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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include "ssb_private.h"
#include <linux/ssb/ssb.h>#include <linux/ssb/ssb_regs.h>#include <linux/pci.h>#include <linux/io.h>
#include <pcmcia/cistpl.h>#include <pcmcia/ds.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"; case SSB_DEV_ARM_CM3: return "ARM Cortex M3"; } 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: dev_err(&pci_dev->dev, "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: pr_err("CHIPID not in nrcores fallback list\n"); }
return 1;}
static u32 scan_read32(struct ssb_bus *bus, u8 current_coreidx, u16 offset){ u32 lo, hi;
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); lo = readw(bus->mmio + offset); hi = readw(bus->mmio + offset + 2); return lo | (hi << 16); case SSB_BUSTYPE_SDIO: offset += current_coreidx * SSB_CORE_SIZE; return ssb_sdio_scan_read32(bus, offset); } 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); case SSB_BUSTYPE_SDIO: return ssb_sdio_scan_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 WARN_ON(1); /* Can't reach this code. */#endif break; case SSB_BUSTYPE_SDIO: 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 WARN_ON(1); /* Can't reach this code. */#endif break; case SSB_BUSTYPE_SDIO: /* Nothing to ioremap in the SDIO case, just fake it */ mmio = (void __iomem *)baseaddr; 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 == 0x4313) || (bus->host_pci->device == 0x431A) || (bus->host_pci->device == 0x4321) || (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); bus->chip_rev = bus->host_pci->revision; bus->chip_package = 0; } else { bus->chip_id = 0x4710; bus->chip_rev = 0; bus->chip_package = 0; } } pr_info("Found chip with id 0x%04X, rev 0x%02X and package 0x%02X\n", bus->chip_id, bus->chip_rev, bus->chip_package); if (!bus->nr_devices) bus->nr_devices = chipid_to_nrcores(bus->chip_id); if (bus->nr_devices > ARRAY_SIZE(bus->devices)) { pr_err("More than %d ssb cores found (%d)\n", SSB_MAX_NR_CORES, bus->nr_devices); err = -EINVAL; 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;
pr_debug("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)) { pr_debug("Ignoring additional 802.11 core\n"); continue; } } break; case SSB_DEV_EXTIF:#ifdef CONFIG_SSB_DRIVER_EXTIF if (bus->extif.dev) { pr_warn("WARNING: Multiple EXTIFs found\n"); break; } bus->extif.dev = dev;#endif /* CONFIG_SSB_DRIVER_EXTIF */ break; case SSB_DEV_CHIPCOMMON: if (bus->chipco.dev) { pr_warn("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) { pr_warn("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->bustype == SSB_BUSTYPE_PCI) { /* Ignore PCI cores on PCI-E cards. * Ignore PCI-E cores on PCI cards. */ if (dev->id.coreid == SSB_DEV_PCI) { if (pci_is_pcie(bus->host_pci)) continue; } else { if (!pci_is_pcie(bus->host_pci)) continue; } } if (bus->pcicore.dev) { pr_warn("WARNING: Multiple PCI(E) cores found\n"); break; } bus->pcicore.dev = dev;#endif /* CONFIG_SSB_DRIVER_PCICORE */ break; case SSB_DEV_ETHERNET: if (bus->bustype == SSB_BUSTYPE_PCI) { if (bus->host_pci->vendor == PCI_VENDOR_ID_BROADCOM && (bus->host_pci->device & 0xFF00) == 0x4300) { /* This is a dangling ethernet core on a * wireless device. Ignore it. */ continue; } } break; default: break; }
dev_i++; } bus->nr_devices = dev_i;
err = 0;out: return err;err_unmap: ssb_iounmap(bus); goto out;}