#include <common.h>
#include <dm.h>
#include <errno.h>
-#include <fdtdec.h>
#include <inttypes.h>
#include <pci.h>
-#include <dm/lists.h>
-#include <dm/root.h>
+#include <asm/io.h>
#include <dm/device-internal.h>
+#include <dm/lists.h>
#if defined(CONFIG_X86) && defined(CONFIG_HAVE_FSP)
#include <asm/fsp/fsp_support.h>
#endif
+#include "pci_internal.h"
DECLARE_GLOBAL_DATA_PTR;
-static int pci_get_bus(int busnum, struct udevice **busp)
+int pci_get_bus(int busnum, struct udevice **busp)
{
int ret;
/* Since buses may not be numbered yet try a little harder with bus 0 */
if (ret == -ENODEV) {
- ret = uclass_first_device(UCLASS_PCI, busp);
+ ret = uclass_first_device_err(UCLASS_PCI, busp);
if (ret)
return ret;
- else if (!*busp)
- return -ENODEV;
ret = uclass_get_device_by_seq(UCLASS_PCI, busnum, busp);
}
return ret;
}
-struct pci_controller *pci_bus_to_hose(int busnum)
-{
- struct udevice *bus;
- int ret;
-
- ret = pci_get_bus(busnum, &bus);
- if (ret) {
- debug("%s: Cannot get bus %d: ret=%d\n", __func__, busnum, ret);
- return NULL;
- }
-
- return dev_get_uclass_priv(bus);
-}
-
struct udevice *pci_get_controller(struct udevice *dev)
{
while (device_is_on_pci_bus(dev))
return dev;
}
-pci_dev_t pci_get_bdf(struct udevice *dev)
+pci_dev_t dm_pci_get_bdf(struct udevice *dev)
{
struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
struct udevice *bus = dev->parent;
return -ENODEV;
}
-int pci_bus_find_bdf(pci_dev_t bdf, struct udevice **devp)
+int dm_pci_bus_find_bdf(pci_dev_t bdf, struct udevice **devp)
{
struct udevice *bus;
int ret;
return -ENODEV;
}
+static int dm_pci_bus_find_device(struct udevice *bus, unsigned int vendor,
+ unsigned int device, int *indexp,
+ struct udevice **devp)
+{
+ struct pci_child_platdata *pplat;
+ struct udevice *dev;
+
+ for (device_find_first_child(bus, &dev);
+ dev;
+ device_find_next_child(&dev)) {
+ pplat = dev_get_parent_platdata(dev);
+ if (pplat->vendor == vendor && pplat->device == device) {
+ if (!(*indexp)--) {
+ *devp = dev;
+ return 0;
+ }
+ }
+ }
+
+ return -ENODEV;
+}
+
+int dm_pci_find_device(unsigned int vendor, unsigned int device, int index,
+ struct udevice **devp)
+{
+ struct udevice *bus;
+
+ /* Scan all known buses */
+ for (uclass_first_device(UCLASS_PCI, &bus);
+ bus;
+ uclass_next_device(&bus)) {
+ if (!dm_pci_bus_find_device(bus, vendor, device, &index, devp))
+ return device_probe(*devp);
+ }
+ *devp = NULL;
+
+ return -ENODEV;
+}
+
+int dm_pci_find_class(uint find_class, int index, struct udevice **devp)
+{
+ struct udevice *dev;
+
+ /* Scan all known buses */
+ for (pci_find_first_device(&dev);
+ dev;
+ pci_find_next_device(&dev)) {
+ struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
+
+ if (pplat->class == find_class && !index--) {
+ *devp = dev;
+ return device_probe(*devp);
+ }
+ }
+ *devp = NULL;
+
+ return -ENODEV;
+}
+
int pci_bus_write_config(struct udevice *bus, pci_dev_t bdf, int offset,
unsigned long value, enum pci_size_t size)
{
return ops->write_config(bus, bdf, offset, value, size);
}
+int pci_bus_clrset_config32(struct udevice *bus, pci_dev_t bdf, int offset,
+ u32 clr, u32 set)
+{
+ ulong val;
+ int ret;
+
+ ret = pci_bus_read_config(bus, bdf, offset, &val, PCI_SIZE_32);
+ if (ret)
+ return ret;
+ val &= ~clr;
+ val |= set;
+
+ return pci_bus_write_config(bus, bdf, offset, val, PCI_SIZE_32);
+}
+
int pci_write_config(pci_dev_t bdf, int offset, unsigned long value,
enum pci_size_t size)
{
for (bus = dev; device_is_on_pci_bus(bus);)
bus = bus->parent;
- return pci_bus_write_config(bus, pci_get_bdf(dev), offset, value, size);
+ return pci_bus_write_config(bus, dm_pci_get_bdf(dev), offset, value,
+ size);
}
-
int pci_write_config32(pci_dev_t bdf, int offset, u32 value)
{
return pci_write_config(bdf, offset, value, PCI_SIZE_32);
for (bus = dev; device_is_on_pci_bus(bus);)
bus = bus->parent;
- return pci_bus_read_config(bus, pci_get_bdf(dev), offset, valuep,
+ return pci_bus_read_config(bus, dm_pci_get_bdf(dev), offset, valuep,
size);
}
return 0;
}
+int dm_pci_clrset_config8(struct udevice *dev, int offset, u32 clr, u32 set)
+{
+ u8 val;
+ int ret;
+
+ ret = dm_pci_read_config8(dev, offset, &val);
+ if (ret)
+ return ret;
+ val &= ~clr;
+ val |= set;
+
+ return dm_pci_write_config8(dev, offset, val);
+}
+
+int dm_pci_clrset_config16(struct udevice *dev, int offset, u32 clr, u32 set)
+{
+ u16 val;
+ int ret;
+
+ ret = dm_pci_read_config16(dev, offset, &val);
+ if (ret)
+ return ret;
+ val &= ~clr;
+ val |= set;
+
+ return dm_pci_write_config16(dev, offset, val);
+}
+
+int dm_pci_clrset_config32(struct udevice *dev, int offset, u32 clr, u32 set)
+{
+ u32 val;
+ int ret;
+
+ ret = dm_pci_read_config32(dev, offset, &val);
+ if (ret)
+ return ret;
+ val &= ~clr;
+ val |= set;
+
+ return dm_pci_write_config32(dev, offset, val);
+}
+
static void set_vga_bridge_bits(struct udevice *dev)
{
struct udevice *parent = dev->parent;
int ret;
debug("%s: device %s\n", __func__, dev->name);
- ret = pciauto_config_device(hose, pci_get_bdf(dev));
+ ret = dm_pciauto_config_device(dev);
if (ret < 0)
return ret;
max_bus = ret;
return sub_bus;
}
-int dm_pci_hose_probe_bus(struct pci_controller *hose, pci_dev_t bdf)
+int pci_generic_mmap_write_config(
+ struct udevice *bus,
+ int (*addr_f)(struct udevice *bus, pci_dev_t bdf, uint offset, void **addrp),
+ pci_dev_t bdf,
+ uint offset,
+ ulong value,
+ enum pci_size_t size)
+{
+ void *address;
+
+ if (addr_f(bus, bdf, offset, &address) < 0)
+ return 0;
+
+ switch (size) {
+ case PCI_SIZE_8:
+ writeb(value, address);
+ return 0;
+ case PCI_SIZE_16:
+ writew(value, address);
+ return 0;
+ case PCI_SIZE_32:
+ writel(value, address);
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+int pci_generic_mmap_read_config(
+ struct udevice *bus,
+ int (*addr_f)(struct udevice *bus, pci_dev_t bdf, uint offset, void **addrp),
+ pci_dev_t bdf,
+ uint offset,
+ ulong *valuep,
+ enum pci_size_t size)
+{
+ void *address;
+
+ if (addr_f(bus, bdf, offset, &address) < 0) {
+ *valuep = pci_get_ff(size);
+ return 0;
+ }
+
+ switch (size) {
+ case PCI_SIZE_8:
+ *valuep = readb(address);
+ return 0;
+ case PCI_SIZE_16:
+ *valuep = readw(address);
+ return 0;
+ case PCI_SIZE_32:
+ *valuep = readl(address);
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+int dm_pci_hose_probe_bus(struct udevice *bus)
{
- struct udevice *parent, *bus;
int sub_bus;
int ret;
debug("%s\n", __func__);
- parent = hose->bus;
-
- /* Find the bus within the parent */
- ret = pci_bus_find_devfn(parent, PCI_MASK_BUS(bdf), &bus);
- if (ret) {
- debug("%s: Cannot find device %x on bus %s: %d\n", __func__,
- bdf, parent->name, ret);
- return ret;
- }
sub_bus = pci_get_bus_max() + 1;
debug("%s: bus = %d/%s\n", __func__, sub_bus, bus->name);
- pciauto_prescan_setup_bridge(hose, bdf, sub_bus);
+ dm_pciauto_prescan_setup_bridge(bus, sub_bus);
ret = device_probe(bus);
if (ret) {
return -EPIPE;
}
sub_bus = pci_get_bus_max();
- pciauto_postscan_setup_bridge(hose, bdf, sub_bus);
+ dm_pciauto_postscan_setup_bridge(bus, sub_bus);
return sub_bus;
}
* pci_match_one_device - Tell if a PCI device structure has a matching
* PCI device id structure
* @id: single PCI device id structure to match
- * @dev: the PCI device structure to match against
+ * @find: the PCI device id structure to match against
*
- * Returns the matching pci_device_id structure or %NULL if there is no match.
+ * Returns true if the finding pci_device_id structure matched or false if
+ * there is no match.
*/
static bool pci_match_one_id(const struct pci_device_id *id,
const struct pci_device_id *find)
ret = device_bind_driver(parent, drv, str, devp);
if (ret) {
debug("%s: Failed to bind generic driver: %d\n", __func__, ret);
+ free(str);
return ret;
}
debug("%s: No match found: bound generic driver instead\n", __func__);
found_multi = false;
end = PCI_BDF(bus->seq, PCI_MAX_PCI_DEVICES - 1,
PCI_MAX_PCI_FUNCTIONS - 1);
- for (bdf = PCI_BDF(bus->seq, 0, 0); bdf < end;
+ for (bdf = PCI_BDF(bus->seq, 0, 0); bdf <= end;
bdf += PCI_BDF(0, 0, 1)) {
struct pci_child_platdata *pplat;
struct udevice *dev;
/* Find this device in the device tree */
ret = pci_bus_find_devfn(bus, PCI_MASK_BUS(bdf), &dev);
- /* Search for a driver */
-
- /* If nothing in the device tree, bind a generic device */
+ /* If nothing in the device tree, bind a device */
if (ret == -ENODEV) {
struct pci_device_id find_id;
ulong val;
return ret;
}
-static int pci_uclass_post_bind(struct udevice *bus)
-{
- /*
- * If there is no pci device listed in the device tree,
- * don't bother scanning the device tree.
- */
- if (bus->of_offset == -1)
- return 0;
-
- /*
- * Scan the device tree for devices. This does not probe the PCI bus,
- * as this is not permitted while binding. It just finds devices
- * mentioned in the device tree.
- *
- * Before relocation, only bind devices marked for pre-relocation
- * use.
- */
- return dm_scan_fdt_node(bus, gd->fdt_blob, bus->of_offset,
- gd->flags & GD_FLG_RELOC ? false : true);
-}
-
-static int decode_regions(struct pci_controller *hose, const void *blob,
- int parent_node, int node)
+static int decode_regions(struct pci_controller *hose, ofnode parent_node,
+ ofnode node)
{
int pci_addr_cells, addr_cells, size_cells;
- phys_addr_t base = 0, size;
int cells_per_record;
const u32 *prop;
int len;
int i;
- prop = fdt_getprop(blob, node, "ranges", &len);
+ prop = ofnode_get_property(node, "ranges", &len);
if (!prop)
return -EINVAL;
- pci_addr_cells = fdt_address_cells(blob, node);
- addr_cells = fdt_address_cells(blob, parent_node);
- size_cells = fdt_size_cells(blob, node);
+ pci_addr_cells = ofnode_read_simple_addr_cells(node);
+ addr_cells = ofnode_read_simple_addr_cells(parent_node);
+ size_cells = ofnode_read_simple_size_cells(node);
/* PCI addresses are always 3-cells */
len /= sizeof(u32);
}
/* Add a region for our local memory */
+#ifdef CONFIG_NR_DRAM_BANKS
+ bd_t *bd = gd->bd;
+
+ for (i = 0; i < CONFIG_NR_DRAM_BANKS; ++i) {
+ if (bd->bi_dram[i].size) {
+ pci_set_region(hose->regions + hose->region_count++,
+ bd->bi_dram[i].start,
+ bd->bi_dram[i].start,
+ bd->bi_dram[i].size,
+ PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
+ }
+ }
+#else
+ phys_addr_t base = 0, size;
+
size = gd->ram_size;
#ifdef CONFIG_SYS_SDRAM_BASE
base = CONFIG_SYS_SDRAM_BASE;
size = gd->pci_ram_top - base;
pci_set_region(hose->regions + hose->region_count++, base, base,
size, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
+#endif
return 0;
}
hose = bus->uclass_priv;
/* For bridges, use the top-level PCI controller */
- if (device_get_uclass_id(bus->parent) == UCLASS_ROOT) {
+ if (!device_is_on_pci_bus(bus)) {
hose->ctlr = bus;
- ret = decode_regions(hose, gd->fdt_blob, bus->parent->of_offset,
- bus->of_offset);
+ ret = decode_regions(hose, dev_ofnode(bus->parent),
+ dev_ofnode(bus));
if (ret) {
debug("%s: Cannot decode regions\n", __func__);
return ret;
struct fdt_pci_addr addr;
int ret;
- if (dev->of_offset == -1)
+ if (!dev_of_valid(dev))
return 0;
/*
* just check the address.
*/
pplat = dev_get_parent_platdata(dev);
- ret = fdtdec_get_pci_addr(gd->fdt_blob, dev->of_offset,
- FDT_PCI_SPACE_CONFIG, "reg", &addr);
+ ret = ofnode_read_pci_addr(dev_ofnode(dev), FDT_PCI_SPACE_CONFIG, "reg",
+ &addr);
if (ret) {
if (ret != -ENOENT)
return (*iop != NULL) + (*memp != NULL) + (*prefp != NULL);
}
+u32 dm_pci_read_bar32(struct udevice *dev, int barnum)
+{
+ u32 addr;
+ int bar;
+
+ bar = PCI_BASE_ADDRESS_0 + barnum * 4;
+ dm_pci_read_config32(dev, bar, &addr);
+ if (addr & PCI_BASE_ADDRESS_SPACE_IO)
+ return addr & PCI_BASE_ADDRESS_IO_MASK;
+ else
+ return addr & PCI_BASE_ADDRESS_MEM_MASK;
+}
+
+void dm_pci_write_bar32(struct udevice *dev, int barnum, u32 addr)
+{
+ int bar;
+
+ bar = PCI_BASE_ADDRESS_0 + barnum * 4;
+ dm_pci_write_config32(dev, bar, addr);
+}
+
+static int _dm_pci_bus_to_phys(struct udevice *ctlr,
+ pci_addr_t bus_addr, unsigned long flags,
+ unsigned long skip_mask, phys_addr_t *pa)
+{
+ struct pci_controller *hose = dev_get_uclass_priv(ctlr);
+ struct pci_region *res;
+ int i;
+
+ for (i = 0; i < hose->region_count; i++) {
+ res = &hose->regions[i];
+
+ if (((res->flags ^ flags) & PCI_REGION_TYPE) != 0)
+ continue;
+
+ if (res->flags & skip_mask)
+ continue;
+
+ if (bus_addr >= res->bus_start &&
+ (bus_addr - res->bus_start) < res->size) {
+ *pa = (bus_addr - res->bus_start + res->phys_start);
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+phys_addr_t dm_pci_bus_to_phys(struct udevice *dev, pci_addr_t bus_addr,
+ unsigned long flags)
+{
+ phys_addr_t phys_addr = 0;
+ struct udevice *ctlr;
+ int ret;
+
+ /* The root controller has the region information */
+ ctlr = pci_get_controller(dev);
+
+ /*
+ * if PCI_REGION_MEM is set we do a two pass search with preference
+ * on matches that don't have PCI_REGION_SYS_MEMORY set
+ */
+ if ((flags & PCI_REGION_TYPE) == PCI_REGION_MEM) {
+ ret = _dm_pci_bus_to_phys(ctlr, bus_addr,
+ flags, PCI_REGION_SYS_MEMORY,
+ &phys_addr);
+ if (!ret)
+ return phys_addr;
+ }
+
+ ret = _dm_pci_bus_to_phys(ctlr, bus_addr, flags, 0, &phys_addr);
+
+ if (ret)
+ puts("pci_hose_bus_to_phys: invalid physical address\n");
+
+ return phys_addr;
+}
+
+int _dm_pci_phys_to_bus(struct udevice *dev, phys_addr_t phys_addr,
+ unsigned long flags, unsigned long skip_mask,
+ pci_addr_t *ba)
+{
+ struct pci_region *res;
+ struct udevice *ctlr;
+ pci_addr_t bus_addr;
+ int i;
+ struct pci_controller *hose;
+
+ /* The root controller has the region information */
+ ctlr = pci_get_controller(dev);
+ hose = dev_get_uclass_priv(ctlr);
+
+ for (i = 0; i < hose->region_count; i++) {
+ res = &hose->regions[i];
+
+ if (((res->flags ^ flags) & PCI_REGION_TYPE) != 0)
+ continue;
+
+ if (res->flags & skip_mask)
+ continue;
+
+ bus_addr = phys_addr - res->phys_start + res->bus_start;
+
+ if (bus_addr >= res->bus_start &&
+ (bus_addr - res->bus_start) < res->size) {
+ *ba = bus_addr;
+ return 0;
+ }
+ }
+
+ return 1;
+}
+
+pci_addr_t dm_pci_phys_to_bus(struct udevice *dev, phys_addr_t phys_addr,
+ unsigned long flags)
+{
+ pci_addr_t bus_addr = 0;
+ int ret;
+
+ /*
+ * if PCI_REGION_MEM is set we do a two pass search with preference
+ * on matches that don't have PCI_REGION_SYS_MEMORY set
+ */
+ if ((flags & PCI_REGION_TYPE) == PCI_REGION_MEM) {
+ ret = _dm_pci_phys_to_bus(dev, phys_addr, flags,
+ PCI_REGION_SYS_MEMORY, &bus_addr);
+ if (!ret)
+ return bus_addr;
+ }
+
+ ret = _dm_pci_phys_to_bus(dev, phys_addr, flags, 0, &bus_addr);
+
+ if (ret)
+ puts("pci_hose_phys_to_bus: invalid physical address\n");
+
+ return bus_addr;
+}
+
+void *dm_pci_map_bar(struct udevice *dev, int bar, int flags)
+{
+ pci_addr_t pci_bus_addr;
+ u32 bar_response;
+
+ /* read BAR address */
+ dm_pci_read_config32(dev, bar, &bar_response);
+ pci_bus_addr = (pci_addr_t)(bar_response & ~0xf);
+
+ /*
+ * Pass "0" as the length argument to pci_bus_to_virt. The arg
+ * isn't actualy used on any platform because u-boot assumes a static
+ * linear mapping. In the future, this could read the BAR size
+ * and pass that as the size if needed.
+ */
+ return dm_pci_bus_to_virt(dev, pci_bus_addr, flags, 0, MAP_NOCACHE);
+}
+
UCLASS_DRIVER(pci) = {
.id = UCLASS_PCI,
.name = "pci",
.flags = DM_UC_FLAG_SEQ_ALIAS,
- .post_bind = pci_uclass_post_bind,
+ .post_bind = dm_scan_fdt_dev,
.pre_probe = pci_uclass_pre_probe,
.post_probe = pci_uclass_post_probe,
.child_post_bind = pci_uclass_child_post_bind,
.id = UCLASS_PCI_GENERIC,
.of_match = pci_generic_ids,
};
+
+void pci_init(void)
+{
+ struct udevice *bus;
+
+ /*
+ * Enumerate all known controller devices. Enumeration has the side-
+ * effect of probing them, so PCIe devices will be enumerated too.
+ */
+ for (uclass_first_device(UCLASS_PCI, &bus);
+ bus;
+ uclass_next_device(&bus)) {
+ ;
+ }
+}
projects / people / ms / u-boot.git / blobdiff