mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2013 Imagination Technologies
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* Author: Paul Burton <paul.burton@mips.com>
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*/
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#include <common.h>
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#include <msc01.h>
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#include <pci.h>
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#include <pci_msc01.h>
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#include <asm/io.h>
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#define PCI_ACCESS_READ 0
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#define PCI_ACCESS_WRITE 1
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struct msc01_pci_controller {
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struct pci_controller hose;
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void *base;
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};
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static inline struct msc01_pci_controller *
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hose_to_msc01(struct pci_controller *hose)
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{
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return container_of(hose, struct msc01_pci_controller, hose);
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}
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static int msc01_config_access(struct msc01_pci_controller *msc01,
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unsigned char access_type, pci_dev_t bdf,
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int where, u32 *data)
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{
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const u32 aborts = MSC01_PCI_INTSTAT_MA_MSK | MSC01_PCI_INTSTAT_TA_MSK;
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void *intstat = msc01->base + MSC01_PCI_INTSTAT_OFS;
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void *cfgdata = msc01->base + MSC01_PCI_CFGDATA_OFS;
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unsigned int bus = PCI_BUS(bdf);
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unsigned int dev = PCI_DEV(bdf);
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unsigned int devfn = PCI_DEV(bdf) << 3 | PCI_FUNC(bdf);
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/* clear abort status */
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__raw_writel(aborts, intstat);
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/* setup address */
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__raw_writel((bus << MSC01_PCI_CFGADDR_BNUM_SHF) |
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(dev << MSC01_PCI_CFGADDR_DNUM_SHF) |
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(devfn << MSC01_PCI_CFGADDR_FNUM_SHF) |
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((where / 4) << MSC01_PCI_CFGADDR_RNUM_SHF),
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msc01->base + MSC01_PCI_CFGADDR_OFS);
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/* perform access */
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if (access_type == PCI_ACCESS_WRITE)
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__raw_writel(*data, cfgdata);
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else
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*data = __raw_readl(cfgdata);
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/* check for aborts */
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if (__raw_readl(intstat) & aborts) {
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/* clear abort status */
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__raw_writel(aborts, intstat);
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return -1;
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}
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return 0;
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}
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static int msc01_read_config_dword(struct pci_controller *hose, pci_dev_t dev,
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int where, u32 *value)
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{
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struct msc01_pci_controller *msc01 = hose_to_msc01(hose);
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*value = 0xffffffff;
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return msc01_config_access(msc01, PCI_ACCESS_READ, dev, where, value);
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}
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static int msc01_write_config_dword(struct pci_controller *hose, pci_dev_t dev,
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int where, u32 value)
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{
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struct msc01_pci_controller *gt = hose_to_msc01(hose);
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u32 data = value;
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return msc01_config_access(gt, PCI_ACCESS_WRITE, dev, where, &data);
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}
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void msc01_pci_init(void *base, unsigned long sys_bus, unsigned long sys_phys,
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unsigned long sys_size, unsigned long mem_bus,
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unsigned long mem_phys, unsigned long mem_size,
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unsigned long io_bus, unsigned long io_phys,
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unsigned long io_size)
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{
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static struct msc01_pci_controller global_msc01;
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struct msc01_pci_controller *msc01;
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struct pci_controller *hose;
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msc01 = &global_msc01;
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msc01->base = base;
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hose = &msc01->hose;
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hose->first_busno = 0;
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hose->last_busno = 0;
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/* System memory space */
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pci_set_region(&hose->regions[0], sys_bus, sys_phys, sys_size,
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PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
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/* PCI memory space */
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pci_set_region(&hose->regions[1], mem_bus, mem_phys, mem_size,
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PCI_REGION_MEM);
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/* PCI I/O space */
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pci_set_region(&hose->regions[2], io_bus, io_phys, io_size,
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PCI_REGION_IO);
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hose->region_count = 3;
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pci_set_ops(hose,
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pci_hose_read_config_byte_via_dword,
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pci_hose_read_config_word_via_dword,
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msc01_read_config_dword,
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pci_hose_write_config_byte_via_dword,
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pci_hose_write_config_word_via_dword,
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msc01_write_config_dword);
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pci_register_hose(hose);
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hose->last_busno = pci_hose_scan(hose);
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}
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