ahci_ccb) ap_ccb_free; }; struct ahci_softc { struct device sc_dev; void *sc_ih; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; bus_size_t sc_ios; bus_dma_tag_t sc_dmat; u_int sc_ncmds; struct ahci_port *sc_ports[AHCI_MAX_PORTS]; }; #define DEVNAME(_s) ((_s)->sc_dev.dv_xname) struct cfattach ahci_ca = { sizeof(struct ahci_softc), ahci_match, ahci_attach }; struct cfdriver ahci_cd = { NULL, "ahci", DV_DULL }; int ahci_intr(void *); int ahci_map_regs(struct ahci_softc *, struct pci_attach_args *); void ahci_unmap_regs(struct ahci_softc *, struct pci_attach_args *); int ahci_init(struct ahci_softc *); int ahci_map_intr(struct ahci_softc *, struct pci_attach_args *); void ahci_unmap_intr(struct ahci_softc *, struct pci_attach_args *); int ahci_port_alloc(struct ahci_softc *, u_int); void ahci_port_free(struct ahci_softc *, u_int); struct ahci_ccb *ahci_get_ccb(struct ahci_port *); void ahci_put_ccb(struct ahci_port *, struct ahci_ccb *); 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); 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_wait_eq(struct ahci_softc *, bus_size_t, u_int32_t, u_int32_t); int ahci_wait_ne(struct ahci_softc *, bus_size_t, u_int32_t, u_int32_t); int ahci_match(struct device *parent, void *match, void *aux) { return (pci_matchbyid((struct pci_attach_args *)aux, ahci_devices, sizeof(ahci_devices) / sizeof(ahci_devices[0]))); } void ahci_attach(struct device *parent, struct device *self, void *aux) { struct ahci_softc *sc = (struct ahci_softc *)self; struct pci_attach_args *pa = aux; u_int32_t reg; int i; if (ahci_map_regs(sc, pa) != 0) { /* error already printed by ahci_map_regs */ return; } if (ahci_init(sc) != 0) { /* error already printed by ahci_init */ goto unmap; } if (ahci_map_intr(sc, pa) != 0) { /* error already printed by ahci_map_intr */ goto unmap; } printf("\n"); sc->sc_dmat = pa->pa_dmat; reg = ahci_read(sc, AHCI_REG_CAP); sc->sc_ncmds = AHCI_REG_CAP_NCS(reg); #ifdef AHCI_DEBUG if (ahcidebug & AHCI_D_VERBOSE) { const char *gen; switch (reg & AHCI_REG_CAP_ISS) { case AHCI_REG_CAP_ISS_G1: gen = "1 (1.5Gbps)"; break; case AHCI_REG_CAP_ISS_G1_2: gen = "1 (1.5Gbps) and 2 (3Gbps)"; break; default: gen = "unknown"; break; } printf("%s: capabilities: 0x%b ports: %d ncmds: %d gen: %s\n", DEVNAME(sc), reg, AHCI_FMT_CAP, AHCI_REG_CAP_NP(reg), sc->sc_ncmds, gen); } #endif reg = ahci_read(sc, AHCI_REG_PI); DPRINTF(AHCI_D_VERBOSE, "%s: ports implemented: 0x%08x\n", DEVNAME(sc), reg); for (i = 0; i < AHCI_MAX_PORTS; i++) { if (!ISSET(reg, 1 << i)) { /* dont allocate stuff if the port isnt implemented */ continue; } if (ahci_port_alloc(sc, i) != 0) goto freeports; } return; freeports: for (i = 0; i < AHCI_MAX_PORTS; i++) { if (sc->sc_ports[i] != NULL) ahci_port_free(sc, i); } unmap: ahci_unmap_regs(sc, pa); } int ahci_map_regs(struct ahci_softc *sc, struct pci_attach_args *pa) { pcireg_t memtype; memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, AHCI_PCI_BAR); if (pci_mapreg_map(pa, AHCI_PCI_BAR, memtype, 0, &sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_ios, 0) != 0) { printf(": unable to map registers\n"); return (1); } return (0); } void ahci_unmap_regs(struct ahci_softc *sc, struct pci_attach_args *pa) { bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); sc->sc_ios = 0; } int ahci_map_intr(struct ahci_softc *sc, struct pci_attach_args *pa) { pci_intr_handle_t ih; const char *intrstr; if (pci_intr_map(pa, &ih) != 0) { printf(": unable to map interrupt\n"); return (1); } intrstr = pci_intr_string(pa->pa_pc, ih); sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, ahci_intr, sc, DEVNAME(sc)); if (sc->sc_ih == NULL) { printf(": unable to map interrupt%s%s\n", intrstr == NULL ? "" : " at ", intrstr == NULL ? "" : intrstr); return (1); } printf(": %s", intrstr); return (0); } void ahci_unmap_intr(struct ahci_softc *sc, struct pci_attach_args *pa) { pci_intr_disestablish(pa->pa_pc, sc->sc_ih); } int ahci_init(struct ahci_softc *sc) { u_int32_t reg; const char *revision; /* 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 */ ahci_write(sc, AHCI_REG_GHC, AHCI_REG_GHC_AE); /* 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; default: printf(": unsupported AHCI revision 0x%08x\n", reg); return (1); } /* clean interrupts */ reg = ahci_read(sc, AHCI_REG_IS); ahci_write(sc, AHCI_REG_IS, reg); printf(": AHCI %s", revision); return (0); } int ahci_port_alloc(struct ahci_softc *sc, u_int port) { struct ahci_port *ap; struct ahci_ccb *ccb; u_int8_t *kva; u_int64_t dva; int offset = 0; int i; ap = malloc(sizeof(struct ahci_port), M_DEVBUF, M_NOWAIT); if (ap == NULL) { printf("%s: unable to allocate memory for port %d\n", DEVNAME(sc), port); return (1); } bzero(ap, sizeof(struct ahci_port)); ap->ap_sc = sc; TAILQ_INIT(&ap->ap_ccb_free); ap->ap_ccbs = malloc(sizeof(struct ahci_ccb) * sc->sc_ncmds, M_DEVBUF, M_NOWAIT); if (ap->ap_ccbs == NULL) { printf("%s: unable to allocate command list for port %d\n", DEVNAME(sc), port); goto freeport; } bzero(ap->ap_ccbs, sizeof(struct ahci_ccb) * sc->sc_ncmds); 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 freeccbs; } /* calculate the size of the dmaable memory this port will need. */ i = sizeof(struct ahci_cmd) * sc->sc_ncmds + sizeof(struct ahci_rfis) + sizeof(struct ahci_cmd_list) * sc->sc_ncmds; ap->ap_dmamem = ahci_dmamem_alloc(sc, i); if (ap->ap_dmamem == NULL) { printf("unable to allocate dmamem for port %d\n", DEVNAME(sc), port); goto freeccbs; } kva = AHCI_DMA_KVA(ap->ap_dmamem); dva = AHCI_DMA_DVA(ap->ap_dmamem); for (i = 0; i < sc->sc_ncmds; i++) { ccb = &ap->ap_ccbs[i]; if (bus_dmamap_create(sc->sc_dmat, MAXPHYS, AHCI_MAX_PRDT, MAXPHYS, 0, 0, &ccb->ccb_dmamap) != 0) { printf("unable to create dmamap for port %d ccb %d\n", DEVNAME(sc), port, i); goto freemaps; } ccb->ccb_id = i; ccb->ccb_cmd = (struct ahci_cmd *)(kva + offset); ccb->ccb_cmd_dva = dva + offset; offset += sizeof(struct ahci_cmd); ahci_put_ccb(ap, ccb); } ap->ap_rfis = (struct ahci_rfis *)(kva + offset); ahci_pwrite(ap, AHCI_PREG_FB, (u_int32_t)(dva + offset)); ahci_pwrite(ap, AHCI_PREG_FBU, (u_int32_t)((dva + offset) >> 32)); offset += sizeof(struct ahci_rfis); ap->ap_cmd_list = (struct ahci_cmd_list *)(kva + offset); ahci_pwrite(ap, AHCI_PREG_CLB, (u_int32_t)(dva + offset)); ahci_pwrite(ap, AHCI_PREG_CLBU, (u_int32_t)((dva + offset) >> 32)); sc->sc_ports[port] = ap; return (0); freemaps: while ((ccb = ahci_get_ccb(ap)) != NULL) bus_dmamap_destroy(sc->sc_dmat, ccb->ccb_dmamap); ahci_dmamem_free(sc, ap->ap_dmamem); freeccbs: free(ap->ap_ccbs, M_DEVBUF); freeport: free(ap, M_DEVBUF); return (1); } void ahci_port_free(struct ahci_softc *sc, u_int port) { struct ahci_port *ap; struct ahci_ccb *ccb; int i; ap = sc->sc_ports[i]; for (i = 0; i < sc->sc_ncmds; i++) { ccb = &ap->ap_ccbs[i]; bus_dmamap_destroy(sc->sc_dmat, ccb->ccb_dmamap); } ahci_dmamem_free(sc, ap->ap_dmamem); /* bus_space(9) says we dont free the subregions handle */ free(ap->ap_ccbs, M_DEVBUF); free(ap, M_DEVBUF); sc->sc_ports[i] = NULL; } int ahci_intr(void *arg) { return (0); } struct ahci_ccb * ahci_get_ccb(struct ahci_port *ap) { struct ahci_ccb *ccb; ccb = TAILQ_FIRST(&ap->ap_ccb_free); if (ccb != NULL) TAILQ_REMOVE(&ap->ap_ccb_free, ccb, ccb_entry); return (ccb); } void ahci_put_ccb(struct ahci_port *ap, struct ahci_ccb *ccb) { /* scrub bits */ TAILQ_INSERT_TAIL(&ap->ap_ccb_free, ccb, ccb_entry); } struct ahci_dmamem * ahci_dmamem_alloc(struct ahci_softc *sc, size_t size) { struct ahci_dmamem *adm; int nsegs; adm = malloc(sizeof(struct ahci_dmamem), M_DEVBUF, M_NOWAIT); if (adm == NULL) return (NULL); bzero(adm, sizeof(struct ahci_dmamem)); 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) != 0) goto destroy; if (bus_dmamem_map(sc->sc_dmat, &adm->adm_seg, nsegs, size, &adm->adm_kva, BUS_DMA_NOWAIT) != 0) goto free; if (bus_dmamap_load(sc->sc_dmat, adm->adm_map, adm->adm_kva, size, NULL, BUS_DMA_NOWAIT) != 0) goto unmap; bzero(adm->adm_kva, size); 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); 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); } 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); } 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_wait_eq(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); } 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); }