diff options
Diffstat (limited to '')
-rw-r--r-- | arch/sh/drivers/pci/fixups-rts7751r2d.c | 64 |
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 000000000..3f0a6fe16 --- /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; +} |