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Diffstat (limited to 'target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch')
-rw-r--r--target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch845
1 files changed, 845 insertions, 0 deletions
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
new file mode 100644
index 0000000..2afd09a
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.2/044-bcma-add-PCIe-host-controller.patch
@@ -0,0 +1,845 @@
+From 47d0e8c2743729b4248585d33b55b6aaeac008d5 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+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 <hauke@hauke-m.de>
+---
+ 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 <linux/types.h>
+ #include <linux/pci.h>
+ #include <linux/ssb/ssb.h>
++#include <linux/bcma/bcma.h>
+ #include <bcm47xx.h>
+
+ 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 <m@bues.ch>
+ * Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de>
+ *
+@@ -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 <m@bues.ch>
++ * Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de>
++ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+ #include "bcma_private.h"
++#include <linux/export.h>
+ #include <linux/bcma/bcma.h>
++#include <asm/paccess.h>
++
++/* 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_ */
generated by cgit v1.1 at 2024-12-11 07:56:38 +0000