The following commit has been merged into the perf/core branch of tip:
Commit-ID: 71a412ed4c104bcc239b1a8e06f90b58a4aee0bb
Gitweb: https://git.kernel.org/tip/71a412ed4c104bcc239b1a8e06f90b58a4aee0bb
Author: Steve Wahl <steve.wahl@xxxxxxx>
AuthorDate: Fri, 18 Feb 2022 11:54:18 -06:00
Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Tue, 01 Mar 2022 16:19:01 +01:00
perf/x86/intel/uncore: Make uncore_discovery clean for 64 bit addresses
Support 64-bit BAR size for discovery, and do not truncate return from
generic_uncore_mmio_box_ctl() to 32 bits.
Signed-off-by: Steve Wahl <steve.wahl@xxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Reviewed-by: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220218175418.421268-1-steve.wahl@xxxxxxx
---
arch/x86/events/intel/uncore_discovery.c | 16 +++++++++++-----
arch/x86/events/intel/uncore_discovery.h | 2 --
2 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/arch/x86/events/intel/uncore_discovery.c b/arch/x86/events/intel/uncore_discovery.c
index 6ddadb4..61185d1 100644
--- a/arch/x86/events/intel/uncore_discovery.c
+++ b/arch/x86/events/intel/uncore_discovery.c
@@ -210,15 +210,21 @@ static int parse_discovery_table(struct pci_dev *dev, int die,
void __iomem *io_addr;
resource_size_t addr;
unsigned long size;
- u32 val;
+ u32 val, val2;
int i;
pci_read_config_dword(dev, bar_offset, &val);
- if (val & UNCORE_DISCOVERY_MASK)
+ if (val & ~PCI_BASE_ADDRESS_MEM_MASK & ~PCI_BASE_ADDRESS_MEM_TYPE_64)
return -EINVAL;
- addr = (resource_size_t)(val & ~UNCORE_DISCOVERY_MASK);
+ addr = (resource_size_t)(val & PCI_BASE_ADDRESS_MEM_MASK);
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+ if ((val & PCI_BASE_ADDRESS_MEM_TYPE_MASK) == PCI_BASE_ADDRESS_MEM_TYPE_64) {
+ pci_read_config_dword(dev, bar_offset + 4, &val2);
+ addr |= ((resource_size_t)val2) << 32;
+ }
+#endif
size = UNCORE_DISCOVERY_GLOBAL_MAP_SIZE;
io_addr = ioremap(addr, size);
if (!io_addr)
@@ -444,7 +450,7 @@ static struct intel_uncore_ops generic_uncore_pci_ops = {
#define UNCORE_GENERIC_MMIO_SIZE 0x4000
-static unsigned int generic_uncore_mmio_box_ctl(struct intel_uncore_box *box)
+static u64 generic_uncore_mmio_box_ctl(struct intel_uncore_box *box)
{
struct intel_uncore_type *type = box->pmu->type;
@@ -456,7 +462,7 @@ static unsigned int generic_uncore_mmio_box_ctl(struct intel_uncore_box *box)
void intel_generic_uncore_mmio_init_box(struct intel_uncore_box *box)
{
- unsigned int box_ctl = generic_uncore_mmio_box_ctl(box);
+ u64 box_ctl = generic_uncore_mmio_box_ctl(box);
struct intel_uncore_type *type = box->pmu->type;
resource_size_t addr;
diff --git a/arch/x86/events/intel/uncore_discovery.h b/arch/x86/events/intel/uncore_discovery.h
index cfaf558..f443935 100644
--- a/arch/x86/events/intel/uncore_discovery.h
+++ b/arch/x86/events/intel/uncore_discovery.h
@@ -18,8 +18,6 @@
#define UNCORE_DISCOVERY_BIR_BASE 0x10
/* Discovery table BAR step */
#define UNCORE_DISCOVERY_BIR_STEP 0x4
-/* Mask of the discovery table offset */
-#define UNCORE_DISCOVERY_MASK 0xf
/* Global discovery table size */
#define UNCORE_DISCOVERY_GLOBAL_MAP_SIZE 0x20
|