From 4ad28d6429b7393334334d5cd46eeb88290e12f2 Mon Sep 17 00:00:00 2001 From: hauke Date: Fri, 13 Apr 2012 19:35:40 +0000 Subject: kernel: update bcma and ssb to version master-2012-04-12 from wireless-testing git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31278 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../044-bcma-add-PCIe-host-controller.patch | 769 --------------------- 1 file changed, 769 deletions(-) (limited to 'target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch') diff --git a/target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch b/target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch index 850b52428..e5740693f 100644 --- a/target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch +++ b/target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch @@ -1,23 +1,3 @@ -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 @@ @@ -94,752 +74,3 @@ Signed-off-by: Hauke Mehrtens +#endif + return 0; +} ---- a/drivers/bcma/bcma_private.h -+++ b/drivers/bcma/bcma_private.h -@@ -60,6 +60,7 @@ 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