path: root/target/linux/brcm63xx-2.6/patches/002-pci_bcm96348.patch

diff -Naurp linux-2.6.16.7-generic-patched/arch/mips/pci/Makefile linux-2.6.16.7-patched/arch/mips/pci/Makefile
--- linux-2.6.16.7-generic-patched/arch/mips/pci/Makefile	2006-04-17 23:53:25.000000000 +0200
+++ linux-2.6.16.7-patched/arch/mips/pci/Makefile	2006-07-05 15:21:58.000000000 +0200
@@ -18,6 +18,7 @@ obj-$(CONFIG_MIPS_NILE4)	+= ops-nile4.o
 obj-$(CONFIG_MIPS_TX3927)	+= ops-tx3927.o
 obj-$(CONFIG_PCI_VR41XX)	+= ops-vr41xx.o pci-vr41xx.o
 obj-$(CONFIG_NEC_CMBVR4133)	+= fixup-vr4133.o
+obj-$(CONFIG_BCM_PCI)		+= fixup-bcm96348.o pci-bcm96348.o ops-bcm96348.o
 
 #
 # These are still pretty much in the old state, watch, go blind.
diff -Naurp linux-2.6.16.7-generic-patched/arch/mips/pci/fixup-bcm96348.c linux-2.6.16.7-patched/arch/mips/pci/fixup-bcm96348.c
--- linux-2.6.16.7-generic-patched/arch/mips/pci/fixup-bcm96348.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16.7-patched/arch/mips/pci/fixup-bcm96348.c	2006-07-05 15:21:58.000000000 +0200
@@ -0,0 +1,85 @@
+/*
+<:copyright-gpl 
+ Copyright 2002 Broadcom Corp. All Rights Reserved. 
+ 
+ This program is free software; you can distribute it and/or modify it 
+ under the terms of the GNU General Public License (Version 2) as 
+ published by the Free Software Foundation. 
+ 
+ This program is distributed in the hope it will be useful, but WITHOUT 
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+ for more details. 
+ 
+ You should have received a copy of the GNU General Public License along 
+ with this program; if not, write to the Free Software Foundation, Inc., 
+ 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. 
+:>
+*/
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+
+#include <bcmpci.h>
+#include <bcm_intr.h>
+#include <bcm_map_part.h>
+
+static volatile MpiRegisters * mpi = (MpiRegisters *)(MPI_BASE);
+
+static char irq_tab_bcm96348[] __initdata = {
+    [0] = INTERRUPT_ID_MPI,
+    [1] = INTERRUPT_ID_MPI,
+#if defined(CONFIG_USB)
+    [USB_HOST_SLOT] = INTERRUPT_ID_USBH
+#endif
+};
+
+int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+    return irq_tab_bcm96348[slot];
+}
+
+static void bcm96348_fixup(struct pci_dev *dev)
+{
+    uint32 memaddr;
+    uint32 size;
+
+    memaddr = pci_resource_start(dev, 0);
+    size = pci_resource_len(dev, 0);
+
+    switch (PCI_SLOT(dev->devfn)) {
+        case 0:
+            // UBUS to PCI address range
+            // Memory Window 1. Mask determines which bits are decoded.
+            mpi->l2pmrange1 = ~(size-1);
+            // UBUS to PCI Memory base address. This is akin to the ChipSelect base
+            // register. 
+            mpi->l2pmbase1 = memaddr & BCM_PCI_ADDR_MASK;
+            // UBUS to PCI Remap Address. Replaces the masked address bits in the
+            // range register with this setting. 
+            // Also, enable direct I/O and direct Memory accesses
+            mpi->l2pmremap1 = (memaddr | MEM_WINDOW_EN);
+            break;
+
+        case 1:
+            // Memory Window 2
+            mpi->l2pmrange2 = ~(size-1);
+            // UBUS to PCI Memory base address. 
+            mpi->l2pmbase2 = memaddr & BCM_PCI_ADDR_MASK;
+            // UBUS to PCI Remap Address
+            mpi->l2pmremap2 = (memaddr | MEM_WINDOW_EN);
+            break;
+
+#if defined(CONFIG_USB)
+        case USB_HOST_SLOT:
+            dev->resource[0].start = USB_HOST_BASE;
+            dev->resource[0].end = USB_HOST_BASE+USB_BAR0_MEM_SIZE-1;
+            break;
+#endif
+    }
+}
+
+struct pci_fixup pcibios_fixups[] = {
+    { PCI_FIXUP_FINAL, PCI_ANY_ID, PCI_ANY_ID, bcm96348_fixup },
+    {0}
+};
diff -Naurp linux-2.6.16.7-generic-patched/arch/mips/pci/ops-bcm96348.c linux-2.6.16.7-patched/arch/mips/pci/ops-bcm96348.c
--- linux-2.6.16.7-generic-patched/arch/mips/pci/ops-bcm96348.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16.7-patched/arch/mips/pci/ops-bcm96348.c	2006-07-05 15:21:58.000000000 +0200
@@ -0,0 +1,276 @@
+/*
+<:copyright-gpl 
+ Copyright 2002 Broadcom Corp. All Rights Reserved. 
+ 
+ This program is free software; you can distribute it and/or modify it 
+ under the terms of the GNU General Public License (Version 2) as 
+ published by the Free Software Foundation. 
+ 
+ This program is distributed in the hope it will be useful, but WITHOUT 
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+ for more details. 
+ 
+ You should have received a copy of the GNU General Public License along 
+ with this program; if not, write to the Free Software Foundation, Inc., 
+ 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. 
+:>
+*/
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/addrspace.h>
+
+#include <bcm_intr.h>
+#include <bcm_map_part.h>
+#include <bcmpci.h>
+
+#include <linux/delay.h>
+
+#if defined(CONFIG_USB)
+#if 0
+#define DPRINT(x...)        printk(x)
+#else
+#define DPRINT(x...)
+#endif
+
+static int 
+pci63xx_int_read(unsigned int devfn, int where, u32 * value, int size);
+static int 
+pci63xx_int_write(unsigned int devfn, int where, u32 * value, int size);
+
+static bool usb_mem_size_rd = FALSE;
+static uint32 usb_mem_base = 0;
+static uint32 usb_cfg_space_cmd_reg = 0;
+#endif
+static bool pci_mem_size_rd = FALSE;
+
+static volatile MpiRegisters * mpi = (MpiRegisters *)(MPI_BASE);
+
+static void mpi_SetupPciConfigAccess(uint32 addr)
+{
+    mpi->l2pcfgctl = (DIR_CFG_SEL | DIR_CFG_USEREG | addr) & ~CONFIG_TYPE;
+}
+
+static void mpi_ClearPciConfigAccess(void)
+{
+    mpi->l2pcfgctl = 0x00000000;
+}
+
+#if defined(CONFIG_USB)
+/* --------------------------------------------------------------------------
+    Name: pci63xx_int_write
+Abstract: PCI Config write on internal device(s)
+ -------------------------------------------------------------------------- */
+static int 
+pci63xx_int_write(unsigned int devfn, int where, u32 * value, int size)
+{
+    if (PCI_SLOT(devfn) != USB_HOST_SLOT) {
+        return PCIBIOS_SUCCESSFUL;
+    }
+
+    switch (size) {
+        case 1:
+            DPRINT("W => Slot: %d Where: %2X Len: %d Data: %02X\n", 
+                PCI_SLOT(devfn), where, size, *value);
+            break;
+        case 2:
+            DPRINT("W => Slot: %d Where: %2X Len: %d Data: %04X\n", 
+                PCI_SLOT(devfn), where, size, *value);
+            switch (where) {
+                case PCI_COMMAND:
+                    usb_cfg_space_cmd_reg = *value;
+                    break;
+                default:
+                    break;
+            }
+            break;
+        case 4:
+            DPRINT("W => Slot: %d Where: %2X Len: %d Data: %08lX\n", 
+                PCI_SLOT(devfn), where, size, *value);
+            switch (where) {
+                case PCI_BASE_ADDRESS_0:
+                    if (*value == 0xffffffff) {
+                        usb_mem_size_rd = TRUE;
+                    } else {
+                        usb_mem_base = *value;
+                    }
+                    break;
+                default:
+                    break;
+            }
+            break;
+        default:
+            break;
+    }
+
+    return PCIBIOS_SUCCESSFUL;
+}
+
+/* --------------------------------------------------------------------------
+    Name: pci63xx_int_read
+Abstract: PCI Config read on internal device(s)
+ -------------------------------------------------------------------------- */
+static int 
+pci63xx_int_read(unsigned int devfn, int where, u32 * value, int size)
+{
+    uint32 retValue = 0xFFFFFFFF;
+
+    if (PCI_SLOT(devfn) != USB_HOST_SLOT) {
+        return PCIBIOS_SUCCESSFUL;
+    }
+
+    // For now, this is specific to the USB Host controller. We can
+    // make it more general if we have to...
+    // Emulate PCI Config accesses
+    switch (where) {
+        case PCI_VENDOR_ID:     
+        case PCI_DEVICE_ID:
+            retValue = PCI_VENDOR_ID_BROADCOM | 0x63000000;
+            break;
+        case PCI_COMMAND:
+        case PCI_STATUS:
+            retValue = (0x0006 << 16) | usb_cfg_space_cmd_reg;
+            break;
+        case PCI_CLASS_REVISION:
+        case PCI_CLASS_DEVICE:
+            retValue = (PCI_CLASS_SERIAL_USB << 16) | (0x10 << 8) | 0x01;
+            break;
+        case PCI_BASE_ADDRESS_0:
+            if (usb_mem_size_rd) {
+                retValue = USB_BAR0_MEM_SIZE;
+            } else {
+                if (usb_mem_base != 0)
+                    retValue = usb_mem_base;
+                else
+                    retValue = USB_HOST_BASE;
+            }
+            usb_mem_size_rd = FALSE;
+            break;
+        case PCI_CACHE_LINE_SIZE:
+        case PCI_LATENCY_TIMER:
+            retValue = 0;
+            break;
+        case PCI_HEADER_TYPE:
+            retValue = PCI_HEADER_TYPE_NORMAL;
+            break;
+        case PCI_SUBSYSTEM_VENDOR_ID:
+            retValue = PCI_VENDOR_ID_BROADCOM;
+            break;
+        case PCI_SUBSYSTEM_ID:
+            retValue = 0x6300;
+            break;
+        case PCI_INTERRUPT_LINE:
+            retValue = INTERRUPT_ID_USBH; 
+            break;
+        default:
+            break;
+    }
+
+    switch (size) {
+        case 1:
+            *value = (retValue >> ((where & 3) << 3)) & 0xff;
+            DPRINT("R <= Slot: %d Where: %2X Len: %d Data: %02X\n", 
+                PCI_SLOT(devfn), where, size, *value);
+            break;
+        case 2:
+            *value = (retValue >> ((where & 3) << 3)) & 0xffff;
+            DPRINT("R <= Slot: %d Where: %2X Len: %d Data: %04X\n", 
+                PCI_SLOT(devfn), where, size, *value);
+            break;
+        case 4:
+            *value = retValue;
+            DPRINT("R <= Slot: %d Where: %2X Len: %d Data: %08lX\n", 
+                PCI_SLOT(devfn), where, size, *value);
+            break;
+        default:
+            break;
+    }
+
+    return PCIBIOS_SUCCESSFUL;
+}
+#endif
+
+static int bcm96348_pcibios_read(struct pci_bus *bus, unsigned int devfn,
+	int where, int size, u32 * val)
+{
+    volatile unsigned char *ioBase = (unsigned char *)(mpi->l2piobase | KSEG1);
+    uint32 data;
+
+#if defined(CONFIG_USB)
+    if (PCI_SLOT(devfn) == USB_HOST_SLOT)
+        return pci63xx_int_read(devfn, where, val, size);
+#endif
+
+    mpi_SetupPciConfigAccess(BCM_PCI_CFG(PCI_SLOT(devfn), PCI_FUNC(devfn), where));
+    data = *(uint32 *)ioBase;
+    switch(size) {
+        case 1:
+            *val = (data >> ((where & 3) << 3)) & 0xff;
+            break;
+        case 2:
+            *val = (data >> ((where & 3) << 3)) & 0xffff;
+            break;
+        case 4:
+            *val = data;
+             /* Special case for reading PCI device range */
+            if ((where >= PCI_BASE_ADDRESS_0) && (where <= PCI_BASE_ADDRESS_5)) {
+                if (pci_mem_size_rd) {
+                    /* bcm6348 PCI memory window minimum size is 64K */
+                    *val &= PCI_SIZE_64K;
+                }
+            }
+            break;
+        default:
+            break;
+    }
+    pci_mem_size_rd = FALSE;
+    mpi_ClearPciConfigAccess();
+
+    return PCIBIOS_SUCCESSFUL;
+}
+
+static int bcm96348_pcibios_write(struct pci_bus *bus, unsigned int devfn,
+	int where, int size, u32 val)
+{
+    volatile unsigned char *ioBase = (unsigned char *)(mpi->l2piobase | KSEG1);
+    uint32 data;
+
+#if defined(CONFIG_USB)
+    if (PCI_SLOT(devfn) == USB_HOST_SLOT)
+        return pci63xx_int_write(devfn, where, &val, size);
+#endif
+    mpi_SetupPciConfigAccess(BCM_PCI_CFG(PCI_SLOT(devfn), PCI_FUNC(devfn), where));
+    data = *(uint32 *)ioBase;
+    switch(size) {
+        case 1:
+            data = (data & ~(0xff << ((where & 3) << 3))) |
+                (val << ((where & 3) << 3));
+            break;
+        case 2:
+            data = (data & ~(0xffff << ((where & 3) << 3))) |
+                (val << ((where & 3) << 3));
+            break;
+        case 4:
+            data = val;
+            /* Special case for reading PCI device range */
+            if ((where >= PCI_BASE_ADDRESS_0) && (where <= PCI_BASE_ADDRESS_5)) {
+                if (val == 0xffffffff)
+                    pci_mem_size_rd = TRUE;
+            }
+            break;
+        default:
+            break;
+    }
+    *(uint32 *)ioBase = data;
+    udelay(500);
+    mpi_ClearPciConfigAccess();
+
+    return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops bcm96348_pci_ops = {
+    .read   = bcm96348_pcibios_read,
+    .write  = bcm96348_pcibios_write
+};
diff -Naurp linux-2.6.16.7-generic-patched/arch/mips/pci/pci-bcm96348.c linux-2.6.16.7-patched/arch/mips/pci/pci-bcm96348.c
--- linux-2.6.16.7-generic-patched/arch/mips/pci/pci-bcm96348.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16.7-patched/arch/mips/pci/pci-bcm96348.c	2006-07-05 15:21:58.000000000 +0200
@@ -0,0 +1,54 @@
+/*
+<:copyright-gpl 
+ Copyright 2002 Broadcom Corp. All Rights Reserved. 
+ 
+ This program is free software; you can distribute it and/or modify it 
+ under the terms of the GNU General Public License (Version 2) as 
+ published by the Free Software Foundation. 
+ 
+ This program is distributed in the hope it will be useful, but WITHOUT 
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License 
+ for more details. 
+ 
+ You should have received a copy of the GNU General Public License along 
+ with this program; if not, write to the Free Software Foundation, Inc., 
+ 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. 
+:>
+*/
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/pci_channel.h>
+#include <bcmpci.h>
+
+static struct resource bcm_pci_io_resource = {
+    .name   = "bcm96348 pci IO space",
+    .start  = BCM_PCI_IO_BASE,
+    .end    = BCM_PCI_IO_BASE + BCM_PCI_IO_SIZE_64KB - 1,
+    .flags  = IORESOURCE_IO
+};
+
+static struct resource bcm_pci_mem_resource = {
+    .name   = "bcm96348 pci memory space",
+    .start  = BCM_PCI_MEM_BASE,
+    .end    = BCM_PCI_MEM_BASE + BCM_PCI_MEM_SIZE_16MB - 1,
+    .flags  = IORESOURCE_MEM
+};
+
+extern struct pci_ops bcm96348_pci_ops;
+
+struct pci_controller bcm96348_controller = {
+    .pci_ops	= &bcm96348_pci_ops,
+    .io_resource	= &bcm_pci_io_resource,
+    .mem_resource	= &bcm_pci_mem_resource,
+};
+
+static void bcm96348_pci_init(void)
+{
+    register_pci_controller(&bcm96348_controller);
+}
+
+arch_initcall(bcm96348_pci_init);