Date: Sun, 1 Nov 2009 11:34:13 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r198749 - in stable/8/sys: . amd64/include/xen cddl/contrib/opensolaris contrib/dev/acpica contrib/pf dev/xen/xenpci pci Message-ID: <200911011134.nA1BYD9f022372@svn.freebsd.org>
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Author: avg Date: Sun Nov 1 11:34:13 2009 New Revision: 198749 URL: http://svn.freebsd.org/changeset/base/198749 Log: MFC r197128,197325: add support for smbus controller found in AMD SB700 Modified: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) stable/8/sys/pci/intpm.c stable/8/sys/pci/intpmreg.h Modified: stable/8/sys/pci/intpm.c ============================================================================== --- stable/8/sys/pci/intpm.c Sun Nov 1 11:31:06 2009 (r198748) +++ stable/8/sys/pci/intpm.c Sun Nov 1 11:34:13 2009 (r198749) @@ -53,6 +53,8 @@ struct intsmb_softc { void *irq_hand; device_t smbus; int isbusy; + int cfg_irq9; + int poll; struct mtx lock; }; @@ -96,6 +98,10 @@ intsmb_probe(device_t dev) #endif device_set_desc(dev, "Intel PIIX4 SMBUS Interface"); break; + case 0x43851002: + device_set_desc(dev, "AMD SB600/700/710/750 SMBus Controller"); + /* XXX Maybe force polling right here? */ + break; default: return (ENXIO); } @@ -108,12 +114,24 @@ intsmb_attach(device_t dev) { struct intsmb_softc *sc = device_get_softc(dev); int error, rid, value; + int intr; char *str; sc->dev = dev; mtx_init(&sc->lock, device_get_nameunit(dev), "intsmb", MTX_DEF); + sc->cfg_irq9 = 0; +#ifndef NO_CHANGE_PCICONF + switch (pci_get_devid(dev)) { + case 0x71138086: /* Intel 82371AB */ + case 0x719b8086: /* Intel 82443MX */ + /* Changing configuration is allowed. */ + sc->cfg_irq9 = 1; + break; + } +#endif + rid = PCI_BASE_ADDR_SMB; sc->io_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE); @@ -123,27 +141,42 @@ intsmb_attach(device_t dev) goto fail; } -#ifndef NO_CHANGE_PCICONF - pci_write_config(dev, PCIR_INTLINE, 0x9, 1); - pci_write_config(dev, PCI_HST_CFG_SMB, - PCI_INTR_SMB_IRQ9 | PCI_INTR_SMB_ENABLE, 1); -#endif + if (sc->cfg_irq9) { + pci_write_config(dev, PCIR_INTLINE, 0x9, 1); + pci_write_config(dev, PCI_HST_CFG_SMB, + PCI_INTR_SMB_IRQ9 | PCI_INTR_SMB_ENABLE, 1); + } value = pci_read_config(dev, PCI_HST_CFG_SMB, 1); - switch (value & 0xe) { + sc->poll = (value & PCI_INTR_SMB_ENABLE) == 0; + intr = value & PCI_INTR_SMB_MASK; + switch (intr) { case PCI_INTR_SMB_SMI: str = "SMI"; break; case PCI_INTR_SMB_IRQ9: str = "IRQ 9"; break; + case PCI_INTR_SMB_IRQ_PCI: + str = "PCI IRQ"; + break; default: str = "BOGUS"; } + device_printf(dev, "intr %s %s ", str, - (value & 1) ? "enabled" : "disabled"); + sc->poll == 0 ? "enabled" : "disabled"); printf("revision %d\n", pci_read_config(dev, PCI_REVID_SMB, 1)); - if ((value & 0xe) != PCI_INTR_SMB_IRQ9) { + if (!sc->poll && intr == PCI_INTR_SMB_SMI) { + device_printf(dev, + "using polling mode when configured interrupt is SMI\n"); + sc->poll = 1; + } + + if (sc->poll) + goto no_intr; + + if (intr != PCI_INTR_SMB_IRQ9 && intr != PCI_INTR_SMB_IRQ_PCI) { device_printf(dev, "Unsupported interrupt mode\n"); error = ENXIO; goto fail; @@ -151,7 +184,9 @@ intsmb_attach(device_t dev) /* Force IRQ 9. */ rid = 0; - bus_set_resource(dev, SYS_RES_IRQ, rid, 9, 1); + if (sc->cfg_irq9) + bus_set_resource(dev, SYS_RES_IRQ, rid, 9, 1); + sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); if (sc->irq_res == NULL) { @@ -167,6 +202,7 @@ intsmb_attach(device_t dev) goto fail; } +no_intr: sc->isbusy = 0; sc->smbus = device_add_child(dev, "smbus", -1); if (sc->smbus == NULL) { @@ -361,7 +397,7 @@ intsmb_start(struct intsmb_softc *sc, un tmp |= PIIX4_SMBHSTCNT_START; /* While not in autoconfiguration enable interrupts. */ - if (!cold && !nointr) + if (!sc->poll && !cold && !nointr) tmp |= PIIX4_SMBHSTCNT_INTREN; bus_write_1(sc->io_res, PIIX4_SMBHSTCNT, tmp); } @@ -411,8 +447,6 @@ intsmb_stop_poll(struct intsmb_softc *sc if (!(status & PIIX4_SMBHSTSTAT_BUSY)) { sc->isbusy = 0; error = intsmb_error(sc->dev, status); - if (error == 0 && !(status & PIIX4_SMBHSTSTAT_INTR)) - device_printf(sc->dev, "unknown cause why?\n"); return (error); } } @@ -434,7 +468,7 @@ intsmb_stop(struct intsmb_softc *sc) INTSMB_LOCK_ASSERT(sc); - if (cold) + if (sc->poll || cold) /* So that it can use device during device probe on SMBus. */ return (intsmb_stop_poll(sc)); Modified: stable/8/sys/pci/intpmreg.h ============================================================================== --- stable/8/sys/pci/intpmreg.h Sun Nov 1 11:31:06 2009 (r198748) +++ stable/8/sys/pci/intpmreg.h Sun Nov 1 11:34:13 2009 (r198749) @@ -35,7 +35,9 @@ #define PCI_BASE_ADDR_SMB 0x90 /* IO BAR. */ #define PCI_BASE_ADDR_PM 0x40 #define PCI_HST_CFG_SMB 0xd2 /* Host Configuration */ +#define PCI_INTR_SMB_MASK 0xe #define PCI_INTR_SMB_SMI 0 +#define PCI_INTR_SMB_IRQ_PCI 2 #define PCI_INTR_SMB_IRQ9 8 #define PCI_INTR_SMB_ENABLE 1 #define PCI_SLV_CMD_SMB 0xd3 /*SLAVE COMMAND*/
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