MIPS: Loongson64: Switch to generic PCI driver

We can now enable generic PCI driver in Kconfig, and remove legacy PCI driver code. Radeon vbios quirk is moved to the platform folder to fit the new structure. Signed-off-by: Jiaxun Yang <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
torvalds · May 27, 2020 · 6423e59 · 6423e59
1 parent d8242e6
commit 6423e59
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Showing 6 changed files with 31 additions and 189 deletions.
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
@@ -464,6 +464,7 @@ config MACH_LOONGSON64
 	select IRQ_MIPS_CPU
 	select NR_CPUS_DEFAULT_64
 	select USE_GENERIC_EARLY_PRINTK_8250
+	select PCI_DRIVERS_GENERIC
 	select SYS_HAS_CPU_LOONGSON64
 	select SYS_HAS_EARLY_PRINTK
 	select SYS_SUPPORTS_SMP

diff --git a/arch/mips/loongson64/Makefile b/arch/mips/loongson64/Makefile
@@ -8,6 +8,6 @@ obj-$(CONFIG_MACH_LOONGSON64) += cop2-ex.o platform.o dma.o \
 obj-$(CONFIG_SMP)	+= smp.o
 obj-$(CONFIG_NUMA)	+= numa.o
 obj-$(CONFIG_RS780_HPET) += hpet.o
-obj-$(CONFIG_PCI) += pci.o
 obj-$(CONFIG_SUSPEND) += pm.o
+obj-$(CONFIG_PCI_QUIRKS) += vbios_quirk.o
 obj-$(CONFIG_CPU_LOONGSON3_CPUCFG_EMULATION) += cpucfg-emul.o
diff --git a/arch/mips/loongson64/vbios_quirk.c b/arch/mips/loongson64/vbios_quirk.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/pci.h>
+#include <loongson.h>
+
+static void pci_fixup_radeon(struct pci_dev *pdev)
+{
+	struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
+
+	if (res->start)
+		return;
+
+	if (!loongson_sysconf.vgabios_addr)
+		return;
+
+	pci_disable_rom(pdev);
+	if (res->parent)
+		release_resource(res);
+
+	res->start = virt_to_phys((void *) loongson_sysconf.vgabios_addr);
+	res->end   = res->start + 256*1024 - 1;
+	res->flags = IORESOURCE_MEM | IORESOURCE_ROM_SHADOW |
+		     IORESOURCE_PCI_FIXED;
+
+	dev_info(&pdev->dev, "BAR %d: assigned %pR for Radeon ROM\n",
+		 PCI_ROM_RESOURCE, res);
+}
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, 0x9615,
+				PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_radeon);
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
@@ -32,7 +32,6 @@ obj-$(CONFIG_ATH79)		+= fixup-ath79.o
 obj-$(CONFIG_MIPS_COBALT)	+= fixup-cobalt.o
 obj-$(CONFIG_LEMOTE_FULOONG2E)	+= fixup-fuloong2e.o ops-loongson2.o
 obj-$(CONFIG_LEMOTE_MACH2F)	+= fixup-lemote2f.o ops-loongson2.o
-obj-$(CONFIG_MACH_LOONGSON64)	+= fixup-loongson3.o ops-loongson3.o
 obj-$(CONFIG_MIPS_MALTA)	+= fixup-malta.o pci-malta.o
 obj-$(CONFIG_SGI_IP27)		+= pci-ip27.o
 obj-$(CONFIG_SGI_IP32)		+= fixup-ip32.o ops-mace.o pci-ip32.o

diff --git a/arch/mips/pci/fixup-loongson3.c b/arch/mips/pci/fixup-loongson3.c
diff --git a/arch/mips/pci/ops-loongson3.c b/arch/mips/pci/ops-loongson3.c