int irq;
struct resource cs;
- struct resource io;
- struct resource pio;
- struct resource mem;
- struct resource prefetch;
- struct resource busn;
-
- struct {
- resource_size_t mem;
- resource_size_t io;
- } offset;
struct clk *pex_clk;
struct clk *afi_clk;
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0e1c, tegra_pcie_relax_enable);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0e1d, tegra_pcie_relax_enable);
-static int tegra_pcie_request_resources(struct tegra_pcie *pcie)
-{
- struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie);
- struct list_head *windows = &host->windows;
- struct device *dev = pcie->dev;
- int err;
-
- pci_add_resource_offset(windows, &pcie->pio, pcie->offset.io);
- pci_add_resource_offset(windows, &pcie->mem, pcie->offset.mem);
- pci_add_resource_offset(windows, &pcie->prefetch, pcie->offset.mem);
- pci_add_resource(windows, &pcie->busn);
-
- err = devm_request_pci_bus_resources(dev, windows);
- if (err < 0) {
- pci_free_resource_list(windows);
- return err;
- }
-
- pci_remap_iospace(&pcie->pio, pcie->io.start);
-
- return 0;
-}
-
-static void tegra_pcie_free_resources(struct tegra_pcie *pcie)
-{
- struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie);
- struct list_head *windows = &host->windows;
-
- pci_unmap_iospace(&pcie->pio);
- pci_free_resource_list(windows);
-}
-
static int tegra_pcie_map_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
{
struct tegra_pcie *pcie = pdev->bus->sysdata;
*/
static void tegra_pcie_setup_translations(struct tegra_pcie *pcie)
{
- u32 fpci_bar, size, axi_address;
+ u32 size;
+ struct resource_entry *entry;
+ struct pci_host_bridge *bridge = pci_host_bridge_from_priv(pcie);
/* Bar 0: type 1 extended configuration space */
size = resource_size(&pcie->cs);
afi_writel(pcie, pcie->cs.start, AFI_AXI_BAR0_START);
afi_writel(pcie, size >> 12, AFI_AXI_BAR0_SZ);
- /* Bar 1: downstream IO bar */
- fpci_bar = 0xfdfc0000;
- size = resource_size(&pcie->io);
- axi_address = pcie->io.start;
- afi_writel(pcie, axi_address, AFI_AXI_BAR1_START);
- afi_writel(pcie, size >> 12, AFI_AXI_BAR1_SZ);
- afi_writel(pcie, fpci_bar, AFI_FPCI_BAR1);
-
- /* Bar 2: prefetchable memory BAR */
- fpci_bar = (((pcie->prefetch.start >> 12) & 0x0fffffff) << 4) | 0x1;
- size = resource_size(&pcie->prefetch);
- axi_address = pcie->prefetch.start;
- afi_writel(pcie, axi_address, AFI_AXI_BAR2_START);
- afi_writel(pcie, size >> 12, AFI_AXI_BAR2_SZ);
- afi_writel(pcie, fpci_bar, AFI_FPCI_BAR2);
-
- /* Bar 3: non prefetchable memory BAR */
- fpci_bar = (((pcie->mem.start >> 12) & 0x0fffffff) << 4) | 0x1;
- size = resource_size(&pcie->mem);
- axi_address = pcie->mem.start;
- afi_writel(pcie, axi_address, AFI_AXI_BAR3_START);
- afi_writel(pcie, size >> 12, AFI_AXI_BAR3_SZ);
- afi_writel(pcie, fpci_bar, AFI_FPCI_BAR3);
+ resource_list_for_each_entry(entry, &bridge->windows) {
+ u32 fpci_bar, axi_address;
+ struct resource *res = entry->res;
+
+ size = resource_size(res);
+
+ switch (resource_type(res)) {
+ case IORESOURCE_IO:
+ /* Bar 1: downstream IO bar */
+ fpci_bar = 0xfdfc0000;
+ axi_address = pci_pio_to_address(res->start);
+ afi_writel(pcie, axi_address, AFI_AXI_BAR1_START);
+ afi_writel(pcie, size >> 12, AFI_AXI_BAR1_SZ);
+ afi_writel(pcie, fpci_bar, AFI_FPCI_BAR1);
+ break;
+ case IORESOURCE_MEM:
+ fpci_bar = (((res->start >> 12) & 0x0fffffff) << 4) | 0x1;
+ axi_address = res->start;
+
+ if (res->flags & IORESOURCE_PREFETCH) {
+ /* Bar 2: prefetchable memory BAR */
+ afi_writel(pcie, axi_address, AFI_AXI_BAR2_START);
+ afi_writel(pcie, size >> 12, AFI_AXI_BAR2_SZ);
+ afi_writel(pcie, fpci_bar, AFI_FPCI_BAR2);
+
+ } else {
+ /* Bar 3: non prefetchable memory BAR */
+ afi_writel(pcie, axi_address, AFI_AXI_BAR3_START);
+ afi_writel(pcie, size >> 12, AFI_AXI_BAR3_SZ);
+ afi_writel(pcie, fpci_bar, AFI_FPCI_BAR3);
+ }
+ break;
+ }
+ }
/* NULL out the remaining BARs as they are not used */
afi_writel(pcie, 0, AFI_AXI_BAR4_START);
struct device *dev = pcie->dev;
struct device_node *np = dev->of_node, *port;
const struct tegra_pcie_soc *soc = pcie->soc;
- struct of_pci_range_parser parser;
- struct of_pci_range range;
u32 lanes = 0, mask = 0;
unsigned int lane = 0;
- struct resource res;
int err;
- if (of_pci_range_parser_init(&parser, np)) {
- dev_err(dev, "missing \"ranges\" property\n");
- return -EINVAL;
- }
-
- for_each_of_pci_range(&parser, &range) {
- err = of_pci_range_to_resource(&range, np, &res);
- if (err < 0)
- return err;
-
- switch (res.flags & IORESOURCE_TYPE_BITS) {
- case IORESOURCE_IO:
- /* Track the bus -> CPU I/O mapping offset. */
- pcie->offset.io = res.start - range.pci_addr;
-
- memcpy(&pcie->pio, &res, sizeof(res));
- pcie->pio.name = np->full_name;
-
- /*
- * The Tegra PCIe host bridge uses this to program the
- * mapping of the I/O space to the physical address,
- * so we override the .start and .end fields here that
- * of_pci_range_to_resource() converted to I/O space.
- * We also set the IORESOURCE_MEM type to clarify that
- * the resource is in the physical memory space.
- */
- pcie->io.start = range.cpu_addr;
- pcie->io.end = range.cpu_addr + range.size - 1;
- pcie->io.flags = IORESOURCE_MEM;
- pcie->io.name = "I/O";
-
- memcpy(&res, &pcie->io, sizeof(res));
- break;
-
- case IORESOURCE_MEM:
- /*
- * Track the bus -> CPU memory mapping offset. This
- * assumes that the prefetchable and non-prefetchable
- * regions will be the last of type IORESOURCE_MEM in
- * the ranges property.
- * */
- pcie->offset.mem = res.start - range.pci_addr;
-
- if (res.flags & IORESOURCE_PREFETCH) {
- memcpy(&pcie->prefetch, &res, sizeof(res));
- pcie->prefetch.name = "prefetchable";
- } else {
- memcpy(&pcie->mem, &res, sizeof(res));
- pcie->mem.name = "non-prefetchable";
- }
- break;
- }
- }
-
- err = of_pci_parse_bus_range(np, &pcie->busn);
- if (err < 0) {
- dev_err(dev, "failed to parse ranges property: %d\n", err);
- pcie->busn.name = np->name;
- pcie->busn.start = 0;
- pcie->busn.end = 0xff;
- pcie->busn.flags = IORESOURCE_BUS;
- }
-
/* parse root ports */
for_each_child_of_node(np, port) {
struct tegra_pcie_port *rp;
struct pci_host_bridge *host;
struct tegra_pcie *pcie;
struct pci_bus *child;
+ struct resource *bus;
int err;
host = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
INIT_LIST_HEAD(&pcie->ports);
pcie->dev = dev;
+ err = pci_parse_request_of_pci_ranges(dev, &host->windows, NULL, &bus);
+ if (err) {
+ dev_err(dev, "Getting bridge resources failed\n");
+ return err;
+ }
+
err = tegra_pcie_parse_dt(pcie);
if (err < 0)
return err;
goto teardown_msi;
}
- err = tegra_pcie_request_resources(pcie);
- if (err)
- goto pm_runtime_put;
-
- host->busnr = pcie->busn.start;
+ host->busnr = bus->start;
host->dev.parent = &pdev->dev;
host->ops = &tegra_pcie_ops;
host->map_irq = tegra_pcie_map_irq;
err = pci_scan_root_bus_bridge(host);
if (err < 0) {
dev_err(dev, "failed to register host: %d\n", err);
- goto free_resources;
+ goto pm_runtime_put;
}
pci_bus_size_bridges(host->bus);
return 0;
-free_resources:
- tegra_pcie_free_resources(pcie);
pm_runtime_put:
pm_runtime_put_sync(pcie->dev);
pm_runtime_disable(pcie->dev);
pci_stop_root_bus(host->bus);
pci_remove_root_bus(host->bus);
- tegra_pcie_free_resources(pcie);
pm_runtime_put_sync(pcie->dev);
pm_runtime_disable(pcie->dev);
projects / platform / kernel / linux-rpi.git / commitdiff