diff options
author | Arto Merilainen <amerilainen@nvidia.com> | 2013-10-14 15:21:53 +0300 |
---|---|---|
committer | Thierry Reding <treding@nvidia.com> | 2013-10-31 09:55:48 +0100 |
commit | f5a954fed9b3eb04973ede72c50c66157fa9e15b (patch) | |
tree | d9d6faeb5b2bafbc5a4143feb10e27d975ec1da4 /drivers/gpu | |
parent | 8736fe81532182ba0086a371fae0708ea42a2cdf (diff) | |
download | op-kernel-dev-f5a954fed9b3eb04973ede72c50c66157fa9e15b.zip op-kernel-dev-f5a954fed9b3eb04973ede72c50c66157fa9e15b.tar.gz |
gpu: host1x: Add syncpoint base support
This patch adds support for hardware syncpoint bases. This creates
a simple mechanism to stall the command FIFO until an operation is
completed.
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r-- | drivers/gpu/host1x/dev.h | 2 | ||||
-rw-r--r-- | drivers/gpu/host1x/hw/channel_hw.c | 20 | ||||
-rw-r--r-- | drivers/gpu/host1x/hw/hw_host1x01_uclass.h | 6 | ||||
-rw-r--r-- | drivers/gpu/host1x/syncpt.c | 55 | ||||
-rw-r--r-- | drivers/gpu/host1x/syncpt.h | 6 |
5 files changed, 87 insertions, 2 deletions
diff --git a/drivers/gpu/host1x/dev.h b/drivers/gpu/host1x/dev.h index 6cf689b..a61a976 100644 --- a/drivers/gpu/host1x/dev.h +++ b/drivers/gpu/host1x/dev.h @@ -27,6 +27,7 @@ #include "job.h" struct host1x_syncpt; +struct host1x_syncpt_base; struct host1x_channel; struct host1x_cdma; struct host1x_job; @@ -102,6 +103,7 @@ struct host1x { void __iomem *regs; struct host1x_syncpt *syncpt; + struct host1x_syncpt_base *bases; struct device *dev; struct clk *clk; diff --git a/drivers/gpu/host1x/hw/channel_hw.c b/drivers/gpu/host1x/hw/channel_hw.c index 3be0cd2..4608257 100644 --- a/drivers/gpu/host1x/hw/channel_hw.c +++ b/drivers/gpu/host1x/hw/channel_hw.c @@ -67,6 +67,22 @@ static void submit_gathers(struct host1x_job *job) } } +static inline void synchronize_syncpt_base(struct host1x_job *job) +{ + struct host1x *host = dev_get_drvdata(job->channel->dev->parent); + struct host1x_syncpt *sp = host->syncpt + job->syncpt_id; + u32 id, value; + + value = host1x_syncpt_read_max(sp); + id = sp->base->id; + + host1x_cdma_push(&job->channel->cdma, + host1x_opcode_setclass(HOST1X_CLASS_HOST1X, + HOST1X_UCLASS_LOAD_SYNCPT_BASE, 1), + HOST1X_UCLASS_LOAD_SYNCPT_BASE_BASE_INDX_F(id) | + HOST1X_UCLASS_LOAD_SYNCPT_BASE_VALUE_F(value)); +} + static int channel_submit(struct host1x_job *job) { struct host1x_channel *ch = job->channel; @@ -118,6 +134,10 @@ static int channel_submit(struct host1x_job *job) host1x_syncpt_read_max(sp))); } + /* Synchronize base register to allow using it for relative waiting */ + if (sp->base) + synchronize_syncpt_base(job); + syncval = host1x_syncpt_incr_max(sp, user_syncpt_incrs); job->syncpt_end = syncval; diff --git a/drivers/gpu/host1x/hw/hw_host1x01_uclass.h b/drivers/gpu/host1x/hw/hw_host1x01_uclass.h index 42f3ce1..f755359 100644 --- a/drivers/gpu/host1x/hw/hw_host1x01_uclass.h +++ b/drivers/gpu/host1x/hw/hw_host1x01_uclass.h @@ -111,6 +111,12 @@ static inline u32 host1x_uclass_wait_syncpt_base_offset_f(u32 v) } #define HOST1X_UCLASS_WAIT_SYNCPT_BASE_OFFSET_F(v) \ host1x_uclass_wait_syncpt_base_offset_f(v) +static inline u32 host1x_uclass_load_syncpt_base_r(void) +{ + return 0xb; +} +#define HOST1X_UCLASS_LOAD_SYNCPT_BASE \ + host1x_uclass_load_syncpt_base_r() static inline u32 host1x_uclass_load_syncpt_base_base_indx_f(u32 v) { return (v & 0xff) << 24; diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c index 5b88ba4..159c479 100644 --- a/drivers/gpu/host1x/syncpt.c +++ b/drivers/gpu/host1x/syncpt.c @@ -30,6 +30,29 @@ #define SYNCPT_CHECK_PERIOD (2 * HZ) #define MAX_STUCK_CHECK_COUNT 15 +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) @@ -44,6 +67,12 @@ static struct host1x_syncpt *host1x_syncpt_alloc(struct host1x *host, 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) @@ -307,20 +336,30 @@ 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); @@ -344,7 +383,9 @@ 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 = false; @@ -398,3 +439,13 @@ struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id) return NULL; return host->syncpt + id; } + +struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp) +{ + return sp ? sp->base : NULL; +} + +u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base) +{ + return base->id; +} diff --git a/drivers/gpu/host1x/syncpt.h b/drivers/gpu/host1x/syncpt.h index 4eb933a..9056465 100644 --- a/drivers/gpu/host1x/syncpt.h +++ b/drivers/gpu/host1x/syncpt.h @@ -31,6 +31,11 @@ struct host1x; /* Reserved for replacing an expired wait with a NOP */ #define HOST1X_SYNCPT_RESERVED 0 +struct host1x_syncpt_base { + unsigned int id; + bool requested; +}; + struct host1x_syncpt { int id; atomic_t min_val; @@ -40,6 +45,7 @@ struct host1x_syncpt { bool client_managed; struct host1x *host; struct device *dev; + struct host1x_syncpt_base *base; /* interrupt data */ struct host1x_syncpt_intr intr; |