forked from luck/tmp_suning_uos_patched
c7d3555ac0
Loongson family machines use Hyper-Transport bus for inter-core connection and device connection. The PCI bus is a subordinate linked at HT1. With LEFI firmware interface, We don't need fixup for PCI irq routing (except providing a VBIOS of the integrated GPU). Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Hongliang Tao <taohl@lemote.com> Signed-off-by: Hua Yan <yanh@lemote.com> Tested-by: Alex Smith <alex.smith@imgtec.com> Reviewed-by: Alex Smith <alex.smith@imgtec.com> Cc: John Crispin <john@phrozen.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/6633 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/*
|
|
* fixup-loongson3.c
|
|
*
|
|
* Copyright (C) 2012 Lemote, Inc.
|
|
* Author: Xiang Yu, xiangy@lemote.com
|
|
* Chen Huacai, chenhc@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.
|
|
*
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
#include <boot_param.h>
|
|
|
|
static void print_fixup_info(const struct pci_dev *pdev)
|
|
{
|
|
dev_info(&pdev->dev, "Device %x:%x, irq %d\n",
|
|
pdev->vendor, pdev->device, pdev->irq);
|
|
}
|
|
|
|
int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
print_fixup_info(dev);
|
|
return dev->irq;
|
|
}
|
|
|
|
static void pci_fixup_radeon(struct pci_dev *pdev)
|
|
{
|
|
if (pdev->resource[PCI_ROM_RESOURCE].start)
|
|
return;
|
|
|
|
if (!loongson_sysconf.vgabios_addr)
|
|
return;
|
|
|
|
pdev->resource[PCI_ROM_RESOURCE].start =
|
|
loongson_sysconf.vgabios_addr;
|
|
pdev->resource[PCI_ROM_RESOURCE].end =
|
|
loongson_sysconf.vgabios_addr + 256*1024 - 1;
|
|
pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_COPY;
|
|
|
|
dev_info(&pdev->dev, "BAR %d: assigned %pR for Radeon ROM\n",
|
|
PCI_ROM_RESOURCE, &pdev->resource[PCI_ROM_RESOURCE]);
|
|
}
|
|
|
|
DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
|
|
PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_radeon);
|
|
|
|
/* Do platform specific device initialization at pci_enable_device() time */
|
|
int pcibios_plat_dev_init(struct pci_dev *dev)
|
|
{
|
|
return 0;
|
|
}
|