137 lines
2.8 KiB
C++
137 lines
2.8 KiB
C++
/*
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* \brief Implementation of linux/pci.h
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* \author Norman Feske
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* \date 2015-09-09
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*/
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/*
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* Copyright (C) 2015-2017 Genode Labs GmbH
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*
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* This file is distributed under the terms of the GNU General Public License
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* version 2.
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*/
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/* Linux kit includes */
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#include <lx_kit/pci_dev_registry.h>
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#include <lx_kit/mapped_io_mem_range.h>
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extern "C" size_t pci_resource_start(struct pci_dev *dev, unsigned bar)
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{
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if (bar >= DEVICE_COUNT_RESOURCE)
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return 0;
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return dev->resource[bar].start;
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}
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extern "C" size_t pci_resource_end(struct pci_dev *dev, unsigned bar)
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{
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if (bar >= DEVICE_COUNT_RESOURCE)
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return 0;
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return dev->resource[bar].end;
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}
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extern "C" size_t pci_resource_len(struct pci_dev *dev, unsigned bar)
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{
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size_t start = pci_resource_start(dev, bar);
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if (!start)
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return 0;
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return (dev->resource[bar].end - start) + 1;
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}
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extern "C" void *pci_ioremap_bar(struct pci_dev *dev, int bar)
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{
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using namespace Genode;
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if (bar >= DEVICE_COUNT_RESOURCE || bar < 0)
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return 0;
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return Lx::ioremap(pci_resource_start(dev, bar),
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pci_resource_len(dev, bar),
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Genode::UNCACHED);
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}
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extern "C" unsigned int pci_resource_flags(struct pci_dev *dev, unsigned bar)
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{
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if (bar >= DEVICE_COUNT_RESOURCE)
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return 0;
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return dev->resource[bar].flags;
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}
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extern "C" int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int, int where, u8 *val)
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{
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Lx::Pci_dev *dev = (Lx::Pci_dev *)bus;
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dev->config_read(where, val);
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return 0;
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}
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extern "C" int pci_bus_read_config_word(struct pci_bus *bus, unsigned int, int where, u16 *val)
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{
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Lx::Pci_dev *dev = (Lx::Pci_dev *)bus;
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dev->config_read(where, val);
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return 0;
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}
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extern "C" int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int, int where, u32 *val)
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{
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Lx::Pci_dev *dev = (Lx::Pci_dev *)bus;
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dev->config_read(where, val);
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return 0;
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}
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extern "C" int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int, int where, u8 val)
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{
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Lx::Pci_dev *dev = (Lx::Pci_dev *)bus;
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dev->config_write(where, val);
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return 0;
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}
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extern "C" int pci_bus_write_config_word(struct pci_bus *bus, unsigned int, int where, u16 val)
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{
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Lx::Pci_dev *dev = (Lx::Pci_dev *)bus;
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dev->config_write(where, val);
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return 0;
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}
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extern "C" int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int, int where, u32 val)
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{
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Lx::Pci_dev *dev = (Lx::Pci_dev *)bus;
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dev->config_write(where, val);
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return 0;
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}
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extern "C" const char *pci_name(const struct pci_dev *pdev)
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{
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/* simply return driver name */
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return "dummy";
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}
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extern "C" int pcie_capability_read_word(struct pci_dev *pdev, int pos, u16 *val)
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{
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Lx::Pci_dev *dev = (Lx::Pci_dev *)pdev->bus;
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switch (pos) {
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case PCI_EXP_LNKCTL:
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dev->config_read(pdev->pcie_cap + PCI_EXP_LNKCTL, val);
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return 0;
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break;
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default:
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break;
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}
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return 1;
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}
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