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ac/cmdbuf: introduce ac_cmdbuf

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This will be shared by both drivers.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36292>
This commit is contained in:
Samuel Pitoiset 2025-07-22 13:26:03 +02:00 • committed by Marge Bot
parent a7ae26c96c
commit 9ff4750eaf
1 changed files with 61 additions and 0 deletions
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61
src/amd/common/ac_cmdbuf.h
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@ -15,6 +15,67 @@
extern "C" { extern "C" {
#endif #endif
struct ac_cmdbuf {
uint32_t cdw; /* Number of used dwords. */
uint32_t max_dw; /* Maximum number of dwords. */
uint32_t reserved_dw; /* Number of dwords reserved. */
uint32_t *buf; /* The base pointer of the chunk. */
};
#define ac_cmdbuf_begin(cs) struct ac_cmdbuf *__cs = (cs); \
uint32_t __cs_num = __cs->cdw; \
UNUSED uint32_t __cs_num_initial = __cs_num; \
UNUSED uint32_t __cs_reserved_dw = __cs->reserved_dw; \
uint32_t *__cs_buf = __cs->buf
#define ac_cmdbuf_begin_again(cs) do { \
assert(__cs == NULL); \
__cs = (cs); \
__cs_num = __cs->cdw; \
__cs_num_initial = __cs_num; \
__cs_buf = __cs->buf; \
} while (0)
#define ac_cmdbuf_emit(value) \
do { \
assert(!__cs_reserved_dw || __cs_num < __cs_reserved_dw); \
__cs_buf[__cs_num++] = (value); \
} while (0)
#define ac_cmdbuf_packets_added() (__cs_num != __cs_num_initial)
#define ac_cmdbuf_emit_array(values, num) do { \
unsigned __n = (num); \
assert(!__cs_reserved_dw || __cs_num + __n <= __cs_reserved_dw); \
memcpy(__cs_buf + __cs_num, (values), __n * 4); \
__cs_num += __n; \
} while (0)
#define ac_cmdbuf_end() do { \
__cs->cdw = __cs_num; \
assert(__cs->cdw <= __cs->max_dw); \
__cs = NULL; \
} while (0)
/* Packet building helpers. Don't use directly. */
#define __ac_cmdbuf_set_reg_seq(reg, num, idx, prefix_name, packet, reset_filter_cam) \
do { \
assert((reg) >= prefix_name##_REG_OFFSET && (reg) < prefix_name##_REG_END); \
ac_cmdbuf_emit(PKT3(packet, num, 0) | PKT3_RESET_FILTER_CAM_S(reset_filter_cam)); \
ac_cmdbuf_emit((((reg) - prefix_name##_REG_OFFSET) >> 2) | ((idx) << 28)); \
} while (0)
#define __ac_cmdbuf_set_reg(reg, idx, value, prefix_name, packet) \
do { \
__ac_cmdbuf_set_reg_seq(reg, 1, idx, prefix_name, packet, 0); \
ac_cmdbuf_emit(value); \
} while (0)
/* Packet building helpers for CONFIG registers. */
#define ac_cmdbuf_set_config_reg_seq(reg, num) __ac_cmdbuf_set_reg_seq(reg, num, 0, SI_CONFIG, PKT3_SET_CONFIG_REG, 0)
#define ac_cmdbuf_set_config_reg(reg, value) __ac_cmdbuf_set_reg(reg, 0, value, SI_CONFIG, PKT3_SET_CONFIG_REG)
struct ac_preamble_state { struct ac_preamble_state {
uint64_t border_color_va; uint64_t border_color_va;