^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Tegra host1x Syncpoints
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2010-2013, NVIDIA Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #ifndef __HOST1X_SYNCPT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define __HOST1X_SYNCPT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/host1x.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "intr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct host1x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) /* Reserved for replacing an expired wait with a NOP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define HOST1X_SYNCPT_RESERVED 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct host1x_syncpt_base {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) bool requested;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct host1x_syncpt {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) atomic_t min_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) atomic_t max_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) u32 base_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) bool client_managed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct host1x *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct host1x_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct host1x_syncpt_base *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /* interrupt data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct host1x_syncpt_intr intr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* Initialize sync point array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int host1x_syncpt_init(struct host1x *host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* Free sync point array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) void host1x_syncpt_deinit(struct host1x *host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* Return number of sync point supported. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) unsigned int host1x_syncpt_nb_pts(struct host1x *host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* Return number of wait bases supported. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) unsigned int host1x_syncpt_nb_bases(struct host1x *host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* Return number of mlocks supported. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) unsigned int host1x_syncpt_nb_mlocks(struct host1x *host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Check sync point sanity. If max is larger than min, there have too many
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * sync point increments.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * Client managed sync point are not tracked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static inline bool host1x_syncpt_check_max(struct host1x_syncpt *sp, u32 real)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) u32 max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (sp->client_managed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) max = host1x_syncpt_read_max(sp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return (s32)(max - real) >= 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* Return true if sync point is client managed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static inline bool host1x_syncpt_client_managed(struct host1x_syncpt *sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return sp->client_managed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * Returns true if syncpoint min == max, which means that there are no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * outstanding operations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static inline bool host1x_syncpt_idle(struct host1x_syncpt *sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int min, max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) smp_rmb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) min = atomic_read(&sp->min_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) max = atomic_read(&sp->max_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return (min == max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /* Load current value from hardware to the shadow register. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) u32 host1x_syncpt_load(struct host1x_syncpt *sp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* Check if the given syncpoint value has already passed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) bool host1x_syncpt_is_expired(struct host1x_syncpt *sp, u32 thresh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /* Save host1x sync point state into shadow registers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) void host1x_syncpt_save(struct host1x *host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /* Reset host1x sync point state from shadow registers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) void host1x_syncpt_restore(struct host1x *host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /* Read current wait base value into shadow register and return it. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) u32 host1x_syncpt_load_wait_base(struct host1x_syncpt *sp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* Indicate future operations by incrementing the sync point max. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /* Check if sync point id is valid. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static inline int host1x_syncpt_is_valid(struct host1x_syncpt *sp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return sp->id < host1x_syncpt_nb_pts(sp->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags