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author | Songmao Tian <tiansm@lemote.com> | 2007-06-06 14:52:38 +0800 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2007-07-10 17:33:02 +0100 |
commit | 42d226c7248a28ff8c478c06b7e9bd9ef5d73574 (patch) | |
tree | 7749c1204cbdb481ddece008dc09234c48b769db /arch/mips/lemote/lm2e/pci.c | |
parent | 2a21c7300b53b744d16903256a172d9cbcfdd03e (diff) | |
download | blackbird-op-linux-42d226c7248a28ff8c478c06b7e9bd9ef5d73574.tar.gz blackbird-op-linux-42d226c7248a28ff8c478c06b7e9bd9ef5d73574.zip |
[MIPS] New files for lemote fulong mini-PC support
Signed-off-by: Fuxin Zhang <zhangfx@lemote.com>
Signed-off-by: Songmao Tian <tiansm@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/lemote/lm2e/pci.c')
-rw-r--r-- | arch/mips/lemote/lm2e/pci.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/mips/lemote/lm2e/pci.c b/arch/mips/lemote/lm2e/pci.c new file mode 100644 index 000000000000..1ade1cef3899 --- /dev/null +++ b/arch/mips/lemote/lm2e/pci.c @@ -0,0 +1,93 @@ +/* + * pci.c + * + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology + * Author: Fuxin Zhang, zhangfx@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. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <asm/mips-boards/bonito64.h> + +extern struct pci_ops bonito64_pci_ops; + +static struct resource loongson2e_pci_mem_resource = { + .name = "LOONGSON2E PCI MEM", + .start = 0x14000000UL, + .end = 0x1fffffffUL, + .flags = IORESOURCE_MEM, +}; + +static struct resource loongson2e_pci_io_resource = { + .name = "LOONGSON2E PCI IO MEM", + .start = 0x00004000UL, + .end = IO_SPACE_LIMIT, + .flags = IORESOURCE_IO, +}; + +static struct pci_controller loongson2e_pci_controller = { + .pci_ops = &bonito64_pci_ops, + .io_resource = &loongson2e_pci_io_resource, + .mem_resource = &loongson2e_pci_mem_resource, + .mem_offset = 0x00000000UL, + .io_offset = 0x00000000UL, +}; + +static void __init ict_pcimap(void) +{ + /* + * local to PCI mapping: [256M,512M] -> [256M,512M]; differ from PMON + * + * CPU address space [256M,448M] is window for accessing pci space + * we set pcimap_lo[0,1,2] to map it to pci space [256M,448M] + * pcimap: bit18,pcimap_2; bit[17-12],lo2;bit[11-6],lo1;bit[5-0],lo0 + */ + /* 1,00 0110 ,0001 01,00 0000 */ + BONITO_PCIMAP = 0x46140; + + /* 1, 00 0010, 0000,01, 00 0000 */ + /* BONITO_PCIMAP = 0x42040; */ + + /* + * PCI to local mapping: [2G,2G+256M] -> [0,256M] + */ + BONITO_PCIBASE0 = 0x80000000; + BONITO_PCIBASE1 = 0x00800000; + BONITO_PCIBASE2 = 0x90000000; + +} + +static int __init pcibios_init(void) +{ + extern int pci_probe_only; + pci_probe_only = 0; + + ict_pcimap(); + register_pci_controller(&loongson2e_pci_controller); + + return 0; +} + +arch_initcall(pcibios_init); |