1 files changed, 64 insertions, 0 deletions
diff --git a/arch/sh/drivers/pci/fixups-rts7751r2d.c b/arch/sh/drivers/pci/fixups-rts7751r2d.c
new file mode 100644
index 0000000000..3f0a6fe161
--- /dev/null
+++ b/arch/sh/drivers/pci/fixups-rts7751r2d.c
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * arch/sh/drivers/pci/fixups-rts7751r2d.c
+ *
+ * RTS7751R2D / LBOXRE2 PCI fixups
+ *
+ * Copyright (C) 2003  Lineo uSolutions, Inc.
+ * Copyright (C) 2004  Paul Mundt
+ * Copyright (C) 2007  Nobuhiro Iwamatsu
+ */
+#include <linux/pci.h>
+#include <mach/lboxre2.h>
+#include <mach/r2d.h>
+#include "pci-sh4.h"
+#include <generated/machtypes.h>
+
+#define PCIMCR_MRSET_OFF	0xBFFFFFFF
+#define PCIMCR_RFSH_OFF		0xFFFFFFFB
+
+static u8 rts7751r2d_irq_tab[] = {
+	IRQ_PCI_INTA,
+	IRQ_PCI_INTB,
+	IRQ_PCI_INTC,
+	IRQ_PCI_INTD,
+};
+
+static char lboxre2_irq_tab[] = {
+	IRQ_ETH0, IRQ_ETH1, IRQ_INTA, IRQ_INTD,
+};
+
+int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
+{
+	if (mach_is_lboxre2())
+		return lboxre2_irq_tab[slot];
+	else
+		return rts7751r2d_irq_tab[slot];
+}
+
+int pci_fixup_pcic(struct pci_channel *chan)
+{
+	unsigned long bcr1, mcr;
+
+	bcr1 = __raw_readl(SH7751_BCR1);
+	bcr1 |= 0x40080000;	/* Enable Bit 19 BREQEN, set PCIC to slave */
+	pci_write_reg(chan, bcr1, SH4_PCIBCR1);
+
+	/* Enable all interrupts, so we known what to fix */
+	pci_write_reg(chan, 0x0000c3ff, SH4_PCIINTM);
+	pci_write_reg(chan, 0x0000380f, SH4_PCIAINTM);
+
+	pci_write_reg(chan, 0xfb900047, SH7751_PCICONF1);
+	pci_write_reg(chan, 0xab000001, SH7751_PCICONF4);
+
+	mcr = __raw_readl(SH7751_MCR);
+	mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF;
+	pci_write_reg(chan, mcr, SH4_PCIMCR);
+
+	pci_write_reg(chan, 0x0c000000, SH7751_PCICONF5);
+	pci_write_reg(chan, 0xd0000000, SH7751_PCICONF6);
+	pci_write_reg(chan, 0x0c000000, SH4_PCILAR0);
+	pci_write_reg(chan, 0x00000000, SH4_PCILAR1);
+
+	return 0;
+}