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Commit b68bdc1b authored by Dave Airlie's avatar Dave Airlie
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Merge branch 'next' of git://people.freedesktop.org/~deathsimple/linux into drm-next 

This contains all the radeon documentation rebased on top of the ib fixes.

* 'next' of git://people.freedesktop.org/~deathsimple/linux:
  drm/radeon: fix SS setup for DCPLL
  drm/radeon: fix up pll selection on DCE5/6
  drm/radeon: start to document evergreen.c
  drm/radeon: start to document the functions r100.c
  drm/radeon: document VM functions in radeon_gart.c (v3)
  drm/radeon: document non-VM functions in radeon_gart.c (v2)
  drm/radeon: document radeon_ring.c (v4)
  drm/radeon: document radeon_fence.c (v2)
  drm/radeon: document radeon_asic.c
  drm/radeon: document radeon_irq_kms.c
  drm/radeon: document radeon_kms.c
  drm/radeon: document radeon_device.c (v2)
  drm/radeon: add rptr save support for r1xx-r5xx
  drm/radeon: update rptr saving logic for memory buffers
  drm/radeon: remove radeon_ring_index()
  drm/radeon: update ib_execute for SI (v2)
  drm/radeon: fix const IB handling v2
  drm/radeon: let sa manager block for fences to wait for v2
  drm/radeon: return an error if there is nothing to wait for
parents 29935554 f312f093
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drivers/gpu/drm/radeon/atombios_crtc.c
View file @ b68bdc1b
......@@ -457,22 +457,18 @@ static void atombios_crtc_program_ss(struct radeon_device *rdev,
switch (pll_id) {
case ATOM_PPLL1:
args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_P1PLL;
args.v3.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
args.v3.usSpreadSpectrumStep = cpu_to_le16(ss->step);
break;
case ATOM_PPLL2:
args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_P2PLL;
args.v3.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
args.v3.usSpreadSpectrumStep = cpu_to_le16(ss->step);
break;
case ATOM_DCPLL:
args.v3.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V3_DCPLL;
args.v3.usSpreadSpectrumAmount = cpu_to_le16(0);
args.v3.usSpreadSpectrumStep = cpu_to_le16(0);
break;
case ATOM_PPLL_INVALID:
return;
}
args.v3.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
args.v3.usSpreadSpectrumStep = cpu_to_le16(ss->step);
args.v3.ucEnable = enable;
if ((ss->percentage == 0) || (ss->type & ATOM_EXTERNAL_SS_MASK) || ASIC_IS_DCE61(rdev))
args.v3.ucEnable = ATOM_DISABLE;
......@@ -482,22 +478,18 @@ static void atombios_crtc_program_ss(struct radeon_device *rdev,
switch (pll_id) {
case ATOM_PPLL1:
args.v2.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V2_P1PLL;
args.v2.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
args.v2.usSpreadSpectrumStep = cpu_to_le16(ss->step);
break;
case ATOM_PPLL2:
args.v2.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V2_P2PLL;
args.v2.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
args.v2.usSpreadSpectrumStep = cpu_to_le16(ss->step);
break;
case ATOM_DCPLL:
args.v2.ucSpreadSpectrumType |= ATOM_PPLL_SS_TYPE_V2_DCPLL;
args.v2.usSpreadSpectrumAmount = cpu_to_le16(0);
args.v2.usSpreadSpectrumStep = cpu_to_le16(0);
break;
case ATOM_PPLL_INVALID:
return;
}
args.v2.usSpreadSpectrumAmount = cpu_to_le16(ss->amount);
args.v2.usSpreadSpectrumStep = cpu_to_le16(ss->step);
args.v2.ucEnable = enable;
if ((ss->percentage == 0) || (ss->type & ATOM_EXTERNAL_SS_MASK) || ASIC_IS_DCE41(rdev))
args.v2.ucEnable = ATOM_DISABLE;
......@@ -1539,7 +1531,11 @@ static int radeon_atom_pick_pll(struct drm_crtc *crtc)
* crtc virtual pixel clock.
*/
if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(test_encoder))) {
if (ASIC_IS_DCE5(rdev) || rdev->clock.dp_extclk)
if (ASIC_IS_DCE5(rdev))
return ATOM_DCPLL;
else if (ASIC_IS_DCE6(rdev))
return ATOM_PPLL0;
else if (rdev->clock.dp_extclk)
return ATOM_PPLL_INVALID;
}
}
......
drivers/gpu/drm/radeon/evergreen.c
View file @ b68bdc1b
......@@ -99,6 +99,14 @@ void evergreen_fix_pci_max_read_req_size(struct radeon_device *rdev)
}
}
/**
* dce4_wait_for_vblank - vblank wait asic callback.
*
* @rdev: radeon_device pointer
* @crtc: crtc to wait for vblank on
*
* Wait for vblank on the requested crtc (evergreen+).
*/
void dce4_wait_for_vblank(struct radeon_device *rdev, int crtc)
{
struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc];
......@@ -118,18 +126,49 @@ void dce4_wait_for_vblank(struct radeon_device *rdev, int crtc)
}
}
/**
* radeon_irq_kms_pflip_irq_get - pre-pageflip callback.
*
* @rdev: radeon_device pointer
* @crtc: crtc to prepare for pageflip on
*
* Pre-pageflip callback (evergreen+).
* Enables the pageflip irq (vblank irq).
*/
void evergreen_pre_page_flip(struct radeon_device *rdev, int crtc)
{
/* enable the pflip int */
radeon_irq_kms_pflip_irq_get(rdev, crtc);
}
/**
* evergreen_post_page_flip - pos-pageflip callback.
*
* @rdev: radeon_device pointer
* @crtc: crtc to cleanup pageflip on
*
* Post-pageflip callback (evergreen+).
* Disables the pageflip irq (vblank irq).
*/
void evergreen_post_page_flip(struct radeon_device *rdev, int crtc)
{
/* disable the pflip int */
radeon_irq_kms_pflip_irq_put(rdev, crtc);
}
/**
* evergreen_page_flip - pageflip callback.
*
* @rdev: radeon_device pointer
* @crtc_id: crtc to cleanup pageflip on
* @crtc_base: new address of the crtc (GPU MC address)
*
* Does the actual pageflip (evergreen+).
* During vblank we take the crtc lock and wait for the update_pending
* bit to go high, when it does, we release the lock, and allow the
* double buffered update to take place.
* Returns the current update pending status.
*/
u32 evergreen_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
{
struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
......@@ -214,6 +253,15 @@ int sumo_get_temp(struct radeon_device *rdev)
return actual_temp * 1000;
}
/**
* sumo_pm_init_profile - Initialize power profiles callback.
*
* @rdev: radeon_device pointer
*
* Initialize the power states used in profile mode
* (sumo, trinity, SI).
* Used for profile mode only.
*/
void sumo_pm_init_profile(struct radeon_device *rdev)
{
int idx;
......@@ -265,6 +313,14 @@ void sumo_pm_init_profile(struct radeon_device *rdev)
rdev->pm.power_state[idx].num_clock_modes - 1;
}
/**
* evergreen_pm_misc - set additional pm hw parameters callback.
*
* @rdev: radeon_device pointer
*
* Set non-clock parameters associated with a power state
* (voltage, etc.) (evergreen+).
*/
void evergreen_pm_misc(struct radeon_device *rdev)
{
int req_ps_idx = rdev->pm.requested_power_state_index;
......@@ -292,6 +348,13 @@ void evergreen_pm_misc(struct radeon_device *rdev)
}
}
/**
* evergreen_pm_prepare - pre-power state change callback.
*
* @rdev: radeon_device pointer
*
* Prepare for a power state change (evergreen+).
*/
void evergreen_pm_prepare(struct radeon_device *rdev)
{
struct drm_device *ddev = rdev->ddev;
......@@ -310,6 +373,13 @@ void evergreen_pm_prepare(struct radeon_device *rdev)
}
}
/**
* evergreen_pm_finish - post-power state change callback.
*
* @rdev: radeon_device pointer
*
* Clean up after a power state change (evergreen+).
*/
void evergreen_pm_finish(struct radeon_device *rdev)
{
struct drm_device *ddev = rdev->ddev;
......@@ -328,6 +398,15 @@ void evergreen_pm_finish(struct radeon_device *rdev)
}
}
/**
* evergreen_hpd_sense - hpd sense callback.
*
* @rdev: radeon_device pointer
* @hpd: hpd (hotplug detect) pin
*
* Checks if a digital monitor is connected (evergreen+).
* Returns true if connected, false if not connected.
*/
bool evergreen_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
{
bool connected = false;
......@@ -364,6 +443,14 @@ bool evergreen_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
return connected;
}
/**
* evergreen_hpd_set_polarity - hpd set polarity callback.
*
* @rdev: radeon_device pointer
* @hpd: hpd (hotplug detect) pin
*
* Set the polarity of the hpd pin (evergreen+).
*/
void evergreen_hpd_set_polarity(struct radeon_device *rdev,
enum radeon_hpd_id hpd)
{
......@@ -424,6 +511,14 @@ void evergreen_hpd_set_polarity(struct radeon_device *rdev,
}
}
/**
* evergreen_hpd_init - hpd setup callback.
*
* @rdev: radeon_device pointer
*
* Setup the hpd pins used by the card (evergreen+).
* Enable the pin, set the polarity, and enable the hpd interrupts.
*/
void evergreen_hpd_init(struct radeon_device *rdev)
{
struct drm_device *dev = rdev->ddev;
......@@ -462,6 +557,14 @@ void evergreen_hpd_init(struct radeon_device *rdev)
radeon_irq_kms_enable_hpd(rdev, enabled);
}
/**
* evergreen_hpd_fini - hpd tear down callback.
*
* @rdev: radeon_device pointer
*
* Tear down the hpd pins used by the card (evergreen+).
* Disable the hpd interrupts.
*/
void evergreen_hpd_fini(struct radeon_device *rdev)
{
struct drm_device *dev = rdev->ddev;
......@@ -925,6 +1028,14 @@ static void evergreen_program_watermarks(struct radeon_device *rdev,
}
/**
* evergreen_bandwidth_update - update display watermarks callback.
*
* @rdev: radeon_device pointer
*
* Update the display watermarks based on the requested mode(s)
* (evergreen+).
*/
void evergreen_bandwidth_update(struct radeon_device *rdev)
{
struct drm_display_mode *mode0 = NULL;
......@@ -948,6 +1059,15 @@ void evergreen_bandwidth_update(struct radeon_device *rdev)
}
}
/**
* evergreen_mc_wait_for_idle - wait for MC idle callback.
*
* @rdev: radeon_device pointer
*
* Wait for the MC (memory controller) to be idle.
* (evergreen+).
* Returns 0 if the MC is idle, -1 if not.
*/
int evergreen_mc_wait_for_idle(struct radeon_device *rdev)
{
unsigned i;
......@@ -1364,17 +1484,25 @@ void evergreen_mc_program(struct radeon_device *rdev)
void evergreen_ring_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
{
struct radeon_ring *ring = &rdev->ring[ib->ring];
u32 next_rptr;
/* set to DX10/11 mode */
radeon_ring_write(ring, PACKET3(PACKET3_MODE_CONTROL, 0));
radeon_ring_write(ring, 1);
if (ring->rptr_save_reg) {
uint32_t next_rptr = ring->wptr + 3 + 4;
next_rptr = ring->wptr + 3 + 4;
radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
radeon_ring_write(ring, ((ring->rptr_save_reg -
PACKET3_SET_CONFIG_REG_START) >> 2));
radeon_ring_write(ring, next_rptr);
} else if (rdev->wb.enabled) {
next_rptr = ring->wptr + 5 + 4;
radeon_ring_write(ring, PACKET3(PACKET3_MEM_WRITE, 3));
radeon_ring_write(ring, ring->next_rptr_gpu_addr & 0xfffffffc);
radeon_ring_write(ring, (upper_32_bits(ring->next_rptr_gpu_addr) & 0xff) | (1 << 18));
radeon_ring_write(ring, next_rptr);
radeon_ring_write(ring, 0);
}
radeon_ring_write(ring, PACKET3(PACKET3_INDIRECT_BUFFER, 2));
......
drivers/gpu/drm/radeon/r100.c
View file @ b68bdc1b
......@@ -65,6 +65,19 @@ MODULE_FIRMWARE(FIRMWARE_R520);
#include "r100_track.h"
/* This files gather functions specifics to:
* r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280
* and others in some cases.
*/
/**
* r100_wait_for_vblank - vblank wait asic callback.
*
* @rdev: radeon_device pointer
* @crtc: crtc to wait for vblank on
*
* Wait for vblank on the requested crtc (r1xx-r4xx).
*/
void r100_wait_for_vblank(struct radeon_device *rdev, int crtc)
{
struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc];
......@@ -99,22 +112,49 @@ void r100_wait_for_vblank(struct radeon_device *rdev, int crtc)
}
}
/* This files gather functions specifics to:
* r100,rv100,rs100,rv200,rs200,r200,rv250,rs300,rv280
/**
* r100_pre_page_flip - pre-pageflip callback.
*
* @rdev: radeon_device pointer
* @crtc: crtc to prepare for pageflip on
*
* Pre-pageflip callback (r1xx-r4xx).
* Enables the pageflip irq (vblank irq).
*/
void r100_pre_page_flip(struct radeon_device *rdev, int crtc)
{
/* enable the pflip int */
radeon_irq_kms_pflip_irq_get(rdev, crtc);
}
/**
* r100_post_page_flip - pos-pageflip callback.
*
* @rdev: radeon_device pointer
* @crtc: crtc to cleanup pageflip on
*
* Post-pageflip callback (r1xx-r4xx).
* Disables the pageflip irq (vblank irq).
*/
void r100_post_page_flip(struct radeon_device *rdev, int crtc)
{
/* disable the pflip int */
radeon_irq_kms_pflip_irq_put(rdev, crtc);
}
/**
* r100_page_flip - pageflip callback.
*
* @rdev: radeon_device pointer
* @crtc_id: crtc to cleanup pageflip on
* @crtc_base: new address of the crtc (GPU MC address)
*
* Does the actual pageflip (r1xx-r4xx).
* During vblank we take the crtc lock and wait for the update_pending
* bit to go high, when it does, we release the lock, and allow the
* double buffered update to take place.
* Returns the current update pending status.
*/
u32 r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
{
struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
......@@ -141,6 +181,15 @@ u32 r100_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
return RREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset) & RADEON_CRTC_OFFSET__GUI_TRIG_OFFSET;
}
/**
* r100_pm_get_dynpm_state - look up dynpm power state callback.
*
* @rdev: radeon_device pointer
*
* Look up the optimal power state based on the
* current state of the GPU (r1xx-r5xx).
* Used for dynpm only.
*/
void r100_pm_get_dynpm_state(struct radeon_device *rdev)
{
int i;
......@@ -223,6 +272,15 @@ void r100_pm_get_dynpm_state(struct radeon_device *rdev)
pcie_lanes);
}
/**
* r100_pm_init_profile - Initialize power profiles callback.
*
* @rdev: radeon_device pointer
*
* Initialize the power states used in profile mode
* (r1xx-r3xx).
* Used for profile mode only.
*/
void r100_pm_init_profile(struct radeon_device *rdev)
{
/* default */
......@@ -262,6 +320,14 @@ void r100_pm_init_profile(struct radeon_device *rdev)
rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx = 0;
}
/**
* r100_pm_misc - set additional pm hw parameters callback.
*
* @rdev: radeon_device pointer
*
* Set non-clock parameters associated with a power state
* (voltage, pcie lanes, etc.) (r1xx-r4xx).
*/
void r100_pm_misc(struct radeon_device *rdev)
{
int requested_index = rdev->pm.requested_power_state_index;
......@@ -353,6 +419,13 @@ void r100_pm_misc(struct radeon_device *rdev)
}
}
/**
* r100_pm_prepare - pre-power state change callback.
*
* @rdev: radeon_device pointer
*
* Prepare for a power state change (r1xx-r4xx).
*/
void r100_pm_prepare(struct radeon_device *rdev)
{
struct drm_device *ddev = rdev->ddev;
......@@ -377,6 +450,13 @@ void r100_pm_prepare(struct radeon_device *rdev)
}
}
/**
* r100_pm_finish - post-power state change callback.
*
* @rdev: radeon_device pointer
*
* Clean up after a power state change (r1xx-r4xx).
*/
void r100_pm_finish(struct radeon_device *rdev)
{
struct drm_device *ddev = rdev->ddev;
......@@ -401,6 +481,14 @@ void r100_pm_finish(struct radeon_device *rdev)
}
}
/**
* r100_gui_idle - gui idle callback.
*
* @rdev: radeon_device pointer
*
* Check of the GUI (2D/3D engines) are idle (r1xx-r5xx).
* Returns true if idle, false if not.
*/
bool r100_gui_idle(struct radeon_device *rdev)
{
if (RREG32(RADEON_RBBM_STATUS) & RADEON_RBBM_ACTIVE)
......@@ -410,6 +498,15 @@ bool r100_gui_idle(struct radeon_device *rdev)
}
/* hpd for digital panel detect/disconnect */
/**
* r100_hpd_sense - hpd sense callback.
*
* @rdev: radeon_device pointer
* @hpd: hpd (hotplug detect) pin
*
* Checks if a digital monitor is connected (r1xx-r4xx).
* Returns true if connected, false if not connected.
*/
bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
{
bool connected = false;
......@@ -429,6 +526,14 @@ bool r100_hpd_sense(struct radeon_device *rdev, enum radeon_hpd_id hpd)
return connected;
}
/**
* r100_hpd_set_polarity - hpd set polarity callback.
*
* @rdev: radeon_device pointer
* @hpd: hpd (hotplug detect) pin
*
* Set the polarity of the hpd pin (r1xx-r4xx).
*/
void r100_hpd_set_polarity(struct radeon_device *rdev,
enum radeon_hpd_id hpd)
{
......@@ -457,6 +562,14 @@ void r100_hpd_set_polarity(struct radeon_device *rdev,
}
}
/**
* r100_hpd_init - hpd setup callback.
*
* @rdev: radeon_device pointer
*
* Setup the hpd pins used by the card (r1xx-r4xx).
* Set the polarity, and enable the hpd interrupts.
*/
void r100_hpd_init(struct radeon_device *rdev)
{
struct drm_device *dev = rdev->ddev;
......@@ -471,6 +584,14 @@ void r100_hpd_init(struct radeon_device *rdev)
radeon_irq_kms_enable_hpd(rdev, enable);
}
/**
* r100_hpd_fini - hpd tear down callback.
*
* @rdev: radeon_device pointer
*
* Tear down the hpd pins used by the card (r1xx-r4xx).
* Disable the hpd interrupts.
*/
void r100_hpd_fini(struct radeon_device *rdev)
{
struct drm_device *dev = rdev->ddev;
......@@ -1060,6 +1181,14 @@ int r100_cp_init(struct radeon_device *rdev, unsigned ring_size)
}
ring->ready = true;
radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size);
if (radeon_ring_supports_scratch_reg(rdev, ring)) {
r = radeon_scratch_get(rdev, &ring->rptr_save_reg);
if (r) {
DRM_ERROR("failed to get scratch reg for rptr save (%d).\n", r);
ring->rptr_save_reg = 0;
}
}
return 0;
}
......@@ -1070,6 +1199,7 @@ void r100_cp_fini(struct radeon_device *rdev)
}
/* Disable ring */
r100_cp_disable(rdev);
radeon_scratch_free(rdev, rdev->ring[RADEON_RING_TYPE_GFX_INDEX].rptr_save_reg);
radeon_ring_fini(rdev, &rdev->ring[RADEON_RING_TYPE_GFX_INDEX]);
DRM_INFO("radeon: cp finalized\n");
}
......@@ -3661,6 +3791,12 @@ void r100_ring_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
{
struct radeon_ring *ring = &rdev->ring[RADEON_RING_TYPE_GFX_INDEX];
if (ring->rptr_save_reg) {
u32 next_rptr = ring->wptr + 2 + 3;
radeon_ring_write(ring, PACKET0(ring->rptr_save_reg, 0));
radeon_ring_write(ring, next_rptr);
}
radeon_ring_write(ring, PACKET0(RADEON_CP_IB_BASE, 1));
radeon_ring_write(ring, ib->gpu_addr);
radeon_ring_write(ring, ib->length_dw);
......@@ -3693,7 +3829,7 @@ int r100_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
ib.ptr[6] = PACKET2(0);
ib.ptr[7] = PACKET2(0);
ib.length_dw = 8;
r = radeon_ib_schedule(rdev, &ib);
r = radeon_ib_schedule(rdev, &ib, NULL);
if (r) {
radeon_scratch_free(rdev, scratch);
radeon_ib_free(rdev, &ib);
......
drivers/gpu/drm/radeon/r600.c
View file @ b68bdc1b
......@@ -2163,10 +2163,12 @@ void r600_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsign
ring->ring_size = ring_size;
ring->align_mask = 16 - 1;
r = radeon_scratch_get(rdev, &ring->rptr_save_reg);
if (r) {
DRM_ERROR("failed to get scratch reg for rptr save (%d).\n", r);
ring->rptr_save_reg = 0;
if (radeon_ring_supports_scratch_reg(rdev, ring)) {
r = radeon_scratch_get(rdev, &ring->rptr_save_reg);
if (r) {
DRM_ERROR("failed to get scratch reg for rptr save (%d).\n", r);
ring->rptr_save_reg = 0;
}
}
}
......@@ -2198,7 +2200,7 @@ int r600_ring_test(struct radeon_device *rdev, struct radeon_ring *ring)
{
uint32_t scratch;
uint32_t tmp = 0;
unsigned i, ridx = radeon_ring_index(rdev, ring);
unsigned i;
int r;
r = radeon_scratch_get(rdev, &scratch);
......@@ -2209,7 +2211,7 @@ int r600_ring_test(struct radeon_device *rdev, struct radeon_ring *ring)
WREG32(scratch, 0xCAFEDEAD);
r = radeon_ring_lock(rdev, ring, 3);
if (r) {
DRM_ERROR("radeon: cp failed to lock ring %d (%d).\n", ridx, r);
DRM_ERROR("radeon: cp failed to lock ring %d (%d).\n", ring->idx, r);
radeon_scratch_free(rdev, scratch);
return r;
}
......@@ -2224,10 +2226,10 @@ int r600_ring_test(struct radeon_device *rdev, struct radeon_ring *ring)
DRM_UDELAY(1);
}
if (i < rdev->usec_timeout) {
DRM_INFO("ring test on %d succeeded in %d usecs\n", ridx, i);
DRM_INFO("ring test on %d succeeded in %d usecs\n", ring->idx, i);
} else {
DRM_ERROR("radeon: ring %d test failed (scratch(0x%04X)=0x%08X)\n",
ridx, scratch, tmp);
ring->idx, scratch, tmp);
r = -EINVAL;
}
radeon_scratch_free(rdev, scratch);
......@@ -2576,13 +2578,21 @@ void r600_fini(struct radeon_device *rdev)
void r600_ring_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
{
struct radeon_ring *ring = &rdev->ring[ib->ring];
u32 next_rptr;
if (ring->rptr_save_reg) {
uint32_t next_rptr = ring->wptr + 3 + 4;
next_rptr = ring->wptr + 3 + 4;
radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
radeon_ring_write(ring, ((ring->rptr_save_reg -
PACKET3_SET_CONFIG_REG_OFFSET) >> 2));
radeon_ring_write(ring, next_rptr);
} else if (rdev->wb.enabled) {
next_rptr = ring->wptr + 5 + 4;
radeon_ring_write(ring, PACKET3(PACKET3_MEM_WRITE, 3));
radeon_ring_write(ring, ring->next_rptr_gpu_addr & 0xfffffffc);
radeon_ring_write(ring, (upper_32_bits(ring->next_rptr_gpu_addr) & 0xff) | (1 << 18));
radeon_ring_write(ring, next_rptr);
radeon_ring_write(ring, 0);
}
radeon_ring_write(ring, PACKET3(PACKET3_INDIRECT_BUFFER, 2));
......@@ -2602,7 +2612,6 @@ int r600_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
uint32_t tmp = 0;
unsigned i;
int r;
int ring_index = radeon_ring_index(rdev, ring);
r = radeon_scratch_get(rdev, &scratch);
if (r) {
......@@ -2610,7 +2619,7 @@ int r600_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
return r;
}
WREG32(scratch, 0xCAFEDEAD);
r = radeon_ib_get(rdev, ring_index, &ib, 256);
r = radeon_ib_get(rdev, ring->idx, &ib, 256);
if (r) {
DRM_ERROR("radeon: failed to get ib (%d).\n", r);
return r;
......@@ -2619,7 +2628,7 @@ int r600_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
ib.ptr[1] = ((scratch - PACKET3_SET_CONFIG_REG_OFFSET) >> 2);
ib.ptr[2] = 0xDEADBEEF;
ib.length_dw = 3;
r = radeon_ib_schedule(rdev, &ib);
r = radeon_ib_schedule(rdev, &ib, NULL);
if (r) {
radeon_scratch_free(rdev, scratch);
radeon_ib_free(rdev, &ib);
......
drivers/gpu/drm/radeon/radeon.h
View file @ b68bdc1b
......@@ -362,7 +362,7 @@ struct radeon_bo_list {
* alignment).
*/
struct radeon_sa_manager {
spinlock_t lock;
wait_queue_head_t wq;
struct radeon_bo *bo;
struct list_head *hole;
struct list_head flist[RADEON_NUM_RINGS];
......@@ -623,6 +623,8 @@ struct radeon_ring {
unsigned rptr_offs;
unsigned rptr_reg;
unsigned rptr_save_reg;
u64 next_rptr_gpu_addr;
volatile u32 *next_rptr_cpu_addr;
unsigned wptr;
unsigned wptr_old;
unsigned wptr_reg;
......@@ -638,6 +640,7 @@ struct radeon_ring {
u32 ptr_reg_shift;
u32 ptr_reg_mask;
u32 nop;
u32 idx;
};
/*
......@@ -751,12 +754,14 @@ struct si_rlc {
int radeon_ib_get(struct radeon_device *rdev, int ring,
struct radeon_ib *ib, unsigned size);
void radeon_ib_free(struct radeon_device *rdev, struct radeon_ib *ib);
int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib);
int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib,
struct radeon_ib *const_ib);
int radeon_ib_pool_init(struct radeon_device *rdev);
void radeon_ib_pool_fini(struct radeon_device *rdev);
int radeon_ib_ring_tests(struct radeon_device *rdev);
/* Ring access between begin & end cannot sleep */
int radeon_ring_index(struct radeon_device *rdev, struct radeon_ring *cp);
bool radeon_ring_supports_scratch_reg(struct radeon_device *rdev,
struct radeon_ring *ring);
void radeon_ring_free_size(struct radeon_device *rdev, struct radeon_ring *cp);
int radeon_ring_alloc(struct radeon_device *rdev, struct radeon_ring *cp, unsigned ndw);
int radeon_ring_lock(struct radeon_device *rdev, struct radeon_ring *cp, unsigned ndw);
......@@ -870,6 +875,7 @@ struct radeon_wb {
};
#define RADEON_WB_SCRATCH_OFFSET 0
#define RADEON_WB_RING0_NEXT_RPTR 256
#define RADEON_WB_CP_RPTR_OFFSET 1024
#define RADEON_WB_CP1_RPTR_OFFSET 1280
#define RADEON_WB_CP2_RPTR_OFFSET 1536
......
drivers/gpu/drm/radeon/radeon_asic.c
View file @ b68bdc1b
......@@ -40,6 +40,16 @@
/*
* Registers accessors functions.
*/
/**
* radeon_invalid_rreg - dummy reg read function
*
* @rdev: radeon device pointer
* @reg: offset of register
*
* Dummy register read function. Used for register blocks
* that certain asics don't have (all asics).
* Returns the value in the register.
*/
static uint32_t radeon_invalid_rreg(struct radeon_device *rdev, uint32_t reg)
{
DRM_ERROR("Invalid callback to read register 0x%04X\n", reg);
......@@ -47,6 +57,16 @@ static uint32_t radeon_invalid_rreg(struct radeon_device *rdev, uint32_t reg)
return 0;
}
/**
* radeon_invalid_wreg - dummy reg write function
*
* @rdev: radeon device pointer
* @reg: offset of register
* @v: value to write to the register
*
* Dummy register read function. Used for register blocks
* that certain asics don't have (all asics).
*/
static void radeon_invalid_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
{
DRM_ERROR("Invalid callback to write register 0x%04X with 0x%08X\n",
......@@ -54,6 +74,14 @@ static void radeon_invalid_wreg(struct radeon_device *rdev, uint32_t reg, uint32
BUG_ON(1);
}
/**
* radeon_register_accessor_init - sets up the register accessor callbacks
*
* @rdev: radeon device pointer
*
* Sets up the register accessor callbacks for various register
* apertures. Not all asics have all apertures (all asics).
*/
static void radeon_register_accessor_init(struct radeon_device *rdev)
{
rdev->mc_rreg = &radeon_invalid_rreg;
......@@ -102,6 +130,14 @@ static void radeon_register_accessor_init(struct radeon_device *rdev)
/* helper to disable agp */
/**
* radeon_agp_disable - AGP disable helper function
*
* @rdev: radeon device pointer
*
* Removes AGP flags and changes the gart callbacks on AGP
* cards when using the internal gart rather than AGP (all asics).
*/
void radeon_agp_disable(struct radeon_device *rdev)
{
rdev->flags &= ~RADEON_IS_AGP;
......@@ -1608,6 +1644,16 @@ static struct radeon_asic si_asic = {
},
};
/**
* radeon_asic_init - register asic specific callbacks
*
* @rdev: radeon device pointer
*
* Registers the appropriate asic specific callbacks for each
* chip family. Also sets other asics specific info like the number
* of crtcs and the register aperture accessors (all asics).
* Returns 0 for success.
*/
int radeon_asic_init(struct radeon_device *rdev)
{
radeon_register_accessor_init(rdev);
......
drivers/gpu/drm/radeon/radeon_cs.c
View file @ b68bdc1b
......@@ -354,7 +354,7 @@ static int radeon_cs_ib_chunk(struct radeon_device *rdev,
}
radeon_cs_sync_rings(parser);
parser->ib.vm_id = 0;
r = radeon_ib_schedule(rdev, &parser->ib);
r = radeon_ib_schedule(rdev, &parser->ib, NULL);
if (r) {
DRM_ERROR("Failed to schedule IB !\n");
}
......@@ -452,25 +452,24 @@ static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev,
}
radeon_cs_sync_rings(parser);
parser->ib.vm_id = vm->id;
/* ib pool is bind at 0 in virtual address space,
* so gpu_addr is the offset inside the pool bo
*/
parser->ib.gpu_addr = parser->ib.sa_bo->soffset;
if ((rdev->family >= CHIP_TAHITI) &&
(parser->chunk_const_ib_idx != -1)) {
parser->const_ib.vm_id = vm->id;
/* ib pool is bind at 0 in virtual address space to gpu_addr is the
* offset inside the pool bo
/* ib pool is bind at 0 in virtual address space,
* so gpu_addr is the offset inside the pool bo
*/
parser->const_ib.gpu_addr = parser->const_ib.sa_bo->soffset;
r = radeon_ib_schedule(rdev, &parser->const_ib);
if (r)
goto out;
r = radeon_ib_schedule(rdev, &parser->ib, &parser->const_ib);
} else {
r = radeon_ib_schedule(rdev, &parser->ib, NULL);
}
parser->ib.vm_id = vm->id;
/* ib pool is bind at 0 in virtual address space to gpu_addr is the
* offset inside the pool bo
*/
parser->ib.gpu_addr = parser->ib.sa_bo->soffset;
parser->ib.is_const_ib = false;
r = radeon_ib_schedule(rdev, &parser->ib);
out:
if (!r) {
if (vm->fence) {
......
drivers/gpu/drm/radeon/radeon_device.c
View file @ b68bdc1b
......@@ -96,8 +96,12 @@ static const char radeon_family_name[][16] = {
"LAST",
};
/*
* Clear GPU surface registers.
/**
* radeon_surface_init - Clear GPU surface registers.
*
* @rdev: radeon_device pointer
*
* Clear GPU surface registers (r1xx-r5xx).
*/
void radeon_surface_init(struct radeon_device *rdev)
{
......@@ -119,6 +123,13 @@ void radeon_surface_init(struct radeon_device *rdev)
/*
* GPU scratch registers helpers function.
*/
/**
* radeon_scratch_init - Init scratch register driver information.
*
* @rdev: radeon_device pointer
*
* Init CP scratch register driver information (r1xx-r5xx)
*/
void radeon_scratch_init(struct radeon_device *rdev)
{
int i;
......@@ -136,6 +147,15 @@ void radeon_scratch_init(struct radeon_device *rdev)
}
}
/**
* radeon_scratch_get - Allocate a scratch register
*
* @rdev: radeon_device pointer
* @reg: scratch register mmio offset
*
* Allocate a CP scratch register for use by the driver (all asics).
* Returns 0 on success or -EINVAL on failure.
*/
int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
{
int i;
......@@ -150,6 +170,14 @@ int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
return -EINVAL;
}
/**
* radeon_scratch_free - Free a scratch register
*
* @rdev: radeon_device pointer
* @reg: scratch register mmio offset
*
* Free a CP scratch register allocated for use by the driver (all asics)
*/
void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
{
int i;
......@@ -162,6 +190,20 @@ void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
}
}
/*
* radeon_wb_*()
* Writeback is the the method by which the the GPU updates special pages
* in memory with the status of certain GPU events (fences, ring pointers,
* etc.).
*/
/**
* radeon_wb_disable - Disable Writeback
*
* @rdev: radeon_device pointer
*
* Disables Writeback (all asics). Used for suspend.
*/
void radeon_wb_disable(struct radeon_device *rdev)
{
int r;
......@@ -177,6 +219,14 @@ void radeon_wb_disable(struct radeon_device *rdev)
rdev->wb.enabled = false;
}
/**
* radeon_wb_fini - Disable Writeback and free memory
*
* @rdev: radeon_device pointer
*
* Disables Writeback and frees the Writeback memory (all asics).
* Used at driver shutdown.
*/
void radeon_wb_fini(struct radeon_device *rdev)
{
radeon_wb_disable(rdev);
......@@ -187,6 +237,15 @@ void radeon_wb_fini(struct radeon_device *rdev)
}
}
/**
* radeon_wb_init- Init Writeback driver info and allocate memory
*
* @rdev: radeon_device pointer
*
* Disables Writeback and frees the Writeback memory (all asics).
* Used at driver startup.
* Returns 0 on success or an -error on failure.
*/
int radeon_wb_init(struct radeon_device *rdev)
{
int r;
......@@ -355,6 +414,15 @@ void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
/*
* GPU helpers function.
*/
/**
* radeon_card_posted - check if the hw has already been initialized
*
* @rdev: radeon_device pointer
*
* Check if the asic has been initialized (all asics).
* Used at driver startup.
* Returns true if initialized or false if not.
*/
bool radeon_card_posted(struct radeon_device *rdev)
{
uint32_t reg;
......@@ -404,6 +472,14 @@ bool radeon_card_posted(struct radeon_device *rdev)
}
/**
* radeon_update_bandwidth_info - update display bandwidth params
*
* @rdev: radeon_device pointer
*
* Used when sclk/mclk are switched or display modes are set.
* params are used to calculate display watermarks (all asics)
*/
void radeon_update_bandwidth_info(struct radeon_device *rdev)
{
fixed20_12 a;
......@@ -424,6 +500,15 @@ void radeon_update_bandwidth_info(struct radeon_device *rdev)
}
}
/**
* radeon_boot_test_post_card - check and possibly initialize the hw
*
* @rdev: radeon_device pointer
*
* Check if the asic is initialized and if not, attempt to initialize
* it (all asics).
* Returns true if initialized or false if not.
*/
bool radeon_boot_test_post_card(struct radeon_device *rdev)
{
if (radeon_card_posted(rdev))
......@@ -442,6 +527,16 @@ bool radeon_boot_test_post_card(struct radeon_device *rdev)
}
}
/**
* radeon_dummy_page_init - init dummy page used by the driver
*
* @rdev: radeon_device pointer
*
* Allocate the dummy page used by the driver (all asics).
* This dummy page is used by the driver as a filler for gart entries
* when pages are taken out of the GART
* Returns 0 on sucess, -ENOMEM on failure.
*/
int radeon_dummy_page_init(struct radeon_device *rdev)
{
if (rdev->dummy_page.page)
......@@ -460,6 +555,13 @@ int radeon_dummy_page_init(struct radeon_device *rdev)
return 0;
}
/**
* radeon_dummy_page_fini - free dummy page used by the driver
*
* @rdev: radeon_device pointer
*
* Frees the dummy page used by the driver (all asics).
*/
void radeon_dummy_page_fini(struct radeon_device *rdev)
{
if (rdev->dummy_page.page == NULL)
......@@ -472,6 +574,23 @@ void radeon_dummy_page_fini(struct radeon_device *rdev)
/* ATOM accessor methods */
/*
* ATOM is an interpreted byte code stored in tables in the vbios. The
* driver registers callbacks to access registers and the interpreter
* in the driver parses the tables and executes then to program specific
* actions (set display modes, asic init, etc.). See radeon_atombios.c,
* atombios.h, and atom.c
*/
/**
* cail_pll_read - read PLL register
*
* @info: atom card_info pointer
* @reg: PLL register offset
*
* Provides a PLL register accessor for the atom interpreter (r4xx+).
* Returns the value of the PLL register.
*/
static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
{
struct radeon_device *rdev = info->dev->dev_private;
......@@ -481,6 +600,15 @@ static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
return r;
}
/**
* cail_pll_write - write PLL register
*
* @info: atom card_info pointer
* @reg: PLL register offset
* @val: value to write to the pll register
*
* Provides a PLL register accessor for the atom interpreter (r4xx+).
*/
static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
{
struct radeon_device *rdev = info->dev->dev_private;
......@@ -488,6 +616,15 @@ static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
rdev->pll_wreg(rdev, reg, val);
}
/**
* cail_mc_read - read MC (Memory Controller) register
*
* @info: atom card_info pointer
* @reg: MC register offset
*
* Provides an MC register accessor for the atom interpreter (r4xx+).
* Returns the value of the MC register.
*/
static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
{
struct radeon_device *rdev = info->dev->dev_private;
......@@ -497,6 +634,15 @@ static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
return r;
}
/**
* cail_mc_write - write MC (Memory Controller) register
*
* @info: atom card_info pointer
* @reg: MC register offset
* @val: value to write to the pll register
*
* Provides a MC register accessor for the atom interpreter (r4xx+).
*/
static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
{
struct radeon_device *rdev = info->dev->dev_private;
......@@ -504,6 +650,15 @@ static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
rdev->mc_wreg(rdev, reg, val);
}
/**
* cail_reg_write - write MMIO register
*
* @info: atom card_info pointer
* @reg: MMIO register offset
* @val: value to write to the pll register
*
* Provides a MMIO register accessor for the atom interpreter (r4xx+).
*/
static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
{
struct radeon_device *rdev = info->dev->dev_private;
......@@ -511,6 +666,15 @@ static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
WREG32(reg*4, val);
}
/**
* cail_reg_read - read MMIO register
*
* @info: atom card_info pointer
* @reg: MMIO register offset
*
* Provides an MMIO register accessor for the atom interpreter (r4xx+).
* Returns the value of the MMIO register.
*/
static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
{
struct radeon_device *rdev = info->dev->dev_private;
......@@ -520,6 +684,15 @@ static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
return r;
}
/**
* cail_ioreg_write - write IO register
*
* @info: atom card_info pointer
* @reg: IO register offset
* @val: value to write to the pll register
*
* Provides a IO register accessor for the atom interpreter (r4xx+).
*/
static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
{
struct radeon_device *rdev = info->dev->dev_private;
......@@ -527,6 +700,15 @@ static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
WREG32_IO(reg*4, val);
}
/**
* cail_ioreg_read - read IO register
*
* @info: atom card_info pointer
* @reg: IO register offset
*
* Provides an IO register accessor for the atom interpreter (r4xx+).
* Returns the value of the IO register.
*/
static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
{
struct radeon_device *rdev = info->dev->dev_private;
......@@ -536,6 +718,16 @@ static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
return r;
}
/**
* radeon_atombios_init - init the driver info and callbacks for atombios
*
* @rdev: radeon_device pointer
*
* Initializes the driver info and register access callbacks for the
* ATOM interpreter (r4xx+).
* Returns 0 on sucess, -ENOMEM on failure.
* Called at driver startup.
*/
int radeon_atombios_init(struct radeon_device *rdev)
{
struct card_info *atom_card_info =
......@@ -569,6 +761,15 @@ int radeon_atombios_init(struct radeon_device *rdev)
return 0;
}
/**
* radeon_atombios_fini - free the driver info and callbacks for atombios
*
* @rdev: radeon_device pointer
*
* Frees the driver info and register access callbacks for the ATOM
* interpreter (r4xx+).
* Called at driver shutdown.
*/
void radeon_atombios_fini(struct radeon_device *rdev)
{
if (rdev->mode_info.atom_context) {
......@@ -578,17 +779,50 @@ void radeon_atombios_fini(struct radeon_device *rdev)
kfree(rdev->mode_info.atom_card_info);
}
/* COMBIOS */
/*
* COMBIOS is the bios format prior to ATOM. It provides
* command tables similar to ATOM, but doesn't have a unified
* parser. See radeon_combios.c
*/
/**
* radeon_combios_init - init the driver info for combios
*
* @rdev: radeon_device pointer
*
* Initializes the driver info for combios (r1xx-r3xx).
* Returns 0 on sucess.
* Called at driver startup.
*/
int radeon_combios_init(struct radeon_device *rdev)
{
radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
return 0;
}
/**
* radeon_combios_fini - free the driver info for combios
*
* @rdev: radeon_device pointer
*
* Frees the driver info for combios (r1xx-r3xx).
* Called at driver shutdown.
*/
void radeon_combios_fini(struct radeon_device *rdev)
{
}
/* if we get transitioned to only one device, tak VGA back */
/* if we get transitioned to only one device, take VGA back */
/**
* radeon_vga_set_decode - enable/disable vga decode
*
* @cookie: radeon_device pointer
* @state: enable/disable vga decode
*
* Enable/disable vga decode (all asics).
* Returns VGA resource flags.
*/
static unsigned int radeon_vga_set_decode(void *cookie, bool state)
{
struct radeon_device *rdev = cookie;
......@@ -600,6 +834,14 @@ static unsigned int radeon_vga_set_decode(void *cookie, bool state)
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
}
/**
* radeon_check_arguments - validate module params
*
* @rdev: radeon_device pointer
*
* Validates certain module parameters and updates
* the associated values used by the driver (all asics).
*/
void radeon_check_arguments(struct radeon_device *rdev)
{
/* vramlimit must be a power of two */
......@@ -666,6 +908,15 @@ void radeon_check_arguments(struct radeon_device *rdev)
}
}
/**
* radeon_switcheroo_set_state - set switcheroo state
*
* @pdev: pci dev pointer
* @state: vga switcheroo state
*
* Callback for the switcheroo driver. Suspends or resumes the
* the asics before or after it is powered up using ACPI methods.
*/
static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
{
struct drm_device *dev = pci_get_drvdata(pdev);
......@@ -686,6 +937,15 @@ static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switchero
}
}
/**
* radeon_switcheroo_can_switch - see if switcheroo state can change
*
* @pdev: pci dev pointer
*
* Callback for the switcheroo driver. Check of the switcheroo
* state can be changed.
* Returns true if the state can be changed, false if not.
*/
static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
......@@ -703,6 +963,18 @@ static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = {
.can_switch = radeon_switcheroo_can_switch,
};
/**
* radeon_device_init - initialize the driver
*
* @rdev: radeon_device pointer
* @pdev: drm dev pointer
* @pdev: pci dev pointer
* @flags: driver flags
*
* Initializes the driver info and hw (all asics).
* Returns 0 for success or an error on failure.
* Called at driver startup.
*/
int radeon_device_init(struct radeon_device *rdev,
struct drm_device *ddev,
struct pci_dev *pdev,
......@@ -721,6 +993,10 @@ int radeon_device_init(struct radeon_device *rdev,
rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
rdev->accel_working = false;
/* set up ring ids */
for (i = 0; i < RADEON_NUM_RINGS; i++) {
rdev->ring[i].idx = i;
}
DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X).\n",
radeon_family_name[rdev->family], pdev->vendor, pdev->device,
......@@ -851,6 +1127,14 @@ int radeon_device_init(struct radeon_device *rdev,
static void radeon_debugfs_remove_files(struct radeon_device *rdev);
/**
* radeon_device_fini - tear down the driver
*
* @rdev: radeon_device pointer
*
* Tear down the driver info (all asics).
* Called at driver shutdown.
*/
void radeon_device_fini(struct radeon_device *rdev)
{
DRM_INFO("radeon: finishing device.\n");
......@@ -872,6 +1156,16 @@ void radeon_device_fini(struct radeon_device *rdev)
/*
* Suspend & resume.
*/
/**
* radeon_suspend_kms - initiate device suspend
*
* @pdev: drm dev pointer
* @state: suspend state
*
* Puts the hw in the suspend state (all asics).
* Returns 0 for success or an error on failure.
* Called at driver suspend.
*/
int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
{
struct radeon_device *rdev;
......@@ -946,6 +1240,15 @@ int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
return 0;
}
/**
* radeon_resume_kms - initiate device resume
*
* @pdev: drm dev pointer
*
* Bring the hw back to operating state (all asics).
* Returns 0 for success or an error on failure.
* Called at driver resume.
*/
int radeon_resume_kms(struct drm_device *dev)
{
struct drm_connector *connector;
......@@ -994,6 +1297,14 @@ int radeon_resume_kms(struct drm_device *dev)
return 0;
}
/**
* radeon_gpu_reset - reset the asic
*
* @rdev: radeon device pointer
*
* Attempt the reset the GPU if it has hung (all asics).
* Returns 0 for success or an error on failure.
*/
int radeon_gpu_reset(struct radeon_device *rdev)
{
unsigned ring_sizes[RADEON_NUM_RINGS];
......
drivers/gpu/drm/radeon/radeon_fence.c
View file @ b68bdc1b
......@@ -40,6 +40,26 @@
#include "radeon.h"
#include "radeon_trace.h"
/*
* Fences
* Fences mark an event in the GPUs pipeline and are used
* for GPU/CPU synchronization. When the fence is written,
* it is expected that all buffers associated with that fence
* are no longer in use by the associated ring on the GPU and
* that the the relevant GPU caches have been flushed. Whether
* we use a scratch register or memory location depends on the asic
* and whether writeback is enabled.
*/
/**
* radeon_fence_write - write a fence value
*
* @rdev: radeon_device pointer
* @seq: sequence number to write
* @ring: ring index the fence is associated with
*
* Writes a fence value to memory or a scratch register (all asics).
*/
static void radeon_fence_write(struct radeon_device *rdev, u32 seq, int ring)
{
struct radeon_fence_driver *drv = &rdev->fence_drv[ring];
......@@ -50,6 +70,15 @@ static void radeon_fence_write(struct radeon_device *rdev, u32 seq, int ring)
}
}
/**
* radeon_fence_read - read a fence value
*
* @rdev: radeon_device pointer
* @ring: ring index the fence is associated with
*
* Reads a fence value from memory or a scratch register (all asics).
* Returns the value of the fence read from memory or register.
*/
static u32 radeon_fence_read(struct radeon_device *rdev, int ring)
{
struct radeon_fence_driver *drv = &rdev->fence_drv[ring];
......@@ -63,6 +92,16 @@ static u32 radeon_fence_read(struct radeon_device *rdev, int ring)
return seq;
}
/**
* radeon_fence_emit - emit a fence on the requested ring
*
* @rdev: radeon_device pointer
* @fence: radeon fence object
* @ring: ring index the fence is associated with
*
* Emits a fence command on the requested ring (all asics).
* Returns 0 on success, -ENOMEM on failure.
*/
int radeon_fence_emit(struct radeon_device *rdev,
struct radeon_fence **fence,
int ring)
......@@ -81,6 +120,15 @@ int radeon_fence_emit(struct radeon_device *rdev,
return 0;
}
/**
* radeon_fence_process - process a fence
*
* @rdev: radeon_device pointer
* @ring: ring index the fence is associated with
*
* Checks the current fence value and wakes the fence queue
* if the sequence number has increased (all asics).
*/
void radeon_fence_process(struct radeon_device *rdev, int ring)
{
uint64_t seq, last_seq;
......@@ -141,6 +189,13 @@ void radeon_fence_process(struct radeon_device *rdev, int ring)
}
}
/**
* radeon_fence_destroy - destroy a fence
*
* @kref: fence kref
*
* Frees the fence object (all asics).
*/
static void radeon_fence_destroy(struct kref *kref)
{
struct radeon_fence *fence;
......@@ -149,6 +204,20 @@ static void radeon_fence_destroy(struct kref *kref)
kfree(fence);
}
/**
* radeon_fence_seq_signaled - check if a fence sequeuce number has signaled
*
* @rdev: radeon device pointer
* @seq: sequence number
* @ring: ring index the fence is associated with
*
* Check if the last singled fence sequnce number is >= the requested
* sequence number (all asics).
* Returns true if the fence has signaled (current fence value
* is >= requested value) or false if it has not (current fence
* value is < the requested value. Helper function for
* radeon_fence_signaled().
*/
static bool radeon_fence_seq_signaled(struct radeon_device *rdev,
u64 seq, unsigned ring)
{
......@@ -163,6 +232,14 @@ static bool radeon_fence_seq_signaled(struct radeon_device *rdev,
return false;
}
/**
* radeon_fence_signaled - check if a fence has signaled
*
* @fence: radeon fence object
*
* Check if the requested fence has signaled (all asics).
* Returns true if the fence has signaled or false if it has not.
*/
bool radeon_fence_signaled(struct radeon_fence *fence)
{
if (!fence) {
......@@ -178,6 +255,24 @@ bool radeon_fence_signaled(struct radeon_fence *fence)
return false;
}
/**
* radeon_fence_wait_seq - wait for a specific sequence number
*
* @rdev: radeon device pointer
* @target_seq: sequence number we want to wait for
* @ring: ring index the fence is associated with
* @intr: use interruptable sleep
* @lock_ring: whether the ring should be locked or not
*
* Wait for the requested sequence number to be written (all asics).
* @intr selects whether to use interruptable (true) or non-interruptable
* (false) sleep when waiting for the sequence number. Helper function
* for radeon_fence_wait(), et al.
* Returns 0 if the sequence number has passed, error for all other cases.
* -EDEADLK is returned when a GPU lockup has been detected and the ring is
* marked as not ready so no further jobs get scheduled until a successful
* reset.
*/
static int radeon_fence_wait_seq(struct radeon_device *rdev, u64 target_seq,
unsigned ring, bool intr, bool lock_ring)
{
......@@ -273,6 +368,17 @@ static int radeon_fence_wait_seq(struct radeon_device *rdev, u64 target_seq,
return 0;
}
/**
* radeon_fence_wait - wait for a fence to signal
*
* @fence: radeon fence object
* @intr: use interruptable sleep
*
* Wait for the requested fence to signal (all asics).
* @intr selects whether to use interruptable (true) or non-interruptable
* (false) sleep when waiting for the fence.
* Returns 0 if the fence has passed, error for all other cases.
*/
int radeon_fence_wait(struct radeon_fence *fence, bool intr)
{
int r;
......@@ -303,6 +409,20 @@ bool radeon_fence_any_seq_signaled(struct radeon_device *rdev, u64 *seq)
return false;
}
/**
* radeon_fence_wait_any_seq - wait for a sequence number on any ring
*
* @rdev: radeon device pointer
* @target_seq: sequence number(s) we want to wait for
* @intr: use interruptable sleep
*
* Wait for the requested sequence number(s) to be written by any ring
* (all asics). Sequnce number array is indexed by ring id.
* @intr selects whether to use interruptable (true) or non-interruptable
* (false) sleep when waiting for the sequence number. Helper function
* for radeon_fence_wait_any(), et al.
* Returns 0 if the sequence number has passed, error for all other cases.
*/
static int radeon_fence_wait_any_seq(struct radeon_device *rdev,
u64 *target_seq, bool intr)
{
......@@ -331,7 +451,7 @@ static int radeon_fence_wait_any_seq(struct radeon_device *rdev,
/* nothing to wait for ? */
if (ring == RADEON_NUM_RINGS) {
return 0;
return -ENOENT;
}
while (!radeon_fence_any_seq_signaled(rdev, target_seq)) {
......@@ -412,6 +532,19 @@ static int radeon_fence_wait_any_seq(struct radeon_device *rdev,
return 0;
}
/**
* radeon_fence_wait_any - wait for a fence to signal on any ring
*
* @rdev: radeon device pointer
* @fences: radeon fence object(s)
* @intr: use interruptable sleep
*
* Wait for any requested fence to signal (all asics). Fence
* array is indexed by ring id. @intr selects whether to use
* interruptable (true) or non-interruptable (false) sleep when
* waiting for the fences. Used by the suballocator.
* Returns 0 if any fence has passed, error for all other cases.
*/
int radeon_fence_wait_any(struct radeon_device *rdev,
struct radeon_fence **fences,
bool intr)
......@@ -442,7 +575,16 @@ int radeon_fence_wait_any(struct radeon_device *rdev,
return 0;
}
/* caller must hold ring lock */
/**
* radeon_fence_wait_next_locked - wait for the next fence to signal
*
* @rdev: radeon device pointer
* @ring: ring index the fence is associated with
*
* Wait for the next fence on the requested ring to signal (all asics).
* Returns 0 if the next fence has passed, error for all other cases.
* Caller must hold ring lock.
*/
int radeon_fence_wait_next_locked(struct radeon_device *rdev, int ring)
{
uint64_t seq;
......@@ -456,7 +598,16 @@ int radeon_fence_wait_next_locked(struct radeon_device *rdev, int ring)
return radeon_fence_wait_seq(rdev, seq, ring, false, false);
}
/* caller must hold ring lock */
/**
* radeon_fence_wait_empty_locked - wait for all fences to signal
*
* @rdev: radeon device pointer
* @ring: ring index the fence is associated with
*
* Wait for all fences on the requested ring to signal (all asics).
* Returns 0 if the fences have passed, error for all other cases.
* Caller must hold ring lock.
*/
void radeon_fence_wait_empty_locked(struct radeon_device *rdev, int ring)
{
uint64_t seq = rdev->fence_drv[ring].sync_seq[ring];
......@@ -479,12 +630,27 @@ void radeon_fence_wait_empty_locked(struct radeon_device *rdev, int ring)
}
}
/**
* radeon_fence_ref - take a ref on a fence
*
* @fence: radeon fence object
*
* Take a reference on a fence (all asics).
* Returns the fence.
*/
struct radeon_fence *radeon_fence_ref(struct radeon_fence *fence)
{
kref_get(&fence->kref);
return fence;
}
/**
* radeon_fence_unref - remove a ref on a fence
*
* @fence: radeon fence object
*
* Remove a reference on a fence (all asics).
*/
void radeon_fence_unref(struct radeon_fence **fence)
{
struct radeon_fence *tmp = *fence;
......@@ -495,6 +661,16 @@ void radeon_fence_unref(struct radeon_fence **fence)
}
}
/**
* radeon_fence_count_emitted - get the count of emitted fences
*
* @rdev: radeon device pointer
* @ring: ring index the fence is associated with
*
* Get the number of fences emitted on the requested ring (all asics).
* Returns the number of emitted fences on the ring. Used by the
* dynpm code to ring track activity.
*/
unsigned radeon_fence_count_emitted(struct radeon_device *rdev, int ring)
{
uint64_t emitted;
......@@ -512,6 +688,17 @@ unsigned radeon_fence_count_emitted(struct radeon_device *rdev, int ring)
return (unsigned)emitted;
}
/**
* radeon_fence_need_sync - do we need a semaphore
*
* @fence: radeon fence object
* @dst_ring: which ring to check against
*
* Check if the fence needs to be synced against another ring
* (all asics). If so, we need to emit a semaphore.
* Returns true if we need to sync with another ring, false if
* not.
*/
bool radeon_fence_need_sync(struct radeon_fence *fence, int dst_ring)
{
struct radeon_fence_driver *fdrv;
......@@ -533,6 +720,15 @@ bool radeon_fence_need_sync(struct radeon_fence *fence, int dst_ring)
return true;
}
/**
* radeon_fence_note_sync - record the sync point
*
* @fence: radeon fence object
* @dst_ring: which ring to check against
*
* Note the sequence number at which point the fence will
* be synced with the requested ring (all asics).
*/
void radeon_fence_note_sync(struct radeon_fence *fence, int dst_ring)
{
struct radeon_fence_driver *dst, *src;
......@@ -557,6 +753,18 @@ void radeon_fence_note_sync(struct radeon_fence *fence, int dst_ring)
}
}
/**
* radeon_fence_driver_start_ring - make the fence driver
* ready for use on the requested ring.
*
* @rdev: radeon device pointer
* @ring: ring index to start the fence driver on
*
* Make the fence driver ready for processing (all asics).
* Not all asics have all rings, so each asic will only
* start the fence driver on the rings it has.
* Returns 0 for success, errors for failure.
*/
int radeon_fence_driver_start_ring(struct radeon_device *rdev, int ring)
{
uint64_t index;
......@@ -585,6 +793,16 @@ int radeon_fence_driver_start_ring(struct radeon_device *rdev, int ring)
return 0;
}
/**
* radeon_fence_driver_init_ring - init the fence driver
* for the requested ring.
*
* @rdev: radeon device pointer
* @ring: ring index to start the fence driver on
*
* Init the fence driver for the requested ring (all asics).
* Helper function for radeon_fence_driver_init().
*/
static void radeon_fence_driver_init_ring(struct radeon_device *rdev, int ring)
{
int i;
......@@ -599,6 +817,18 @@ static void radeon_fence_driver_init_ring(struct radeon_device *rdev, int ring)
rdev->fence_drv[ring].initialized = false;
}
/**
* radeon_fence_driver_init - init the fence driver
* for all possible rings.
*
* @rdev: radeon device pointer
*
* Init the fence driver for all possible rings (all asics).
* Not all asics have all rings, so each asic will only
* start the fence driver on the rings it has using
* radeon_fence_driver_start_ring().
* Returns 0 for success.
*/
int radeon_fence_driver_init(struct radeon_device *rdev)
{
int ring;
......@@ -613,6 +843,14 @@ int radeon_fence_driver_init(struct radeon_device *rdev)
return 0;
}
/**
* radeon_fence_driver_fini - tear down the fence driver
* for all possible rings.
*
* @rdev: radeon device pointer
*
* Tear down the fence driver for all possible rings (all asics).
*/
void radeon_fence_driver_fini(struct radeon_device *rdev)
{
int ring;
......
drivers/gpu/drm/radeon/radeon_gart.c
View file @ b68bdc1b
......@@ -30,9 +30,39 @@
#include "radeon.h"
#include "radeon_reg.h"
/*
* GART
* The GART (Graphics Aperture Remapping Table) is an aperture
* in the GPU's address space. System pages can be mapped into
* the aperture and look like contiguous pages from the GPU's
* perspective. A page table maps the pages in the aperture
* to the actual backing pages in system memory.
*
* Radeon GPUs support both an internal GART, as described above,
* and AGP. AGP works similarly, but the GART table is configured
* and maintained by the northbridge rather than the driver.
* Radeon hw has a separate AGP aperture that is programmed to
* point to the AGP aperture provided by the northbridge and the
* requests are passed through to the northbridge aperture.
* Both AGP and internal GART can be used at the same time, however
* that is not currently supported by the driver.
*
* This file handles the common internal GART management.
*/
/*
* Common GART table functions.
*/
/**
* radeon_gart_table_ram_alloc - allocate system ram for gart page table
*
* @rdev: radeon_device pointer
*
* Allocate system memory for GART page table
* (r1xx-r3xx, non-pcie r4xx, rs400). These asics require the
* gart table to be in system memory.
* Returns 0 for success, -ENOMEM for failure.
*/
int radeon_gart_table_ram_alloc(struct radeon_device *rdev)
{
void *ptr;
......@@ -54,6 +84,15 @@ int radeon_gart_table_ram_alloc(struct radeon_device *rdev)
return 0;
}
/**
* radeon_gart_table_ram_free - free system ram for gart page table
*
* @rdev: radeon_device pointer
*
* Free system memory for GART page table
* (r1xx-r3xx, non-pcie r4xx, rs400). These asics require the
* gart table to be in system memory.
*/
void radeon_gart_table_ram_free(struct radeon_device *rdev)
{
if (rdev->gart.ptr == NULL) {
......@@ -73,6 +112,16 @@ void radeon_gart_table_ram_free(struct radeon_device *rdev)
rdev->gart.table_addr = 0;
}
/**
* radeon_gart_table_vram_alloc - allocate vram for gart page table
*
* @rdev: radeon_device pointer
*
* Allocate video memory for GART page table
* (pcie r4xx, r5xx+). These asics require the
* gart table to be in video memory.
* Returns 0 for success, error for failure.
*/
int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
{
int r;
......@@ -88,6 +137,16 @@ int radeon_gart_table_vram_alloc(struct radeon_device *rdev)
return 0;
}
/**
* radeon_gart_table_vram_pin - pin gart page table in vram
*
* @rdev: radeon_device pointer
*
* Pin the GART page table in vram so it will not be moved
* by the memory manager (pcie r4xx, r5xx+). These asics require the
* gart table to be in video memory.
* Returns 0 for success, error for failure.
*/
int radeon_gart_table_vram_pin(struct radeon_device *rdev)
{
uint64_t gpu_addr;
......@@ -110,6 +169,14 @@ int radeon_gart_table_vram_pin(struct radeon_device *rdev)
return r;
}
/**
* radeon_gart_table_vram_unpin - unpin gart page table in vram
*
* @rdev: radeon_device pointer
*
* Unpin the GART page table in vram (pcie r4xx, r5xx+).
* These asics require the gart table to be in video memory.
*/
void radeon_gart_table_vram_unpin(struct radeon_device *rdev)
{
int r;
......@@ -126,6 +193,15 @@ void radeon_gart_table_vram_unpin(struct radeon_device *rdev)
}
}
/**
* radeon_gart_table_vram_free - free gart page table vram
*
* @rdev: radeon_device pointer
*
* Free the video memory used for the GART page table
* (pcie r4xx, r5xx+). These asics require the gart table to
* be in video memory.
*/
void radeon_gart_table_vram_free(struct radeon_device *rdev)
{
if (rdev->gart.robj == NULL) {
......@@ -135,12 +211,19 @@ void radeon_gart_table_vram_free(struct radeon_device *rdev)
radeon_bo_unref(&rdev->gart.robj);
}
/*
* Common gart functions.
*/
/**
* radeon_gart_unbind - unbind pages from the gart page table
*
* @rdev: radeon_device pointer
* @offset: offset into the GPU's gart aperture
* @pages: number of pages to unbind
*
* Unbinds the requested pages from the gart page table and
* replaces them with the dummy page (all asics).
*/
void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
int pages)
{
......@@ -172,6 +255,19 @@ void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
radeon_gart_tlb_flush(rdev);
}
/**
* radeon_gart_bind - bind pages into the gart page table
*
* @rdev: radeon_device pointer
* @offset: offset into the GPU's gart aperture
* @pages: number of pages to bind
* @pagelist: pages to bind
* @dma_addr: DMA addresses of pages
*
* Binds the requested pages to the gart page table
* (all asics).
* Returns 0 for success, -EINVAL for failure.
*/
int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
int pages, struct page **pagelist, dma_addr_t *dma_addr)
{
......@@ -203,6 +299,14 @@ int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
return 0;
}
/**
* radeon_gart_restore - bind all pages in the gart page table
*
* @rdev: radeon_device pointer
*
* Binds all pages in the gart page table (all asics).
* Used to rebuild the gart table on device startup or resume.
*/
void radeon_gart_restore(struct radeon_device *rdev)
{
int i, j, t;
......@@ -222,6 +326,14 @@ void radeon_gart_restore(struct radeon_device *rdev)
radeon_gart_tlb_flush(rdev);
}
/**
* radeon_gart_init - init the driver info for managing the gart
*
* @rdev: radeon_device pointer
*
* Allocate the dummy page and init the gart driver info (all asics).
* Returns 0 for success, error for failure.
*/
int radeon_gart_init(struct radeon_device *rdev)
{
int r, i;
......@@ -262,6 +374,13 @@ int radeon_gart_init(struct radeon_device *rdev)
return 0;
}
/**
* radeon_gart_fini - tear down the driver info for managing the gart
*
* @rdev: radeon_device pointer
*
* Tear down the gart driver info and free the dummy page (all asics).
*/
void radeon_gart_fini(struct radeon_device *rdev)
{
if (rdev->gart.pages && rdev->gart.pages_addr && rdev->gart.ready) {
......@@ -277,12 +396,40 @@ void radeon_gart_fini(struct radeon_device *rdev)
radeon_dummy_page_fini(rdev);
}
/*
* GPUVM
* GPUVM is similar to the legacy gart on older asics, however
* rather than there being a single global gart table
* for the entire GPU, there are multiple VM page tables active
* at any given time. The VM page tables can contain a mix
* vram pages and system memory pages and system memory pages
* can be mapped as snooped (cached system pages) or unsnooped
* (uncached system pages).
* Each VM has an ID associated with it and there is a page table
* associated with each VMID. When execting a command buffer,
* the kernel tells the the ring what VMID to use for that command
* buffer. VMIDs are allocated dynamically as commands are submitted.
* The userspace drivers maintain their own address space and the kernel
* sets up their pages tables accordingly when they submit their
* command buffers and a VMID is assigned.
* Cayman/Trinity support up to 8 active VMs at any given time;
* SI supports 16.
*/
/*
* vm helpers
*
* TODO bind a default page at vm initialization for default address
*/
/**
* radeon_vm_manager_init - init the vm manager
*
* @rdev: radeon_device pointer
*
* Init the vm manager (cayman+).
* Returns 0 for success, error for failure.
*/
int radeon_vm_manager_init(struct radeon_device *rdev)
{
struct radeon_vm *vm;
......@@ -337,6 +484,16 @@ int radeon_vm_manager_init(struct radeon_device *rdev)
}
/* global mutex must be lock */
/**
* radeon_vm_unbind_locked - unbind a specific vm
*
* @rdev: radeon_device pointer
* @vm: vm to unbind
*
* Unbind the requested vm (cayman+).
* Wait for use of the VM to finish, then unbind the page table,
* and free the page table memory.
*/
static void radeon_vm_unbind_locked(struct radeon_device *rdev,
struct radeon_vm *vm)
{
......@@ -376,6 +533,13 @@ static void radeon_vm_unbind_locked(struct radeon_device *rdev,
}
}
/**
* radeon_vm_manager_fini - tear down the vm manager
*
* @rdev: radeon_device pointer
*
* Tear down the VM manager (cayman+).
*/
void radeon_vm_manager_fini(struct radeon_device *rdev)
{
struct radeon_vm *vm, *tmp;
......@@ -397,6 +561,14 @@ void radeon_vm_manager_fini(struct radeon_device *rdev)
}
/* global mutex must be locked */
/**
* radeon_vm_unbind - locked version of unbind
*
* @rdev: radeon_device pointer
* @vm: vm to unbind
*
* Locked version that wraps radeon_vm_unbind_locked (cayman+).
*/
void radeon_vm_unbind(struct radeon_device *rdev, struct radeon_vm *vm)
{
mutex_lock(&vm->mutex);
......@@ -405,6 +577,18 @@ void radeon_vm_unbind(struct radeon_device *rdev, struct radeon_vm *vm)
}
/* global and local mutex must be locked */
/**
* radeon_vm_bind - bind a page table to a VMID
*
* @rdev: radeon_device pointer
* @vm: vm to bind
*
* Bind the requested vm (cayman+).
* Suballocate memory for the page table, allocate a VMID
* and bind the page table to it, and finally start to populate
* the page table.
* Returns 0 for success, error for failure.
*/
int radeon_vm_bind(struct radeon_device *rdev, struct radeon_vm *vm)
{
struct radeon_vm *vm_evict;
......@@ -467,6 +651,20 @@ int radeon_vm_bind(struct radeon_device *rdev, struct radeon_vm *vm)
}
/* object have to be reserved */
/**
* radeon_vm_bo_add - add a bo to a specific vm
*
* @rdev: radeon_device pointer
* @vm: requested vm
* @bo: radeon buffer object
* @offset: requested offset of the buffer in the VM address space
* @flags: attributes of pages (read/write/valid/etc.)
*
* Add @bo into the requested vm (cayman+).
* Add @bo to the list of bos associated with the vm and validate
* the offset requested within the vm address space.
* Returns 0 for success, error for failure.
*/
int radeon_vm_bo_add(struct radeon_device *rdev,
struct radeon_vm *vm,
struct radeon_bo *bo,
......@@ -544,6 +742,17 @@ int radeon_vm_bo_add(struct radeon_device *rdev,
return 0;
}
/**
* radeon_vm_get_addr - get the physical address of the page
*
* @rdev: radeon_device pointer
* @mem: ttm mem
* @pfn: pfn
*
* Look up the physical address of the page that the pte resolves
* to (cayman+).
* Returns the physical address of the page.
*/
static u64 radeon_vm_get_addr(struct radeon_device *rdev,
struct ttm_mem_reg *mem,
unsigned pfn)
......@@ -573,6 +782,17 @@ static u64 radeon_vm_get_addr(struct radeon_device *rdev,
}
/* object have to be reserved & global and local mutex must be locked */
/**
* radeon_vm_bo_update_pte - map a bo into the vm page table
*
* @rdev: radeon_device pointer
* @vm: requested vm
* @bo: radeon buffer object
* @mem: ttm mem
*
* Fill in the page table entries for @bo (cayman+).
* Returns 0 for success, -EINVAL for failure.
*/
int radeon_vm_bo_update_pte(struct radeon_device *rdev,
struct radeon_vm *vm,
struct radeon_bo *bo,
......@@ -621,6 +841,18 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev,
}
/* object have to be reserved */
/**
* radeon_vm_bo_rmv - remove a bo to a specific vm
*
* @rdev: radeon_device pointer
* @vm: requested vm
* @bo: radeon buffer object
*
* Remove @bo from the requested vm (cayman+).
* Remove @bo from the list of bos associated with the vm and
* remove the ptes for @bo in the page table.
* Returns 0 for success.
*/
int radeon_vm_bo_rmv(struct radeon_device *rdev,
struct radeon_vm *vm,
struct radeon_bo *bo)
......@@ -643,6 +875,15 @@ int radeon_vm_bo_rmv(struct radeon_device *rdev,
return 0;
}
/**
* radeon_vm_bo_invalidate - mark the bo as invalid
*
* @rdev: radeon_device pointer
* @vm: requested vm
* @bo: radeon buffer object
*
* Mark @bo as invalid (cayman+).
*/
void radeon_vm_bo_invalidate(struct radeon_device *rdev,
struct radeon_bo *bo)
{
......@@ -654,6 +895,17 @@ void radeon_vm_bo_invalidate(struct radeon_device *rdev,
}
}
/**
* radeon_vm_init - initialize a vm instance
*
* @rdev: radeon_device pointer
* @vm: requested vm
*
* Init @vm (cayman+).
* Map the IB pool and any other shared objects into the VM
* by default as it's used by all VMs.
* Returns 0 for success, error for failure.
*/
int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm)
{
int r;
......@@ -672,6 +924,15 @@ int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm)
return r;
}
/**
* radeon_vm_init - tear down a vm instance
*
* @rdev: radeon_device pointer
* @vm: requested vm
*
* Tear down @vm (cayman+).
* Unbind the VM and remove all bos from the vm bo list
*/
void radeon_vm_fini(struct radeon_device *rdev, struct radeon_vm *vm)
{
struct radeon_bo_va *bo_va, *tmp;
......
drivers/gpu/drm/radeon/radeon_irq_kms.c
View file @ b68bdc1b
......@@ -34,6 +34,15 @@
#define RADEON_WAIT_IDLE_TIMEOUT 200
/**
* radeon_driver_irq_handler_kms - irq handler for KMS
*
* @DRM_IRQ_ARGS: args
*
* This is the irq handler for the radeon KMS driver (all asics).
* radeon_irq_process is a macro that points to the per-asic
* irq handler callback.
*/
irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
{
struct drm_device *dev = (struct drm_device *) arg;
......@@ -45,6 +54,17 @@ irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
/*
* Handle hotplug events outside the interrupt handler proper.
*/
/**
* radeon_hotplug_work_func - display hotplug work handler
*
* @work: work struct
*
* This is the hot plug event work handler (all asics).
* The work gets scheduled from the irq handler if there
* was a hot plug interrupt. It walks the connector table
* and calls the hotplug handler for each one, then sends
* a drm hotplug event to alert userspace.
*/
static void radeon_hotplug_work_func(struct work_struct *work)
{
struct radeon_device *rdev = container_of(work, struct radeon_device,
......@@ -61,6 +81,14 @@ static void radeon_hotplug_work_func(struct work_struct *work)
drm_helper_hpd_irq_event(dev);
}
/**
* radeon_driver_irq_preinstall_kms - drm irq preinstall callback
*
* @dev: drm dev pointer
*
* Gets the hw ready to enable irqs (all asics).
* This function disables all interrupt sources on the GPU.
*/
void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
......@@ -85,12 +113,27 @@ void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
radeon_irq_process(rdev);
}
/**
* radeon_driver_irq_postinstall_kms - drm irq preinstall callback
*
* @dev: drm dev pointer
*
* Handles stuff to be done after enabling irqs (all asics).
* Returns 0 on success.
*/
int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
{
dev->max_vblank_count = 0x001fffff;
return 0;
}
/**
* radeon_driver_irq_uninstall_kms - drm irq uninstall callback
*
* @dev: drm dev pointer
*
* This function disables all interrupt sources on the GPU (all asics).
*/
void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
......@@ -116,6 +159,16 @@ void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
}
/**
* radeon_msi_ok - asic specific msi checks
*
* @rdev: radeon device pointer
*
* Handles asic specific MSI checks to determine if
* MSIs should be enabled on a particular chip (all asics).
* Returns true if MSIs should be enabled, false if MSIs
* should not be enabled.
*/
static bool radeon_msi_ok(struct radeon_device *rdev)
{
/* RV370/RV380 was first asic with MSI support */
......@@ -168,6 +221,14 @@ static bool radeon_msi_ok(struct radeon_device *rdev)
return true;
}
/**
* radeon_irq_kms_init - init driver interrupt info
*
* @rdev: radeon device pointer
*
* Sets up the work irq handlers, vblank init, MSIs, etc. (all asics).
* Returns 0 for success, error for failure.
*/
int radeon_irq_kms_init(struct radeon_device *rdev)
{
int r = 0;
......@@ -200,6 +261,13 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
return 0;
}
/**
* radeon_irq_kms_fini - tear down driver interrrupt info
*
* @rdev: radeon device pointer
*
* Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics).
*/
void radeon_irq_kms_fini(struct radeon_device *rdev)
{
drm_vblank_cleanup(rdev->ddev);
......@@ -212,6 +280,16 @@ void radeon_irq_kms_fini(struct radeon_device *rdev)
flush_work_sync(&rdev->hotplug_work);
}
/**
* radeon_irq_kms_sw_irq_get - enable software interrupt
*
* @rdev: radeon device pointer
* @ring: ring whose interrupt you want to enable
*
* Enables the software interrupt for a specific ring (all asics).
* The software interrupt is generally used to signal a fence on
* a particular ring.
*/
void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring)
{
unsigned long irqflags;
......@@ -226,6 +304,16 @@ void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring)
}
}
/**
* radeon_irq_kms_sw_irq_put - disable software interrupt
*
* @rdev: radeon device pointer
* @ring: ring whose interrupt you want to disable
*
* Disables the software interrupt for a specific ring (all asics).
* The software interrupt is generally used to signal a fence on
* a particular ring.
*/
void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring)
{
unsigned long irqflags;
......@@ -240,6 +328,15 @@ void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring)
}
}
/**
* radeon_irq_kms_pflip_irq_get - enable pageflip interrupt
*
* @rdev: radeon device pointer
* @crtc: crtc whose interrupt you want to enable
*
* Enables the pageflip interrupt for a specific crtc (all asics).
* For pageflips we use the vblank interrupt source.
*/
void radeon_irq_kms_pflip_irq_get(struct radeon_device *rdev, int crtc)
{
unsigned long irqflags;
......@@ -257,6 +354,15 @@ void radeon_irq_kms_pflip_irq_get(struct radeon_device *rdev, int crtc)
}
}
/**
* radeon_irq_kms_pflip_irq_put - disable pageflip interrupt
*
* @rdev: radeon device pointer
* @crtc: crtc whose interrupt you want to disable
*
* Disables the pageflip interrupt for a specific crtc (all asics).
* For pageflips we use the vblank interrupt source.
*/
void radeon_irq_kms_pflip_irq_put(struct radeon_device *rdev, int crtc)
{
unsigned long irqflags;
......@@ -274,6 +380,14 @@ void radeon_irq_kms_pflip_irq_put(struct radeon_device *rdev, int crtc)
}
}
/**
* radeon_irq_kms_enable_afmt - enable audio format change interrupt
*
* @rdev: radeon device pointer
* @block: afmt block whose interrupt you want to enable
*
* Enables the afmt change interrupt for a specific afmt block (all asics).
*/
void radeon_irq_kms_enable_afmt(struct radeon_device *rdev, int block)
{
unsigned long irqflags;
......@@ -285,6 +399,14 @@ void radeon_irq_kms_enable_afmt(struct radeon_device *rdev, int block)
}
/**
* radeon_irq_kms_disable_afmt - disable audio format change interrupt
*
* @rdev: radeon device pointer
* @block: afmt block whose interrupt you want to disable
*
* Disables the afmt change interrupt for a specific afmt block (all asics).
*/
void radeon_irq_kms_disable_afmt(struct radeon_device *rdev, int block)
{
unsigned long irqflags;
......@@ -295,6 +417,14 @@ void radeon_irq_kms_disable_afmt(struct radeon_device *rdev, int block)
spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
}
/**
* radeon_irq_kms_enable_hpd - enable hotplug detect interrupt
*
* @rdev: radeon device pointer
* @hpd_mask: mask of hpd pins you want to enable.
*
* Enables the hotplug detect interrupt for a specific hpd pin (all asics).
*/
void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
{
unsigned long irqflags;
......@@ -307,6 +437,14 @@ void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
}
/**
* radeon_irq_kms_disable_hpd - disable hotplug detect interrupt
*
* @rdev: radeon device pointer
* @hpd_mask: mask of hpd pins you want to disable.
*
* Disables the hotplug detect interrupt for a specific hpd pin (all asics).
*/
void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
{
unsigned long irqflags;
......@@ -319,6 +457,18 @@ void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
}
/**
* radeon_irq_kms_wait_gui_idle - waits for drawing engine to be idle
*
* @rdev: radeon device pointer
*
* Enabled the GUI idle interrupt and waits for it to fire (r6xx+).
* This is currently used to make sure the 3D engine is idle for power
* management, but should be replaces with proper fence waits.
* GUI idle interrupts don't work very well on pre-r6xx hw and it also
* does not take into account other aspects of the chip that may be busy.
* DO NOT USE GOING FORWARD.
*/
int radeon_irq_kms_wait_gui_idle(struct radeon_device *rdev)
{
unsigned long irqflags;
......
drivers/gpu/drm/radeon/radeon_kms.c
View file @ b68bdc1b
......@@ -33,6 +33,17 @@
#include <linux/vga_switcheroo.h>
#include <linux/slab.h>
/**
* radeon_driver_unload_kms - Main unload function for KMS.
*
* @dev: drm dev pointer
*
* This is the main unload function for KMS (all asics).
* It calls radeon_modeset_fini() to tear down the
* displays, and radeon_device_fini() to tear down
* the rest of the device (CP, writeback, etc.).
* Returns 0 on success.
*/
int radeon_driver_unload_kms(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
......@@ -46,6 +57,19 @@ int radeon_driver_unload_kms(struct drm_device *dev)
return 0;
}
/**
* radeon_driver_load_kms - Main load function for KMS.
*
* @dev: drm dev pointer
* @flags: device flags
*
* This is the main load function for KMS (all asics).
* It calls radeon_device_init() to set up the non-display
* parts of the chip (asic init, CP, writeback, etc.), and
* radeon_modeset_init() to set up the display parts
* (crtcs, encoders, hotplug detect, etc.).
* Returns 0 on success, error on failure.
*/
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
{
struct radeon_device *rdev;
......@@ -96,6 +120,16 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
return r;
}
/**
* radeon_set_filp_rights - Set filp right.
*
* @dev: drm dev pointer
* @owner: drm file
* @applier: drm file
* @value: value
*
* Sets the filp rights for the device (all asics).
*/
static void radeon_set_filp_rights(struct drm_device *dev,
struct drm_file **owner,
struct drm_file *applier,
......@@ -118,6 +152,18 @@ static void radeon_set_filp_rights(struct drm_device *dev,
/*
* Userspace get information ioctl
*/
/**
* radeon_info_ioctl - answer a device specific request.
*
* @rdev: radeon device pointer
* @data: request object
* @filp: drm filp
*
* This function is used to pass device specific parameters to the userspace
* drivers. Examples include: pci device id, pipeline parms, tiling params,
* etc. (all asics).
* Returns 0 on success, -EINVAL on failure.
*/
int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
{
struct radeon_device *rdev = dev->dev_private;
......@@ -301,16 +347,40 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
/*
* Outdated mess for old drm with Xorg being in charge (void function now).
*/
/**
* radeon_driver_firstopen_kms - drm callback for first open
*
* @dev: drm dev pointer
*
* Nothing to be done for KMS (all asics).
* Returns 0 on success.
*/
int radeon_driver_firstopen_kms(struct drm_device *dev)
{
return 0;
}
/**
* radeon_driver_firstopen_kms - drm callback for last close
*
* @dev: drm dev pointer
*
* Switch vga switcheroo state after last close (all asics).
*/
void radeon_driver_lastclose_kms(struct drm_device *dev)
{
vga_switcheroo_process_delayed_switch();
}
/**
* radeon_driver_open_kms - drm callback for open
*
* @dev: drm dev pointer
* @file_priv: drm file
*
* On device open, init vm on cayman+ (all asics).
* Returns 0 on success, error on failure.
*/
int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
{
struct radeon_device *rdev = dev->dev_private;
......@@ -339,6 +409,14 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
return 0;
}
/**
* radeon_driver_postclose_kms - drm callback for post close
*
* @dev: drm dev pointer
* @file_priv: drm file
*
* On device post close, tear down vm on cayman+ (all asics).
*/
void radeon_driver_postclose_kms(struct drm_device *dev,
struct drm_file *file_priv)
{
......@@ -354,6 +432,15 @@ void radeon_driver_postclose_kms(struct drm_device *dev,
}
}
/**
* radeon_driver_preclose_kms - drm callback for pre close
*
* @dev: drm dev pointer
* @file_priv: drm file
*
* On device pre close, tear down hyperz and cmask filps on r1xx-r5xx
* (all asics).
*/
void radeon_driver_preclose_kms(struct drm_device *dev,
struct drm_file *file_priv)
{
......@@ -367,6 +454,15 @@ void radeon_driver_preclose_kms(struct drm_device *dev,
/*
* VBlank related functions.
*/
/**
* radeon_get_vblank_counter_kms - get frame count
*
* @dev: drm dev pointer
* @crtc: crtc to get the frame count from
*
* Gets the frame count on the requested crtc (all asics).
* Returns frame count on success, -EINVAL on failure.
*/
u32 radeon_get_vblank_counter_kms(struct drm_device *dev, int crtc)
{
struct radeon_device *rdev = dev->dev_private;
......@@ -379,6 +475,15 @@ u32 radeon_get_vblank_counter_kms(struct drm_device *dev, int crtc)
return radeon_get_vblank_counter(rdev, crtc);
}
/**
* radeon_enable_vblank_kms - enable vblank interrupt
*
* @dev: drm dev pointer
* @crtc: crtc to enable vblank interrupt for
*
* Enable the interrupt on the requested crtc (all asics).
* Returns 0 on success, -EINVAL on failure.
*/
int radeon_enable_vblank_kms(struct drm_device *dev, int crtc)
{
struct radeon_device *rdev = dev->dev_private;
......@@ -397,6 +502,14 @@ int radeon_enable_vblank_kms(struct drm_device *dev, int crtc)
return r;
}
/**
* radeon_disable_vblank_kms - disable vblank interrupt
*
* @dev: drm dev pointer
* @crtc: crtc to disable vblank interrupt for
*
* Disable the interrupt on the requested crtc (all asics).
*/
void radeon_disable_vblank_kms(struct drm_device *dev, int crtc)
{
struct radeon_device *rdev = dev->dev_private;
......@@ -413,6 +526,19 @@ void radeon_disable_vblank_kms(struct drm_device *dev, int crtc)
spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
}
/**
* radeon_get_vblank_timestamp_kms - get vblank timestamp
*
* @dev: drm dev pointer
* @crtc: crtc to get the timestamp for
* @max_error: max error
* @vblank_time: time value
* @flags: flags passed to the driver
*
* Gets the timestamp on the requested crtc based on the
* scanout position. (all asics).
* Returns postive status flags on success, negative error on failure.
*/
int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
int *max_error,
struct timeval *vblank_time,
......
drivers/gpu/drm/radeon/radeon_ring.c
View file @ b68bdc1b
......@@ -35,10 +35,28 @@
#include "atom.h"
/*
* IB.
* IB
* IBs (Indirect Buffers) and areas of GPU accessible memory where
* commands are stored. You can put a pointer to the IB in the
* command ring and the hw will fetch the commands from the IB
* and execute them. Generally userspace acceleration drivers
* produce command buffers which are send to the kernel and
* put in IBs for execution by the requested ring.
*/
int radeon_debugfs_sa_init(struct radeon_device *rdev);
/**
* radeon_ib_get - request an IB (Indirect Buffer)
*
* @rdev: radeon_device pointer
* @ring: ring index the IB is associated with
* @ib: IB object returned
* @size: requested IB size
*
* Request an IB (all asics). IBs are allocated using the
* suballocator.
* Returns 0 on success, error on failure.
*/
int radeon_ib_get(struct radeon_device *rdev, int ring,
struct radeon_ib *ib, unsigned size)
{
......@@ -67,6 +85,14 @@ int radeon_ib_get(struct radeon_device *rdev, int ring,
return 0;
}
/**
* radeon_ib_free - free an IB (Indirect Buffer)
*
* @rdev: radeon_device pointer
* @ib: IB object to free
*
* Free an IB (all asics).
*/
void radeon_ib_free(struct radeon_device *rdev, struct radeon_ib *ib)
{
radeon_semaphore_free(rdev, &ib->semaphore, ib->fence);
......@@ -74,7 +100,28 @@ void radeon_ib_free(struct radeon_device *rdev, struct radeon_ib *ib)
radeon_fence_unref(&ib->fence);
}
int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib)
/**
* radeon_ib_schedule - schedule an IB (Indirect Buffer) on the ring
*
* @rdev: radeon_device pointer
* @ib: IB object to schedule
* @const_ib: Const IB to schedule (SI only)
*
* Schedule an IB on the associated ring (all asics).
* Returns 0 on success, error on failure.
*
* On SI, there are two parallel engines fed from the primary ring,
* the CE (Constant Engine) and the DE (Drawing Engine). Since
* resource descriptors have moved to memory, the CE allows you to
* prime the caches while the DE is updating register state so that
* the resource descriptors will be already in cache when the draw is
* processed. To accomplish this, the userspace driver submits two
* IBs, one for the CE and one for the DE. If there is a CE IB (called
* a CONST_IB), it will be put on the ring prior to the DE IB. Prior
* to SI there was just a DE IB.
*/
int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib,
struct radeon_ib *const_ib)
{
struct radeon_ring *ring = &rdev->ring[ib->ring];
bool need_sync = false;
......@@ -105,6 +152,10 @@ int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib)
if (!need_sync) {
radeon_semaphore_free(rdev, &ib->semaphore, NULL);
}
if (const_ib) {
radeon_ring_ib_execute(rdev, const_ib->ring, const_ib);
radeon_semaphore_free(rdev, &const_ib->semaphore, NULL);
}
radeon_ring_ib_execute(rdev, ib->ring, ib);
r = radeon_fence_emit(rdev, &ib->fence, ib->ring);
if (r) {
......@@ -112,10 +163,22 @@ int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib)
radeon_ring_unlock_undo(rdev, ring);
return r;
}
if (const_ib) {
const_ib->fence = radeon_fence_ref(ib->fence);
}
radeon_ring_unlock_commit(rdev, ring);
return 0;
}
/**
* radeon_ib_pool_init - Init the IB (Indirect Buffer) pool
*
* @rdev: radeon_device pointer
*
* Initialize the suballocator to manage a pool of memory
* for use as IBs (all asics).
* Returns 0 on success, error on failure.
*/
int radeon_ib_pool_init(struct radeon_device *rdev)
{
int r;
......@@ -142,6 +205,14 @@ int radeon_ib_pool_init(struct radeon_device *rdev)
return 0;
}
/**
* radeon_ib_pool_fini - Free the IB (Indirect Buffer) pool
*
* @rdev: radeon_device pointer
*
* Tear down the suballocator managing the pool of memory
* for use as IBs (all asics).
*/
void radeon_ib_pool_fini(struct radeon_device *rdev)
{
if (rdev->ib_pool_ready) {
......@@ -151,6 +222,16 @@ void radeon_ib_pool_fini(struct radeon_device *rdev)
}
}
/**
* radeon_ib_ring_tests - test IBs on the rings
*
* @rdev: radeon_device pointer
*
* Test an IB (Indirect Buffer) on each ring.
* If the test fails, disable the ring.
* Returns 0 on success, error if the primary GFX ring
* IB test fails.
*/
int radeon_ib_ring_tests(struct radeon_device *rdev)
{
unsigned i;
......@@ -182,10 +263,28 @@ int radeon_ib_ring_tests(struct radeon_device *rdev)
}
/*
* Ring.
* Rings
* Most engines on the GPU are fed via ring buffers. Ring
* buffers are areas of GPU accessible memory that the host
* writes commands into and the GPU reads commands out of.
* There is a rptr (read pointer) that determines where the
* GPU is currently reading, and a wptr (write pointer)
* which determines where the host has written. When the
* pointers are equal, the ring is idle. When the host
* writes commands to the ring buffer, it increments the
* wptr. The GPU then starts fetching commands and executes
* them until the pointers are equal again.
*/
int radeon_debugfs_ring_init(struct radeon_device *rdev, struct radeon_ring *ring);
/**
* radeon_ring_write - write a value to the ring
*
* @ring: radeon_ring structure holding ring information
* @v: dword (dw) value to write
*
* Write a value to the requested ring buffer (all asics).
*/
void radeon_ring_write(struct radeon_ring *ring, uint32_t v)
{
#if DRM_DEBUG_CODE
......@@ -199,21 +298,37 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t v)
ring->ring_free_dw--;
}
int radeon_ring_index(struct radeon_device *rdev, struct radeon_ring *ring)
/**
* radeon_ring_supports_scratch_reg - check if the ring supports
* writing to scratch registers
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
*
* Check if a specific ring supports writing to scratch registers (all asics).
* Returns true if the ring supports writing to scratch regs, false if not.
*/
bool radeon_ring_supports_scratch_reg(struct radeon_device *rdev,
struct radeon_ring *ring)
{
/* r1xx-r5xx only has CP ring */
if (rdev->family < CHIP_R600)
return RADEON_RING_TYPE_GFX_INDEX;
if (rdev->family >= CHIP_CAYMAN) {
if (ring == &rdev->ring[CAYMAN_RING_TYPE_CP1_INDEX])
return CAYMAN_RING_TYPE_CP1_INDEX;
else if (ring == &rdev->ring[CAYMAN_RING_TYPE_CP2_INDEX])
return CAYMAN_RING_TYPE_CP2_INDEX;
switch (ring->idx) {
case RADEON_RING_TYPE_GFX_INDEX:
case CAYMAN_RING_TYPE_CP1_INDEX:
case CAYMAN_RING_TYPE_CP2_INDEX:
return true;
default:
return false;
}
return RADEON_RING_TYPE_GFX_INDEX;
}
/**
* radeon_ring_free_size - update the free size
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
*
* Update the free dw slots in the ring buffer (all asics).
*/
void radeon_ring_free_size(struct radeon_device *rdev, struct radeon_ring *ring)
{
u32 rptr;
......@@ -232,7 +347,16 @@ void radeon_ring_free_size(struct radeon_device *rdev, struct radeon_ring *ring)
}
}
/**
* radeon_ring_alloc - allocate space on the ring buffer
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
* @ndw: number of dwords to allocate in the ring buffer
*
* Allocate @ndw dwords in the ring buffer (all asics).
* Returns 0 on success, error on failure.
*/
int radeon_ring_alloc(struct radeon_device *rdev, struct radeon_ring *ring, unsigned ndw)
{
int r;
......@@ -245,7 +369,7 @@ int radeon_ring_alloc(struct radeon_device *rdev, struct radeon_ring *ring, unsi
if (ndw < ring->ring_free_dw) {
break;
}
r = radeon_fence_wait_next_locked(rdev, radeon_ring_index(rdev, ring));
r = radeon_fence_wait_next_locked(rdev, ring->idx);
if (r)
return r;
}
......@@ -254,6 +378,17 @@ int radeon_ring_alloc(struct radeon_device *rdev, struct radeon_ring *ring, unsi
return 0;
}
/**
* radeon_ring_lock - lock the ring and allocate space on it
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
* @ndw: number of dwords to allocate in the ring buffer
*
* Lock the ring and allocate @ndw dwords in the ring buffer
* (all asics).
* Returns 0 on success, error on failure.
*/
int radeon_ring_lock(struct radeon_device *rdev, struct radeon_ring *ring, unsigned ndw)
{
int r;
......@@ -267,6 +402,16 @@ int radeon_ring_lock(struct radeon_device *rdev, struct radeon_ring *ring, unsig
return 0;
}
/**
* radeon_ring_commit - tell the GPU to execute the new
* commands on the ring buffer
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
*
* Update the wptr (write pointer) to tell the GPU to
* execute new commands on the ring buffer (all asics).
*/
void radeon_ring_commit(struct radeon_device *rdev, struct radeon_ring *ring)
{
/* We pad to match fetch size */
......@@ -278,23 +423,55 @@ void radeon_ring_commit(struct radeon_device *rdev, struct radeon_ring *ring)
(void)RREG32(ring->wptr_reg);
}
/**
* radeon_ring_unlock_commit - tell the GPU to execute the new
* commands on the ring buffer and unlock it
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
*
* Call radeon_ring_commit() then unlock the ring (all asics).
*/
void radeon_ring_unlock_commit(struct radeon_device *rdev, struct radeon_ring *ring)
{
radeon_ring_commit(rdev, ring);
mutex_unlock(&rdev->ring_lock);
}
/**
* radeon_ring_undo - reset the wptr
*
* @ring: radeon_ring structure holding ring information
*
* Reset the driver's copy of the wtpr (all asics).
*/
void radeon_ring_undo(struct radeon_ring *ring)
{
ring->wptr = ring->wptr_old;
}
/**
* radeon_ring_unlock_undo - reset the wptr and unlock the ring
*
* @ring: radeon_ring structure holding ring information
*
* Call radeon_ring_undo() then unlock the ring (all asics).
*/
void radeon_ring_unlock_undo(struct radeon_device *rdev, struct radeon_ring *ring)
{
radeon_ring_undo(ring);
mutex_unlock(&rdev->ring_lock);
}
/**
* radeon_ring_force_activity - add some nop packets to the ring
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
*
* Add some nop packets to the ring to force activity (all asics).
* Used for lockup detection to see if the rptr is advancing.
*/
void radeon_ring_force_activity(struct radeon_device *rdev, struct radeon_ring *ring)
{
int r;
......@@ -309,6 +486,13 @@ void radeon_ring_force_activity(struct radeon_device *rdev, struct radeon_ring *
}
}
/**
* radeon_ring_force_activity - update lockup variables
*
* @ring: radeon_ring structure holding ring information
*
* Update the last rptr value and timestamp (all asics).
*/
void radeon_ring_lockup_update(struct radeon_ring *ring)
{
ring->last_rptr = ring->rptr;
......@@ -374,25 +558,33 @@ unsigned radeon_ring_backup(struct radeon_device *rdev, struct radeon_ring *ring
uint32_t **data)
{
unsigned size, ptr, i;
int ridx = radeon_ring_index(rdev, ring);
/* just in case lock the ring */
mutex_lock(&rdev->ring_lock);
*data = NULL;
if (ring->ring_obj == NULL || !ring->rptr_save_reg) {
if (ring->ring_obj == NULL) {
mutex_unlock(&rdev->ring_lock);
return 0;
}
/* it doesn't make sense to save anything if all fences are signaled */
if (!radeon_fence_count_emitted(rdev, ridx)) {
if (!radeon_fence_count_emitted(rdev, ring->idx)) {
mutex_unlock(&rdev->ring_lock);
return 0;
}
/* calculate the number of dw on the ring */
ptr = RREG32(ring->rptr_save_reg);
if (ring->rptr_save_reg)
ptr = RREG32(ring->rptr_save_reg);
else if (rdev->wb.enabled)
ptr = le32_to_cpu(*ring->next_rptr_cpu_addr);
else {
/* no way to read back the next rptr */
mutex_unlock(&rdev->ring_lock);
return 0;
}
size = ring->wptr + (ring->ring_size / 4);
size -= ptr;
size &= ring->ptr_mask;
......@@ -444,6 +636,22 @@ int radeon_ring_restore(struct radeon_device *rdev, struct radeon_ring *ring,
return 0;
}
/**
* radeon_ring_init - init driver ring struct.
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
* @ring_size: size of the ring
* @rptr_offs: offset of the rptr writeback location in the WB buffer
* @rptr_reg: MMIO offset of the rptr register
* @wptr_reg: MMIO offset of the wptr register
* @ptr_reg_shift: bit offset of the rptr/wptr values
* @ptr_reg_mask: bit mask of the rptr/wptr values
* @nop: nop packet for this ring
*
* Initialize the driver information for the selected ring (all asics).
* Returns 0 on success, error on failure.
*/
int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsigned ring_size,
unsigned rptr_offs, unsigned rptr_reg, unsigned wptr_reg,
u32 ptr_reg_shift, u32 ptr_reg_mask, u32 nop)
......@@ -486,12 +694,25 @@ int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsig
}
ring->ptr_mask = (ring->ring_size / 4) - 1;
ring->ring_free_dw = ring->ring_size / 4;
if (rdev->wb.enabled) {
u32 index = RADEON_WB_RING0_NEXT_RPTR + (ring->idx * 4);
ring->next_rptr_gpu_addr = rdev->wb.gpu_addr + index;
ring->next_rptr_cpu_addr = &rdev->wb.wb[index/4];
}
if (radeon_debugfs_ring_init(rdev, ring)) {
DRM_ERROR("Failed to register debugfs file for rings !\n");
}
return 0;
}
/**
* radeon_ring_fini - tear down the driver ring struct.
*
* @rdev: radeon_device pointer
* @ring: radeon_ring structure holding ring information
*
* Tear down the driver information for the selected ring (all asics).
*/
void radeon_ring_fini(struct radeon_device *rdev, struct radeon_ring *ring)
{
int r;
......
drivers/gpu/drm/radeon/radeon_sa.c
View file @ b68bdc1b
......@@ -54,7 +54,7 @@ int radeon_sa_bo_manager_init(struct radeon_device *rdev,
{
int i, r;
spin_lock_init(&sa_manager->lock);
init_waitqueue_head(&sa_manager->wq);
sa_manager->bo = NULL;
sa_manager->size = size;
sa_manager->domain = domain;
......@@ -211,6 +211,39 @@ static bool radeon_sa_bo_try_alloc(struct radeon_sa_manager *sa_manager,
return false;
}
/**
* radeon_sa_event - Check if we can stop waiting
*
* @sa_manager: pointer to the sa_manager
* @size: number of bytes we want to allocate
* @align: alignment we need to match
*
* Check if either there is a fence we can wait for or
* enough free memory to satisfy the allocation directly
*/
static bool radeon_sa_event(struct radeon_sa_manager *sa_manager,
unsigned size, unsigned align)
{
unsigned soffset, eoffset, wasted;
int i;
for (i = 0; i < RADEON_NUM_RINGS; ++i) {
if (!list_empty(&sa_manager->flist[i])) {
return true;
}
}
soffset = radeon_sa_bo_hole_soffset(sa_manager);
eoffset = radeon_sa_bo_hole_eoffset(sa_manager);
wasted = (align - (soffset % align)) % align;
if ((eoffset - soffset) >= (size + wasted)) {
return true;
}
return false;
}
static bool radeon_sa_bo_next_hole(struct radeon_sa_manager *sa_manager,
struct radeon_fence **fences,
unsigned *tries)
......@@ -297,8 +330,8 @@ int radeon_sa_bo_new(struct radeon_device *rdev,
INIT_LIST_HEAD(&(*sa_bo)->olist);
INIT_LIST_HEAD(&(*sa_bo)->flist);
spin_lock(&sa_manager->lock);
do {
spin_lock(&sa_manager->wq.lock);
while(1) {
for (i = 0; i < RADEON_NUM_RINGS; ++i) {
fences[i] = NULL;
tries[i] = 0;
......@@ -309,30 +342,34 @@ int radeon_sa_bo_new(struct radeon_device *rdev,
if (radeon_sa_bo_try_alloc(sa_manager, *sa_bo,
size, align)) {
spin_unlock(&sa_manager->lock);
spin_unlock(&sa_manager->wq.lock);
return 0;
}
/* see if we can skip over some allocations */
} while (radeon_sa_bo_next_hole(sa_manager, fences, tries));
if (block) {
spin_unlock(&sa_manager->lock);
r = radeon_fence_wait_any(rdev, fences, false);
spin_lock(&sa_manager->lock);
if (r) {
/* if we have nothing to wait for we
are practically out of memory */
if (r == -ENOENT) {
r = -ENOMEM;
}
goto out_err;
}
if (!block) {
break;
}
spin_unlock(&sa_manager->wq.lock);
r = radeon_fence_wait_any(rdev, fences, false);
spin_lock(&sa_manager->wq.lock);
/* if we have nothing to wait for block */
if (r == -ENOENT) {
r = wait_event_interruptible_locked(
sa_manager->wq,
radeon_sa_event(sa_manager, size, align)
);
}
if (r) {
goto out_err;
}
} while (block);
};
out_err:
spin_unlock(&sa_manager->lock);
spin_unlock(&sa_manager->wq.lock);
kfree(*sa_bo);
*sa_bo = NULL;
return r;
......@@ -348,7 +385,7 @@ void radeon_sa_bo_free(struct radeon_device *rdev, struct radeon_sa_bo **sa_bo,
}
sa_manager = (*sa_bo)->manager;
spin_lock(&sa_manager->lock);
spin_lock(&sa_manager->wq.lock);
if (fence && !radeon_fence_signaled(fence)) {
(*sa_bo)->fence = radeon_fence_ref(fence);
list_add_tail(&(*sa_bo)->flist,
......@@ -356,7 +393,8 @@ void radeon_sa_bo_free(struct radeon_device *rdev, struct radeon_sa_bo **sa_bo,
} else {
radeon_sa_bo_remove_locked(*sa_bo);
}
spin_unlock(&sa_manager->lock);
wake_up_all_locked(&sa_manager->wq);
spin_unlock(&sa_manager->wq.lock);
*sa_bo = NULL;
}
......@@ -366,7 +404,7 @@ void radeon_sa_bo_dump_debug_info(struct radeon_sa_manager *sa_manager,
{
struct radeon_sa_bo *i;
spin_lock(&sa_manager->lock);
spin_lock(&sa_manager->wq.lock);
list_for_each_entry(i, &sa_manager->olist, olist) {
if (&i->olist == sa_manager->hole) {
seq_printf(m, ">");
......@@ -381,6 +419,6 @@ void radeon_sa_bo_dump_debug_info(struct radeon_sa_manager *sa_manager,
}
seq_printf(m, "\n");
}
spin_unlock(&sa_manager->lock);
spin_unlock(&sa_manager->wq.lock);
}
#endif
drivers/gpu/drm/radeon/radeon_test.c
View file @ b68bdc1b
......@@ -229,8 +229,6 @@ void radeon_test_ring_sync(struct radeon_device *rdev,
{
struct radeon_fence *fence1 = NULL, *fence2 = NULL;
struct radeon_semaphore *semaphore = NULL;
int ridxA = radeon_ring_index(rdev, ringA);
int ridxB = radeon_ring_index(rdev, ringB);
int r;
r = radeon_semaphore_create(rdev, &semaphore);
......@@ -241,18 +239,18 @@ void radeon_test_ring_sync(struct radeon_device *rdev,
r = radeon_ring_lock(rdev, ringA, 64);
if (r) {
DRM_ERROR("Failed to lock ring A %d\n", ridxA);
DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
goto out_cleanup;
}
radeon_semaphore_emit_wait(rdev, ridxA, semaphore);
r = radeon_fence_emit(rdev, &fence1, ridxA);
radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
r = radeon_fence_emit(rdev, &fence1, ringA->idx);
if (r) {
DRM_ERROR("Failed to emit fence 1\n");
radeon_ring_unlock_undo(rdev, ringA);
goto out_cleanup;
}
radeon_semaphore_emit_wait(rdev, ridxA, semaphore);
r = radeon_fence_emit(rdev, &fence2, ridxA);
radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
r = radeon_fence_emit(rdev, &fence2, ringA->idx);
if (r) {
DRM_ERROR("Failed to emit fence 2\n");
radeon_ring_unlock_undo(rdev, ringA);
......@@ -272,7 +270,7 @@ void radeon_test_ring_sync(struct radeon_device *rdev,
DRM_ERROR("Failed to lock ring B %p\n", ringB);
goto out_cleanup;
}
radeon_semaphore_emit_signal(rdev, ridxB, semaphore);
radeon_semaphore_emit_signal(rdev, ringB->idx, semaphore);
radeon_ring_unlock_commit(rdev, ringB);
r = radeon_fence_wait(fence1, false);
......@@ -293,7 +291,7 @@ void radeon_test_ring_sync(struct radeon_device *rdev,
DRM_ERROR("Failed to lock ring B %p\n", ringB);
goto out_cleanup;
}
radeon_semaphore_emit_signal(rdev, ridxB, semaphore);
radeon_semaphore_emit_signal(rdev, ringB->idx, semaphore);
radeon_ring_unlock_commit(rdev, ringB);
r = radeon_fence_wait(fence2, false);
......@@ -322,9 +320,6 @@ void radeon_test_ring_sync2(struct radeon_device *rdev,
{
struct radeon_fence *fenceA = NULL, *fenceB = NULL;
struct radeon_semaphore *semaphore = NULL;
int ridxA = radeon_ring_index(rdev, ringA);
int ridxB = radeon_ring_index(rdev, ringB);
int ridxC = radeon_ring_index(rdev, ringC);
bool sigA, sigB;
int i, r;
......@@ -336,11 +331,11 @@ void radeon_test_ring_sync2(struct radeon_device *rdev,
r = radeon_ring_lock(rdev, ringA, 64);
if (r) {
DRM_ERROR("Failed to lock ring A %d\n", ridxA);
DRM_ERROR("Failed to lock ring A %d\n", ringA->idx);
goto out_cleanup;
}
radeon_semaphore_emit_wait(rdev, ridxA, semaphore);
r = radeon_fence_emit(rdev, &fenceA, ridxA);
radeon_semaphore_emit_wait(rdev, ringA->idx, semaphore);
r = radeon_fence_emit(rdev, &fenceA, ringA->idx);
if (r) {
DRM_ERROR("Failed to emit sync fence 1\n");
radeon_ring_unlock_undo(rdev, ringA);
......@@ -350,11 +345,11 @@ void radeon_test_ring_sync2(struct radeon_device *rdev,
r = radeon_ring_lock(rdev, ringB, 64);
if (r) {
DRM_ERROR("Failed to lock ring B %d\n", ridxB);
DRM_ERROR("Failed to lock ring B %d\n", ringB->idx);
goto out_cleanup;
}
radeon_semaphore_emit_wait(rdev, ridxB, semaphore);
r = radeon_fence_emit(rdev, &fenceB, ridxB);
radeon_semaphore_emit_wait(rdev, ringB->idx, semaphore);
r = radeon_fence_emit(rdev, &fenceB, ringB->idx);
if (r) {
DRM_ERROR("Failed to create sync fence 2\n");
radeon_ring_unlock_undo(rdev, ringB);
......@@ -378,7 +373,7 @@ void radeon_test_ring_sync2(struct radeon_device *rdev,
DRM_ERROR("Failed to lock ring B %p\n", ringC);
goto out_cleanup;
}
radeon_semaphore_emit_signal(rdev, ridxC, semaphore);
radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
radeon_ring_unlock_commit(rdev, ringC);
for (i = 0; i < 30; ++i) {
......@@ -404,7 +399,7 @@ void radeon_test_ring_sync2(struct radeon_device *rdev,
DRM_ERROR("Failed to lock ring B %p\n", ringC);
goto out_cleanup;
}
radeon_semaphore_emit_signal(rdev, ridxC, semaphore);
radeon_semaphore_emit_signal(rdev, ringC->idx, semaphore);
radeon_ring_unlock_commit(rdev, ringC);
mdelay(1000);
......
drivers/gpu/drm/radeon/si.c
View file @ b68bdc1b
......@@ -1765,18 +1765,31 @@ void si_ring_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
struct radeon_ring *ring = &rdev->ring[ib->ring];
u32 header;
if (ring->rptr_save_reg) {
uint32_t next_rptr = ring->wptr + 3 + 4 + 8;
radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
radeon_ring_write(ring, ((ring->rptr_save_reg -
PACKET3_SET_CONFIG_REG_START) >> 2));
radeon_ring_write(ring, next_rptr);
}
if (ib->is_const_ib) {
/* set switch buffer packet before const IB */
radeon_ring_write(ring, PACKET3(PACKET3_SWITCH_BUFFER, 0));
radeon_ring_write(ring, 0);
if (ib->is_const_ib)
header = PACKET3(PACKET3_INDIRECT_BUFFER_CONST, 2);
else
} else {
u32 next_rptr;
if (ring->rptr_save_reg) {
next_rptr = ring->wptr + 3 + 4 + 8;
radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
radeon_ring_write(ring, ((ring->rptr_save_reg -
PACKET3_SET_CONFIG_REG_START) >> 2));
radeon_ring_write(ring, next_rptr);
} else if (rdev->wb.enabled) {
next_rptr = ring->wptr + 5 + 4 + 8;
radeon_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
radeon_ring_write(ring, (1 << 8));
radeon_ring_write(ring, ring->next_rptr_gpu_addr & 0xfffffffc);
radeon_ring_write(ring, upper_32_bits(ring->next_rptr_gpu_addr) & 0xffffffff);
radeon_ring_write(ring, next_rptr);
}
header = PACKET3(PACKET3_INDIRECT_BUFFER, 2);
}
radeon_ring_write(ring, header);
radeon_ring_write(ring,
......@@ -1787,18 +1800,20 @@ void si_ring_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
radeon_ring_write(ring, upper_32_bits(ib->gpu_addr) & 0xFFFF);
radeon_ring_write(ring, ib->length_dw | (ib->vm_id << 24));
/* flush read cache over gart for this vmid */
radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
radeon_ring_write(ring, (CP_COHER_CNTL2 - PACKET3_SET_CONFIG_REG_START) >> 2);
radeon_ring_write(ring, ib->vm_id);
radeon_ring_write(ring, PACKET3(PACKET3_SURFACE_SYNC, 3));
radeon_ring_write(ring, PACKET3_TCL1_ACTION_ENA |
PACKET3_TC_ACTION_ENA |
PACKET3_SH_KCACHE_ACTION_ENA |
PACKET3_SH_ICACHE_ACTION_ENA);
radeon_ring_write(ring, 0xFFFFFFFF);
radeon_ring_write(ring, 0);
radeon_ring_write(ring, 10); /* poll interval */
if (!ib->is_const_ib) {
/* flush read cache over gart for this vmid */
radeon_ring_write(ring, PACKET3(PACKET3_SET_CONFIG_REG, 1));
radeon_ring_write(ring, (CP_COHER_CNTL2 - PACKET3_SET_CONFIG_REG_START) >> 2);
radeon_ring_write(ring, ib->vm_id);
radeon_ring_write(ring, PACKET3(PACKET3_SURFACE_SYNC, 3));
radeon_ring_write(ring, PACKET3_TCL1_ACTION_ENA |
PACKET3_TC_ACTION_ENA |
PACKET3_SH_KCACHE_ACTION_ENA |
PACKET3_SH_ICACHE_ACTION_ENA);
radeon_ring_write(ring, 0xFFFFFFFF);
radeon_ring_write(ring, 0);
radeon_ring_write(ring, 10); /* poll interval */
}
}
/*
......
drivers/gpu/drm/radeon/sid.h
View file @ b68bdc1b
......@@ -901,5 +901,6 @@
#define PACKET3_WAIT_ON_DE_COUNTER_DIFF 0x88
#define PACKET3_SET_CE_DE_COUNTERS 0x89
#define PACKET3_WAIT_ON_AVAIL_BUFFER 0x8A
#define PACKET3_SWITCH_BUFFER 0x8B
#endif
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