diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mfd/glamo/glamo-cmdq.c | 43 |
1 files changed, 17 insertions, 26 deletions
diff --git a/drivers/mfd/glamo/glamo-cmdq.c b/drivers/mfd/glamo/glamo-cmdq.c index 03c76af76f6..32fad98be8a 100644 --- a/drivers/mfd/glamo/glamo-cmdq.c +++ b/drivers/mfd/glamo/glamo-cmdq.c @@ -58,31 +58,31 @@ #include "glamo-regs.h" -static void reg_write(struct glamodrm_handle *gdrm, +static inline void reg_write(struct glamodrm_handle *gdrm, u_int16_t reg, u_int16_t val) { iowrite16(val, gdrm->reg_base + reg); } -static u16 reg_read(struct glamodrm_handle *gdrm, u_int16_t reg) +static inline u16 reg_read(struct glamodrm_handle *gdrm, u_int16_t reg) { return ioread16(gdrm->reg_base + reg); } -static ssize_t glamo_get_read(struct glamodrm_handle *gdrm) +static u32 glamo_get_read(struct glamodrm_handle *gdrm) { /* we could turn off clock here */ - ssize_t ring_read = reg_read(gdrm, GLAMO_REG_CMDQ_READ_ADDRL); + u32 ring_read = reg_read(gdrm, GLAMO_REG_CMDQ_READ_ADDRL); ring_read |= ((reg_read(gdrm, GLAMO_REG_CMDQ_READ_ADDRH) & 0x7) << 16); return ring_read; } -static ssize_t glamo_get_write(struct glamodrm_handle *gdrm) +static u32 glamo_get_write(struct glamodrm_handle *gdrm) { - ssize_t ring_write = reg_read(gdrm, GLAMO_REG_CMDQ_WRITE_ADDRL); + u32 ring_write = reg_read(gdrm, GLAMO_REG_CMDQ_WRITE_ADDRL); ring_write |= ((reg_read(gdrm, GLAMO_REG_CMDQ_WRITE_ADDRH) & 0x7) << 16); @@ -166,31 +166,26 @@ static int glamo_add_to_ring(struct glamodrm_handle *gdrm, u16 *addr, do { ring_read = glamo_get_read(gdrm); } while (ring_read > ring_write && ring_read < new_ring_write); - } else { + } else { /* Same, but kind of inside-out */ do { - ring_read = glamo_get_read(gdrm); + ring_read = glamo_get_read(gdrm); } while (ring_read > ring_write || ring_read < new_ring_write); } /* Are we about to wrap around? */ if (ring_write >= new_ring_write) { - size_t rest_size; - int i; + u32 rest_size; printk(KERN_INFO "[glamo-drm] CmdQ wrap-around...\n"); /* Wrap around */ rest_size = GLAMO_CMDQ_SIZE - ring_write; /* Space left */ /* Write from current position to end */ - for ( i=0; i<rest_size; i++ ) { - iowrite16(*(addr+i), gdrm->cmdq_base+ring_write+(i*2)); - } + memcpy_toio(gdrm->cmdq_base+ring_write, addr, rest_size); /* Write from start */ - for ( i=0; i<(count-rest_size); i++ ) { - iowrite16(*(addr+rest_size+i), gdrm->cmdq_base+(i*2)); - } + memcpy_toio(gdrm->cmdq_base, addr+(rest_size>>1), count - rest_size); /* ring_write being 0 will result in a deadlock because the * cmdq read will never stop. To avoid such an behaviour insert @@ -203,7 +198,7 @@ static int glamo_add_to_ring(struct glamodrm_handle *gdrm, u16 *addr, /* Suppose we just filled the WHOLE ring buffer, and so the * write position ends up in the same place as it started. - * No change in pointer means no activity from the command + * No change in poginter means no activity from the command * queue engine. So, insert a no-op */ if (ring_write == new_ring_write) { iowrite16(0x0000, gdrm->cmdq_base + new_ring_write); @@ -213,11 +208,7 @@ static int glamo_add_to_ring(struct glamodrm_handle *gdrm, u16 *addr, } else { - int i; - /* The easy case */ - for ( i=0; i<count/2; i++ ) { /* Number of words */ - iowrite16(*(addr+i), gdrm->cmdq_base+ring_write+(i*2)); - } + memcpy_toio(gdrm->cmdq_base+ring_write, addr,count); } @@ -251,16 +242,16 @@ static int glamo_do_relocation(struct glamodrm_handle *gdrm, struct drm_device *dev, struct drm_file *file_priv) { - uint32_t *handles; + u32 *handles; int *offsets; int nobjs = cbuf->nobjs; int i; if ( nobjs > 32 ) return -EINVAL; /* Get real... */ - handles = drm_alloc(nobjs*sizeof(uint32_t), DRM_MEM_DRIVER); + handles = drm_alloc(nobjs*sizeof(u32), DRM_MEM_DRIVER); if ( handles == NULL ) return -1; - if ( copy_from_user(handles, cbuf->objs, nobjs*sizeof(uint32_t)) ) + if ( copy_from_user(handles, cbuf->objs, nobjs*sizeof(u32)) ) return -1; offsets = drm_alloc(nobjs*sizeof(int), DRM_MEM_DRIVER); @@ -270,7 +261,7 @@ static int glamo_do_relocation(struct glamodrm_handle *gdrm, for ( i=0; i<nobjs; i++ ) { - uint32_t handle = handles[i]; + u32 handle = handles[i]; int offset = offsets[i]; struct drm_gem_object *obj; struct drm_glamo_gem_object *gobj; |