Merge tag 'ti-v2020.07-rc3' of https://gitlab.denx.de/u-boot/custodians/u-boot-ti

[oweals/u-boot.git] / drivers / pci / pci-uclass.c

diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 5be2dfd0bf64b19d633477d2bcbdeda6bc334fb0..9ab3539a49cae58c093d644c7a7f1cb93a275e1e 100644 (file)
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -7,6 +7,9 @@
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
+#include <init.h>
+#include <log.h>
+#include <malloc.h>
 #include <pci.h>
 #include <asm/io.h>
 #include <dm/device-internal.h>
@@ -14,6 +17,7 @@
 #if defined(CONFIG_X86) && defined(CONFIG_HAVE_FSP)
 #include <asm/fsp/fsp_support.h>
 #endif
+#include <linux/delay.h>
 #include "pci_internal.h"
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -43,7 +47,7 @@ struct udevice *pci_get_controller(struct udevice *dev)
        return dev;
 }
 
-pci_dev_t dm_pci_get_bdf(struct udevice *dev)
+pci_dev_t dm_pci_get_bdf(const struct udevice *dev)
 {
        struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
        struct udevice *bus = dev->parent;
@@ -124,7 +128,7 @@ static void pci_dev_find_ofnode(struct udevice *bus, phys_addr_t bdf,
        }
 };
 
-int pci_bus_find_devfn(struct udevice *bus, pci_dev_t find_devfn,
+int pci_bus_find_devfn(const struct udevice *bus, pci_dev_t find_devfn,
                       struct udevice **devp)
 {
        struct udevice *dev;
@@ -349,7 +353,7 @@ int dm_pci_write_config32(struct udevice *dev, int offset, u32 value)
        return dm_pci_write_config(dev, offset, value, PCI_SIZE_32);
 }
 
-int pci_bus_read_config(struct udevice *bus, pci_dev_t bdf, int offset,
+int pci_bus_read_config(const struct udevice *bus, pci_dev_t bdf, int offset,
                        unsigned long *valuep, enum pci_size_t size)
 {
        struct dm_pci_ops *ops;
@@ -373,10 +377,10 @@ int pci_read_config(pci_dev_t bdf, int offset, unsigned long *valuep,
        return pci_bus_read_config(bus, bdf, offset, valuep, size);
 }
 
-int dm_pci_read_config(struct udevice *dev, int offset, unsigned long *valuep,
-                      enum pci_size_t size)
+int dm_pci_read_config(const struct udevice *dev, int offset,
+                      unsigned long *valuep, enum pci_size_t size)
 {
-       struct udevice *bus;
+       const struct udevice *bus;
 
        for (bus = dev; device_is_on_pci_bus(bus);)
                bus = bus->parent;
@@ -423,7 +427,7 @@ int pci_read_config8(pci_dev_t bdf, int offset, u8 *valuep)
        return 0;
 }
 
-int dm_pci_read_config8(struct udevice *dev, int offset, u8 *valuep)
+int dm_pci_read_config8(const struct udevice *dev, int offset, u8 *valuep)
 {
        unsigned long value;
        int ret;
@@ -436,7 +440,7 @@ int dm_pci_read_config8(struct udevice *dev, int offset, u8 *valuep)
        return 0;
 }
 
-int dm_pci_read_config16(struct udevice *dev, int offset, u16 *valuep)
+int dm_pci_read_config16(const struct udevice *dev, int offset, u16 *valuep)
 {
        unsigned long value;
        int ret;
@@ -449,7 +453,7 @@ int dm_pci_read_config16(struct udevice *dev, int offset, u16 *valuep)
        return 0;
 }
 
-int dm_pci_read_config32(struct udevice *dev, int offset, u32 *valuep)
+int dm_pci_read_config32(const struct udevice *dev, int offset, u32 *valuep)
 {
        unsigned long value;
        int ret;
@@ -535,6 +539,8 @@ int pci_auto_config_devices(struct udevice *bus)
                int ret;
 
                debug("%s: device %s\n", __func__, dev->name);
+               if (dev_read_bool(dev, "pci,no-autoconfig"))
+                       continue;
                ret = dm_pciauto_config_device(dev);
                if (ret < 0)
                        return ret;
@@ -551,8 +557,9 @@ int pci_auto_config_devices(struct udevice *bus)
 }
 
 int pci_generic_mmap_write_config(
-       struct udevice *bus,
-       int (*addr_f)(struct udevice *bus, pci_dev_t bdf, uint offset, void **addrp),
+       const struct udevice *bus,
+       int (*addr_f)(const struct udevice *bus, pci_dev_t bdf, uint offset,
+                     void **addrp),
        pci_dev_t bdf,
        uint offset,
        ulong value,
@@ -579,8 +586,9 @@ int pci_generic_mmap_write_config(
 }
 
 int pci_generic_mmap_read_config(
-       struct udevice *bus,
-       int (*addr_f)(struct udevice *bus, pci_dev_t bdf, uint offset, void **addrp),
+       const struct udevice *bus,
+       int (*addr_f)(const struct udevice *bus, pci_dev_t bdf, uint offset,
+                     void **addrp),
        pci_dev_t bdf,
        uint offset,
        ulong *valuep,
@@ -1004,7 +1012,7 @@ static int pci_uclass_post_probe(struct udevice *bus)
        if (ret)
                return ret;
 
-       if (CONFIG_IS_ENABLED(PCI_PNP) &&
+       if (CONFIG_IS_ENABLED(PCI_PNP) && ll_boot_init() &&
            (!hose->skip_auto_config_until_reloc ||
             (gd->flags & GD_FLG_RELOC))) {
                ret = pci_auto_config_devices(bus);
@@ -1026,7 +1034,7 @@ static int pci_uclass_post_probe(struct udevice *bus)
         * Note we only call this 1) after U-Boot is relocated, and 2)
         * root bus has finished probing.
         */
-       if ((gd->flags & GD_FLG_RELOC) && (bus->seq == 0)) {
+       if ((gd->flags & GD_FLG_RELOC) && bus->seq == 0 && ll_boot_init()) {
                ret = fsp_init_phase_pci();
                if (ret)
                        return ret;
@@ -1054,7 +1062,7 @@ static int pci_uclass_child_post_bind(struct udevice *dev)
        return 0;
 }
 
-static int pci_bridge_read_config(struct udevice *bus, pci_dev_t bdf,
+static int pci_bridge_read_config(const struct udevice *bus, pci_dev_t bdf,
                                  uint offset, ulong *valuep,
                                  enum pci_size_t size)
 {
@@ -1201,14 +1209,21 @@ int pci_get_regions(struct udevice *dev, struct pci_region **iop,
        return (*iop != NULL) + (*memp != NULL) + (*prefp != NULL);
 }
 
-u32 dm_pci_read_bar32(struct udevice *dev, int barnum)
+u32 dm_pci_read_bar32(const 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)
+
+       /*
+        * If we get an invalid address, return this so that comparisons with
+        * FDT_ADDR_T_NONE work correctly
+        */
+       if (addr == 0xffffffff)
+               return addr;
+       else if (addr & PCI_BASE_ADDRESS_SPACE_IO)
                return addr & PCI_BASE_ADDRESS_IO_MASK;
        else
                return addr & PCI_BASE_ADDRESS_MEM_MASK;