1 files changed, 112 insertions, 0 deletions

diff --git a/arch/mips/pci/fixup-cobalt.c b/arch/mips/pci/fixup-cobalt.c
new file mode 100644
index 000000000000..57e1ca2116bb
--- /dev/null
+++ b/arch/mips/pci/fixup-cobalt.c
@@ -0,0 +1,112 @@
+/*
+ * Cobalt Qube/Raq PCI support
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1995, 1996, 1997, 2002, 2003 by Ralf Baechle
+ * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv)
+ */
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/pci.h>
+#include <asm/io.h>
+#include <asm/gt64120.h>
+
+#include <asm/cobalt/cobalt.h>
+
+extern int cobalt_board_id;
+
+static void qube_raq_via_bmIDE_fixup(struct pci_dev *dev)
+{
+        unsigned short cfgword;
+        unsigned char lt;
+
+        /* Enable Bus Mastering and fast back to back. */
+        pci_read_config_word(dev, PCI_COMMAND, &cfgword);
+        cfgword |= (PCI_COMMAND_FAST_BACK | PCI_COMMAND_MASTER);
+        pci_write_config_word(dev, PCI_COMMAND, cfgword);
+
+        /* Enable both ide interfaces. ROM only enables primary one.  */
+        pci_write_config_byte(dev, 0x40, 0xb);
+
+        /* Set latency timer to reasonable value. */
+        pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lt);
+        if (lt < 64)
+                pci_write_config_byte(dev, PCI_LATENCY_TIMER, 64);
+        pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 7);
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1,
+         qube_raq_via_bmIDE_fixup);
+
+static void qube_raq_galileo_fixup(struct pci_dev *dev)
+{
+        unsigned short galileo_id;
+
+        /* Fix PCI latency-timer and cache-line-size values in Galileo
+         * host bridge.
+         */
+        pci_write_config_byte(dev, PCI_LATENCY_TIMER, 64);
+        pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 7);
+
+        /*
+         * On all machines prior to Q2, we had the STOP line disconnected
+         * from Galileo to VIA on PCI.  The new Galileo does not function
+         * correctly unless we have it connected.
+         *
+         * Therefore we must set the disconnect/retry cycle values to
+         * something sensible when using the new Galileo.
+         */
+        pci_read_config_word(dev, PCI_REVISION_ID, &galileo_id);
+        galileo_id &= 0xff;     /* mask off class info */
+        if (galileo_id >= 0x10) {
+                /* New Galileo, assumes PCI stop line to VIA is connected. */
+                GALILEO_OUTL(0x4020, GT_PCI0_TOR_OFS);
+        } else if (galileo_id == 0x1 || galileo_id == 0x2) {
+                signed int timeo;
+                /* XXX WE MUST DO THIS ELSE GALILEO LOCKS UP! -DaveM */
+                timeo = GALILEO_INL(GT_PCI0_TOR_OFS);
+                /* Old Galileo, assumes PCI STOP line to VIA is disconnected. */
+                GALILEO_OUTL(0xffff, GT_PCI0_TOR_OFS);
+        }
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_GALILEO, PCI_ANY_ID,
+         qube_raq_galileo_fixup);
+
+static char irq_tab_cobalt[] __initdata = {
+  [COBALT_PCICONF_CPU]     = 0,
+  [COBALT_PCICONF_ETH0]    = COBALT_ETH0_IRQ,
+  [COBALT_PCICONF_RAQSCSI] = COBALT_SCSI_IRQ,
+  [COBALT_PCICONF_VIA]     = 0,
+  [COBALT_PCICONF_PCISLOT] = COBALT_QUBE_SLOT_IRQ,
+  [COBALT_PCICONF_ETH1]    = COBALT_ETH1_IRQ
+};
+
+static char irq_tab_raq2[] __initdata = {
+  [COBALT_PCICONF_CPU]     = 0,
+  [COBALT_PCICONF_ETH0]    = COBALT_ETH0_IRQ,
+  [COBALT_PCICONF_RAQSCSI] = COBALT_RAQ_SCSI_IRQ,
+  [COBALT_PCICONF_VIA]     = 0,
+  [COBALT_PCICONF_PCISLOT] = COBALT_QUBE_SLOT_IRQ,
+  [COBALT_PCICONF_ETH1]    = COBALT_ETH1_IRQ
+};
+
+int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+        if (cobalt_board_id == COBALT_BRD_ID_RAQ2)
+                return irq_tab_raq2[slot];
+
+        return irq_tab_cobalt[slot];
+}
+
+/* Do platform specific device initialization at pci_enable_device() time */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+        return 0;
+}