From 62c7ae87cb5962d3dfaa6d916a15e4faa9e07363 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Fri, 17 Apr 2009 20:37:16 +0900 Subject: [PATCH] sh: pci: Start unifying the SH7780 PCIC initialization. This starts moving out the common initialization bits from the various fixup paths in to the shared init path. Signed-off-by: Paul Mundt --- arch/sh/drivers/pci/fixups-r7780rp.c | 20 +---------- arch/sh/drivers/pci/fixups-sdk7780.c | 32 +++--------------- arch/sh/drivers/pci/pci-sh7780.c | 50 +++++++++++++++++----------- arch/sh/drivers/pci/pci-sh7780.h | 5 --- 4 files changed, 37 insertions(+), 70 deletions(-) diff --git a/arch/sh/drivers/pci/fixups-r7780rp.c b/arch/sh/drivers/pci/fixups-r7780rp.c index 864e92f6970..15ca65cb667 100644 --- a/arch/sh/drivers/pci/fixups-r7780rp.c +++ b/arch/sh/drivers/pci/fixups-r7780rp.c @@ -22,33 +22,15 @@ int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin) { return irq_tab[slot]; } + int pci_fixup_pcic(struct pci_channel *chan) { pci_write_reg(chan, 0x000043ff, SH4_PCIINTM); - pci_write_reg(chan, 0x0000380f, SH4_PCIAINTM); - - pci_write_reg(chan, 0xfbb00047, SH7780_PCICMD); pci_write_reg(chan, 0x00000000, SH7780_PCIIBAR); - - pci_write_reg(chan, 0x00011912, SH7780_PCISVID); pci_write_reg(chan, 0x08000000, SH7780_PCICSCR0); pci_write_reg(chan, 0x0000001b, SH7780_PCICSAR0); pci_write_reg(chan, 0xfd000000, SH7780_PCICSCR1); pci_write_reg(chan, 0x0000000f, SH7780_PCICSAR1); - pci_write_reg(chan, 0xfd000000, SH7780_PCIMBR0); - pci_write_reg(chan, 0x00fc0000, SH7780_PCIMBMR0); - -#ifdef CONFIG_32BIT - pci_write_reg(chan, 0xc0000000, SH7780_PCIMBR2); - pci_write_reg(chan, 0x20000000 - SH7780_PCI_IO_SIZE, SH7780_PCIMBMR2); -#endif - - /* Set IOBR for windows containing area specified in pci.h */ - pci_write_reg(chan, chan->io_resource->start & ~(SH7780_PCI_IO_SIZE-1), - SH7780_PCIIOBR); - pci_write_reg(chan, ((SH7780_PCI_IO_SIZE-1) & (7<<18)), - SH7780_PCIIOBMR); - return 0; } diff --git a/arch/sh/drivers/pci/fixups-sdk7780.c b/arch/sh/drivers/pci/fixups-sdk7780.c index da60e99894b..250b0edd736 100644 --- a/arch/sh/drivers/pci/fixups-sdk7780.c +++ b/arch/sh/drivers/pci/fixups-sdk7780.c @@ -35,40 +35,18 @@ int pci_fixup_pcic(struct pci_channel *chan) { /* Enable all interrupts, so we know what to fix */ pci_write_reg(chan, 0x0000C3FF, SH7780_PCIIMR); - pci_write_reg(chan, 0x0000380F, SH7780_PCIAINTM); /* Set up standard PCI config registers */ - pci_write_reg(chan, 0xFB00, SH7780_PCISTATUS); - pci_write_reg(chan, 0x0047, SH7780_PCICMD); - pci_write_reg(chan, 0x00, SH7780_PCIPIF); - pci_write_reg(chan, 0x1912, SH7780_PCISVID); - pci_write_reg(chan, 0x0001, SH7780_PCISID); - pci_write_reg(chan, 0x08000000, SH7780_PCIMBAR0); /* PCI */ - pci_write_reg(chan, 0x08000000, SH7780_PCILAR0); /* SHwy */ - pci_write_reg(chan, 0x07F00001, SH7780_PCILSR); /* size 128M w/ MBAR */ + pci_write_reg(chan, 0x08000000, SH4_PCILAR0); /* SHwy */ + pci_write_reg(chan, 0x07F00001, SH4_PCILSR0); /* size 128M w/ MBAR */ pci_write_reg(chan, 0x00000000, SH7780_PCIMBAR1); - pci_write_reg(chan, 0x00000000, SH7780_PCILAR1); - pci_write_reg(chan, 0x00000000, SH7780_PCILSR1); + pci_write_reg(chan, 0x00000000, SH4_PCILAR1); + pci_write_reg(chan, 0x00000000, SH4_PCILSR1); pci_write_reg(chan, 0xAB000801, SH7780_PCIIBAR); - - /* - * Set the MBR so PCI address is one-to-one with window, - * meaning all calls go straight through... use ifdef to - * catch erroneous assumption. - */ - pci_write_reg(chan, 0xFD000000 , SH7780_PCIMBR0); - pci_write_reg(chan, 0x00FC0000 , SH7780_PCIMBMR0); /* 16M */ - - /* Set IOBR for window containing area specified in pci.h */ - pci_write_reg(chan, chan->io_resource->start & ~(SH7780_PCI_IO_SIZE-1), - SH7780_PCIIOBR); - pci_write_reg(chan, (SH7780_PCI_IO_SIZE-1) & (7 << 18), - SH7780_PCIIOBMR); - - pci_write_reg(chan, 0xA5000C01, SH7780_PCICR); + pci_write_reg(chan, 0xA5000C01, SH4_PCICR); return 0; } diff --git a/arch/sh/drivers/pci/pci-sh7780.c b/arch/sh/drivers/pci/pci-sh7780.c index 07c5529a273..f02d9dfcf25 100644 --- a/arch/sh/drivers/pci/pci-sh7780.c +++ b/arch/sh/drivers/pci/pci-sh7780.c @@ -1,19 +1,12 @@ /* - * Low-Level PCI Support for the SH7780 + * Low-Level PCI Support for the SH7780 * - * Dustin McIntire (dustin@sensoria.com) - * Derived from arch/i386/kernel/pci-*.c which bore the message: - * (c) 1999--2000 Martin Mares - * - * Ported to the new API by Paul Mundt - * With cleanup by Paul van Gool - * - * May be copied or modified under the terms of the GNU General Public - * License. See linux/COPYING for more information. + * Copyright (C) 2005 - 2009 Paul Mundt * + * 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. */ -#undef DEBUG - #include #include #include @@ -117,13 +110,8 @@ int __init pcibios_init_platform(void) pci_cache_line_size = pci_read_reg(chan, SH7780_PCICLS) / 4; - /* set the command/status bits to: - * Wait Cycle Control + Parity Enable + Bus Master + - * Mem space enable - */ - pci_write_reg(chan, 0x00000046, SH7780_PCICMD); - - /* Set IO and Mem windows to local address + /* + * Set IO and Mem windows to local address * Make PCI and local address the same for easy 1 to 1 mapping */ pci_write_reg(chan, sh7780_pci_map.window0.size - 0xfffff, SH4_PCILSR0); @@ -131,9 +119,33 @@ int __init pcibios_init_platform(void) pci_write_reg(chan, sh7780_pci_map.window0.base, SH4_PCILAR0); pci_write_reg(chan, sh7780_pci_map.window0.base, SH7780_PCIMBAR0); + pci_write_reg(chan, 0x0000380f, SH4_PCIAINTM); + + /* Set up standard PCI config registers */ + __raw_writew(0xFB00, chan->reg_base + SH7780_PCISTATUS); + __raw_writew(0x0047, chan->reg_base + SH7780_PCICMD); + __raw_writew(0x1912, chan->reg_base + SH7780_PCISVID); + __raw_writew(0x0001, chan->reg_base + SH7780_PCISID); + + __raw_writeb(0x00, chan->reg_base + SH7780_PCIPIF); + /* Apply any last-minute PCIC fixups */ pci_fixup_pcic(chan); + pci_write_reg(chan, 0xfd000000, SH7780_PCIMBR0); + pci_write_reg(chan, 0x00fc0000, SH7780_PCIMBMR0); + +#ifdef CONFIG_32BIT + pci_write_reg(chan, 0xc0000000, SH7780_PCIMBR2); + pci_write_reg(chan, 0x20000000 - SH7780_PCI_IO_SIZE, SH7780_PCIMBMR2); +#endif + + /* Set IOBR for windows containing area specified in pci.h */ + pci_write_reg(chan, chan->io_resource->start & ~(SH7780_PCI_IO_SIZE-1), + SH7780_PCIIOBR); + pci_write_reg(chan, ((SH7780_PCI_IO_SIZE-1) & (7<<18)), + SH7780_PCIIOBMR); + /* SH7780 init done, set central function init complete */ /* use round robin mode to stop a device starving/overruning */ word = SH4_PCICR_PREFIX | SH4_PCICR_CFIN | SH4_PCICR_FTO; diff --git a/arch/sh/drivers/pci/pci-sh7780.h b/arch/sh/drivers/pci/pci-sh7780.h index 4b65d4b26f7..4a52478c97c 100644 --- a/arch/sh/drivers/pci/pci-sh7780.h +++ b/arch/sh/drivers/pci/pci-sh7780.h @@ -65,11 +65,6 @@ #define SH7780_PCIPMCSR_BSE 0x046 #define SH7780_PCICDD 0x047 -#define SH7780_PCICR 0x100 /* PCI Control Register */ -#define SH7780_PCILSR 0x104 /* PCI Local Space Register0 */ -#define SH7780_PCILSR1 0x108 /* PCI Local Space Register1 */ -#define SH7780_PCILAR0 0x10C /* PCI Local Address Register1 */ -#define SH7780_PCILAR1 0x110 /* PCI Local Address Register1 */ #define SH7780_PCIIR 0x114 /* PCI Interrupt Register */ #define SH7780_PCIIMR 0x118 /* PCI Interrupt Mask Register */ #define SH7780_PCIAIR 0x11C /* Error Address Register */