diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_gt_clock.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt_clock.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt_clock.c b/drivers/gpu/drm/xe/xe_gt_clock.c index 937054e31d72..cc2ae159298e 100644 --- a/drivers/gpu/drm/xe/xe_gt_clock.c +++ b/drivers/gpu/drm/xe/xe_gt_clock.c @@ -3,10 +3,13 @@ * Copyright © 2022 Intel Corporation */ +#include <linux/math64.h> + #include "xe_gt_clock.h" #include "regs/xe_gt_regs.h" #include "regs/xe_regs.h" +#include "xe_assert.h" #include "xe_device.h" #include "xe_gt.h" #include "xe_macros.h" @@ -14,7 +17,7 @@ static u32 read_reference_ts_freq(struct xe_gt *gt) { - u32 ts_override = xe_mmio_read32(gt, TIMESTAMP_OVERRIDE); + u32 ts_override = xe_mmio_read32(>->mmio, TIMESTAMP_OVERRIDE); u32 base_freq, frac_freq; base_freq = REG_FIELD_GET(TIMESTAMP_OVERRIDE_US_COUNTER_DIVIDER_MASK, @@ -54,7 +57,7 @@ static u32 get_crystal_clock_freq(u32 rpm_config_reg) int xe_gt_clock_init(struct xe_gt *gt) { - u32 ctc_reg = xe_mmio_read32(gt, CTC_MODE); + u32 ctc_reg = xe_mmio_read32(>->mmio, CTC_MODE); u32 freq = 0; /* Assuming gen11+ so assert this assumption is correct */ @@ -63,7 +66,7 @@ int xe_gt_clock_init(struct xe_gt *gt) if (ctc_reg & CTC_SOURCE_DIVIDE_LOGIC) { freq = read_reference_ts_freq(gt); } else { - u32 c0 = xe_mmio_read32(gt, RPM_CONFIG0); + u32 c0 = xe_mmio_read32(>->mmio, RPM_CONFIG0); freq = get_crystal_clock_freq(c0); @@ -79,7 +82,20 @@ int xe_gt_clock_init(struct xe_gt *gt) return 0; } -u64 xe_gt_clock_cycles_to_ns(const struct xe_gt *gt, u64 count) +static u64 div_u64_roundup(u64 n, u32 d) +{ + return div_u64(n + d - 1, d); +} + +/** + * xe_gt_clock_interval_to_ms - Convert sampled GT clock ticks to msec + * + * @gt: the &xe_gt + * @count: count of GT clock ticks + * + * Returns: time in msec + */ +u64 xe_gt_clock_interval_to_ms(struct xe_gt *gt, u64 count) { - return DIV_ROUND_CLOSEST_ULL(count * NSEC_PER_SEC, gt->info.reference_clock); + return div_u64_roundup(count * MSEC_PER_SEC, gt->info.reference_clock); } |