diff options
Diffstat (limited to 'drivers/gpu/host1x/syncpt.c')
| -rw-r--r-- | drivers/gpu/host1x/syncpt.c | 122 |
1 files changed, 98 insertions, 24 deletions
diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c index 4b493453e80..b10550ee1d8 100644 --- a/drivers/gpu/host1x/syncpt.c +++ b/drivers/gpu/host1x/syncpt.c @@ -30,9 +30,32 @@ #define SYNCPT_CHECK_PERIOD (2 * HZ) #define MAX_STUCK_CHECK_COUNT 15 -static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host, - struct device *dev, - int client_managed) +static struct host1x_syncpt_base * +host1x_syncpt_base_request(struct host1x *host) +{ + struct host1x_syncpt_base *bases = host->bases; + unsigned int i; + + for (i = 0; i < host->info->nb_bases; i++) + if (!bases[i].requested) + break; + + if (i >= host->info->nb_bases) + return NULL; + + bases[i].requested = true; + return &bases[i]; +} + +static void host1x_syncpt_base_free(struct host1x_syncpt_base *base) +{ + if (base) + base->requested = false; +} + +static struct host1x_syncpt *host1x_syncpt_alloc(struct host1x *host, + struct device *dev, + unsigned long flags) { int i; struct host1x_syncpt *sp = host->syncpt; @@ -40,9 +63,16 @@ static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host, for (i = 0; i < host->info->nb_pts && sp->name; i++, sp++) ; - if (sp->dev) + + if (i >= host->info->nb_pts) return NULL; + if (flags & HOST1X_SYNCPT_HAS_BASE) { + sp->base = host1x_syncpt_base_request(host); + if (!sp->base) + return NULL; + } + name = kasprintf(GFP_KERNEL, "%02d-%s", sp->id, dev ? dev_name(dev) : NULL); if (!name) @@ -50,7 +80,11 @@ static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host, sp->dev = dev; sp->name = name; - sp->client_managed = client_managed; + + if (flags & HOST1X_SYNCPT_CLIENT_MANAGED) + sp->client_managed = true; + else + sp->client_managed = false; return sp; } @@ -59,6 +93,7 @@ u32 host1x_syncpt_id(struct host1x_syncpt *sp) { return sp->id; } +EXPORT_SYMBOL(host1x_syncpt_id); /* * Updates the value sent to hardware. @@ -67,6 +102,7 @@ u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs) { return (u32)atomic_add_return(incrs, &sp->max_val); } +EXPORT_SYMBOL(host1x_syncpt_incr_max); /* * Write cached syncpoint and waitbase values to hardware. @@ -128,23 +164,13 @@ u32 host1x_syncpt_load_wait_base(struct host1x_syncpt *sp) } /* - * Write a cpu syncpoint increment to the hardware, without touching - * the cache. Caller is responsible for host being powered. - */ -void host1x_syncpt_cpu_incr(struct host1x_syncpt *sp) -{ - host1x_hw_syncpt_cpu_incr(sp->host, sp); -} - -/* * Increment syncpoint value from cpu, updating cache */ -void host1x_syncpt_incr(struct host1x_syncpt *sp) +int host1x_syncpt_incr(struct host1x_syncpt *sp) { - if (host1x_syncpt_client_managed(sp)) - host1x_syncpt_incr_max(sp, 1); - host1x_syncpt_cpu_incr(sp); + return host1x_hw_syncpt_cpu_incr(sp->host, sp); } +EXPORT_SYMBOL(host1x_syncpt_incr); /* * Updated sync point form hardware, and returns true if syncpoint is expired, @@ -313,25 +339,35 @@ int host1x_syncpt_patch_wait(struct host1x_syncpt *sp, void *patch_addr) int host1x_syncpt_init(struct host1x *host) { + struct host1x_syncpt_base *bases; struct host1x_syncpt *syncpt; int i; syncpt = devm_kzalloc(host->dev, sizeof(*syncpt) * host->info->nb_pts, - GFP_KERNEL); + GFP_KERNEL); if (!syncpt) return -ENOMEM; - for (i = 0; i < host->info->nb_pts; ++i) { + bases = devm_kzalloc(host->dev, sizeof(*bases) * host->info->nb_bases, + GFP_KERNEL); + if (!bases) + return -ENOMEM; + + for (i = 0; i < host->info->nb_pts; i++) { syncpt[i].id = i; syncpt[i].host = host; } + for (i = 0; i < host->info->nb_bases; i++) + bases[i].id = i; + host->syncpt = syncpt; + host->bases = bases; host1x_syncpt_restore(host); /* Allocate sync point to use for clearing waits for expired fences */ - host->nop_sp = _host1x_syncpt_alloc(host, NULL, 0); + host->nop_sp = host1x_syncpt_alloc(host, NULL, 0); if (!host->nop_sp) return -ENOMEM; @@ -339,22 +375,26 @@ int host1x_syncpt_init(struct host1x *host) } struct host1x_syncpt *host1x_syncpt_request(struct device *dev, - int client_managed) + unsigned long flags) { struct host1x *host = dev_get_drvdata(dev->parent); - return _host1x_syncpt_alloc(host, dev, client_managed); + return host1x_syncpt_alloc(host, dev, flags); } +EXPORT_SYMBOL(host1x_syncpt_request); void host1x_syncpt_free(struct host1x_syncpt *sp) { if (!sp) return; + host1x_syncpt_base_free(sp->base); kfree(sp->name); + sp->base = NULL; sp->dev = NULL; sp->name = NULL; - sp->client_managed = 0; + sp->client_managed = false; } +EXPORT_SYMBOL(host1x_syncpt_free); void host1x_syncpt_deinit(struct host1x *host) { @@ -364,6 +404,27 @@ void host1x_syncpt_deinit(struct host1x *host) kfree(sp->name); } +/* + * Read max. It indicates how many operations there are in queue, either in + * channel or in a software thread. + * */ +u32 host1x_syncpt_read_max(struct host1x_syncpt *sp) +{ + smp_rmb(); + return (u32)atomic_read(&sp->max_val); +} +EXPORT_SYMBOL(host1x_syncpt_read_max); + +/* + * Read min, which is a shadow of the current sync point value in hardware. + */ +u32 host1x_syncpt_read_min(struct host1x_syncpt *sp) +{ + smp_rmb(); + return (u32)atomic_read(&sp->min_val); +} +EXPORT_SYMBOL(host1x_syncpt_read_min); + int host1x_syncpt_nb_pts(struct host1x *host) { return host->info->nb_pts; @@ -385,3 +446,16 @@ struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id) return NULL; return host->syncpt + id; } +EXPORT_SYMBOL(host1x_syncpt_get); + +struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp) +{ + return sp ? sp->base : NULL; +} +EXPORT_SYMBOL(host1x_syncpt_get_base); + +u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base) +{ + return base->id; +} +EXPORT_SYMBOL(host1x_syncpt_base_id); |