From 6e809dd8f18d3916e8cabec7173103fda69b2c8a Mon Sep 17 00:00:00 2001 From: hauke Date: Sat, 21 Jan 2012 22:39:20 +0000 Subject: brcm47xx: add support for pcie host controller on bcma based SoCs. This also adds minimal support for the BCMA43224 pcie wireless card. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29843 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../0040-bcma-add-PCIe-host-controller.patch | 845 +++++++++++++++++++++ 1 file changed, 845 insertions(+) create mode 100644 target/linux/brcm47xx/patches-3.2/0040-bcma-add-PCIe-host-controller.patch (limited to 'target/linux/brcm47xx/patches-3.2/0040-bcma-add-PCIe-host-controller.patch') diff --git a/target/linux/brcm47xx/patches-3.2/0040-bcma-add-PCIe-host-controller.patch b/target/linux/brcm47xx/patches-3.2/0040-bcma-add-PCIe-host-controller.patch new file mode 100644 index 000000000..2afd09aee --- /dev/null +++ b/target/linux/brcm47xx/patches-3.2/0040-bcma-add-PCIe-host-controller.patch @@ -0,0 +1,845 @@ +From 47d0e8c2743729b4248585d33b55b6aaeac008d5 Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens +Date: Sun, 8 Jan 2012 16:53:15 +0100 +Subject: [PATCH 25/34] bcma: add PCIe host controller + +Some SoCs have a PCIe host controller to make it possible to attach +some other devices to it, like an other Wifi card. +This code was tested with an Netgear WNDR3400 (bcm4716 based), but +should work with all bcma based SoCs. + +Signed-off-by: Hauke Mehrtens +--- + arch/mips/pci/pci-bcm47xx.c | 49 +++- + drivers/bcma/bcma_private.h | 1 + + drivers/bcma/driver_pci.c | 38 +-- + drivers/bcma/driver_pci_host.c | 576 +++++++++++++++++++++++++++++++++- + include/linux/bcma/bcma_driver_pci.h | 34 ++ + include/linux/bcma/bcma_regs.h | 27 ++ + 6 files changed, 686 insertions(+), 39 deletions(-) + +--- a/arch/mips/pci/pci-bcm47xx.c ++++ b/arch/mips/pci/pci-bcm47xx.c +@@ -25,6 +25,7 @@ + #include + #include + #include ++#include + #include + + int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +@@ -32,15 +33,12 @@ int __init pcibios_map_irq(const struct + return 0; + } + +-int pcibios_plat_dev_init(struct pci_dev *dev) +-{ + #ifdef CONFIG_BCM47XX_SSB ++static int bcm47xx_pcibios_plat_dev_init_ssb(struct pci_dev *dev) ++{ + int res; + u8 slot, pin; + +- if (bcm47xx_bus_type != BCM47XX_BUS_TYPE_SSB) +- return 0; +- + res = ssb_pcibios_plat_dev_init(dev); + if (res < 0) { + printk(KERN_ALERT "PCI: Failed to init device %s\n", +@@ -60,6 +58,47 @@ int pcibios_plat_dev_init(struct pci_dev + } + + dev->irq = res; ++ return 0; ++} + #endif ++ ++#ifdef CONFIG_BCM47XX_BCMA ++static int bcm47xx_pcibios_plat_dev_init_bcma(struct pci_dev *dev) ++{ ++ int res; ++ ++ res = bcma_core_pci_plat_dev_init(dev); ++ if (res < 0) { ++ printk(KERN_ALERT "PCI: Failed to init device %s\n", ++ pci_name(dev)); ++ return res; ++ } ++ ++ res = bcma_core_pci_pcibios_map_irq(dev); ++ ++ /* IRQ-0 and IRQ-1 are software interrupts. */ ++ if (res < 2) { ++ printk(KERN_ALERT "PCI: Failed to map IRQ of device %s\n", ++ pci_name(dev)); ++ return res; ++ } ++ ++ dev->irq = res; + return 0; + } ++#endif ++ ++int pcibios_plat_dev_init(struct pci_dev *dev) ++{ ++#ifdef CONFIG_BCM47XX_SSB ++ if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_SSB) ++ return bcm47xx_pcibios_plat_dev_init_ssb(dev); ++ else ++#endif ++#ifdef CONFIG_BCM47XX_BCMA ++ if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) ++ return bcm47xx_pcibios_plat_dev_init_bcma(dev); ++ else ++#endif ++ return 0; ++} +--- a/drivers/bcma/bcma_private.h ++++ b/drivers/bcma/bcma_private.h +@@ -55,6 +55,7 @@ extern void __exit bcma_host_pci_exit(vo + #endif /* CONFIG_BCMA_HOST_PCI */ + + #ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE ++bool __devinit bcma_core_pci_is_in_hostmode(struct bcma_drv_pci *pc); + void __devinit bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc); + #endif /* CONFIG_BCMA_DRIVER_PCI_HOSTMODE */ + +--- a/drivers/bcma/driver_pci.c ++++ b/drivers/bcma/driver_pci.c +@@ -2,7 +2,7 @@ + * Broadcom specific AMBA + * PCI Core + * +- * Copyright 2005, Broadcom Corporation ++ * Copyright 2005, 2011, Broadcom Corporation + * Copyright 2006, 2007, Michael Buesch + * Copyright 2011, 2012, Hauke Mehrtens + * +@@ -179,47 +179,19 @@ static void __devinit bcma_core_pci_clie + bcma_pcicore_serdes_workaround(pc); + } + +-static bool __devinit bcma_core_pci_is_in_hostmode(struct bcma_drv_pci *pc) +-{ +- struct bcma_bus *bus = pc->core->bus; +- u16 chipid_top; +- +- chipid_top = (bus->chipinfo.id & 0xFF00); +- if (chipid_top != 0x4700 && +- chipid_top != 0x5300) +- return false; +- +-#ifdef CONFIG_SSB_DRIVER_PCICORE +- if (bus->sprom.boardflags_lo & SSB_BFL_NOPCI) +- return false; +-#endif /* CONFIG_SSB_DRIVER_PCICORE */ +- +-#if 0 +- /* TODO: on BCMA we use address from EROM instead of magic formula */ +- u32 tmp; +- return !mips_busprobe32(tmp, (bus->mmio + +- (pc->core->core_index * BCMA_CORE_SIZE))); +-#endif +- +- return true; +-} +- + void __devinit bcma_core_pci_init(struct bcma_drv_pci *pc) + { + if (pc->setup_done) + return; + +- if (bcma_core_pci_is_in_hostmode(pc)) { + #ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE ++ pc->hostmode = bcma_core_pci_is_in_hostmode(pc); ++ if (pc->hostmode) + bcma_core_pci_hostmode_init(pc); +-#else +- pr_err("Driver compiled without support for hostmode PCI\n"); + #endif /* CONFIG_BCMA_DRIVER_PCI_HOSTMODE */ +- } else { +- bcma_core_pci_clientmode_init(pc); +- } + +- pc->setup_done = true; ++ if (!pc->hostmode) ++ bcma_core_pci_clientmode_init(pc); + } + + int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core, +--- a/drivers/bcma/driver_pci_host.c ++++ b/drivers/bcma/driver_pci_host.c +@@ -2,13 +2,587 @@ + * Broadcom specific AMBA + * PCI Core in hostmode + * ++ * Copyright 2005 - 2011, Broadcom Corporation ++ * Copyright 2006, 2007, Michael Buesch ++ * Copyright 2011, 2012, Hauke Mehrtens ++ * + * Licensed under the GNU/GPL. See COPYING for details. + */ + + #include "bcma_private.h" ++#include + #include ++#include ++ ++/* Probe a 32bit value on the bus and catch bus exceptions. ++ * Returns nonzero on a bus exception. ++ * This is MIPS specific */ ++#define mips_busprobe32(val, addr) get_dbe((val), ((u32 *)(addr))) ++ ++/* Assume one-hot slot wiring */ ++#define BCMA_PCI_SLOT_MAX 16 ++#define PCI_CONFIG_SPACE_SIZE 256 ++ ++bool __devinit bcma_core_pci_is_in_hostmode(struct bcma_drv_pci *pc) ++{ ++ struct bcma_bus *bus = pc->core->bus; ++ u16 chipid_top; ++ u32 tmp; ++ ++ chipid_top = (bus->chipinfo.id & 0xFF00); ++ if (chipid_top != 0x4700 && ++ chipid_top != 0x5300) ++ return false; ++ ++ if (bus->sprom.boardflags_lo & BCMA_CORE_PCI_BFL_NOPCI) { ++ pr_info("This PCI core is disabled and not working\n"); ++ return false; ++ } ++ ++ bcma_core_enable(pc->core, 0); ++ ++ return !mips_busprobe32(tmp, pc->core->io_addr); ++} ++ ++static u32 bcma_pcie_read_config(struct bcma_drv_pci *pc, u32 address) ++{ ++ pcicore_write32(pc, BCMA_CORE_PCI_CONFIG_ADDR, address); ++ pcicore_read32(pc, BCMA_CORE_PCI_CONFIG_ADDR); ++ return pcicore_read32(pc, BCMA_CORE_PCI_CONFIG_DATA); ++} ++ ++static void bcma_pcie_write_config(struct bcma_drv_pci *pc, u32 address, ++ u32 data) ++{ ++ pcicore_write32(pc, BCMA_CORE_PCI_CONFIG_ADDR, address); ++ pcicore_read32(pc, BCMA_CORE_PCI_CONFIG_ADDR); ++ pcicore_write32(pc, BCMA_CORE_PCI_CONFIG_DATA, data); ++} ++ ++static u32 bcma_get_cfgspace_addr(struct bcma_drv_pci *pc, unsigned int dev, ++ unsigned int func, unsigned int off) ++{ ++ u32 addr = 0; ++ ++ /* Issue config commands only when the data link is up (atleast ++ * one external pcie device is present). ++ */ ++ if (dev >= 2 || !(bcma_pcie_read(pc, BCMA_CORE_PCI_DLLP_LSREG) ++ & BCMA_CORE_PCI_DLLP_LSREG_LINKUP)) ++ goto out; ++ ++ /* Type 0 transaction */ ++ /* Slide the PCI window to the appropriate slot */ ++ pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI1, BCMA_CORE_PCI_SBTOPCI_CFG0); ++ /* Calculate the address */ ++ addr = pc->host_controller->host_cfg_addr; ++ addr |= (dev << BCMA_CORE_PCI_CFG_SLOT_SHIFT); ++ addr |= (func << BCMA_CORE_PCI_CFG_FUN_SHIFT); ++ addr |= (off & ~3); ++ ++out: ++ return addr; ++} ++ ++static int bcma_extpci_read_config(struct bcma_drv_pci *pc, unsigned int dev, ++ unsigned int func, unsigned int off, ++ void *buf, int len) ++{ ++ int err = -EINVAL; ++ u32 addr, val; ++ void __iomem *mmio = 0; ++ ++ WARN_ON(!pc->hostmode); ++ if (unlikely(len != 1 && len != 2 && len != 4)) ++ goto out; ++ if (dev == 0) { ++ /* we support only two functions on device 0 */ ++ if (func > 1) ++ return -EINVAL; ++ ++ /* accesses to config registers with offsets >= 256 ++ * requires indirect access. ++ */ ++ if (off >= PCI_CONFIG_SPACE_SIZE) { ++ addr = (func << 12); ++ addr |= (off & 0x0FFF); ++ val = bcma_pcie_read_config(pc, addr); ++ } else { ++ addr = BCMA_CORE_PCI_PCICFG0; ++ addr |= (func << 8); ++ addr |= (off & 0xfc); ++ val = pcicore_read32(pc, addr); ++ } ++ } else { ++ addr = bcma_get_cfgspace_addr(pc, dev, func, off); ++ if (unlikely(!addr)) ++ goto out; ++ err = -ENOMEM; ++ mmio = ioremap_nocache(addr, len); ++ if (!mmio) ++ goto out; ++ ++ if (mips_busprobe32(val, mmio)) { ++ val = 0xffffffff; ++ goto unmap; ++ } ++ ++ val = readl(mmio); ++ } ++ val >>= (8 * (off & 3)); ++ ++ switch (len) { ++ case 1: ++ *((u8 *)buf) = (u8)val; ++ break; ++ case 2: ++ *((u16 *)buf) = (u16)val; ++ break; ++ case 4: ++ *((u32 *)buf) = (u32)val; ++ break; ++ } ++ err = 0; ++unmap: ++ if (mmio) ++ iounmap(mmio); ++out: ++ return err; ++} ++ ++static int bcma_extpci_write_config(struct bcma_drv_pci *pc, unsigned int dev, ++ unsigned int func, unsigned int off, ++ const void *buf, int len) ++{ ++ int err = -EINVAL; ++ u32 addr = 0, val = 0; ++ void __iomem *mmio = 0; ++ u16 chipid = pc->core->bus->chipinfo.id; ++ ++ WARN_ON(!pc->hostmode); ++ if (unlikely(len != 1 && len != 2 && len != 4)) ++ goto out; ++ if (dev == 0) { ++ /* accesses to config registers with offsets >= 256 ++ * requires indirect access. ++ */ ++ if (off < PCI_CONFIG_SPACE_SIZE) { ++ addr = pc->core->addr + BCMA_CORE_PCI_PCICFG0; ++ addr |= (func << 8); ++ addr |= (off & 0xfc); ++ mmio = ioremap_nocache(addr, len); ++ if (!mmio) ++ goto out; ++ } ++ } else { ++ addr = bcma_get_cfgspace_addr(pc, dev, func, off); ++ if (unlikely(!addr)) ++ goto out; ++ err = -ENOMEM; ++ mmio = ioremap_nocache(addr, len); ++ if (!mmio) ++ goto out; ++ ++ if (mips_busprobe32(val, mmio)) { ++ val = 0xffffffff; ++ goto unmap; ++ } ++ } ++ ++ switch (len) { ++ case 1: ++ val = readl(mmio); ++ val &= ~(0xFF << (8 * (off & 3))); ++ val |= *((const u8 *)buf) << (8 * (off & 3)); ++ break; ++ case 2: ++ val = readl(mmio); ++ val &= ~(0xFFFF << (8 * (off & 3))); ++ val |= *((const u16 *)buf) << (8 * (off & 3)); ++ break; ++ case 4: ++ val = *((const u32 *)buf); ++ break; ++ } ++ if (dev == 0 && !addr) { ++ /* accesses to config registers with offsets >= 256 ++ * requires indirect access. ++ */ ++ addr = (func << 12); ++ addr |= (off & 0x0FFF); ++ bcma_pcie_write_config(pc, addr, val); ++ } else { ++ writel(val, mmio); ++ ++ if (chipid == 0x4716 || chipid == 0x4748) ++ readl(mmio); ++ } ++ ++ err = 0; ++unmap: ++ if (mmio) ++ iounmap(mmio); ++out: ++ return err; ++} ++ ++static int bcma_core_pci_hostmode_read_config(struct pci_bus *bus, ++ unsigned int devfn, ++ int reg, int size, u32 *val) ++{ ++ unsigned long flags; ++ int err; ++ struct bcma_drv_pci *pc; ++ struct bcma_drv_pci_host *pc_host; ++ ++ pc_host = container_of(bus->ops, struct bcma_drv_pci_host, pci_ops); ++ pc = pc_host->pdev; ++ ++ spin_lock_irqsave(&pc_host->cfgspace_lock, flags); ++ err = bcma_extpci_read_config(pc, PCI_SLOT(devfn), ++ PCI_FUNC(devfn), reg, val, size); ++ spin_unlock_irqrestore(&pc_host->cfgspace_lock, flags); ++ ++ return err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; ++} ++ ++static int bcma_core_pci_hostmode_write_config(struct pci_bus *bus, ++ unsigned int devfn, ++ int reg, int size, u32 val) ++{ ++ unsigned long flags; ++ int err; ++ struct bcma_drv_pci *pc; ++ struct bcma_drv_pci_host *pc_host; ++ ++ pc_host = container_of(bus->ops, struct bcma_drv_pci_host, pci_ops); ++ pc = pc_host->pdev; ++ ++ spin_lock_irqsave(&pc_host->cfgspace_lock, flags); ++ err = bcma_extpci_write_config(pc, PCI_SLOT(devfn), ++ PCI_FUNC(devfn), reg, &val, size); ++ spin_unlock_irqrestore(&pc_host->cfgspace_lock, flags); ++ ++ return err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; ++} ++ ++/* return cap_offset if requested capability exists in the PCI config space */ ++static u8 __devinit bcma_find_pci_capability(struct bcma_drv_pci *pc, ++ unsigned int dev, ++ unsigned int func, u8 req_cap_id, ++ unsigned char *buf, u32 *buflen) ++{ ++ u8 cap_id; ++ u8 cap_ptr = 0; ++ u32 bufsize; ++ u8 byte_val; ++ ++ /* check for Header type 0 */ ++ bcma_extpci_read_config(pc, dev, func, PCI_HEADER_TYPE, &byte_val, ++ sizeof(u8)); ++ if ((byte_val & 0x7f) != PCI_HEADER_TYPE_NORMAL) ++ return cap_ptr; ++ ++ /* check if the capability pointer field exists */ ++ bcma_extpci_read_config(pc, dev, func, PCI_STATUS, &byte_val, ++ sizeof(u8)); ++ if (!(byte_val & PCI_STATUS_CAP_LIST)) ++ return cap_ptr; ++ ++ /* check if the capability pointer is 0x00 */ ++ bcma_extpci_read_config(pc, dev, func, PCI_CAPABILITY_LIST, &cap_ptr, ++ sizeof(u8)); ++ if (cap_ptr == 0x00) ++ return cap_ptr; ++ ++ /* loop thr'u the capability list and see if the requested capabilty ++ * exists */ ++ bcma_extpci_read_config(pc, dev, func, cap_ptr, &cap_id, sizeof(u8)); ++ while (cap_id != req_cap_id) { ++ bcma_extpci_read_config(pc, dev, func, cap_ptr + 1, &cap_ptr, ++ sizeof(u8)); ++ if (cap_ptr == 0x00) ++ return cap_ptr; ++ bcma_extpci_read_config(pc, dev, func, cap_ptr, &cap_id, ++ sizeof(u8)); ++ } ++ ++ /* found the caller requested capability */ ++ if ((buf != NULL) && (buflen != NULL)) { ++ u8 cap_data; ++ ++ bufsize = *buflen; ++ if (!bufsize) ++ return cap_ptr; ++ ++ *buflen = 0; ++ ++ /* copy the cpability data excluding cap ID and next ptr */ ++ cap_data = cap_ptr + 2; ++ if ((bufsize + cap_data) > PCI_CONFIG_SPACE_SIZE) ++ bufsize = PCI_CONFIG_SPACE_SIZE - cap_data; ++ *buflen = bufsize; ++ while (bufsize--) { ++ bcma_extpci_read_config(pc, dev, func, cap_data, buf, ++ sizeof(u8)); ++ cap_data++; ++ buf++; ++ } ++ } ++ ++ return cap_ptr; ++} ++ ++/* If the root port is capable of returning Config Request ++ * Retry Status (CRS) Completion Status to software then ++ * enable the feature. ++ */ ++static void __devinit bcma_core_pci_enable_crs(struct bcma_drv_pci *pc) ++{ ++ u8 cap_ptr, root_ctrl, root_cap, dev; ++ u16 val16; ++ int i; ++ ++ cap_ptr = bcma_find_pci_capability(pc, 0, 0, PCI_CAP_ID_EXP, NULL, ++ NULL); ++ root_cap = cap_ptr + PCI_EXP_RTCAP; ++ bcma_extpci_read_config(pc, 0, 0, root_cap, &val16, sizeof(u16)); ++ if (val16 & BCMA_CORE_PCI_RC_CRS_VISIBILITY) { ++ /* Enable CRS software visibility */ ++ root_ctrl = cap_ptr + PCI_EXP_RTCTL; ++ val16 = PCI_EXP_RTCTL_CRSSVE; ++ bcma_extpci_read_config(pc, 0, 0, root_ctrl, &val16, ++ sizeof(u16)); ++ ++ /* Initiate a configuration request to read the vendor id ++ * field of the device function's config space header after ++ * 100 ms wait time from the end of Reset. If the device is ++ * not done with its internal initialization, it must at ++ * least return a completion TLP, with a completion status ++ * of "Configuration Request Retry Status (CRS)". The root ++ * complex must complete the request to the host by returning ++ * a read-data value of 0001h for the Vendor ID field and ++ * all 1s for any additional bytes included in the request. ++ * Poll using the config reads for max wait time of 1 sec or ++ * until we receive the successful completion status. Repeat ++ * the procedure for all the devices. ++ */ ++ for (dev = 1; dev < BCMA_PCI_SLOT_MAX; dev++) { ++ for (i = 0; i < 100000; i++) { ++ bcma_extpci_read_config(pc, dev, 0, ++ PCI_VENDOR_ID, &val16, ++ sizeof(val16)); ++ if (val16 != 0x1) ++ break; ++ udelay(10); ++ } ++ if (val16 == 0x1) ++ pr_err("PCI: Broken device in slot %d\n", dev); ++ } ++ } ++} + + void __devinit bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc) + { +- pr_err("No support for PCI core in hostmode yet\n"); ++ struct bcma_bus *bus = pc->core->bus; ++ struct bcma_drv_pci_host *pc_host; ++ u32 tmp; ++ u32 pci_membase_1G; ++ unsigned long io_map_base; ++ ++ pr_info("PCIEcore in host mode found\n"); ++ ++ pc_host = kzalloc(sizeof(*pc_host), GFP_KERNEL); ++ if (!pc_host) { ++ pr_err("can not allocate memory"); ++ return; ++ } ++ ++ pc->host_controller = pc_host; ++ pc_host->pci_controller.io_resource = &pc_host->io_resource; ++ pc_host->pci_controller.mem_resource = &pc_host->mem_resource; ++ pc_host->pci_controller.pci_ops = &pc_host->pci_ops; ++ pc_host->pdev = pc; ++ ++ pci_membase_1G = BCMA_SOC_PCI_DMA; ++ pc_host->host_cfg_addr = BCMA_SOC_PCI_CFG; ++ ++ pc_host->pci_ops.read = bcma_core_pci_hostmode_read_config; ++ pc_host->pci_ops.write = bcma_core_pci_hostmode_write_config; ++ ++ pc_host->mem_resource.name = "BCMA PCIcore external memory", ++ pc_host->mem_resource.start = BCMA_SOC_PCI_DMA; ++ pc_host->mem_resource.end = BCMA_SOC_PCI_DMA + BCMA_SOC_PCI_DMA_SZ - 1; ++ pc_host->mem_resource.flags = IORESOURCE_MEM | IORESOURCE_PCI_FIXED; ++ ++ pc_host->io_resource.name = "BCMA PCIcore external I/O", ++ pc_host->io_resource.start = 0x100; ++ pc_host->io_resource.end = 0x7FF; ++ pc_host->io_resource.flags = IORESOURCE_IO | IORESOURCE_PCI_FIXED; ++ ++ /* Reset RC */ ++ udelay(3000); ++ pcicore_write32(pc, BCMA_CORE_PCI_CTL, BCMA_CORE_PCI_CTL_RST_OE); ++ udelay(1000); ++ pcicore_write32(pc, BCMA_CORE_PCI_CTL, BCMA_CORE_PCI_CTL_RST | ++ BCMA_CORE_PCI_CTL_RST_OE); ++ ++ /* 64 MB I/O access window. On 4716, use ++ * sbtopcie0 to access the device registers. We ++ * can't use address match 2 (1 GB window) region ++ * as mips can't generate 64-bit address on the ++ * backplane. ++ */ ++ if (bus->chipinfo.id == 0x4716 || bus->chipinfo.id == 0x4748) { ++ pc_host->mem_resource.start = BCMA_SOC_PCI_MEM; ++ pc_host->mem_resource.end = BCMA_SOC_PCI_MEM + ++ BCMA_SOC_PCI_MEM_SZ - 1; ++ pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI0, ++ BCMA_CORE_PCI_SBTOPCI_MEM | BCMA_SOC_PCI_MEM); ++ } else if (bus->chipinfo.id == 0x5300) { ++ tmp = BCMA_CORE_PCI_SBTOPCI_MEM; ++ tmp |= BCMA_CORE_PCI_SBTOPCI_PREF; ++ tmp |= BCMA_CORE_PCI_SBTOPCI_BURST; ++ if (pc->core->core_unit == 0) { ++ pc_host->mem_resource.start = BCMA_SOC_PCI_MEM; ++ pc_host->mem_resource.end = BCMA_SOC_PCI_MEM + ++ BCMA_SOC_PCI_MEM_SZ - 1; ++ pci_membase_1G = BCMA_SOC_PCIE_DMA_H32; ++ pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI0, ++ tmp | BCMA_SOC_PCI_MEM); ++ } else if (pc->core->core_unit == 1) { ++ pc_host->mem_resource.start = BCMA_SOC_PCI1_MEM; ++ pc_host->mem_resource.end = BCMA_SOC_PCI1_MEM + ++ BCMA_SOC_PCI_MEM_SZ - 1; ++ pci_membase_1G = BCMA_SOC_PCIE1_DMA_H32; ++ pc_host->host_cfg_addr = BCMA_SOC_PCI1_CFG; ++ pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI0, ++ tmp | BCMA_SOC_PCI1_MEM); ++ } ++ } else ++ pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI0, ++ BCMA_CORE_PCI_SBTOPCI_IO); ++ ++ /* 64 MB configuration access window */ ++ pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI1, BCMA_CORE_PCI_SBTOPCI_CFG0); ++ ++ /* 1 GB memory access window */ ++ pcicore_write32(pc, BCMA_CORE_PCI_SBTOPCI2, ++ BCMA_CORE_PCI_SBTOPCI_MEM | pci_membase_1G); ++ ++ ++ /* As per PCI Express Base Spec 1.1 we need to wait for ++ * at least 100 ms from the end of a reset (cold/warm/hot) ++ * before issuing configuration requests to PCI Express ++ * devices. ++ */ ++ udelay(100000); ++ ++ bcma_core_pci_enable_crs(pc); ++ ++ /* Enable PCI bridge BAR0 memory & master access */ ++ tmp = PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; ++ bcma_extpci_write_config(pc, 0, 0, PCI_COMMAND, &tmp, sizeof(tmp)); ++ ++ /* Enable PCI interrupts */ ++ pcicore_write32(pc, BCMA_CORE_PCI_IMASK, BCMA_CORE_PCI_IMASK_INTA); ++ ++ /* Ok, ready to run, register it to the system. ++ * The following needs change, if we want to port hostmode ++ * to non-MIPS platform. */ ++ io_map_base = (unsigned long)ioremap_nocache(BCMA_SOC_PCI_MEM, ++ 0x04000000); ++ pc_host->pci_controller.io_map_base = io_map_base; ++ set_io_port_base(pc_host->pci_controller.io_map_base); ++ /* Give some time to the PCI controller to configure itself with the new ++ * values. Not waiting at this point causes crashes of the machine. */ ++ mdelay(10); ++ register_pci_controller(&pc_host->pci_controller); ++ return; ++} ++ ++/* Early PCI fixup for a device on the PCI-core bridge. */ ++static void bcma_core_pci_fixup_pcibridge(struct pci_dev *dev) ++{ ++ if (dev->bus->ops->read != bcma_core_pci_hostmode_read_config) { ++ /* This is not a device on the PCI-core bridge. */ ++ return; ++ } ++ if (PCI_SLOT(dev->devfn) != 0) ++ return; ++ ++ pr_info("PCI: Fixing up bridge %s\n", pci_name(dev)); ++ ++ /* Enable PCI bridge bus mastering and memory space */ ++ pci_set_master(dev); ++ if (pcibios_enable_device(dev, ~0) < 0) { ++ pr_err("PCI: BCMA bridge enable failed\n"); ++ return; ++ } ++ ++ /* Enable PCI bridge BAR1 prefetch and burst */ ++ pci_write_config_dword(dev, BCMA_PCI_BAR1_CONTROL, 3); ++} ++DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, bcma_core_pci_fixup_pcibridge); ++ ++/* Early PCI fixup for all PCI-cores to set the correct memory address. */ ++static void bcma_core_pci_fixup_addresses(struct pci_dev *dev) ++{ ++ struct resource *res; ++ int pos; ++ ++ if (dev->bus->ops->read != bcma_core_pci_hostmode_read_config) { ++ /* This is not a device on the PCI-core bridge. */ ++ return; ++ } ++ if (PCI_SLOT(dev->devfn) == 0) ++ return; ++ ++ pr_info("PCI: Fixing up addresses %s\n", pci_name(dev)); ++ ++ for (pos = 0; pos < 6; pos++) { ++ res = &dev->resource[pos]; ++ if (res->flags & (IORESOURCE_IO | IORESOURCE_MEM)) ++ pci_assign_resource(dev, pos); ++ } ++} ++DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, bcma_core_pci_fixup_addresses); ++ ++/* This function is called when doing a pci_enable_device(). ++ * We must first check if the device is a device on the PCI-core bridge. */ ++int bcma_core_pci_plat_dev_init(struct pci_dev *dev) ++{ ++ struct bcma_drv_pci_host *pc_host; ++ ++ if (dev->bus->ops->read != bcma_core_pci_hostmode_read_config) { ++ /* This is not a device on the PCI-core bridge. */ ++ return -ENODEV; ++ } ++ pc_host = container_of(dev->bus->ops, struct bcma_drv_pci_host, ++ pci_ops); ++ ++ pr_info("PCI: Fixing up device %s\n", pci_name(dev)); ++ ++ /* Fix up interrupt lines */ ++ dev->irq = bcma_core_mips_irq(pc_host->pdev->core) + 2; ++ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); ++ ++ return 0; ++} ++EXPORT_SYMBOL(bcma_core_pci_plat_dev_init); ++ ++/* PCI device IRQ mapping. */ ++int bcma_core_pci_pcibios_map_irq(const struct pci_dev *dev) ++{ ++ struct bcma_drv_pci_host *pc_host; ++ ++ if (dev->bus->ops->read != bcma_core_pci_hostmode_read_config) { ++ /* This is not a device on the PCI-core bridge. */ ++ return -ENODEV; ++ } ++ ++ pc_host = container_of(dev->bus->ops, struct bcma_drv_pci_host, ++ pci_ops); ++ return bcma_core_mips_irq(pc_host->pdev->core) + 2; + } ++EXPORT_SYMBOL(bcma_core_pci_pcibios_map_irq); +--- a/include/linux/bcma/bcma_driver_pci.h ++++ b/include/linux/bcma/bcma_driver_pci.h +@@ -160,9 +160,40 @@ struct pci_dev; + /* PCIcore specific boardflags */ + #define BCMA_CORE_PCI_BFL_NOPCI 0x00000400 /* Board leaves PCI floating */ + ++/* PCIE Config space accessing MACROS */ ++#define BCMA_CORE_PCI_CFG_BUS_SHIFT 24 /* Bus shift */ ++#define BCMA_CORE_PCI_CFG_SLOT_SHIFT 19 /* Slot/Device shift */ ++#define BCMA_CORE_PCI_CFG_FUN_SHIFT 16 /* Function shift */ ++#define BCMA_CORE_PCI_CFG_OFF_SHIFT 0 /* Register shift */ ++ ++#define BCMA_CORE_PCI_CFG_BUS_MASK 0xff /* Bus mask */ ++#define BCMA_CORE_PCI_CFG_SLOT_MASK 0x1f /* Slot/Device mask */ ++#define BCMA_CORE_PCI_CFG_FUN_MASK 7 /* Function mask */ ++#define BCMA_CORE_PCI_CFG_OFF_MASK 0xfff /* Register mask */ ++ ++/* PCIE Root Capability Register bits (Host mode only) */ ++#define BCMA_CORE_PCI_RC_CRS_VISIBILITY 0x0001 ++ ++struct bcma_drv_pci; ++ ++struct bcma_drv_pci_host { ++ struct bcma_drv_pci *pdev; ++ ++ u32 host_cfg_addr; ++ spinlock_t cfgspace_lock; ++ ++ struct pci_controller pci_controller; ++ struct pci_ops pci_ops; ++ struct resource mem_resource; ++ struct resource io_resource; ++}; ++ + struct bcma_drv_pci { + struct bcma_device *core; + u8 setup_done:1; ++ u8 hostmode:1; ++ ++ struct bcma_drv_pci_host *host_controller; + }; + + /* Register access */ +@@ -173,4 +204,7 @@ extern void __devinit bcma_core_pci_init + extern int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, + struct bcma_device *core, bool enable); + ++extern int bcma_core_pci_pcibios_map_irq(const struct pci_dev *dev); ++extern int bcma_core_pci_plat_dev_init(struct pci_dev *dev); ++ + #endif /* LINUX_BCMA_DRIVER_PCI_H_ */ +--- a/include/linux/bcma/bcma_regs.h ++++ b/include/linux/bcma/bcma_regs.h +@@ -56,4 +56,31 @@ + #define BCMA_PCI_GPIO_XTAL 0x40 /* PCI config space GPIO 14 for Xtal powerup */ + #define BCMA_PCI_GPIO_PLL 0x80 /* PCI config space GPIO 15 for PLL powerdown */ + ++/* SiliconBackplane Address Map. ++ * All regions may not exist on all chips. ++ */ ++#define BCMA_SOC_SDRAM_BASE 0x00000000U /* Physical SDRAM */ ++#define BCMA_SOC_PCI_MEM 0x08000000U /* Host Mode sb2pcitranslation0 (64 MB) */ ++#define BCMA_SOC_PCI_MEM_SZ (64 * 1024 * 1024) ++#define BCMA_SOC_PCI_CFG 0x0c000000U /* Host Mode sb2pcitranslation1 (64 MB) */ ++#define BCMA_SOC_SDRAM_SWAPPED 0x10000000U /* Byteswapped Physical SDRAM */ ++#define BCMA_SOC_SDRAM_R2 0x80000000U /* Region 2 for sdram (512 MB) */ ++ ++ ++#define BCMA_SOC_PCI_DMA 0x40000000U /* Client Mode sb2pcitranslation2 (1 GB) */ ++#define BCMA_SOC_PCI_DMA2 0x80000000U /* Client Mode sb2pcitranslation2 (1 GB) */ ++#define BCMA_SOC_PCI_DMA_SZ 0x40000000U /* Client Mode sb2pcitranslation2 size in bytes */ ++#define BCMA_SOC_PCIE_DMA_L32 0x00000000U /* PCIE Client Mode sb2pcitranslation2 ++ * (2 ZettaBytes), low 32 bits ++ */ ++#define BCMA_SOC_PCIE_DMA_H32 0x80000000U /* PCIE Client Mode sb2pcitranslation2 ++ * (2 ZettaBytes), high 32 bits ++ */ ++ ++#define BCMA_SOC_PCI1_MEM 0x40000000U /* Host Mode sb2pcitranslation0 (64 MB) */ ++#define BCMA_SOC_PCI1_CFG 0x44000000U /* Host Mode sb2pcitranslation1 (64 MB) */ ++#define BCMA_SOC_PCIE1_DMA_H32 0xc0000000U /* PCIE Client Mode sb2pcitranslation2 ++ * (2 ZettaBytes), high 32 bits ++ */ ++ + #endif /* LINUX_BCMA_REGS_H_ */ -- cgit v1.2.3