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Diffstat (limited to 'src/soc/intel/xeon_sp/skx')
-rw-r--r--src/soc/intel/xeon_sp/skx/chip.c128
1 files changed, 90 insertions, 38 deletions
diff --git a/src/soc/intel/xeon_sp/skx/chip.c b/src/soc/intel/xeon_sp/skx/chip.c
index fba1e1f7d0..7471814fa0 100644
--- a/src/soc/intel/xeon_sp/skx/chip.c
+++ b/src/soc/intel/xeon_sp/skx/chip.c
@@ -23,6 +23,66 @@ struct stack_dev_resource {
struct stack_dev_resource *next;
};
+typedef enum {
+ RES_TYPE_IO = 0,
+ RES_TYPE_NONPREF_MEM,
+ RES_TYPE_PREF_MEM,
+ MAX_RES_TYPES
+} RES_TYPE;
+
+static RES_TYPE get_res_type(uint64_t flags)
+{
+ if (flags & IORESOURCE_IO)
+ return RES_TYPE_IO;
+ if (flags & IORESOURCE_MEM) {
+ if (flags & IORESOURCE_PREFETCH) {
+ printk(BIOS_DEBUG, "%s:%d flags: 0x%llx\n", __func__, __LINE__, flags);
+ return RES_TYPE_PREF_MEM;
+ }
+ /* both 64-bit and 32-bit use below 4GB address space */
+ return RES_TYPE_NONPREF_MEM;
+ }
+ printk(BIOS_ERR, "Invalid resource type 0x%llx\n", flags);
+ die("");
+}
+
+static bool need_assignment(uint64_t flags)
+{
+ if (flags & (IORESOURCE_STORED | IORESOURCE_RESERVE | IORESOURCE_FIXED |
+ IORESOURCE_ASSIGNED))
+ return false;
+ else
+ return true;
+}
+
+static uint64_t get_resource_base(STACK_RES *stack, RES_TYPE res_type)
+{
+ if (res_type == RES_TYPE_IO) {
+ assert(stack->PciResourceIoBase <= stack->PciResourceIoLimit);
+ return stack->PciResourceIoBase;
+ }
+ if (res_type == RES_TYPE_NONPREF_MEM) {
+ assert(stack->PciResourceMem32Base <= stack->PciResourceMem32Limit);
+ return stack->PciResourceMem32Base;
+ }
+ assert(stack->PciResourceMem64Base <= stack->PciResourceMem64Limit);
+ return stack->PciResourceMem64Base;
+}
+
+static void set_resource_base(STACK_RES *stack, RES_TYPE res_type, uint64_t base)
+{
+ if (res_type == RES_TYPE_IO) {
+ assert(base <= (stack->PciResourceIoLimit + 1));
+ stack->PciResourceIoBase = base;
+ } else if (res_type == RES_TYPE_NONPREF_MEM) {
+ assert(base <= (stack->PciResourceMem32Limit + 1));
+ stack->PciResourceMem32Base = base;
+ } else {
+ assert(base <= (stack->PciResourceMem64Limit + 1));
+ stack->PciResourceMem64Base = base;
+ }
+}
+
static void assign_stack_resources(struct iiostack_resource *stack_list,
struct device *dev, struct resource *bridge);
@@ -167,19 +227,13 @@ static void add_res_to_stack(struct stack_dev_resource **root,
}
}
-static void reserve_dev_resources(STACK_RES *stack, unsigned long res_type,
+static void reserve_dev_resources(STACK_RES *stack, RES_TYPE res_type,
struct stack_dev_resource *res_root, struct resource *bridge)
{
uint8_t align;
uint64_t orig_base, base;
- if (res_type & IORESOURCE_IO)
- orig_base = stack->PciResourceIoBase;
- else if ((res_type & IORESOURCE_MEM) && ((res_type & IORESOURCE_PCI64) ||
- (!res_root && bridge && (bridge->flags & IORESOURCE_PREFETCH))))
- orig_base = stack->PciResourceMem64Base;
- else
- orig_base = stack->PciResourceMem32Base;
+ orig_base = get_resource_base(stack, res_type);
align = 0;
base = orig_base;
@@ -227,14 +281,7 @@ static void reserve_dev_resources(STACK_RES *stack, unsigned long res_type,
base = bridge->limit + 1;
}
- /* update new limits */
- if (res_type & IORESOURCE_IO)
- stack->PciResourceIoBase = base;
- else if ((res_type & IORESOURCE_MEM) && ((res_type & IORESOURCE_PCI64) ||
- (!res_root && bridge && (bridge->flags & IORESOURCE_PREFETCH))))
- stack->PciResourceMem64Base = base;
- else
- stack->PciResourceMem32Base = base;
+ set_resource_base(stack, res_type, base);
}
static void reclaim_resource_mem(struct stack_dev_resource *res_root)
@@ -264,15 +311,14 @@ static void assign_bridge_resources(struct iiostack_resource *stack_list,
for (res = dev->resource_list; res; res = res->next) {
if (!(res->flags & IORESOURCE_BRIDGE) ||
- (bridge && ((bridge->flags & (IORESOURCE_IO | IORESOURCE_MEM |
- IORESOURCE_PREFETCH | IORESOURCE_PCI64)) !=
- (res->flags & (IORESOURCE_IO | IORESOURCE_MEM |
- IORESOURCE_PREFETCH | IORESOURCE_PCI64)))))
+ (bridge && (get_res_type(bridge->flags) != get_res_type(res->flags))))
continue;
assign_stack_resources(stack_list, dev, res);
+
if (!bridge)
continue;
+
/* for 1st time update, overlading IORESOURCE_ASSIGNED */
if (!(bridge->flags & IORESOURCE_ASSIGNED)) {
bridge->base = res->base;
@@ -308,36 +354,42 @@ static void assign_stack_resources(struct iiostack_resource *stack_list,
assign_bridge_resources(stack_list, curdev, bridge);
/* Pick non-bridged resources for resource allocation for each resource type */
- unsigned long flags[5] = {IORESOURCE_IO, IORESOURCE_MEM,
- (IORESOURCE_PCI64|IORESOURCE_MEM), (IORESOURCE_MEM|IORESOURCE_PREFETCH),
- (IORESOURCE_PCI64|IORESOURCE_MEM|IORESOURCE_PREFETCH)};
- uint8_t no_res_types = 5;
+ RES_TYPE res_types[MAX_RES_TYPES] = {
+ RES_TYPE_IO,
+ RES_TYPE_NONPREF_MEM,
+ RES_TYPE_PREF_MEM
+ };
+
+ uint8_t no_res_types = MAX_RES_TYPES;
+
+ /* if it is a bridge, only process matching bridge resource type */
if (bridge) {
- flags[0] = bridge->flags &
- (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH);
- if ((bridge->flags & IORESOURCE_MEM) &&
- (bridge->flags & IORESOURCE_PREFETCH))
- flags[0] |= IORESOURCE_PCI64;
+ res_types[0] = get_res_type(bridge->flags);
no_res_types = 1;
}
+ printk(BIOS_DEBUG, "%s:%d no_res_types: %d\n", __func__, __LINE__,
+ no_res_types);
+
/* Process each resource type */
for (int rt = 0; rt < no_res_types; ++rt) {
struct stack_dev_resource *res_root = NULL;
-
+ printk(BIOS_DEBUG, "%s:%d rt: %d\n", __func__, __LINE__, rt);
for (curdev = bus->children; curdev; curdev = curdev->sibling) {
struct resource *res;
+ printk(BIOS_DEBUG, "%s:%d dev: %s\n",
+ __func__, __LINE__, dev_path(curdev));
if (!curdev->enabled)
continue;
for (res = curdev->resource_list; res; res = res->next) {
- if ((res->flags & IORESOURCE_BRIDGE) || (res->flags &
- (IORESOURCE_STORED | IORESOURCE_RESERVE |
- IORESOURCE_FIXED | IORESOURCE_ASSIGNED)
- ) || ((res->flags & (IORESOURCE_IO |
- IORESOURCE_MEM | IORESOURCE_PCI64
- | IORESOURCE_PREFETCH))
- != flags[rt]) || res->size == 0)
+ printk(BIOS_DEBUG, "%s:%d dev: %s, flags: 0x%lx\n",
+ __func__, __LINE__,
+ dev_path(curdev), res->flags);
+ if (res->size == 0 ||
+ get_res_type(res->flags) != res_types[rt] ||
+ (res->flags & IORESOURCE_BRIDGE) ||
+ !need_assignment(res->flags))
continue;
else
add_res_to_stack(&res_root, curdev, res);
@@ -346,7 +398,7 @@ static void assign_stack_resources(struct iiostack_resource *stack_list,
/* Allocate resources and update bridge range */
if (res_root || (bridge && !(bridge->flags & IORESOURCE_ASSIGNED))) {
- reserve_dev_resources(stack, flags[rt], res_root, bridge);
+ reserve_dev_resources(stack, res_types[rt], res_root, bridge);
reclaim_resource_mem(res_root);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 19:35:56 +0000