d6c7541304
The discovery table provides the generic uncore block information for the MSR type of uncore blocks, e.g., the counter width, the number of counters, the location of control/counter registers, which is good enough to provide basic uncore support. It can be used as a fallback solution when the kernel doesn't support a platform. The name of the uncore box cannot be retrieved from the discovery table. uncore_type_&typeID_&boxID will be used as its name. Save the type ID and the box ID information in the struct intel_uncore_type. Factor out uncore_get_pmu_name() to handle different naming methods. Implement generic support for the MSR type of uncore block. Some advanced features, such as filters and constraints, cannot be retrieved from discovery tables. Features that rely on that information are not be supported here. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/1616003977-90612-3-git-send-email-kan.liang@linux.intel.com
124 lines
3.2 KiB
C
124 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Generic device ID of a discovery table device */
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#define UNCORE_DISCOVERY_TABLE_DEVICE 0x09a7
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/* Capability ID for a discovery table device */
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#define UNCORE_EXT_CAP_ID_DISCOVERY 0x23
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/* First DVSEC offset */
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#define UNCORE_DISCOVERY_DVSEC_OFFSET 0x8
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/* Mask of the supported discovery entry type */
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#define UNCORE_DISCOVERY_DVSEC_ID_MASK 0xffff
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/* PMON discovery entry type ID */
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#define UNCORE_DISCOVERY_DVSEC_ID_PMON 0x1
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/* Second DVSEC offset */
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#define UNCORE_DISCOVERY_DVSEC2_OFFSET 0xc
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/* Mask of the discovery table BAR offset */
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#define UNCORE_DISCOVERY_DVSEC2_BIR_MASK 0x7
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/* Discovery table BAR base offset */
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#define UNCORE_DISCOVERY_BIR_BASE 0x10
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/* Discovery table BAR step */
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#define UNCORE_DISCOVERY_BIR_STEP 0x4
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/* Mask of the discovery table offset */
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#define UNCORE_DISCOVERY_MASK 0xf
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/* Global discovery table size */
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#define UNCORE_DISCOVERY_GLOBAL_MAP_SIZE 0x20
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#define uncore_discovery_invalid_unit(unit) \
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(!unit.table1 || !unit.ctl || !unit.table3 || \
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unit.table1 == -1ULL || unit.ctl == -1ULL || \
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unit.table3 == -1ULL)
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#define GENERIC_PMON_CTL_EV_SEL_MASK 0x000000ff
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#define GENERIC_PMON_CTL_UMASK_MASK 0x0000ff00
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#define GENERIC_PMON_CTL_EDGE_DET (1 << 18)
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#define GENERIC_PMON_CTL_INVERT (1 << 23)
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#define GENERIC_PMON_CTL_TRESH_MASK 0xff000000
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#define GENERIC_PMON_RAW_EVENT_MASK (GENERIC_PMON_CTL_EV_SEL_MASK | \
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GENERIC_PMON_CTL_UMASK_MASK | \
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GENERIC_PMON_CTL_EDGE_DET | \
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GENERIC_PMON_CTL_INVERT | \
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GENERIC_PMON_CTL_TRESH_MASK)
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#define GENERIC_PMON_BOX_CTL_FRZ (1 << 0)
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#define GENERIC_PMON_BOX_CTL_RST_CTRL (1 << 8)
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#define GENERIC_PMON_BOX_CTL_RST_CTRS (1 << 9)
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#define GENERIC_PMON_BOX_CTL_INT (GENERIC_PMON_BOX_CTL_RST_CTRL | \
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GENERIC_PMON_BOX_CTL_RST_CTRS)
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enum uncore_access_type {
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UNCORE_ACCESS_MSR = 0,
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UNCORE_ACCESS_MMIO,
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UNCORE_ACCESS_PCI,
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UNCORE_ACCESS_MAX,
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};
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struct uncore_global_discovery {
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union {
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u64 table1;
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struct {
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u64 type : 8,
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stride : 8,
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max_units : 10,
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__reserved_1 : 36,
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access_type : 2;
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};
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};
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u64 ctl; /* Global Control Address */
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union {
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u64 table3;
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struct {
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u64 status_offset : 8,
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num_status : 16,
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__reserved_2 : 40;
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};
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};
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};
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struct uncore_unit_discovery {
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union {
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u64 table1;
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struct {
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u64 num_regs : 8,
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ctl_offset : 8,
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bit_width : 8,
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ctr_offset : 8,
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status_offset : 8,
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__reserved_1 : 22,
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access_type : 2;
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};
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};
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u64 ctl; /* Unit Control Address */
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union {
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u64 table3;
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struct {
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u64 box_type : 16,
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box_id : 16,
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__reserved_2 : 32;
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};
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};
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};
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struct intel_uncore_discovery_type {
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struct rb_node node;
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enum uncore_access_type access_type;
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u64 box_ctrl; /* Unit ctrl addr of the first box */
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u64 *box_ctrl_die; /* Unit ctrl addr of the first box of each die */
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u16 type; /* Type ID of the uncore block */
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u8 num_counters;
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u8 counter_width;
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u8 ctl_offset; /* Counter Control 0 offset */
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u8 ctr_offset; /* Counter 0 offset */
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u16 num_boxes; /* number of boxes for the uncore block */
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unsigned int *ids; /* Box IDs */
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unsigned int *box_offset; /* Box offset */
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};
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bool intel_uncore_has_discovery_tables(void);
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void intel_uncore_clear_discovery_tables(void);
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void intel_uncore_generic_uncore_cpu_init(void);
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