Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index 36891e7..3f6ef2f 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -42,7 +42,7 @@
} else {
node = of_node_get(bus->self->dev.of_node);
if (node && of_property_read_bool(node, "external-facing"))
- bus->self->untrusted = true;
+ bus->self->external_facing = true;
}
bus->dev.of_node = node;
@@ -236,7 +236,6 @@
}
EXPORT_SYMBOL_GPL(of_pci_check_probe_only);
-#if defined(CONFIG_OF_ADDRESS)
/**
* devm_of_pci_get_host_bridge_resources() - Resource-managed parsing of PCI
* host bridge resources from DT
@@ -244,6 +243,8 @@
* @busno: bus number associated with the bridge root bus
* @bus_max: maximum number of buses for this bridge
* @resources: list where the range of resources will be added after DT parsing
+ * @ib_resources: list where the range of inbound resources (with addresses
+ * from 'dma-ranges') will be added after DT parsing
* @io_base: pointer to a variable that will contain on return the physical
* address for the start of the I/O range. Can be NULL if the caller doesn't
* expect I/O ranges to be present in the device tree.
@@ -255,16 +256,18 @@
* It returns zero if the range parsing has been successful or a standard error
* value if it failed.
*/
-int devm_of_pci_get_host_bridge_resources(struct device *dev,
+static int devm_of_pci_get_host_bridge_resources(struct device *dev,
unsigned char busno, unsigned char bus_max,
- struct list_head *resources, resource_size_t *io_base)
+ struct list_head *resources,
+ struct list_head *ib_resources,
+ resource_size_t *io_base)
{
struct device_node *dev_node = dev->of_node;
struct resource *res, tmp_res;
struct resource *bus_range;
struct of_pci_range range;
struct of_pci_range_parser parser;
- char range_type[4];
+ const char *range_type;
int err;
if (io_base)
@@ -292,18 +295,18 @@
/* Check for ranges property */
err = of_pci_range_parser_init(&parser, dev_node);
if (err)
- goto failed;
+ return 0;
dev_dbg(dev, "Parsing ranges property...\n");
for_each_of_pci_range(&parser, &range) {
/* Read next ranges element */
if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_IO)
- snprintf(range_type, 4, " IO");
+ range_type = "IO";
else if ((range.flags & IORESOURCE_TYPE_BITS) == IORESOURCE_MEM)
- snprintf(range_type, 4, "MEM");
+ range_type = "MEM";
else
- snprintf(range_type, 4, "err");
- dev_info(dev, " %s %#010llx..%#010llx -> %#010llx\n",
+ range_type = "err";
+ dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n",
range_type, range.cpu_addr,
range.cpu_addr + range.size - 1, range.pci_addr);
@@ -340,14 +343,54 @@
pci_add_resource_offset(resources, res, res->start - range.pci_addr);
}
+ /* Check for dma-ranges property */
+ if (!ib_resources)
+ return 0;
+ err = of_pci_dma_range_parser_init(&parser, dev_node);
+ if (err)
+ return 0;
+
+ dev_dbg(dev, "Parsing dma-ranges property...\n");
+ for_each_of_pci_range(&parser, &range) {
+ struct resource_entry *entry;
+ /*
+ * If we failed translation or got a zero-sized region
+ * then skip this range
+ */
+ if (((range.flags & IORESOURCE_TYPE_BITS) != IORESOURCE_MEM) ||
+ range.cpu_addr == OF_BAD_ADDR || range.size == 0)
+ continue;
+
+ dev_info(dev, " %6s %#012llx..%#012llx -> %#012llx\n",
+ "IB MEM", range.cpu_addr,
+ range.cpu_addr + range.size - 1, range.pci_addr);
+
+
+ err = of_pci_range_to_resource(&range, dev_node, &tmp_res);
+ if (err)
+ continue;
+
+ res = devm_kmemdup(dev, &tmp_res, sizeof(tmp_res), GFP_KERNEL);
+ if (!res) {
+ err = -ENOMEM;
+ goto failed;
+ }
+
+ /* Keep the resource list sorted */
+ resource_list_for_each_entry(entry, ib_resources)
+ if (entry->res->start > res->start)
+ break;
+
+ pci_add_resource_offset(&entry->node, res,
+ res->start - range.pci_addr);
+ }
+
return 0;
failed:
pci_free_resource_list(resources);
return err;
}
-EXPORT_SYMBOL_GPL(devm_of_pci_get_host_bridge_resources);
-#endif /* CONFIG_OF_ADDRESS */
#if IS_ENABLED(CONFIG_OF_IRQ)
/**
@@ -480,25 +523,26 @@
EXPORT_SYMBOL_GPL(of_irq_parse_and_map_pci);
#endif /* CONFIG_OF_IRQ */
-int pci_parse_request_of_pci_ranges(struct device *dev,
- struct list_head *resources,
- struct resource **bus_range)
+static int pci_parse_request_of_pci_ranges(struct device *dev,
+ struct pci_host_bridge *bridge)
{
int err, res_valid = 0;
resource_size_t iobase;
struct resource_entry *win, *tmp;
- INIT_LIST_HEAD(resources);
- err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, resources,
- &iobase);
+ INIT_LIST_HEAD(&bridge->windows);
+ INIT_LIST_HEAD(&bridge->dma_ranges);
+
+ err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &bridge->windows,
+ &bridge->dma_ranges, &iobase);
if (err)
return err;
- err = devm_request_pci_bus_resources(dev, resources);
+ err = devm_request_pci_bus_resources(dev, &bridge->windows);
if (err)
- goto out_release_res;
+ return err;
- resource_list_for_each_entry_safe(win, tmp, resources) {
+ resource_list_for_each_entry_safe(win, tmp, &bridge->windows) {
struct resource *res = win->res;
switch (resource_type(res)) {
@@ -513,22 +557,24 @@
case IORESOURCE_MEM:
res_valid |= !(res->flags & IORESOURCE_PREFETCH);
break;
- case IORESOURCE_BUS:
- if (bus_range)
- *bus_range = res;
- break;
}
}
- if (res_valid)
+ if (!res_valid)
+ dev_warn(dev, "non-prefetchable memory resource required\n");
+
+ return 0;
+}
+
+int devm_of_pci_bridge_init(struct device *dev, struct pci_host_bridge *bridge)
+{
+ if (!dev->of_node)
return 0;
- dev_err(dev, "non-prefetchable memory resource required\n");
- err = -EINVAL;
+ bridge->swizzle_irq = pci_common_swizzle;
+ bridge->map_irq = of_irq_parse_and_map_pci;
- out_release_res:
- pci_free_resource_list(resources);
- return err;
+ return pci_parse_request_of_pci_ranges(dev, bridge);
}
#endif /* CONFIG_PCI */
@@ -547,7 +593,7 @@
u32 max_link_speed;
if (of_property_read_u32(node, "max-link-speed", &max_link_speed) ||
- max_link_speed > 4)
+ max_link_speed == 0 || max_link_speed > 4)
return -EINVAL;
return max_link_speed;