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Diffstat (limited to 'kernel/arch/mips/pci/fixup-loongson3.c')
-rw-r--r--kernel/arch/mips/pci/fixup-loongson3.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/kernel/arch/mips/pci/fixup-loongson3.c b/kernel/arch/mips/pci/fixup-loongson3.c
new file mode 100644
index 000000000..d708ae46d
--- /dev/null
+++ b/kernel/arch/mips/pci/fixup-loongson3.c
@@ -0,0 +1,66 @@
+/*
+ * fixup-loongson3.c
+ *
+ * Copyright (C) 2012 Lemote, Inc.
+ * Author: Xiang Yu, xiangy@lemote.com
+ * Chen Huacai, chenhc@lemote.com
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <linux/pci.h>
+#include <boot_param.h>
+
+static void print_fixup_info(const struct pci_dev *pdev)
+{
+ dev_info(&pdev->dev, "Device %x:%x, irq %d\n",
+ pdev->vendor, pdev->device, pdev->irq);
+}
+
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ print_fixup_info(dev);
+ return dev->irq;
+}
+
+static void pci_fixup_radeon(struct pci_dev *pdev)
+{
+ if (pdev->resource[PCI_ROM_RESOURCE].start)
+ return;
+
+ if (!loongson_sysconf.vgabios_addr)
+ return;
+
+ pdev->resource[PCI_ROM_RESOURCE].start =
+ loongson_sysconf.vgabios_addr;
+ pdev->resource[PCI_ROM_RESOURCE].end =
+ loongson_sysconf.vgabios_addr + 256*1024 - 1;
+ pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_COPY;
+
+ dev_info(&pdev->dev, "BAR %d: assigned %pR for Radeon ROM\n",
+ PCI_ROM_RESOURCE, &pdev->resource[PCI_ROM_RESOURCE]);
+}
+
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
+ PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_radeon);
+
+/* Do platform specific device initialization at pci_enable_device() time */
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ return 0;
+}