#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_pci.h>
#include <video/vga.h>
#include <mach/hardware.h>
* the mappings into PCI memory.
*/
+/* Filled in by probe */
static void __iomem *pci_v3_base;
+static struct resource conf_mem; /* FIXME: remap this instead of static map */
+static struct resource io_mem;
+static struct resource non_mem;
+static struct resource pre_mem;
// V3 access routines
#define v3_writeb(o,v) __raw_writeb(v, pci_v3_base + (unsigned int)(o))
* prefetchable), this frees up base1 for re-use by
* configuration memory
*/
- v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE) |
+ v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(non_mem.start) |
V3_LB_BASE_ADR_SIZE_512MB | V3_LB_BASE_ENABLE);
/*
* Set up base1/map1 to point into configuration space.
*/
- v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(PHYS_PCI_CONFIG_BASE) |
+ v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(conf_mem.start) |
V3_LB_BASE_ADR_SIZE_16MB | V3_LB_BASE_ENABLE);
v3_writew(V3_LB_MAP1, mapaddress);
/*
* Reassign base1 for use by prefetchable PCI memory
*/
- v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE + SZ_256M) |
+ v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(pre_mem.start) |
V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_PREFETCH |
V3_LB_BASE_ENABLE);
v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(PCI_BUS_PREMEM_START) |
/*
* And shrink base0 back to a 256M window (NOTE: MAP0 already correct)
*/
- v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE) |
+ v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(non_mem.start) |
V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_ENABLE);
}
.write = v3_write_config,
};
-static struct resource non_mem = {
- .name = "PCI non-prefetchable",
- .start = PHYS_PCI_MEM_BASE + PCI_BUS_NONMEM_START,
- .end = PHYS_PCI_MEM_BASE + PCI_BUS_NONMEM_START + PCI_BUS_NONMEM_SIZE - 1,
- .flags = IORESOURCE_MEM,
-};
-
-static struct resource pre_mem = {
- .name = "PCI prefetchable",
- .start = PHYS_PCI_MEM_BASE + PCI_BUS_PREMEM_START,
- .end = PHYS_PCI_MEM_BASE + PCI_BUS_PREMEM_START + PCI_BUS_PREMEM_SIZE - 1,
- .flags = IORESOURCE_MEM | IORESOURCE_PREFETCH,
-};
-
static int __init pci_v3_setup_resources(struct pci_sys_data *sys)
{
if (request_resource(&iomem_resource, &non_mem)) {
return -EINVAL;
if (nr == 0) {
- sys->mem_offset = PHYS_PCI_MEM_BASE;
+ sys->mem_offset = non_mem.start;
ret = pci_v3_setup_resources(sys);
}
* Setup window 0 - PCI non-prefetchable memory
* Local: 0x40000000 Bus: 0x00000000 Size: 256MB
*/
- v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE) |
+ v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(non_mem.start) |
V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_ENABLE);
v3_writew(V3_LB_MAP0, v3_addr_to_lb_map(PCI_BUS_NONMEM_START) |
V3_LB_MAP_TYPE_MEM);
* Setup window 1 - PCI prefetchable memory
* Local: 0x50000000 Bus: 0x10000000 Size: 256MB
*/
- v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE + SZ_256M) |
+ v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(pre_mem.start) |
V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_PREFETCH |
V3_LB_BASE_ENABLE);
v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(PCI_BUS_PREMEM_START) |
/*
* Setup window 2 - PCI IO
*/
- v3_writel(V3_LB_BASE2, v3_addr_to_lb_base2(PHYS_PCI_IO_BASE) |
+ v3_writel(V3_LB_BASE2, v3_addr_to_lb_base2(io_mem.start) |
V3_LB_BASE_ENABLE);
v3_writew(V3_LB_MAP2, v3_addr_to_lb_map2(0));
"interrupt: %d\n", ret);
#endif
- register_isa_ports(PHYS_PCI_MEM_BASE, PHYS_PCI_IO_BASE, 0);
+ register_isa_ports(non_mem.start, io_mem.start, 0);
}
/*
static struct hw_pci pci_v3 __initdata = {
.swizzle = pci_v3_swizzle,
- .map_irq = pci_v3_map_irq,
.setup = pci_v3_setup,
.nr_controllers = 1,
.ops = &pci_v3_ops,
.postinit = pci_v3_postinit,
};
+#ifdef CONFIG_OF
+
+static int __init pci_v3_map_irq_dt(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ struct of_irq oirq;
+ int ret;
+
+ ret = of_irq_map_pci(dev, &oirq);
+ if (ret) {
+ dev_err(&dev->dev, "of_irq_map_pci() %d\n", ret);
+ /* Proper return code 0 == NO_IRQ */
+ return 0;
+ }
+
+ return irq_create_of_mapping(oirq.controller, oirq.specifier,
+ oirq.size);
+}
+
+static int __init pci_v3_dtprobe(struct platform_device *pdev,
+ struct device_node *np)
+{
+ struct of_pci_range_parser parser;
+ struct of_pci_range range;
+ struct resource *res;
+ int irq, ret;
+
+ if (of_pci_range_parser_init(&parser, np))
+ return -EINVAL;
+
+ /* Get base for bridge registers */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "unable to obtain PCIv3 base\n");
+ return -ENODEV;
+ }
+ pci_v3_base = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
+ if (!pci_v3_base) {
+ dev_err(&pdev->dev, "unable to remap PCIv3 base\n");
+ return -ENODEV;
+ }
+
+ /* Get and request error IRQ resource */
+ irq = platform_get_irq(pdev, 0);
+ if (irq <= 0) {
+ dev_err(&pdev->dev, "unable to obtain PCIv3 error IRQ\n");
+ return -ENODEV;
+ }
+ ret = devm_request_irq(&pdev->dev, irq, v3_irq, 0,
+ "PCIv3 error", NULL);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "unable to request PCIv3 error IRQ %d (%d)\n", irq, ret);
+ return ret;
+ }
+
+ for_each_of_pci_range(&parser, &range) {
+ if (!range.flags) {
+ of_pci_range_to_resource(&range, np, &conf_mem);
+ conf_mem.name = "PCIv3 config";
+ }
+ if (range.flags & IORESOURCE_IO) {
+ of_pci_range_to_resource(&range, np, &io_mem);
+ io_mem.name = "PCIv3 I/O";
+ }
+ if ((range.flags & IORESOURCE_MEM) &&
+ !(range.flags & IORESOURCE_PREFETCH)) {
+ of_pci_range_to_resource(&range, np, &non_mem);
+ non_mem.name = "PCIv3 non-prefetched mem";
+ }
+ if ((range.flags & IORESOURCE_MEM) &&
+ (range.flags & IORESOURCE_PREFETCH)) {
+ of_pci_range_to_resource(&range, np, &pre_mem);
+ pre_mem.name = "PCIv3 prefetched mem";
+ }
+ }
+
+ if (!conf_mem.start || !io_mem.start ||
+ !non_mem.start || !pre_mem.start) {
+ dev_err(&pdev->dev, "missing ranges in device node\n");
+ return -EINVAL;
+ }
+
+ pci_v3.map_irq = pci_v3_map_irq_dt;
+ pci_common_init_dev(&pdev->dev, &pci_v3);
+
+ return 0;
+}
+
+#else
+
+static inline int pci_v3_dtprobe(struct platform_device *pdev,
+ struct device_node *np)
+{
+ return -EINVAL;
+}
+
+#endif
+
static int __init pci_v3_probe(struct platform_device *pdev)
{
+ struct device_node *np = pdev->dev.of_node;
int ret;
/* Remap the Integrator system controller */
return -ENODEV;
}
+ /* Device tree probe path */
+ if (np)
+ return pci_v3_dtprobe(pdev, np);
+
pci_v3_base = devm_ioremap(&pdev->dev, PHYS_PCI_V3_BASE, SZ_64K);
if (!pci_v3_base) {
dev_err(&pdev->dev, "unable to remap PCIv3 base\n");
return -ENODEV;
}
- pci_common_init(&pci_v3);
+ conf_mem.name = "PCIv3 config";
+ conf_mem.start = PHYS_PCI_CONFIG_BASE;
+ conf_mem.end = PHYS_PCI_CONFIG_BASE + SZ_16M - 1;
+ conf_mem.flags = IORESOURCE_MEM;
+
+ io_mem.name = "PCIv3 I/O";
+ io_mem.start = PHYS_PCI_IO_BASE;
+ io_mem.end = PHYS_PCI_IO_BASE + SZ_16M - 1;
+ io_mem.flags = IORESOURCE_MEM;
+
+ non_mem.name = "PCIv3 non-prefetched mem";
+ non_mem.start = PHYS_PCI_MEM_BASE + PCI_BUS_NONMEM_START;
+ non_mem.end = PHYS_PCI_MEM_BASE + PCI_BUS_NONMEM_START +
+ PCI_BUS_NONMEM_SIZE - 1;
+ non_mem.flags = IORESOURCE_MEM;
+
+ pre_mem.name = "PCIv3 prefetched mem";
+ pre_mem.start = PHYS_PCI_MEM_BASE + PCI_BUS_PREMEM_START;
+ pre_mem.end = PHYS_PCI_MEM_BASE + PCI_BUS_PREMEM_START +
+ PCI_BUS_PREMEM_SIZE - 1;
+ pre_mem.flags = IORESOURCE_MEM | IORESOURCE_PREFETCH;
+
+ pci_v3.map_irq = pci_v3_map_irq;
+
+ pci_common_init_dev(&pdev->dev, &pci_v3);
return 0;
}
+static const struct of_device_id pci_ids[] = {
+ { .compatible = "v3,v360epc-pci", },
+ {},
+};
+
static struct platform_driver pci_v3_driver = {
.driver = {
.name = "pci-v3",
+ .of_match_table = pci_ids,
},
};
projects / linux-imx.git / commitdiff