summaryrefslogtreecommitdiffstats
path: root/src/device/resource_allocator_v4.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/device/resource_allocator_v4.c')
-rw-r--r--src/device/resource_allocator_v4.c133
1 files changed, 69 insertions, 64 deletions
diff --git a/src/device/resource_allocator_v4.c b/src/device/resource_allocator_v4.c
index 511c4505dbcd..2f4ea124f834 100644
--- a/src/device/resource_allocator_v4.c
+++ b/src/device/resource_allocator_v4.c
@@ -215,14 +215,14 @@ static void compute_domain_resources(const struct device *domain)
}
}
-static unsigned char get_alignment_by_resource_type(const struct resource *res)
+static unsigned char get_alignment_by_resource_type(const unsigned long type)
{
- if (res->flags & IORESOURCE_MEM)
+ if (type & IORESOURCE_MEM)
return 12; /* Page-aligned --> log2(4KiB) */
- else if (res->flags & IORESOURCE_IO)
+ else if (type & IORESOURCE_IO)
return 0; /* No special alignment required --> log2(1) */
- die("Unexpected resource type: flags(%lu)!\n", res->flags);
+ die("Unexpected resource type: flags(%lu)!\n", type);
}
/*
@@ -303,20 +303,31 @@ static void initialize_domain_mem_resource_memranges(struct memranges *ranges,
* satisfy resource requests from downstream devices for allocations
* above 4G.
*/
-static void initialize_domain_memranges(struct memranges *ranges, const struct resource *res,
+static void initialize_domain_memranges(const struct device *dev, struct memranges *ranges,
unsigned long memrange_type)
{
- unsigned char align = get_alignment_by_resource_type(res);
+ unsigned char align = get_alignment_by_resource_type(memrange_type);
memranges_init_empty_with_alignment(ranges, NULL, 0, align);
- if (is_resource_invalid(res))
- return;
+ struct resource *res;
+ for (res = dev->resource_list; res != NULL; res = res->next) {
+ if (is_resource_invalid(res))
+ continue;
+ if (res->flags & IORESOURCE_FIXED)
+ continue;
+ if ((res->flags & IORESOURCE_TYPE_MASK) != memrange_type)
+ continue;
- if (res->flags & IORESOURCE_IO)
- initialize_domain_io_resource_memranges(ranges, res, memrange_type);
- else
- initialize_domain_mem_resource_memranges(ranges, res, memrange_type);
+ printk(BIOS_DEBUG, "%s %s: base: %llx size: %llx align: %d gran: %d limit: %llx\n",
+ dev_path(dev), resource2str(res), res->base, res->size, res->align,
+ res->gran, res->limit);
+
+ if (res->flags & IORESOURCE_IO)
+ initialize_domain_io_resource_memranges(ranges, res, memrange_type);
+ else
+ initialize_domain_mem_resource_memranges(ranges, res, memrange_type);
+ }
}
/*
@@ -335,15 +346,22 @@ static void initialize_domain_memranges(struct memranges *ranges, const struct r
* downstream resources of the same type under the bridge get allocated
* above 4G.
*/
-static void initialize_bridge_memranges(struct memranges *ranges, const struct resource *res,
+static void initialize_bridge_memranges(const struct device *dev, struct memranges *ranges,
unsigned long memrange_type)
{
- unsigned char align = get_alignment_by_resource_type(res);
+ unsigned char align = get_alignment_by_resource_type(memrange_type);
memranges_init_empty_with_alignment(ranges, NULL, 0, align);
- if (is_resource_invalid(res))
- return;
+ struct resource *res;
+ for (res = dev->resource_list; res != NULL; res = res->next) {
+ if (is_resource_invalid(res))
+ continue;
+ if (res->flags & IORESOURCE_FIXED)
+ continue;
+ if ((res->flags & (IORESOURCE_TYPE_MASK | IORESOURCE_PREFETCH)) == memrange_type)
+ break;
+ }
memranges_insert(ranges, res->base, res->limit - res->base + 1, memrange_type);
}
@@ -485,32 +503,41 @@ static void constrain_domain_resources(const struct device *domain, struct memra
* windows which cannot be used for resource allocation as fixed
* resources.
*/
-static void setup_resource_ranges(const struct device *dev, const struct resource *res,
- unsigned long type, struct memranges *ranges)
+static void setup_resource_ranges(const struct device *dev, unsigned long type,
+ struct memranges *ranges)
{
- printk(BIOS_DEBUG, "%s %s: base: %llx size: %llx align: %d gran: %d limit: %llx\n",
- dev_path(dev), resource2str(res), res->base, res->size, res->align,
- res->gran, res->limit);
-
if (dev->path.type == DEVICE_PATH_DOMAIN) {
- initialize_domain_memranges(ranges, res, type);
+ initialize_domain_memranges(dev, ranges, type);
constrain_domain_resources(dev, ranges, type);
} else {
- initialize_bridge_memranges(ranges, res, type);
+ initialize_bridge_memranges(dev, ranges, type);
}
print_resource_ranges(dev, ranges);
}
-static void cleanup_resource_ranges(const struct device *dev, struct memranges *ranges,
- const struct resource *res)
+static void print_resource_done(const struct device *dev, const struct resource *res)
{
- memranges_teardown(ranges);
printk(BIOS_DEBUG, "%s %s: base: %llx size: %llx align: %d gran: %d limit: %llx done\n",
dev_path(dev), resource2str(res), res->base, res->size, res->align,
res->gran, res->limit);
}
+static void cleanup_domain_resource_ranges(const struct device *dev, struct memranges *ranges,
+ unsigned long type)
+{
+ memranges_teardown(ranges);
+ for (struct resource *res = dev->resource_list; res != NULL; res = res->next) {
+ if (is_resource_invalid(res))
+ continue;
+ if (res->flags & IORESOURCE_FIXED)
+ continue;
+ if ((res->flags & IORESOURCE_TYPE_MASK) != type)
+ continue;
+ print_resource_done(dev, res);
+ }
+}
+
/*
* Pass 2 of the resource allocator at the bridge level loops through
* all the resources for the bridge and generates a list of memory
@@ -547,9 +574,10 @@ static void allocate_bridge_resources(const struct device *bridge)
type_match = res->flags & type_mask;
- setup_resource_ranges(bridge, res, type_match, &ranges);
+ setup_resource_ranges(bridge, type_match, &ranges);
allocate_child_resources(bus, &ranges, type_mask, type_match);
- cleanup_resource_ranges(bridge, &ranges, res);
+ print_resource_done(bridge, res);
+ memranges_teardown(&ranges);
}
for (child = bus->children; child; child = child->sibling) {
@@ -560,22 +588,6 @@ static void allocate_bridge_resources(const struct device *bridge)
}
}
-static const struct resource *find_domain_resource(const struct device *domain,
- unsigned long type)
-{
- const struct resource *res;
-
- for (res = domain->resource_list; res; res = res->next) {
- if (res->flags & IORESOURCE_FIXED)
- continue;
-
- if ((res->flags & IORESOURCE_TYPE_MASK) == type)
- return res;
- }
-
- return NULL;
-}
-
/*
* Pass 2 of resource allocator begins at the domain level. Every domain
* has two types of resources - io and mem. For each of these resources,
@@ -593,16 +605,12 @@ static void allocate_domain_resources(const struct device *domain)
{
struct memranges ranges;
struct device *child;
- const struct resource *res;
/* Resource type I/O */
- res = find_domain_resource(domain, IORESOURCE_IO);
- if (res) {
- setup_resource_ranges(domain, res, IORESOURCE_IO, &ranges);
- allocate_child_resources(domain->link_list, &ranges, IORESOURCE_TYPE_MASK,
- IORESOURCE_IO);
- cleanup_resource_ranges(domain, &ranges, res);
- }
+ setup_resource_ranges(domain, IORESOURCE_IO, &ranges);
+ allocate_child_resources(domain->link_list, &ranges, IORESOURCE_TYPE_MASK,
+ IORESOURCE_IO);
+ cleanup_domain_resource_ranges(domain, &ranges, IORESOURCE_IO);
/*
* Resource type Mem:
@@ -621,17 +629,14 @@ static void allocate_domain_resources(const struct device *domain)
* the 4G boundary are handled separately by setting the type_mask and
* type_match to allocate_child_resources() accordingly.
*/
- res = find_domain_resource(domain, IORESOURCE_MEM);
- if (res) {
- setup_resource_ranges(domain, res, IORESOURCE_MEM, &ranges);
- allocate_child_resources(domain->link_list, &ranges,
- IORESOURCE_TYPE_MASK | IORESOURCE_ABOVE_4G,
- IORESOURCE_MEM);
- allocate_child_resources(domain->link_list, &ranges,
- IORESOURCE_TYPE_MASK | IORESOURCE_ABOVE_4G,
- IORESOURCE_MEM | IORESOURCE_ABOVE_4G);
- cleanup_resource_ranges(domain, &ranges, res);
- }
+ setup_resource_ranges(domain, IORESOURCE_MEM, &ranges);
+ allocate_child_resources(domain->link_list, &ranges,
+ IORESOURCE_TYPE_MASK | IORESOURCE_ABOVE_4G,
+ IORESOURCE_MEM);
+ allocate_child_resources(domain->link_list, &ranges,
+ IORESOURCE_TYPE_MASK | IORESOURCE_ABOVE_4G,
+ IORESOURCE_MEM | IORESOURCE_ABOVE_4G);
+ cleanup_domain_resource_ranges(domain, &ranges, IORESOURCE_MEM);
for (child = domain->link_list->children; child; child = child->sibling) {
if (!dev_has_children(child))
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-13 07:04:05 +0000