[Intel-xe] [RFC 1/2] drm/xe: Move mmio read/write functions to xe_mmio.c
Radhakrishna Sripada
radhakrishna.sripada at intel.com
Wed Jun 14 00:13:14 UTC 2023
Move the register read/write apis to xe_mmio.c to prepare for
adding tracing infrastructure for the same. Adding tracing support
in xe_mmio.h messes with the compilation of the display code.
Cc: Lucas De Marchi <lucas.demarchi at intel.com>
Cc: Matt Roper <matthew.d.roper at intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
---
drivers/gpu/drm/xe/xe_mmio.c | 113 ++++++++++++++++++++++++++++++
drivers/gpu/drm/xe/xe_mmio.h | 129 ++++-------------------------------
2 files changed, 128 insertions(+), 114 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_mmio.c b/drivers/gpu/drm/xe/xe_mmio.c
index 475b14fe4356..70ad1b6a17a0 100644
--- a/drivers/gpu/drm/xe/xe_mmio.c
+++ b/drivers/gpu/drm/xe/xe_mmio.c
@@ -435,6 +435,119 @@ static const struct xe_reg mmio_read_whitelist[] = {
RING_TIMESTAMP(RENDER_RING_BASE),
};
+inline u8 xe_mmio_read8(struct xe_gt *gt, struct xe_reg reg)
+{
+ struct xe_tile *tile = gt_to_tile(gt);
+
+ if (reg.addr < gt->mmio.adj_limit)
+ reg.addr += gt->mmio.adj_offset;
+
+ return readb(tile->mmio.regs + reg.addr);
+}
+
+inline void xe_mmio_write32(struct xe_gt *gt,
+ struct xe_reg reg, u32 val)
+{
+ struct xe_tile *tile = gt_to_tile(gt);
+
+ if (reg.addr < gt->mmio.adj_limit)
+ reg.addr += gt->mmio.adj_offset;
+
+ writel(val, tile->mmio.regs + reg.addr);
+}
+
+inline u32 xe_mmio_read32(struct xe_gt *gt, struct xe_reg reg)
+{
+ struct xe_tile *tile = gt_to_tile(gt);
+
+ if (reg.addr < gt->mmio.adj_limit)
+ reg.addr += gt->mmio.adj_offset;
+
+ return readl(tile->mmio.regs + reg.addr);
+}
+
+inline u32 xe_mmio_rmw32(struct xe_gt *gt, struct xe_reg reg, u32 clr,
+ u32 set)
+{
+ u32 old, reg_val;
+
+ old = xe_mmio_read32(gt, reg);
+ reg_val = (old & ~clr) | set;
+ xe_mmio_write32(gt, reg, reg_val);
+
+ return old;
+}
+
+inline void xe_mmio_write64(struct xe_gt *gt,
+ struct xe_reg reg, u64 val)
+{
+ struct xe_tile *tile = gt_to_tile(gt);
+
+ if (reg.addr < gt->mmio.adj_limit)
+ reg.addr += gt->mmio.adj_offset;
+
+ writeq(val, tile->mmio.regs + reg.addr);
+}
+
+inline u64 xe_mmio_read64(struct xe_gt *gt, struct xe_reg reg)
+{
+ struct xe_tile *tile = gt_to_tile(gt);
+
+ if (reg.addr < gt->mmio.adj_limit)
+ reg.addr += gt->mmio.adj_offset;
+
+ return readq(tile->mmio.regs + reg.addr);
+}
+
+inline int xe_mmio_write32_and_verify(struct xe_gt *gt,
+ struct xe_reg reg, u32 val,
+ u32 mask, u32 eval)
+{
+ u32 reg_val;
+
+ xe_mmio_write32(gt, reg, val);
+ reg_val = xe_mmio_read32(gt, reg);
+
+ return (reg_val & mask) != eval ? -EINVAL : 0;
+}
+
+inline int xe_mmio_wait32(struct xe_gt *gt, struct xe_reg reg, u32 val,
+ u32 mask, u32 timeout_us, u32 *out_val,
+ bool atomic)
+{
+ ktime_t cur = ktime_get_raw();
+ const ktime_t end = ktime_add_us(cur, timeout_us);
+ int ret = -ETIMEDOUT;
+ s64 wait = 10;
+ u32 read;
+
+ for (;;) {
+ read = xe_mmio_read32(gt, reg);
+ if ((read & mask) == val) {
+ ret = 0;
+ break;
+ }
+
+ cur = ktime_get_raw();
+ if (!ktime_before(cur, end))
+ break;
+
+ if (ktime_after(ktime_add_us(cur, wait), end))
+ wait = ktime_us_delta(end, cur);
+
+ if (atomic)
+ udelay(wait);
+ else
+ usleep_range(wait, wait << 1);
+ wait <<= 1;
+ }
+
+ if (out_val)
+ *out_val = read;
+
+ return ret;
+}
+
int xe_mmio_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
{
diff --git a/drivers/gpu/drm/xe/xe_mmio.h b/drivers/gpu/drm/xe/xe_mmio.h
index 3c547d78afba..2aa2c01e60dd 100644
--- a/drivers/gpu/drm/xe/xe_mmio.h
+++ b/drivers/gpu/drm/xe/xe_mmio.h
@@ -20,120 +20,21 @@ struct xe_device;
#define GEN12_LMEM_BAR 2
int xe_mmio_init(struct xe_device *xe);
-
-static inline u8 xe_mmio_read8(struct xe_gt *gt, struct xe_reg reg)
-{
- struct xe_tile *tile = gt_to_tile(gt);
-
- if (reg.addr < gt->mmio.adj_limit)
- reg.addr += gt->mmio.adj_offset;
-
- return readb(tile->mmio.regs + reg.addr);
-}
-
-static inline void xe_mmio_write32(struct xe_gt *gt,
- struct xe_reg reg, u32 val)
-{
- struct xe_tile *tile = gt_to_tile(gt);
-
- if (reg.addr < gt->mmio.adj_limit)
- reg.addr += gt->mmio.adj_offset;
-
- writel(val, tile->mmio.regs + reg.addr);
-}
-
-static inline u32 xe_mmio_read32(struct xe_gt *gt, struct xe_reg reg)
-{
- struct xe_tile *tile = gt_to_tile(gt);
-
- if (reg.addr < gt->mmio.adj_limit)
- reg.addr += gt->mmio.adj_offset;
-
- return readl(tile->mmio.regs + reg.addr);
-}
-
-static inline u32 xe_mmio_rmw32(struct xe_gt *gt, struct xe_reg reg, u32 clr,
- u32 set)
-{
- u32 old, reg_val;
-
- old = xe_mmio_read32(gt, reg);
- reg_val = (old & ~clr) | set;
- xe_mmio_write32(gt, reg, reg_val);
-
- return old;
-}
-
-static inline void xe_mmio_write64(struct xe_gt *gt,
- struct xe_reg reg, u64 val)
-{
- struct xe_tile *tile = gt_to_tile(gt);
-
- if (reg.addr < gt->mmio.adj_limit)
- reg.addr += gt->mmio.adj_offset;
-
- writeq(val, tile->mmio.regs + reg.addr);
-}
-
-static inline u64 xe_mmio_read64(struct xe_gt *gt, struct xe_reg reg)
-{
- struct xe_tile *tile = gt_to_tile(gt);
-
- if (reg.addr < gt->mmio.adj_limit)
- reg.addr += gt->mmio.adj_offset;
-
- return readq(tile->mmio.regs + reg.addr);
-}
-
-static inline int xe_mmio_write32_and_verify(struct xe_gt *gt,
- struct xe_reg reg, u32 val,
- u32 mask, u32 eval)
-{
- u32 reg_val;
-
- xe_mmio_write32(gt, reg, val);
- reg_val = xe_mmio_read32(gt, reg);
-
- return (reg_val & mask) != eval ? -EINVAL : 0;
-}
-
-static inline int xe_mmio_wait32(struct xe_gt *gt, struct xe_reg reg, u32 val,
- u32 mask, u32 timeout_us, u32 *out_val,
- bool atomic)
-{
- ktime_t cur = ktime_get_raw();
- const ktime_t end = ktime_add_us(cur, timeout_us);
- int ret = -ETIMEDOUT;
- s64 wait = 10;
- u32 read;
-
- for (;;) {
- read = xe_mmio_read32(gt, reg);
- if ((read & mask) == val) {
- ret = 0;
- break;
- }
-
- cur = ktime_get_raw();
- if (!ktime_before(cur, end))
- break;
-
- if (ktime_after(ktime_add_us(cur, wait), end))
- wait = ktime_us_delta(end, cur);
-
- if (atomic)
- udelay(wait);
- else
- usleep_range(wait, wait << 1);
- wait <<= 1;
- }
-
- if (out_val)
- *out_val = read;
-
- return ret;
-}
-
+inline u8 xe_mmio_read8(struct xe_gt *gt, struct xe_reg reg);
+inline void xe_mmio_write32(struct xe_gt *gt,
+ struct xe_reg reg, u32 val);
+inline u32 xe_mmio_read32(struct xe_gt *gt, struct xe_reg reg);
+inline u32 xe_mmio_rmw32(struct xe_gt *gt, struct xe_reg reg, u32 clr,
+ u32 set);
+inline void xe_mmio_write64(struct xe_gt *gt,
+ struct xe_reg reg, u64 val);
+inline u64 xe_mmio_read64(struct xe_gt *gt, struct xe_reg reg);
+inline int xe_mmio_write32_and_verify(struct xe_gt *gt,
+ struct xe_reg reg, u32 val,
+ u32 mask, u32 eval);
+inline int xe_mmio_wait32(struct xe_gt *gt, struct xe_reg reg, u32 val,
+ u32 mask, u32 timeout_us, u32 *out_val,
+ bool atomic);
int xe_mmio_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
--
2.34.1
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