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Subject[PATCH 02/15] gma500: Move the 2D operations into DRM
Date
From: Alan Cox <alan@linux.intel.com>

We currently have a test hack framebuffer mode ioctl, turn that into a DRM
interface.

Signed-off-by: Alan Cox <alan@linux.intel.com>
---

drivers/staging/gma500/accel_2d.c | 60 ++++++++++++++++++++++++++++++++--
drivers/staging/gma500/framebuffer.c | 25 +-------------
drivers/staging/gma500/psb_drm.h | 13 +++++++
drivers/staging/gma500/psb_drv.c | 9 +++--
drivers/staging/gma500/psb_drv.h | 7 +++-
5 files changed, 82 insertions(+), 32 deletions(-)

diff --git a/drivers/staging/gma500/accel_2d.c b/drivers/staging/gma500/accel_2d.c
index c719017..ed00854 100644
--- a/drivers/staging/gma500/accel_2d.c
+++ b/drivers/staging/gma500/accel_2d.c
@@ -105,19 +105,20 @@ static int psb_2d_wait_available(struct drm_psb_private *dev_priv,
* Issue one or more 2D commands to the accelerator. This needs to be
* serialized later when we add the GEM interfaces for acceleration
*/
-int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,
+static int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,
unsigned size)
{
int ret = 0;
int i;
unsigned submit_size;

+ mutex_lock(&dev_priv->mutex_2d);
while (size > 0) {
submit_size = (size < 0x60) ? size : 0x60;
size -= submit_size;
ret = psb_2d_wait_available(dev_priv, submit_size);
if (ret)
- return ret;
+ break;

submit_size <<= 2;

@@ -126,7 +127,8 @@ int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,

(void)PSB_RSGX32(PSB_SGX_2D_SLAVE_PORT + i - 4);
}
- return 0;
+ mutex_unlock(&dev_priv->mutex_2d);
+ return ret;
}


@@ -326,6 +328,7 @@ int psbfb_sync(struct fb_info *info)
unsigned long _end = jiffies + DRM_HZ;
int busy = 0;

+ mutex_lock(&dev_priv->mutex_2d);
/*
* First idle the 2D engine.
*/
@@ -354,5 +357,56 @@ int psbfb_sync(struct fb_info *info)
_PSB_C2B_STATUS_BUSY) != 0);

out:
+ mutex_unlock(&dev_priv->mutex_2d);
return (busy) ? -EBUSY : 0;
}
+
+int psb_accel_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct drm_psb_2d_op *op = data;
+ u32 *op_ptr = &op->cmd[0];
+ int i;
+ struct drm_gem_object *obj;
+ struct gtt_range *gtt;
+ int err = -EINVAL;
+
+ if (!dev_priv->ops->accel_2d)
+ return -EOPNOTSUPP;
+ if (op->size > PSB_2D_OP_BUFLEN)
+ return -EINVAL;
+
+ /* The GEM object being used. We need to support separate src/dst/etc
+ in the end but for now keep them all the same */
+ obj = drm_gem_object_lookup(dev, file, op->src);
+ if (obj == NULL)
+ return -ENOENT;
+ gtt = container_of(obj, struct gtt_range, gem);
+
+ if (psb_gtt_pin(gtt) < 0)
+ goto bad_2;
+ for (i = 0; i < op->size; i++, op_ptr++) {
+ u32 r = *op_ptr & 0xF0000000;
+ /* Fill in the GTT offsets for the command buffer */
+ if (r == PSB_2D_SRC_SURF_BH ||
+ r == PSB_2D_DST_SURF_BH ||
+ r == PSB_2D_MASK_SURF_BH ||
+ r == PSB_2D_PAT_SURF_BH) {
+ i++;
+ op_ptr++;
+ if (i == op->size)
+ goto bad;
+ if (*op_ptr)
+ goto bad;
+ *op_ptr = gtt->offset;
+ continue;
+ }
+ }
+ psbfb_2d_submit(dev_priv, op->cmd, op->size);
+ err = 0;
+bad:
+ psb_gtt_unpin(gtt);
+bad_2:
+ drm_gem_object_unreference(obj);
+ return err;
+}
diff --git a/drivers/staging/gma500/framebuffer.c b/drivers/staging/gma500/framebuffer.c
index 76b986f..d890a50 100644
--- a/drivers/staging/gma500/framebuffer.c
+++ b/drivers/staging/gma500/framebuffer.c
@@ -200,30 +200,7 @@ static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
- struct psb_fbdev *fbdev = info->par;
- struct psb_framebuffer *psbfb = &fbdev->pfb;
- struct drm_device *dev = psbfb->base.dev;
- struct drm_psb_private *dev_priv = dev->dev_private;
- u32 __user *p = (u32 __user *)arg;
- u32 l;
- u32 buf[32];
- switch (cmd) {
- case 0x12345678:
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
- if (!dev_priv->ops->accel_2d)
- return -EOPNOTSUPP;
- if (get_user(l, p))
- return -EFAULT;
- if (l > 32)
- return -EMSGSIZE;
- if (copy_from_user(buf, p + 1, l * sizeof(u32)))
- return -EFAULT;
- psbfb_2d_submit(dev_priv, buf, l);
- return 0;
- default:
- return -ENOTTY;
- }
+ return -ENOTTY;
}

static struct fb_ops psbfb_ops = {
diff --git a/drivers/staging/gma500/psb_drm.h b/drivers/staging/gma500/psb_drm.h
index 7175117..eef53f3 100644
--- a/drivers/staging/gma500/psb_drm.h
+++ b/drivers/staging/gma500/psb_drm.h
@@ -161,6 +161,7 @@ struct drm_psb_register_rw_arg {
*/

#define DRM_PSB_GEM_CREATE 0x10
+#define DRM_PSB_2D_OP 0x11
#define DRM_PSB_DPST 0x1B
#define DRM_PSB_GAMMA 0x1C
#define DRM_PSB_DPST_BL 0x1D
@@ -190,4 +191,16 @@ struct drm_psb_gem_create {
__u32 pad;
};

+#define PSB_2D_OP_BUFLEN 16
+
+struct drm_psb_2d_op {
+ __u32 src; /* Handles, only src supported right now */
+ __u32 dst;
+ __u32 mask;
+ __u32 pat;
+ __u32 size; /* In dwords of command */
+ __u32 spare; /* And bumps array to u64 align */
+ __u32 cmd[PSB_2D_OP_BUFLEN];
+};
+
#endif
diff --git a/drivers/staging/gma500/psb_drv.c b/drivers/staging/gma500/psb_drv.c
index a753977..36bb716 100644
--- a/drivers/staging/gma500/psb_drv.c
+++ b/drivers/staging/gma500/psb_drv.c
@@ -124,6 +124,9 @@ MODULE_DEVICE_TABLE(pci, pciidlist);
#define DRM_IOCTL_PSB_GEM_CREATE \
DRM_IOWR(DRM_PSB_GEM_CREATE + DRM_COMMAND_BASE, \
struct drm_psb_gem_create)
+#define DRM_IOCTL_PSB_2D_OP \
+ DRM_IOW(DRM_PSB_2D_OP + DRM_COMMAND_BASE, \
+ struct drm_psb_2d_op)

static int psb_sizes_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
@@ -164,7 +167,7 @@ static struct drm_ioctl_desc psb_ioctls[] = {
psb_intel_get_pipe_from_crtc_id, 0),
PSB_IOCTL_DEF(DRM_IOCTL_PSB_GEM_CREATE, psb_gem_create_ioctl,
DRM_UNLOCKED | DRM_AUTH),
-
+ PSB_IOCTL_DEF(DRM_IOCTL_PSB_2D_OP, psb_accel_ioctl, DRM_UNLOCKED),
};

static void psb_lastclose(struct drm_device *dev)
@@ -179,8 +182,7 @@ static void psb_do_takedown(struct drm_device *dev)

static int psb_do_init(struct drm_device *dev)
{
- struct drm_psb_private *dev_priv =
- (struct drm_psb_private *) dev->dev_private;
+ struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_gtt *pg = &dev_priv->gtt;

uint32_t stolen_gtt;
@@ -221,6 +223,7 @@ static int psb_do_init(struct drm_device *dev)


spin_lock_init(&dev_priv->irqmask_lock);
+ mutex_init(&dev_priv->mutex_2d);

PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK0);
PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK1);
diff --git a/drivers/staging/gma500/psb_drv.h b/drivers/staging/gma500/psb_drv.h
index 12d13ae..db3e356 100644
--- a/drivers/staging/gma500/psb_drv.h
+++ b/drivers/staging/gma500/psb_drv.h
@@ -599,6 +599,9 @@ struct drm_psb_private {
bool dsr_enable;
void (*exit_idle)(struct drm_device *dev, u32 update_src, void *p_surfaceAddr, bool check_hw_on_only);

+ /* 2D acceleration */
+ struct mutex mutex_2d;
+
/* FIXME: Arrays anyone ? */
struct mdfld_dsi_encoder *encoder0;
struct mdfld_dsi_encoder *encoder2;
@@ -744,8 +747,8 @@ extern void psbfb_copyarea(struct fb_info *info,
const struct fb_copyarea *region);
extern int psbfb_sync(struct fb_info *info);
extern void psb_spank(struct drm_psb_private *dev_priv);
-extern int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,
- unsigned size);
+extern int psb_accel_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file);

/*
* psb_reset.c


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