+++ /dev/null
-/*
- * Sonics Silicon Backplane
- * Bus scanning
- *
- * Copyright (C) 2005-2007 Michael Buesch <mb@bu3sch.de>
- * Copyright (C) 2005 Martin Langer <martin-langer@gmx.de>
- * Copyright (C) 2005 Stefano Brivio <st3@riseup.net>
- * Copyright (C) 2005 Danny van Dyk <kugelfang@gentoo.org>
- * Copyright (C) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch>
- * Copyright (C) 2006 Broadcom Corporation.
- *
- * Licensed under the GNU/GPL. See COPYING for details.
- */
-
-#include <linux/ssb/ssb.h>
-#include <linux/ssb/ssb_regs.h>
-#include <linux/pci.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_SSB_PCMCIAHOST
-# include <pcmcia/cs_types.h>
-# include <pcmcia/cs.h>
-# include <pcmcia/cistpl.h>
-# include <pcmcia/ds.h>
-#endif
-
-#include "ssb_private.h"
-
-
-const char * ssb_core_name(u16 coreid)
-{
- switch (coreid) {
- case SSB_DEV_CHIPCOMMON:
- return "ChipCommon";
- case SSB_DEV_ILINE20:
- return "ILine 20";
- case SSB_DEV_SDRAM:
- return "SDRAM";
- case SSB_DEV_PCI:
- return "PCI";
- case SSB_DEV_MIPS:
- return "MIPS";
- case SSB_DEV_ETHERNET:
- return "Fast Ethernet";
- case SSB_DEV_V90:
- return "V90";
- case SSB_DEV_USB11_HOSTDEV:
- return "USB 1.1 Hostdev";
- case SSB_DEV_ADSL:
- return "ADSL";
- case SSB_DEV_ILINE100:
- return "ILine 100";
- case SSB_DEV_IPSEC:
- return "IPSEC";
- case SSB_DEV_PCMCIA:
- return "PCMCIA";
- case SSB_DEV_INTERNAL_MEM:
- return "Internal Memory";
- case SSB_DEV_MEMC_SDRAM:
- return "MEMC SDRAM";
- case SSB_DEV_EXTIF:
- return "EXTIF";
- case SSB_DEV_80211:
- return "IEEE 802.11";
- case SSB_DEV_MIPS_3302:
- return "MIPS 3302";
- case SSB_DEV_USB11_HOST:
- return "USB 1.1 Host";
- case SSB_DEV_USB11_DEV:
- return "USB 1.1 Device";
- case SSB_DEV_USB20_HOST:
- return "USB 2.0 Host";
- case SSB_DEV_USB20_DEV:
- return "USB 2.0 Device";
- case SSB_DEV_SDIO_HOST:
- return "SDIO Host";
- case SSB_DEV_ROBOSWITCH:
- return "Roboswitch";
- case SSB_DEV_PARA_ATA:
- return "PATA";
- case SSB_DEV_SATA_XORDMA:
- return "SATA XOR-DMA";
- case SSB_DEV_ETHERNET_GBIT:
- return "GBit Ethernet";
- case SSB_DEV_PCIE:
- return "PCI-E";
- case SSB_DEV_MIMO_PHY:
- return "MIMO PHY";
- case SSB_DEV_SRAM_CTRLR:
- return "SRAM Controller";
- case SSB_DEV_MINI_MACPHY:
- return "Mini MACPHY";
- case SSB_DEV_ARM_1176:
- return "ARM 1176";
- case SSB_DEV_ARM_7TDMI:
- return "ARM 7TDMI";
- }
- return "UNKNOWN";
-}
-
-static u16 pcidev_to_chipid(struct pci_dev *pci_dev)
-{
- u16 chipid_fallback = 0;
-
- switch (pci_dev->device) {
- case 0x4301:
- chipid_fallback = 0x4301;
- break;
- case 0x4305 ... 0x4307:
- chipid_fallback = 0x4307;
- break;
- case 0x4403:
- chipid_fallback = 0x4402;
- break;
- case 0x4610 ... 0x4615:
- chipid_fallback = 0x4610;
- break;
- case 0x4710 ... 0x4715:
- chipid_fallback = 0x4710;
- break;
- case 0x4320 ... 0x4325:
- chipid_fallback = 0x4309;
- break;
- case PCI_DEVICE_ID_BCM4401:
- case PCI_DEVICE_ID_BCM4401B0:
- case PCI_DEVICE_ID_BCM4401B1:
- chipid_fallback = 0x4401;
- break;
- default:
- ssb_printk(KERN_ERR PFX
- "PCI-ID not in fallback list\n");
- }
-
- return chipid_fallback;
-}
-
-static u8 chipid_to_nrcores(u16 chipid)
-{
- switch (chipid) {
- case 0x5365:
- return 7;
- case 0x4306:
- return 6;
- case 0x4310:
- return 8;
- case 0x4307:
- case 0x4301:
- return 5;
- case 0x4401:
- case 0x4402:
- return 3;
- case 0x4710:
- case 0x4610:
- case 0x4704:
- return 9;
- default:
- ssb_printk(KERN_ERR PFX
- "CHIPID not in nrcores fallback list\n");
- }
-
- return 1;
-}
-
-static u32 scan_read32(struct ssb_bus *bus, u8 current_coreidx,
- u16 offset)
-{
- switch (bus->bustype) {
- case SSB_BUSTYPE_SSB:
- offset += current_coreidx * SSB_CORE_SIZE;
- break;
- case SSB_BUSTYPE_PCI:
- break;
- case SSB_BUSTYPE_PCMCIA:
- if (offset >= 0x800) {
- ssb_pcmcia_switch_segment(bus, 1);
- offset -= 0x800;
- } else
- ssb_pcmcia_switch_segment(bus, 0);
- break;
- }
- return readl(bus->mmio + offset);
-}
-
-static int scan_switchcore(struct ssb_bus *bus, u8 coreidx)
-{
- switch (bus->bustype) {
- case SSB_BUSTYPE_SSB:
- break;
- case SSB_BUSTYPE_PCI:
- return ssb_pci_switch_coreidx(bus, coreidx);
- case SSB_BUSTYPE_PCMCIA:
- return ssb_pcmcia_switch_coreidx(bus, coreidx);
- }
- return 0;
-}
-
-void ssb_iounmap(struct ssb_bus *bus)
-{
- switch (bus->bustype) {
- case SSB_BUSTYPE_SSB:
- case SSB_BUSTYPE_PCMCIA:
- iounmap(bus->mmio);
- break;
- case SSB_BUSTYPE_PCI:
-#ifdef CONFIG_SSB_PCIHOST
- pci_iounmap(bus->host_pci, bus->mmio);
-#else
- assert(0); /* Can't reach this code. */
-#endif
- break;
- }
- bus->mmio = NULL;
- bus->mapped_device = NULL;
-}
-
-static void __iomem * ssb_ioremap(struct ssb_bus *bus,
- unsigned long baseaddr)
-{
- void __iomem *mmio = NULL;
-
- switch (bus->bustype) {
- case SSB_BUSTYPE_SSB:
- /* Only map the first core for now. */
- /* fallthrough... */
- case SSB_BUSTYPE_PCMCIA:
- mmio = ioremap(baseaddr, SSB_CORE_SIZE);
- break;
- case SSB_BUSTYPE_PCI:
-#ifdef CONFIG_SSB_PCIHOST
- mmio = pci_iomap(bus->host_pci, 0, ~0UL);
-#else
- assert(0); /* Can't reach this code. */
-#endif
- break;
- }
-
- return mmio;
-}
-
-static int we_support_multiple_80211_cores(struct ssb_bus *bus)
-{
- /* More than one 802.11 core is only supported by special chips.
- * There are chips with two 802.11 cores, but with dangling
- * pins on the second core. Be careful and reject them here.
- */
-
-#ifdef CONFIG_SSB_PCIHOST
- if (bus->bustype == SSB_BUSTYPE_PCI) {
- if (bus->host_pci->vendor == PCI_VENDOR_ID_BROADCOM &&
- bus->host_pci->device == 0x4324)
- return 1;
- }
-#endif /* CONFIG_SSB_PCIHOST */
- return 0;
-}
-
-int ssb_bus_scan(struct ssb_bus *bus,
- unsigned long baseaddr)
-{
- int err = -ENOMEM;
- void __iomem *mmio;
- u32 idhi, cc, rev, tmp;
- int dev_i, i;
- struct ssb_device *dev;
- int nr_80211_cores = 0;
-
- mmio = ssb_ioremap(bus, baseaddr);
- if (!mmio)
- goto out;
- bus->mmio = mmio;
-
- err = scan_switchcore(bus, 0); /* Switch to first core */
- if (err)
- goto err_unmap;
-
- idhi = scan_read32(bus, 0, SSB_IDHIGH);
- cc = (idhi & SSB_IDHIGH_CC) >> SSB_IDHIGH_CC_SHIFT;
- rev = (idhi & SSB_IDHIGH_RCLO);
- rev |= (idhi & SSB_IDHIGH_RCHI) >> SSB_IDHIGH_RCHI_SHIFT;
-
- bus->nr_devices = 0;
- if (cc == SSB_DEV_CHIPCOMMON) {
- tmp = scan_read32(bus, 0, SSB_CHIPCO_CHIPID);
-
- bus->chip_id = (tmp & SSB_CHIPCO_IDMASK);
- bus->chip_rev = (tmp & SSB_CHIPCO_REVMASK) >>
- SSB_CHIPCO_REVSHIFT;
- bus->chip_package = (tmp & SSB_CHIPCO_PACKMASK) >>
- SSB_CHIPCO_PACKSHIFT;
- if (rev >= 4) {
- bus->nr_devices = (tmp & SSB_CHIPCO_NRCORESMASK) >>
- SSB_CHIPCO_NRCORESSHIFT;
- }
- tmp = scan_read32(bus, 0, SSB_CHIPCO_CAP);
- bus->chipco.capabilities = tmp;
- } else {
- if (bus->bustype == SSB_BUSTYPE_PCI) {
- bus->chip_id = pcidev_to_chipid(bus->host_pci);
- pci_read_config_word(bus->host_pci, PCI_REVISION_ID,
- &bus->chip_rev);
- bus->chip_package = 0;
- } else {
- bus->chip_id = 0x4710;
- bus->chip_rev = 0;
- bus->chip_package = 0;
- }
- }
- if (!bus->nr_devices)
- bus->nr_devices = chipid_to_nrcores(bus->chip_id);
- if (bus->nr_devices > ARRAY_SIZE(bus->devices)) {
- ssb_printk(KERN_ERR PFX
- "More than %d ssb cores found (%d)\n",
- SSB_MAX_NR_CORES, bus->nr_devices);
- goto err_unmap;
- }
- if (bus->bustype == SSB_BUSTYPE_SSB) {
- /* Now that we know the number of cores,
- * remap the whole IO space for all cores.
- */
- err = -ENOMEM;
- iounmap(mmio);
- mmio = ioremap(baseaddr, SSB_CORE_SIZE * bus->nr_devices);
- if (!mmio)
- goto out;
- bus->mmio = mmio;
- }
-
- /* Fetch basic information about each core/device */
- for (i = 0, dev_i = 0; i < bus->nr_devices; i++) {
- err = scan_switchcore(bus, i);
- if (err)
- goto err_unmap;
- dev = &(bus->devices[dev_i]);
-
- idhi = scan_read32(bus, i, SSB_IDHIGH);
- dev->id.coreid = (idhi & SSB_IDHIGH_CC) >> SSB_IDHIGH_CC_SHIFT;
- dev->id.revision = (idhi & SSB_IDHIGH_RCLO);
- dev->id.revision |= (idhi & SSB_IDHIGH_RCHI) >> SSB_IDHIGH_RCHI_SHIFT;
- dev->id.vendor = (idhi & SSB_IDHIGH_VC) >> SSB_IDHIGH_VC_SHIFT;
- dev->core_index = i;
- dev->bus = bus;
- dev->ops = bus->ops;
-
- ssb_dprintk(KERN_INFO PFX
- "Core %d found: %s "
- "(cc 0x%03X, rev 0x%02X, vendor 0x%04X)\n",
- i, ssb_core_name(dev->id.coreid),
- dev->id.coreid, dev->id.revision, dev->id.vendor);
-
- switch (dev->id.coreid) {
- case SSB_DEV_80211:
- nr_80211_cores++;
- if (nr_80211_cores > 1) {
- if (!we_support_multiple_80211_cores(bus)) {
- ssb_dprintk(KERN_INFO PFX "Ignoring additional "
- "802.11 core\n");
- continue;
- }
- }
- break;
- case SSB_DEV_EXTIF:
-#ifdef CONFIG_SSB_DRIVER_EXTIF
- if (bus->extif.dev) {
- ssb_printk(KERN_WARNING PFX
- "WARNING: Multiple EXTIFs found\n");
- break;
- }
- bus->extif.dev = dev;
-#endif /* CONFIG_SSB_DRIVER_EXTIF */
- break;
- case SSB_DEV_CHIPCOMMON:
- if (bus->chipco.dev) {
- ssb_printk(KERN_WARNING PFX
- "WARNING: Multiple ChipCommon found\n");
- break;
- }
- bus->chipco.dev = dev;
- break;
- case SSB_DEV_MIPS:
- case SSB_DEV_MIPS_3302:
-#ifdef CONFIG_SSB_DRIVER_MIPS
- if (bus->mipscore.dev) {
- ssb_printk(KERN_WARNING PFX
- "WARNING: Multiple MIPS cores found\n");
- break;
- }
- bus->mipscore.dev = dev;
-#endif /* CONFIG_SSB_DRIVER_MIPS */
- break;
- case SSB_DEV_PCI:
- case SSB_DEV_PCIE:
-#ifdef CONFIG_SSB_DRIVER_PCICORE
- if (bus->pcicore.dev) {
- ssb_printk(KERN_WARNING PFX
- "WARNING: Multiple PCI(E) cores found\n");
- break;
- }
- bus->pcicore.dev = dev;
-#endif /* CONFIG_SSB_DRIVER_PCICORE */
- break;
- default:
- break;
- }
-
- dev_i++;
- }
- bus->nr_devices = dev_i;
-
- err = 0;
-out:
- return err;
-err_unmap:
- ssb_iounmap(bus);
- goto out;
-}
projects / openwrt / staging / chunkeey.git / blobdiff