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path: root/drivers/gpu/drm/via/via_dma.c
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Diffstat (limited to 'drivers/gpu/drm/via/via_dma.c')
-rw-r--r--drivers/gpu/drm/via/via_dma.c169
1 files changed, 76 insertions, 93 deletions
diff --git a/drivers/gpu/drm/via/via_dma.c b/drivers/gpu/drm/via/via_dma.c
index bfb92d28326..6fc0648dd37 100644
--- a/drivers/gpu/drm/via/via_dma.c
+++ b/drivers/gpu/drm/via/via_dma.c
@@ -34,9 +34,8 @@
* Thomas Hellstrom.
*/
-#include "drmP.h"
-#include "drm.h"
-#include "via_drm.h"
+#include <drm/drmP.h>
+#include <drm/via_drm.h>
#include "via_drv.h"
#include "via_3d_reg.h"
@@ -58,28 +57,29 @@
*((uint32_t *)(vb)) = ((nReg) >> 2) | HALCYON_HEADER1; \
*((uint32_t *)(vb) + 1) = (nData); \
vb = ((uint32_t *)vb) + 2; \
- dev_priv->dma_low +=8; \
+ dev_priv->dma_low += 8; \
}
-#define via_flush_write_combine() DRM_MEMORYBARRIER()
+#define via_flush_write_combine() mb()
-#define VIA_OUT_RING_QW(w1,w2) \
+#define VIA_OUT_RING_QW(w1, w2) do { \
*vb++ = (w1); \
*vb++ = (w2); \
- dev_priv->dma_low += 8;
+ dev_priv->dma_low += 8; \
+} while (0)
-static void via_cmdbuf_start(drm_via_private_t * dev_priv);
-static void via_cmdbuf_pause(drm_via_private_t * dev_priv);
-static void via_cmdbuf_reset(drm_via_private_t * dev_priv);
-static void via_cmdbuf_rewind(drm_via_private_t * dev_priv);
-static int via_wait_idle(drm_via_private_t * dev_priv);
-static void via_pad_cache(drm_via_private_t * dev_priv, int qwords);
+static void via_cmdbuf_start(drm_via_private_t *dev_priv);
+static void via_cmdbuf_pause(drm_via_private_t *dev_priv);
+static void via_cmdbuf_reset(drm_via_private_t *dev_priv);
+static void via_cmdbuf_rewind(drm_via_private_t *dev_priv);
+static int via_wait_idle(drm_via_private_t *dev_priv);
+static void via_pad_cache(drm_via_private_t *dev_priv, int qwords);
/*
* Free space in command buffer.
*/
-static uint32_t via_cmdbuf_space(drm_via_private_t * dev_priv)
+static uint32_t via_cmdbuf_space(drm_via_private_t *dev_priv)
{
uint32_t agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
uint32_t hw_addr = *(dev_priv->hw_addr_ptr) - agp_base;
@@ -93,7 +93,7 @@ static uint32_t via_cmdbuf_space(drm_via_private_t * dev_priv)
* How much does the command regulator lag behind?
*/
-static uint32_t via_cmdbuf_lag(drm_via_private_t * dev_priv)
+static uint32_t via_cmdbuf_lag(drm_via_private_t *dev_priv)
{
uint32_t agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
uint32_t hw_addr = *(dev_priv->hw_addr_ptr) - agp_base;
@@ -108,7 +108,7 @@ static uint32_t via_cmdbuf_lag(drm_via_private_t * dev_priv)
*/
static inline int
-via_cmdbuf_wait(drm_via_private_t * dev_priv, unsigned int size)
+via_cmdbuf_wait(drm_via_private_t *dev_priv, unsigned int size)
{
uint32_t agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
uint32_t cur_addr, hw_addr, next_addr;
@@ -146,14 +146,13 @@ static inline uint32_t *via_check_dma(drm_via_private_t * dev_priv,
dev_priv->dma_high) {
via_cmdbuf_rewind(dev_priv);
}
- if (via_cmdbuf_wait(dev_priv, size) != 0) {
+ if (via_cmdbuf_wait(dev_priv, size) != 0)
return NULL;
- }
return (uint32_t *) (dev_priv->dma_ptr + dev_priv->dma_low);
}
-int via_dma_cleanup(struct drm_device * dev)
+int via_dma_cleanup(struct drm_device *dev)
{
if (dev->dev_private) {
drm_via_private_t *dev_priv =
@@ -171,9 +170,9 @@ int via_dma_cleanup(struct drm_device * dev)
return 0;
}
-static int via_initialize(struct drm_device * dev,
- drm_via_private_t * dev_priv,
- drm_via_dma_init_t * init)
+static int via_initialize(struct drm_device *dev,
+ drm_via_private_t *dev_priv,
+ drm_via_dma_init_t *init)
{
if (!dev_priv || !dev_priv->mmio) {
DRM_ERROR("via_dma_init called before via_map_init\n");
@@ -235,13 +234,13 @@ static int via_dma_init(struct drm_device *dev, void *data, struct drm_file *fil
switch (init->func) {
case VIA_INIT_DMA:
- if (!DRM_SUSER(DRM_CURPROC))
+ if (!capable(CAP_SYS_ADMIN))
retcode = -EPERM;
else
retcode = via_initialize(dev, dev_priv, init);
break;
case VIA_CLEANUP_DMA:
- if (!DRM_SUSER(DRM_CURPROC))
+ if (!capable(CAP_SYS_ADMIN))
retcode = -EPERM;
else
retcode = via_dma_cleanup(dev);
@@ -258,7 +257,7 @@ static int via_dma_init(struct drm_device *dev, void *data, struct drm_file *fil
return retcode;
}
-static int via_dispatch_cmdbuffer(struct drm_device * dev, drm_via_cmdbuffer_t * cmd)
+static int via_dispatch_cmdbuffer(struct drm_device *dev, drm_via_cmdbuffer_t *cmd)
{
drm_via_private_t *dev_priv;
uint32_t *vb;
@@ -271,11 +270,10 @@ static int via_dispatch_cmdbuffer(struct drm_device * dev, drm_via_cmdbuffer_t *
return -EFAULT;
}
- if (cmd->size > VIA_PCI_BUF_SIZE) {
+ if (cmd->size > VIA_PCI_BUF_SIZE)
return -ENOMEM;
- }
- if (DRM_COPY_FROM_USER(dev_priv->pci_buf, cmd->buf, cmd->size))
+ if (copy_from_user(dev_priv->pci_buf, cmd->buf, cmd->size))
return -EFAULT;
/*
@@ -291,9 +289,8 @@ static int via_dispatch_cmdbuffer(struct drm_device * dev, drm_via_cmdbuffer_t *
}
vb = via_check_dma(dev_priv, (cmd->size < 0x100) ? 0x102 : cmd->size);
- if (vb == NULL) {
+ if (vb == NULL)
return -EAGAIN;
- }
memcpy(vb, dev_priv->pci_buf, cmd->size);
@@ -311,13 +308,12 @@ static int via_dispatch_cmdbuffer(struct drm_device * dev, drm_via_cmdbuffer_t *
return 0;
}
-int via_driver_dma_quiescent(struct drm_device * dev)
+int via_driver_dma_quiescent(struct drm_device *dev)
{
drm_via_private_t *dev_priv = dev->dev_private;
- if (!via_wait_idle(dev_priv)) {
+ if (!via_wait_idle(dev_priv))
return -EBUSY;
- }
return 0;
}
@@ -339,23 +335,18 @@ static int via_cmdbuffer(struct drm_device *dev, void *data, struct drm_file *fi
DRM_DEBUG("buf %p size %lu\n", cmdbuf->buf, cmdbuf->size);
ret = via_dispatch_cmdbuffer(dev, cmdbuf);
- if (ret) {
- return ret;
- }
-
- return 0;
+ return ret;
}
-static int via_dispatch_pci_cmdbuffer(struct drm_device * dev,
- drm_via_cmdbuffer_t * cmd)
+static int via_dispatch_pci_cmdbuffer(struct drm_device *dev,
+ drm_via_cmdbuffer_t *cmd)
{
drm_via_private_t *dev_priv = dev->dev_private;
int ret;
- if (cmd->size > VIA_PCI_BUF_SIZE) {
+ if (cmd->size > VIA_PCI_BUF_SIZE)
return -ENOMEM;
- }
- if (DRM_COPY_FROM_USER(dev_priv->pci_buf, cmd->buf, cmd->size))
+ if (copy_from_user(dev_priv->pci_buf, cmd->buf, cmd->size))
return -EFAULT;
if ((ret =
@@ -380,19 +371,14 @@ static int via_pci_cmdbuffer(struct drm_device *dev, void *data, struct drm_file
DRM_DEBUG("buf %p size %lu\n", cmdbuf->buf, cmdbuf->size);
ret = via_dispatch_pci_cmdbuffer(dev, cmdbuf);
- if (ret) {
- return ret;
- }
-
- return 0;
+ return ret;
}
-static inline uint32_t *via_align_buffer(drm_via_private_t * dev_priv,
+static inline uint32_t *via_align_buffer(drm_via_private_t *dev_priv,
uint32_t * vb, int qw_count)
{
- for (; qw_count > 0; --qw_count) {
+ for (; qw_count > 0; --qw_count)
VIA_OUT_RING_QW(HC_DUMMY, HC_DUMMY);
- }
return vb;
}
@@ -401,7 +387,7 @@ static inline uint32_t *via_align_buffer(drm_via_private_t * dev_priv,
*
* Returns virtual pointer to ring buffer.
*/
-static inline uint32_t *via_get_dma(drm_via_private_t * dev_priv)
+static inline uint32_t *via_get_dma(drm_via_private_t *dev_priv)
{
return (uint32_t *) (dev_priv->dma_ptr + dev_priv->dma_low);
}
@@ -411,18 +397,18 @@ static inline uint32_t *via_get_dma(drm_via_private_t * dev_priv)
* modifying the pause address stored in the buffer itself. If
* the regulator has already paused, restart it.
*/
-static int via_hook_segment(drm_via_private_t * dev_priv,
+static int via_hook_segment(drm_via_private_t *dev_priv,
uint32_t pause_addr_hi, uint32_t pause_addr_lo,
int no_pci_fire)
{
int paused, count;
volatile uint32_t *paused_at = dev_priv->last_pause_ptr;
- uint32_t reader,ptr;
+ uint32_t reader, ptr;
uint32_t diff;
paused = 0;
via_flush_write_combine();
- (void) *(volatile uint32_t *)(via_get_dma(dev_priv) -1);
+ (void) *(volatile uint32_t *)(via_get_dma(dev_priv) - 1);
*paused_at = pause_addr_lo;
via_flush_write_combine();
@@ -435,7 +421,7 @@ static int via_hook_segment(drm_via_private_t * dev_priv,
dev_priv->last_pause_ptr = via_get_dma(dev_priv) - 1;
/*
- * If there is a possibility that the command reader will
+ * If there is a possibility that the command reader will
* miss the new pause address and pause on the old one,
* In that case we need to program the new start address
* using PCI.
@@ -443,9 +429,9 @@ static int via_hook_segment(drm_via_private_t * dev_priv,
diff = (uint32_t) (ptr - reader) - dev_priv->dma_diff;
count = 10000000;
- while(diff == 0 && count--) {
+ while (diff == 0 && count--) {
paused = (VIA_READ(0x41c) & 0x80000000);
- if (paused)
+ if (paused)
break;
reader = *(dev_priv->hw_addr_ptr);
diff = (uint32_t) (ptr - reader) - dev_priv->dma_diff;
@@ -477,7 +463,7 @@ static int via_hook_segment(drm_via_private_t * dev_priv,
return paused;
}
-static int via_wait_idle(drm_via_private_t * dev_priv)
+static int via_wait_idle(drm_via_private_t *dev_priv)
{
int count = 10000000;
@@ -491,9 +477,9 @@ static int via_wait_idle(drm_via_private_t * dev_priv)
return count;
}
-static uint32_t *via_align_cmd(drm_via_private_t * dev_priv, uint32_t cmd_type,
- uint32_t addr, uint32_t * cmd_addr_hi,
- uint32_t * cmd_addr_lo, int skip_wait)
+static uint32_t *via_align_cmd(drm_via_private_t *dev_priv, uint32_t cmd_type,
+ uint32_t addr, uint32_t *cmd_addr_hi,
+ uint32_t *cmd_addr_lo, int skip_wait)
{
uint32_t agp_base;
uint32_t cmd_addr, addr_lo, addr_hi;
@@ -521,7 +507,7 @@ static uint32_t *via_align_cmd(drm_via_private_t * dev_priv, uint32_t cmd_type,
return vb;
}
-static void via_cmdbuf_start(drm_via_private_t * dev_priv)
+static void via_cmdbuf_start(drm_via_private_t *dev_priv)
{
uint32_t pause_addr_lo, pause_addr_hi;
uint32_t start_addr, start_addr_lo;
@@ -557,7 +543,7 @@ static void via_cmdbuf_start(drm_via_private_t * dev_priv)
VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi);
VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo);
- DRM_WRITEMEMORYBARRIER();
+ wmb();
VIA_WRITE(VIA_REG_TRANSPACE, command | HC_HAGPCMNT_MASK);
VIA_READ(VIA_REG_TRANSPACE);
@@ -580,7 +566,7 @@ static void via_cmdbuf_start(drm_via_private_t * dev_priv)
dev_priv->dma_diff = ptr - reader;
}
-static void via_pad_cache(drm_via_private_t * dev_priv, int qwords)
+static void via_pad_cache(drm_via_private_t *dev_priv, int qwords)
{
uint32_t *vb;
@@ -590,7 +576,7 @@ static void via_pad_cache(drm_via_private_t * dev_priv, int qwords)
via_align_buffer(dev_priv, vb, qwords);
}
-static inline void via_dummy_bitblt(drm_via_private_t * dev_priv)
+static inline void via_dummy_bitblt(drm_via_private_t *dev_priv)
{
uint32_t *vb = via_get_dma(dev_priv);
SetReg2DAGP(0x0C, (0 | (0 << 16)));
@@ -598,7 +584,7 @@ static inline void via_dummy_bitblt(drm_via_private_t * dev_priv)
SetReg2DAGP(0x0, 0x1 | 0x2000 | 0xAA000000);
}
-static void via_cmdbuf_jump(drm_via_private_t * dev_priv)
+static void via_cmdbuf_jump(drm_via_private_t *dev_priv)
{
uint32_t agp_base;
uint32_t pause_addr_lo, pause_addr_hi;
@@ -617,9 +603,8 @@ static void via_cmdbuf_jump(drm_via_private_t * dev_priv)
*/
dev_priv->dma_low = 0;
- if (via_cmdbuf_wait(dev_priv, CMDBUF_ALIGNMENT_SIZE) != 0) {
+ if (via_cmdbuf_wait(dev_priv, CMDBUF_ALIGNMENT_SIZE) != 0)
DRM_ERROR("via_cmdbuf_jump failed\n");
- }
via_dummy_bitblt(dev_priv);
via_dummy_bitblt(dev_priv);
@@ -657,12 +642,12 @@ static void via_cmdbuf_jump(drm_via_private_t * dev_priv)
}
-static void via_cmdbuf_rewind(drm_via_private_t * dev_priv)
+static void via_cmdbuf_rewind(drm_via_private_t *dev_priv)
{
via_cmdbuf_jump(dev_priv);
}
-static void via_cmdbuf_flush(drm_via_private_t * dev_priv, uint32_t cmd_type)
+static void via_cmdbuf_flush(drm_via_private_t *dev_priv, uint32_t cmd_type)
{
uint32_t pause_addr_lo, pause_addr_hi;
@@ -670,12 +655,12 @@ static void via_cmdbuf_flush(drm_via_private_t * dev_priv, uint32_t cmd_type)
via_hook_segment(dev_priv, pause_addr_hi, pause_addr_lo, 0);
}
-static void via_cmdbuf_pause(drm_via_private_t * dev_priv)
+static void via_cmdbuf_pause(drm_via_private_t *dev_priv)
{
via_cmdbuf_flush(dev_priv, HC_HAGPBpID_PAUSE);
}
-static void via_cmdbuf_reset(drm_via_private_t * dev_priv)
+static void via_cmdbuf_reset(drm_via_private_t *dev_priv)
{
via_cmdbuf_flush(dev_priv, HC_HAGPBpID_STOP);
via_wait_idle(dev_priv);
@@ -708,9 +693,8 @@ static int via_cmdbuf_size(struct drm_device *dev, void *data, struct drm_file *
case VIA_CMDBUF_SPACE:
while (((tmp_size = via_cmdbuf_space(dev_priv)) < d_siz->size)
&& --count) {
- if (!d_siz->wait) {
+ if (!d_siz->wait)
break;
- }
}
if (!count) {
DRM_ERROR("VIA_CMDBUF_SPACE timed out.\n");
@@ -720,9 +704,8 @@ static int via_cmdbuf_size(struct drm_device *dev, void *data, struct drm_file *
case VIA_CMDBUF_LAG:
while (((tmp_size = via_cmdbuf_lag(dev_priv)) > d_siz->size)
&& --count) {
- if (!d_siz->wait) {
+ if (!d_siz->wait)
break;
- }
}
if (!count) {
DRM_ERROR("VIA_CMDBUF_LAG timed out.\n");
@@ -737,21 +720,21 @@ static int via_cmdbuf_size(struct drm_device *dev, void *data, struct drm_file *
return ret;
}
-struct drm_ioctl_desc via_ioctls[] = {
- DRM_IOCTL_DEF(DRM_VIA_ALLOCMEM, via_mem_alloc, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_FREEMEM, via_mem_free, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_AGP_INIT, via_agp_init, DRM_AUTH|DRM_MASTER),
- DRM_IOCTL_DEF(DRM_VIA_FB_INIT, via_fb_init, DRM_AUTH|DRM_MASTER),
- DRM_IOCTL_DEF(DRM_VIA_MAP_INIT, via_map_init, DRM_AUTH|DRM_MASTER),
- DRM_IOCTL_DEF(DRM_VIA_DEC_FUTEX, via_decoder_futex, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_DMA_INIT, via_dma_init, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_CMDBUFFER, via_cmdbuffer, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_FLUSH, via_flush_ioctl, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_PCICMD, via_pci_cmdbuffer, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_CMDBUF_SIZE, via_cmdbuf_size, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_WAIT_IRQ, via_wait_irq, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_DMA_BLIT, via_dma_blit, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_VIA_BLIT_SYNC, via_dma_blit_sync, DRM_AUTH)
+const struct drm_ioctl_desc via_ioctls[] = {
+ DRM_IOCTL_DEF_DRV(VIA_ALLOCMEM, via_mem_alloc, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_FREEMEM, via_mem_free, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_AGP_INIT, via_agp_init, DRM_AUTH|DRM_MASTER),
+ DRM_IOCTL_DEF_DRV(VIA_FB_INIT, via_fb_init, DRM_AUTH|DRM_MASTER),
+ DRM_IOCTL_DEF_DRV(VIA_MAP_INIT, via_map_init, DRM_AUTH|DRM_MASTER),
+ DRM_IOCTL_DEF_DRV(VIA_DEC_FUTEX, via_decoder_futex, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_DMA_INIT, via_dma_init, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_CMDBUFFER, via_cmdbuffer, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_FLUSH, via_flush_ioctl, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_PCICMD, via_pci_cmdbuffer, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_CMDBUF_SIZE, via_cmdbuf_size, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_WAIT_IRQ, via_wait_irq, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_DMA_BLIT, via_dma_blit, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(VIA_BLIT_SYNC, via_dma_blit_sync, DRM_AUTH)
};
-int via_max_ioctl = DRM_ARRAY_SIZE(via_ioctls);
+int via_max_ioctl = ARRAY_SIZE(via_ioctls);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 20:46:22 +0000