+/*
+<: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 <6348_intr.h>
+#include <6348_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
+};
projects / openwrt / svn-archive / archive.git / blobdiff