/* * SDIO access interface for drivers - linux specific (pci only) * * Copyright (C) 1999-2011, Broadcom Corporation * * Unless you and Broadcom execute a separate written software license * agreement governing use of this software, this software is licensed to you * under the terms of the GNU General Public License version 2 (the "GPL"), * available at http://www.broadcom.com/licenses/GPLv2.php, with the * following added to such license: * * As a special exception, the copyright holders of this software give you * permission to link this software with independent modules, and to copy and * distribute the resulting executable under terms of your choice, provided that * you also meet, for each linked independent module, the terms and conditions of * the license of that module. An independent module is a module which is not * derived from this software. The special exception does not apply to any * modifications of the software. * * Notwithstanding the above, under no circumstances may you combine this * software in any way with any other Broadcom software provided under a license * other than the GPL, without Broadcom's express prior written consent. * * $Id: bcmsdh_linux.c,v 1.72.6.5 2010-12-23 01:13:15 Exp $ */ /** * @file bcmsdh_linux.c */ #define __UNDEF_NO_VERSION__ #include #include #include #include #include #include #include #include #include #if defined(OOB_INTR_ONLY) #include extern void dhdsdio_isr(void * args); #include #include #include #endif /* defined(OOB_INTR_ONLY) */ /** * SDIO Host Controller info */ typedef struct bcmsdh_hc bcmsdh_hc_t; struct bcmsdh_hc { bcmsdh_hc_t *next; #ifdef BCMPLATFORM_BUS struct device *dev; /* platform device handle */ #else struct pci_dev *dev; /* pci device handle */ #endif /* BCMPLATFORM_BUS */ osl_t *osh; void *regs; /* SDIO Host Controller address */ bcmsdh_info_t *sdh; /* SDIO Host Controller handle */ void *ch; unsigned int oob_irq; unsigned long oob_flags; /* OOB Host specifiction as edge and etc */ bool oob_irq_registered; bool oob_irq_enable_flag; #if defined(OOB_INTR_ONLY) spinlock_t irq_lock; #endif }; static bcmsdh_hc_t *sdhcinfo = NULL; /* driver info, initialized when bcmsdh_register is called */ static bcmsdh_driver_t drvinfo = {NULL, NULL}; /* debugging macros */ #define SDLX_MSG(x) /** * Checks to see if vendor and device IDs match a supported SDIO Host Controller. */ bool bcmsdh_chipmatch(uint16 vendor, uint16 device) { /* Add other vendors and devices as required */ #ifdef BCMSDIOH_STD /* Check for Arasan host controller */ if (vendor == VENDOR_SI_IMAGE) { return (TRUE); } /* Check for BRCM 27XX Standard host controller */ if (device == BCM27XX_SDIOH_ID && vendor == VENDOR_BROADCOM) { return (TRUE); } /* Check for BRCM Standard host controller */ if (device == SDIOH_FPGA_ID && vendor == VENDOR_BROADCOM) { return (TRUE); } /* Check for TI PCIxx21 Standard host controller */ if (device == PCIXX21_SDIOH_ID && vendor == VENDOR_TI) { return (TRUE); } if (device == PCIXX21_SDIOH0_ID && vendor == VENDOR_TI) { return (TRUE); } /* Ricoh R5C822 Standard SDIO Host */ if (device == R5C822_SDIOH_ID && vendor == VENDOR_RICOH) { return (TRUE); } /* JMicron Standard SDIO Host */ if (device == JMICRON_SDIOH_ID && vendor == VENDOR_JMICRON) { return (TRUE); } #endif /* BCMSDIOH_STD */ #ifdef BCMSDIOH_SPI /* This is the PciSpiHost. */ if (device == SPIH_FPGA_ID && vendor == VENDOR_BROADCOM) { printf("Found PCI SPI Host Controller\n"); return (TRUE); } #endif /* BCMSDIOH_SPI */ return (FALSE); } #if defined(BCMPLATFORM_BUS) #if defined(BCMLXSDMMC) /* forward declarations */ int bcmsdh_probe(struct device *dev); int bcmsdh_remove(struct device *dev); EXPORT_SYMBOL(bcmsdh_probe); EXPORT_SYMBOL(bcmsdh_remove); #else /* forward declarations */ static int __devinit bcmsdh_probe(struct device *dev); static int __devexit bcmsdh_remove(struct device *dev); #endif /* BCMLXSDMMC */ #ifndef BCMLXSDMMC static struct device_driver bcmsdh_driver = { .name = "pxa2xx-mci", .bus = &platform_bus_type, .probe = bcmsdh_probe, .remove = bcmsdh_remove, .suspend = NULL, .resume = NULL, }; #endif /* BCMLXSDMMC */ #ifndef BCMLXSDMMC static #endif /* BCMLXSDMMC */ int bcmsdh_probe(struct device *dev) { osl_t *osh = NULL; bcmsdh_hc_t *sdhc = NULL; ulong regs = 0; bcmsdh_info_t *sdh = NULL; struct sdio_func *func = container_of(dev, struct sdio_func, dev); #if !defined(BCMLXSDMMC) && defined(BCMPLATFORM_BUS) struct platform_device *pdev; struct resource *r; #endif /* BCMLXSDMMC */ int irq = 0; uint32 vendevid; unsigned long irq_flags = 0; #if !defined(BCMLXSDMMC) && defined(BCMPLATFORM_BUS) pdev = to_platform_device(dev); r = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); if (!r || irq == NO_IRQ) return -ENXIO; #endif /* BCMLXSDMMC */ #if defined(OOB_INTR_ONLY) #ifdef HW_OOB irq_flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL | IORESOURCE_IRQ_SHAREABLE; #else irq_flags = IRQF_TRIGGER_FALLING; #endif /* HW_OOB */ /* Get customer specific OOB IRQ parametres: IRQ number as IRQ type */ irq = dhd_customer_oob_irq_map(&irq_flags); if (irq < 0) { SDLX_MSG(("%s: Host irq is not defined\n", __FUNCTION__)); return 1; } #endif /* defined(OOB_INTR_ONLY) */ /* allocate SDIO Host Controller state info */ if (!(osh = osl_attach(dev, PCI_BUS, FALSE))) { SDLX_MSG(("%s: osl_attach failed\n", __FUNCTION__)); goto err; } if (!(sdhc = MALLOC(osh, sizeof(bcmsdh_hc_t)))) { SDLX_MSG(("%s: out of memory, allocated %d bytes\n", __FUNCTION__, MALLOCED(osh))); goto err; } bzero(sdhc, sizeof(bcmsdh_hc_t)); sdhc->osh = osh; sdhc->dev = (void *)dev; #ifdef BCMLXSDMMC if (!(sdh = bcmsdh_attach(osh, (void *)0, (void **)®s, irq))) { SDLX_MSG(("%s: bcmsdh_attach failed\n", __FUNCTION__)); goto err; } #else if (!(sdh = bcmsdh_attach(osh, (void *)r->start, (void **)®s, irq))) { SDLX_MSG(("%s: bcmsdh_attach failed\n", __FUNCTION__)); goto err; } #endif /* BCMLXSDMMC */ sdhc->sdh = sdh; sdhc->oob_irq = irq; sdhc->oob_flags = irq_flags; sdhc->oob_irq_registered = FALSE; /* to make sure.. */ sdhc->oob_irq_enable_flag = FALSE; #if defined(OOB_INTR_ONLY) spin_lock_init(&sdhc->irq_lock); #endif /* chain SDIO Host Controller info together */ sdhc->next = sdhcinfo; sdhcinfo = sdhc; /* Read the vendor/device ID from the CIS */ vendevid = bcmsdh_query_device(sdh); /* try to attach to the target device */ if (!(sdhc->ch = drvinfo.attach((vendevid >> 16), func->device, 0, 0, 0, 0, (void *)regs, NULL, sdh, dev))) { SDLX_MSG(("%s: device attach failed\n", __FUNCTION__)); goto err; } return 0; /* error handling */ err: if (sdhc) { if (sdhc->sdh) bcmsdh_detach(sdhc->osh, sdhc->sdh); MFREE(osh, sdhc, sizeof(bcmsdh_hc_t)); } if (osh) osl_detach(osh); return -ENODEV; } #ifndef BCMLXSDMMC static #endif /* BCMLXSDMMC */ int bcmsdh_remove(struct device *dev) { bcmsdh_hc_t *sdhc, *prev; osl_t *osh; sdhc = sdhcinfo; drvinfo.detach(sdhc->ch); bcmsdh_detach(sdhc->osh, sdhc->sdh); /* find the SDIO Host Controller state for this pdev and take it out from the list */ for (sdhc = sdhcinfo, prev = NULL; sdhc; sdhc = sdhc->next) { if (sdhc->dev == (void *)dev) { if (prev) prev->next = sdhc->next; else sdhcinfo = NULL; break; } prev = sdhc; } if (!sdhc) { SDLX_MSG(("%s: failed\n", __FUNCTION__)); return 0; } /* release SDIO Host Controller info */ osh = sdhc->osh; MFREE(osh, sdhc, sizeof(bcmsdh_hc_t)); osl_detach(osh); #if !defined(BCMLXSDMMC) || defined(OOB_INTR_ONLY) dev_set_drvdata(dev, NULL); #endif /* !defined(BCMLXSDMMC) || defined(OOB_INTR_ONLY) */ return 0; } #else /* BCMPLATFORM_BUS */ #if !defined(BCMLXSDMMC) /* forward declarations for PCI probe and remove functions. */ static int __devinit bcmsdh_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent); static void __devexit bcmsdh_pci_remove(struct pci_dev *pdev); /** * pci id table */ static struct pci_device_id bcmsdh_pci_devid[] __devinitdata = { { vendor: PCI_ANY_ID, device: PCI_ANY_ID, subvendor: PCI_ANY_ID, subdevice: PCI_ANY_ID, class: 0, class_mask: 0, driver_data: 0, }, { 0, } }; MODULE_DEVICE_TABLE(pci, bcmsdh_pci_devid); /** * SDIO Host Controller pci driver info */ static struct pci_driver bcmsdh_pci_driver = { node: {}, name: "bcmsdh", id_table: bcmsdh_pci_devid, probe: bcmsdh_pci_probe, remove: bcmsdh_pci_remove, #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)) save_state: NULL, #endif suspend: NULL, resume: NULL, }; extern uint sd_pci_slot; /* Force detection to a particular PCI */ /* slot only . Allows for having multiple */ /* WL devices at once in a PC */ /* Only one instance of dhd will be */ /* usable at a time */ /* Upper word is bus number, */ /* lower word is slot number */ /* Default value of 0xffffffff turns this */ /* off */ module_param(sd_pci_slot, uint, 0); /** * Detect supported SDIO Host Controller and attach if found. * * Determine if the device described by pdev is a supported SDIO Host * Controller. If so, attach to it and attach to the target device. */ static int __devinit bcmsdh_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { osl_t *osh = NULL; bcmsdh_hc_t *sdhc = NULL; ulong regs; bcmsdh_info_t *sdh = NULL; int rc; if (sd_pci_slot != 0xFFFFffff) { if (pdev->bus->number != (sd_pci_slot>>16) || PCI_SLOT(pdev->devfn) != (sd_pci_slot&0xffff)) { SDLX_MSG(("%s: %s: bus %X, slot %X, vend %X, dev %X\n", __FUNCTION__, bcmsdh_chipmatch(pdev->vendor, pdev->device) ?"Found compatible SDIOHC" :"Probing unknown device", pdev->bus->number, PCI_SLOT(pdev->devfn), pdev->vendor, pdev->device)); return -ENODEV; } SDLX_MSG(("%s: %s: bus %X, slot %X, vendor %X, device %X (good PCI location)\n", __FUNCTION__, bcmsdh_chipmatch(pdev->vendor, pdev->device) ?"Using compatible SDIOHC" :"WARNING, forced use of unkown device", pdev->bus->number, PCI_SLOT(pdev->devfn), pdev->vendor, pdev->device)); } if ((pdev->vendor == VENDOR_TI) && ((pdev->device == PCIXX21_FLASHMEDIA_ID) || (pdev->device == PCIXX21_FLASHMEDIA0_ID))) { uint32 config_reg; SDLX_MSG(("%s: Disabling TI FlashMedia Controller.\n", __FUNCTION__)); if (!(osh = osl_attach(pdev, PCI_BUS, FALSE))) { SDLX_MSG(("%s: osl_attach failed\n", __FUNCTION__)); goto err; } config_reg = OSL_PCI_READ_CONFIG(osh, 0x4c, 4); /* * Set MMC_SD_DIS bit in FlashMedia Controller. * Disbling the SD/MMC Controller in the FlashMedia Controller * allows the Standard SD Host Controller to take over control * of the SD Slot. */ config_reg |= 0x02; OSL_PCI_WRITE_CONFIG(osh, 0x4c, 4, config_reg); osl_detach(osh); } /* match this pci device with what we support */ /* we can't solely rely on this to believe it is our SDIO Host Controller! */ if (!bcmsdh_chipmatch(pdev->vendor, pdev->device)) { return -ENODEV; } /* this is a pci device we might support */ SDLX_MSG(("%s: Found possible SDIO Host Controller: bus %d slot %d func %d irq %d\n", __FUNCTION__, pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), pdev->irq)); /* use bcmsdh_query_device() to get the vendor ID of the target device so * it will eventually appear in the Broadcom string on the console */ /* allocate SDIO Host Controller state info */ if (!(osh = osl_attach(pdev, PCI_BUS, FALSE))) { SDLX_MSG(("%s: osl_attach failed\n", __FUNCTION__)); goto err; } if (!(sdhc = MALLOC(osh, sizeof(bcmsdh_hc_t)))) { SDLX_MSG(("%s: out of memory, allocated %d bytes\n", __FUNCTION__, MALLOCED(osh))); goto err; } bzero(sdhc, sizeof(bcmsdh_hc_t)); sdhc->osh = osh; sdhc->dev = pdev; /* map to address where host can access */ pci_set_master(pdev); rc = pci_enable_device(pdev); if (rc) { SDLX_MSG(("%s: Cannot enable PCI device\n", __FUNCTION__)); goto err; } if (!(sdh = bcmsdh_attach(osh, (void *)(uintptr)pci_resource_start(pdev, 0), (void **)®s, pdev->irq))) { SDLX_MSG(("%s: bcmsdh_attach failed\n", __FUNCTION__)); goto err; } sdhc->sdh = sdh; /* try to attach to the target device */ if (!(sdhc->ch = drvinfo.attach(VENDOR_BROADCOM, /* pdev->vendor, */ bcmsdh_query_device(sdh) & 0xFFFF, 0, 0, 0, 0, (void *)regs, NULL, sdh, pdev->dev))) { SDLX_MSG(("%s: device attach failed\n", __FUNCTION__)); goto err; } /* chain SDIO Host Controller info together */ sdhc->next = sdhcinfo; sdhcinfo = sdhc; return 0; /* error handling */ err: if (sdhc) { if (sdhc->sdh) bcmsdh_detach(sdhc->osh, sdhc->sdh); MFREE(osh, sdhc, sizeof(bcmsdh_hc_t)); } if (osh) osl_detach(osh); return -ENODEV; } /** * Detach from target devices and SDIO Host Controller */ static void __devexit bcmsdh_pci_remove(struct pci_dev *pdev) { bcmsdh_hc_t *sdhc, *prev; osl_t *osh; /* find the SDIO Host Controller state for this pdev and take it out from the list */ for (sdhc = sdhcinfo, prev = NULL; sdhc; sdhc = sdhc->next) { if (sdhc->dev == pdev) { if (prev) prev->next = sdhc->next; else sdhcinfo = NULL; break; } prev = sdhc; } if (!sdhc) return; drvinfo.detach(sdhc->ch); bcmsdh_detach(sdhc->osh, sdhc->sdh); /* release SDIO Host Controller info */ osh = sdhc->osh; MFREE(osh, sdhc, sizeof(bcmsdh_hc_t)); osl_detach(osh); } #endif /* BCMLXSDMMC */ #endif /* BCMPLATFORM_BUS */ extern int sdio_function_init(void); int bcmsdh_register(bcmsdh_driver_t *driver) { int error = 0; drvinfo = *driver; #if defined(BCMPLATFORM_BUS) #if defined(BCMLXSDMMC) SDLX_MSG(("Linux Kernel SDIO/MMC Driver\n")); error = sdio_function_init(); #else SDLX_MSG(("Intel PXA270 SDIO Driver\n")); error = driver_register(&bcmsdh_driver); #endif /* defined(BCMLXSDMMC) */ return error; #endif /* defined(BCMPLATFORM_BUS) */ #if !defined(BCMPLATFORM_BUS) && !defined(BCMLXSDMMC) #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)) if (!(error = pci_module_init(&bcmsdh_pci_driver))) return 0; #else if (!(error = pci_register_driver(&bcmsdh_pci_driver))) return 0; #endif SDLX_MSG(("%s: pci_module_init failed 0x%x\n", __FUNCTION__, error)); #endif /* BCMPLATFORM_BUS */ return error; } extern void sdio_function_cleanup(void); void bcmsdh_unregister(void) { #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)) if (bcmsdh_pci_driver.node.next) #endif #if defined(BCMPLATFORM_BUS) && !defined(BCMLXSDMMC) driver_unregister(&bcmsdh_driver); #endif #if defined(BCMLXSDMMC) sdio_function_cleanup(); #endif /* BCMLXSDMMC */ #if !defined(BCMPLATFORM_BUS) && !defined(BCMLXSDMMC) pci_unregister_driver(&bcmsdh_pci_driver); #endif /* BCMPLATFORM_BUS */ } #if defined(OOB_INTR_ONLY) void bcmsdh_oob_intr_set(bool enable) { static bool curstate = 1; unsigned long flags; spin_lock_irqsave(&sdhcinfo->irq_lock, flags); if (curstate != enable) { if (enable) enable_irq(sdhcinfo->oob_irq); else disable_irq_nosync(sdhcinfo->oob_irq); curstate = enable; } spin_unlock_irqrestore(&sdhcinfo->irq_lock, flags); } static irqreturn_t wlan_oob_irq(int irq, void *dev_id) { dhd_pub_t *dhdp; dhdp = (dhd_pub_t *)dev_get_drvdata(sdhcinfo->dev); bcmsdh_oob_intr_set(0); if (dhdp == NULL) { SDLX_MSG(("Out of band GPIO interrupt fired way too early\n")); return IRQ_HANDLED; } dhdsdio_isr((void *)dhdp->bus); return IRQ_HANDLED; } void *bcmsdh_get_drvdata(void) { if (!sdhcinfo) return NULL; return dev_get_drvdata(sdhcinfo->dev); } int bcmsdh_register_oob_intr(void * dhdp) { int error = 0; SDLX_MSG(("%s Enter \n", __FUNCTION__)); /* IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL | IORESOURCE_IRQ_SHAREABLE; */ dev_set_drvdata(sdhcinfo->dev, dhdp); if (!sdhcinfo->oob_irq_registered) { SDLX_MSG(("%s IRQ=%d Type=%X \n", __FUNCTION__, (int)sdhcinfo->oob_irq, (int)sdhcinfo->oob_flags)); /* Refer to customer Host IRQ docs about proper irqflags definition */ error = request_irq(sdhcinfo->oob_irq, wlan_oob_irq, sdhcinfo->oob_flags, "bcmsdh_sdmmc", NULL); if (error) return -ENODEV; enable_irq_wake(sdhcinfo->oob_irq); sdhcinfo->oob_irq_registered = TRUE; sdhcinfo->oob_irq_enable_flag = TRUE; } return 0; } void bcmsdh_set_irq(int flag) { if (sdhcinfo->oob_irq_registered && sdhcinfo->oob_irq_enable_flag != flag) { SDLX_MSG(("%s Flag = %d", __FUNCTION__, flag)); sdhcinfo->oob_irq_enable_flag = flag; if (flag) { enable_irq(sdhcinfo->oob_irq); enable_irq_wake(sdhcinfo->oob_irq); } else { disable_irq_wake(sdhcinfo->oob_irq); disable_irq(sdhcinfo->oob_irq); } } } void bcmsdh_unregister_oob_intr(void) { SDLX_MSG(("%s: Enter\n", __FUNCTION__)); if (sdhcinfo->oob_irq_registered == TRUE) { bcmsdh_set_irq(FALSE); free_irq(sdhcinfo->oob_irq, NULL); sdhcinfo->oob_irq_registered = FALSE; } } #endif /* defined(OOB_INTR_ONLY) */ /* Module parameters specific to each host-controller driver */ extern uint sd_msglevel; /* Debug message level */ module_param(sd_msglevel, uint, 0); extern uint sd_power; /* 0 = SD Power OFF, 1 = SD Power ON. */ module_param(sd_power, uint, 0); extern uint sd_clock; /* SD Clock Control, 0 = SD Clock OFF, 1 = SD Clock ON */ module_param(sd_clock, uint, 0); extern uint sd_divisor; /* Divisor (-1 means external clock) */ module_param(sd_divisor, uint, 0); extern uint sd_sdmode; /* Default is SD4, 0=SPI, 1=SD1, 2=SD4 */ module_param(sd_sdmode, uint, 0); extern uint sd_hiok; /* Ok to use hi-speed mode */ module_param(sd_hiok, uint, 0); extern uint sd_f2_blocksize; module_param(sd_f2_blocksize, int, 0); #ifdef BCMSDH_MODULE EXPORT_SYMBOL(bcmsdh_attach); EXPORT_SYMBOL(bcmsdh_detach); EXPORT_SYMBOL(bcmsdh_intr_query); EXPORT_SYMBOL(bcmsdh_intr_enable); EXPORT_SYMBOL(bcmsdh_intr_disable); EXPORT_SYMBOL(bcmsdh_intr_reg); EXPORT_SYMBOL(bcmsdh_intr_dereg); #if defined(DHD_DEBUG) EXPORT_SYMBOL(bcmsdh_intr_pending); #endif EXPORT_SYMBOL(bcmsdh_devremove_reg); EXPORT_SYMBOL(bcmsdh_cfg_read); EXPORT_SYMBOL(bcmsdh_cfg_write); EXPORT_SYMBOL(bcmsdh_cis_read); EXPORT_SYMBOL(bcmsdh_reg_read); EXPORT_SYMBOL(bcmsdh_reg_write); EXPORT_SYMBOL(bcmsdh_regfail); EXPORT_SYMBOL(bcmsdh_send_buf); EXPORT_SYMBOL(bcmsdh_recv_buf); EXPORT_SYMBOL(bcmsdh_rwdata); EXPORT_SYMBOL(bcmsdh_abort); EXPORT_SYMBOL(bcmsdh_query_device); EXPORT_SYMBOL(bcmsdh_query_iofnum); EXPORT_SYMBOL(bcmsdh_iovar_op); EXPORT_SYMBOL(bcmsdh_register); EXPORT_SYMBOL(bcmsdh_unregister); EXPORT_SYMBOL(bcmsdh_chipmatch); EXPORT_SYMBOL(bcmsdh_reset); EXPORT_SYMBOL(bcmsdh_waitlockfree); EXPORT_SYMBOL(bcmsdh_get_dstatus); EXPORT_SYMBOL(bcmsdh_cfg_read_word); EXPORT_SYMBOL(bcmsdh_cfg_write_word); EXPORT_SYMBOL(bcmsdh_cur_sbwad); EXPORT_SYMBOL(bcmsdh_chipinfo); #endif /* BCMSDH_MODULE */