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authorThierry Reding <treding@nvidia.com>2013-09-24 16:30:32 +0200
committerThierry Reding <treding@nvidia.com>2013-10-31 09:20:11 +0100
commit35d747a81d7eb824bd0c3476cd0c564b52ad5353 (patch)
tree75bf333cba5d9dfbce532bb0c1391ca9bbeb7b43 /include
parent53fa7f7204c97dc0c86b99ff8365ad6a7b2ebd78 (diff)
downloadlinux-35d747a81d7eb824bd0c3476cd0c564b52ad5353.tar.bz2
gpu: host1x: Expose syncpt and channel functionality
Expose the buffer objects, syncpoint and channel functionality in the public public header so that drivers can use them. Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/host1x.h185
1 files changed, 185 insertions, 0 deletions
diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index d429a938ba13..7442f2a57039 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -19,6 +19,9 @@
#ifndef __LINUX_HOST1X_H
#define __LINUX_HOST1X_H
+#include <linux/kref.h>
+#include <linux/types.h>
+
enum host1x_class {
HOST1X_CLASS_HOST1X = 0x1,
HOST1X_CLASS_GR2D = 0x51,
@@ -45,4 +48,186 @@ struct host1x_client {
unsigned int num_syncpts;
};
+/*
+ * host1x buffer objects
+ */
+
+struct host1x_bo;
+struct sg_table;
+
+struct host1x_bo_ops {
+ struct host1x_bo *(*get)(struct host1x_bo *bo);
+ void (*put)(struct host1x_bo *bo);
+ dma_addr_t (*pin)(struct host1x_bo *bo, struct sg_table **sgt);
+ void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt);
+ void *(*mmap)(struct host1x_bo *bo);
+ void (*munmap)(struct host1x_bo *bo, void *addr);
+ void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum);
+ void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr);
+};
+
+struct host1x_bo {
+ const struct host1x_bo_ops *ops;
+};
+
+static inline void host1x_bo_init(struct host1x_bo *bo,
+ const struct host1x_bo_ops *ops)
+{
+ bo->ops = ops;
+}
+
+static inline struct host1x_bo *host1x_bo_get(struct host1x_bo *bo)
+{
+ return bo->ops->get(bo);
+}
+
+static inline void host1x_bo_put(struct host1x_bo *bo)
+{
+ bo->ops->put(bo);
+}
+
+static inline dma_addr_t host1x_bo_pin(struct host1x_bo *bo,
+ struct sg_table **sgt)
+{
+ return bo->ops->pin(bo, sgt);
+}
+
+static inline void host1x_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt)
+{
+ bo->ops->unpin(bo, sgt);
+}
+
+static inline void *host1x_bo_mmap(struct host1x_bo *bo)
+{
+ return bo->ops->mmap(bo);
+}
+
+static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr)
+{
+ bo->ops->munmap(bo, addr);
+}
+
+static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum)
+{
+ return bo->ops->kmap(bo, pagenum);
+}
+
+static inline void host1x_bo_kunmap(struct host1x_bo *bo,
+ unsigned int pagenum, void *addr)
+{
+ bo->ops->kunmap(bo, pagenum, addr);
+}
+
+/*
+ * host1x syncpoints
+ */
+
+struct host1x_syncpt;
+struct host1x;
+
+struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id);
+u32 host1x_syncpt_id(struct host1x_syncpt *sp);
+u32 host1x_syncpt_read_min(struct host1x_syncpt *sp);
+u32 host1x_syncpt_read_max(struct host1x_syncpt *sp);
+int host1x_syncpt_incr(struct host1x_syncpt *sp);
+int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout,
+ u32 *value);
+struct host1x_syncpt *host1x_syncpt_request(struct device *dev,
+ bool client_managed);
+void host1x_syncpt_free(struct host1x_syncpt *sp);
+
+/*
+ * host1x channel
+ */
+
+struct host1x_channel;
+struct host1x_job;
+
+struct host1x_channel *host1x_channel_request(struct device *dev);
+void host1x_channel_free(struct host1x_channel *channel);
+struct host1x_channel *host1x_channel_get(struct host1x_channel *channel);
+void host1x_channel_put(struct host1x_channel *channel);
+int host1x_job_submit(struct host1x_job *job);
+
+/*
+ * host1x job
+ */
+
+struct host1x_reloc {
+ struct host1x_bo *cmdbuf;
+ u32 cmdbuf_offset;
+ struct host1x_bo *target;
+ u32 target_offset;
+ u32 shift;
+ u32 pad;
+};
+
+struct host1x_job {
+ /* When refcount goes to zero, job can be freed */
+ struct kref ref;
+
+ /* List entry */
+ struct list_head list;
+
+ /* Channel where job is submitted to */
+ struct host1x_channel *channel;
+
+ u32 client;
+
+ /* Gathers and their memory */
+ struct host1x_job_gather *gathers;
+ unsigned int num_gathers;
+
+ /* Wait checks to be processed at submit time */
+ struct host1x_waitchk *waitchk;
+ unsigned int num_waitchk;
+ u32 waitchk_mask;
+
+ /* Array of handles to be pinned & unpinned */
+ struct host1x_reloc *relocarray;
+ unsigned int num_relocs;
+ struct host1x_job_unpin_data *unpins;
+ unsigned int num_unpins;
+
+ dma_addr_t *addr_phys;
+ dma_addr_t *gather_addr_phys;
+ dma_addr_t *reloc_addr_phys;
+
+ /* Sync point id, number of increments and end related to the submit */
+ u32 syncpt_id;
+ u32 syncpt_incrs;
+ u32 syncpt_end;
+
+ /* Maximum time to wait for this job */
+ unsigned int timeout;
+
+ /* Index and number of slots used in the push buffer */
+ unsigned int first_get;
+ unsigned int num_slots;
+
+ /* Copy of gathers */
+ size_t gather_copy_size;
+ dma_addr_t gather_copy;
+ u8 *gather_copy_mapped;
+
+ /* Check if register is marked as an address reg */
+ int (*is_addr_reg)(struct device *dev, u32 reg, u32 class);
+
+ /* Request a SETCLASS to this class */
+ u32 class;
+
+ /* Add a channel wait for previous ops to complete */
+ bool serialize;
+};
+
+struct host1x_job *host1x_job_alloc(struct host1x_channel *ch,
+ u32 num_cmdbufs, u32 num_relocs,
+ u32 num_waitchks);
+void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *mem_id,
+ u32 words, u32 offset);
+struct host1x_job *host1x_job_get(struct host1x_job *job);
+void host1x_job_put(struct host1x_job *job);
+int host1x_job_pin(struct host1x_job *job, struct device *dev);
+void host1x_job_unpin(struct host1x_job *job);
+
#endif