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| author |   Steve Wahl <steve.wahl@hpe.com> | 2022-02-18 11:54:18 -0600 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2022-03-01 16:19:01 +0100 |
| commit | 71a412ed4c104bcc239b1a8e06f90b58a4aee0bb (patch) | |
| tree | c486c0a612796ca84a60392158ae624c14969a7d | |
| parent | perf/x86/intel/pt: Add a capability and config bit for disabling TNTs (diff) | |
| download | linux-dev-71a412ed4c104bcc239b1a8e06f90b58a4aee0bb.tar.xz linux-dev-71a412ed4c104bcc239b1a8e06f90b58a4aee0bb.zip | |
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@hpe.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20220218175418.421268-1-steve.wahl@hpe.com
| -rw-r--r-- | arch/x86/events/intel/uncore_discovery.c | 16 | ||||
| -rw-r--r-- | 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 6ddadb482f68..61185d16fba2 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 cfaf558bdb6b..f4439357779a 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 |