| /* |
| * Copyright (C) 2006 Ben Skeggs. |
| * |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial |
| * portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| */ |
| |
| /* |
| * Authors: |
| * Ben Skeggs <darktama@iinet.net.au> |
| */ |
| |
| #include "drmP.h" |
| #include "drm.h" |
| #include "nouveau_drm.h" |
| #include "nouveau_drv.h" |
| #include "nouveau_reg.h" |
| |
| void nouveau_irq_preinstall(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| |
| /* Master disable */ |
| NV_WRITE(NV03_PMC_INTR_EN_0, 0); |
| } |
| |
| void nouveau_irq_postinstall(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| |
| /* Master enable */ |
| NV_WRITE(NV03_PMC_INTR_EN_0, NV_PMC_INTR_EN_0_MASTER_ENABLE); |
| } |
| |
| void nouveau_irq_uninstall(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| |
| /* Master disable */ |
| NV_WRITE(NV03_PMC_INTR_EN_0, 0); |
| } |
| |
| static void nouveau_fifo_irq_handler(struct drm_device *dev) |
| { |
| uint32_t status, chmode, chstat, channel; |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| |
| status = NV_READ(NV03_PFIFO_INTR_0); |
| if (!status) |
| return; |
| chmode = NV_READ(NV04_PFIFO_MODE); |
| chstat = NV_READ(NV04_PFIFO_DMA); |
| channel=NV_READ(NV03_PFIFO_CACHE1_PUSH1)&(nouveau_fifo_number(dev)-1); |
| |
| if (status & NV_PFIFO_INTR_CACHE_ERROR) { |
| uint32_t c1get, c1method, c1data; |
| |
| DRM_ERROR("PFIFO error interrupt\n"); |
| |
| c1get = NV_READ(NV03_PFIFO_CACHE1_GET) >> 2; |
| if (dev_priv->card_type < NV_40) { |
| /* Untested, so it may not work.. */ |
| c1method = NV_READ(NV04_PFIFO_CACHE1_METHOD(c1get)); |
| c1data = NV_READ(NV04_PFIFO_CACHE1_DATA(c1get)); |
| } else { |
| c1method = NV_READ(NV40_PFIFO_CACHE1_METHOD(c1get)); |
| c1data = NV_READ(NV40_PFIFO_CACHE1_DATA(c1get)); |
| } |
| |
| DRM_ERROR("Channel %d/%d - Method 0x%04x, Data 0x%08x\n", |
| channel, (c1method >> 13) & 7, c1method & 0x1ffc, |
| c1data); |
| |
| status &= ~NV_PFIFO_INTR_CACHE_ERROR; |
| NV_WRITE(NV03_PFIFO_INTR_0, NV_PFIFO_INTR_CACHE_ERROR); |
| } |
| |
| if (status & NV_PFIFO_INTR_DMA_PUSHER) { |
| DRM_ERROR("PFIFO DMA pusher interrupt: ch%d, 0x%08x\n", |
| channel, NV_READ(NV04_PFIFO_CACHE1_DMA_GET)); |
| |
| status &= ~NV_PFIFO_INTR_DMA_PUSHER; |
| NV_WRITE(NV03_PFIFO_INTR_0, NV_PFIFO_INTR_DMA_PUSHER); |
| |
| NV_WRITE(NV04_PFIFO_CACHE1_DMA_STATE, 0x00000000); |
| if (NV_READ(NV04_PFIFO_CACHE1_DMA_PUT)!=NV_READ(NV04_PFIFO_CACHE1_DMA_GET)) |
| { |
| uint32_t getval=NV_READ(NV04_PFIFO_CACHE1_DMA_GET)+4; |
| NV_WRITE(NV04_PFIFO_CACHE1_DMA_GET,getval); |
| } |
| } |
| |
| if (status) { |
| DRM_ERROR("Unhandled PFIFO interrupt: status=0x%08x\n", status); |
| |
| NV_WRITE(NV03_PFIFO_INTR_0, status); |
| } |
| |
| NV_WRITE(NV03_PMC_INTR_0, NV_PMC_INTR_0_PFIFO_PENDING); |
| } |
| |
| #if 0 |
| static void nouveau_nv04_context_switch(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| uint32_t channel,i; |
| uint32_t max=0; |
| NV_WRITE(NV04_PGRAPH_FIFO,0x0); |
| channel=NV_READ(NV03_PFIFO_CACHE1_PUSH1)&(nouveau_fifo_number(dev)-1); |
| //DRM_INFO("raw PFIFO_CACH1_PHS1 reg is %x\n",NV_READ(NV03_PFIFO_CACHE1_PUSH1)); |
| //DRM_INFO("currently on channel %d\n",channel); |
| for (i=0;i<nouveau_fifo_number(dev);i++) |
| if ((dev_priv->fifos[i].used)&&(i!=channel)) { |
| uint32_t put,get,pending; |
| //put=NV_READ(dev_priv->ramfc_offset+i*32); |
| //get=NV_READ(dev_priv->ramfc_offset+4+i*32); |
| put=NV_READ(NV03_FIFO_REGS_DMAPUT(i)); |
| get=NV_READ(NV03_FIFO_REGS_DMAGET(i)); |
| pending=NV_READ(NV04_PFIFO_DMA); |
| //DRM_INFO("Channel %d (put/get %x/%x)\n",i,put,get); |
| /* mark all pending channels as such */ |
| if ((put!=get)&!(pending&(1<<i))) |
| { |
| pending|=(1<<i); |
| NV_WRITE(NV04_PFIFO_DMA,pending); |
| } |
| max++; |
| } |
| nouveau_wait_for_idle(dev); |
| |
| #if 1 |
| /* 2-channel commute */ |
| // NV_WRITE(NV03_PFIFO_CACHE1_PUSH1,channel|0x100); |
| if (channel==0) |
| channel=1; |
| else |
| channel=0; |
| // dev_priv->cur_fifo=channel; |
| NV_WRITE(NV04_PFIFO_NEXT_CHANNEL,channel|0x100); |
| #endif |
| //NV_WRITE(NV03_PFIFO_CACHE1_PUSH1,max|0x100); |
| //NV_WRITE(0x2050,max|0x100); |
| |
| NV_WRITE(NV04_PGRAPH_FIFO,0x1); |
| |
| } |
| #endif |
| |
| |
| struct nouveau_bitfield_names |
| { |
| uint32_t mask; |
| const char * name; |
| }; |
| |
| static struct nouveau_bitfield_names nouveau_nstatus_names[] = |
| { |
| { NV03_PGRAPH_NSTATUS_STATE_IN_USE, "STATE_IN_USE" }, |
| { NV03_PGRAPH_NSTATUS_INVALID_STATE, "INVALID_STATE" }, |
| { NV03_PGRAPH_NSTATUS_BAD_ARGUMENT, "BAD_ARGUMENT" }, |
| { NV03_PGRAPH_NSTATUS_PROTECTION_FAULT, "PROTECTION_FAULT" } |
| }; |
| |
| static struct nouveau_bitfield_names nouveau_nsource_names[] = |
| { |
| { NV03_PGRAPH_NSOURCE_NOTIFICATION, "NOTIFICATION" }, |
| { NV03_PGRAPH_NSOURCE_DATA_ERROR, "DATA_ERROR" }, |
| { NV03_PGRAPH_NSOURCE_PROTECTION_ERROR, "PROTECTION_ERROR" }, |
| { NV03_PGRAPH_NSOURCE_RANGE_EXCEPTION, "RANGE_EXCEPTION" }, |
| { NV03_PGRAPH_NSOURCE_LIMIT_COLOR, "LIMIT_COLOR" }, |
| { NV03_PGRAPH_NSOURCE_LIMIT_ZETA, "LIMIT_ZETA" }, |
| { NV03_PGRAPH_NSOURCE_ILLEGAL_MTHD, "ILLEGAL_MTHD" }, |
| { NV03_PGRAPH_NSOURCE_DMA_R_PROTECTION, "DMA_R_PROTECTION" }, |
| { NV03_PGRAPH_NSOURCE_DMA_W_PROTECTION, "DMA_W_PROTECTION" }, |
| { NV03_PGRAPH_NSOURCE_FORMAT_EXCEPTION, "FORMAT_EXCEPTION" }, |
| { NV03_PGRAPH_NSOURCE_PATCH_EXCEPTION, "PATCH_EXCEPTION" }, |
| { NV03_PGRAPH_NSOURCE_STATE_INVALID, "STATE_INVALID" }, |
| { NV03_PGRAPH_NSOURCE_DOUBLE_NOTIFY, "DOUBLE_NOTIFY" }, |
| { NV03_PGRAPH_NSOURCE_NOTIFY_IN_USE, "NOTIFY_IN_USE" }, |
| { NV03_PGRAPH_NSOURCE_METHOD_CNT, "METHOD_CNT" }, |
| { NV03_PGRAPH_NSOURCE_BFR_NOTIFICATION, "BFR_NOTIFICATION" }, |
| { NV03_PGRAPH_NSOURCE_DMA_VTX_PROTECTION, "DMA_VTX_PROTECTION" }, |
| { NV03_PGRAPH_NSOURCE_DMA_WIDTH_A, "DMA_WIDTH_A" }, |
| { NV03_PGRAPH_NSOURCE_DMA_WIDTH_B, "DMA_WIDTH_B" }, |
| }; |
| |
| static void |
| nouveau_print_bitfield_names(uint32_t value, |
| const struct nouveau_bitfield_names *namelist, |
| const int namelist_len) |
| { |
| int i; |
| for(i=0; i<namelist_len; ++i) { |
| uint32_t mask = namelist[i].mask; |
| if(value & mask) { |
| printk(" %s", namelist[i].name); |
| value &= ~mask; |
| } |
| } |
| if(value) |
| printk(" (unknown bits 0x%08x)", value); |
| } |
| |
| static int |
| nouveau_graph_trapped_channel(struct drm_device *dev, int *channel_ret) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| int channel; |
| |
| if (dev_priv->card_type < NV_40) { |
| channel = (NV_READ(0x400704) >> 20) & 0x1f; |
| } else |
| if (dev_priv->card_type < NV_50) { |
| uint32_t cur_grctx = (NV_READ(0x40032C) & 0xfffff) << 4; |
| |
| /* 0x400704 *sometimes* contains a sensible channel ID, but |
| * mostly not.. for now lookup which channel owns the active |
| * PGRAPH context. Probably a better way, but this'll do |
| * for now. |
| */ |
| for (channel = 0; channel < 32; channel++) { |
| if (dev_priv->fifos[channel] == NULL) |
| continue; |
| if (cur_grctx == |
| dev_priv->fifos[channel]->ramin_grctx->instance) |
| break; |
| } |
| if (channel == 32) { |
| DRM_ERROR("AIII, unable to determine active channel " |
| "from PGRAPH context 0x%08x\n", cur_grctx); |
| return -EINVAL; |
| } |
| } else { |
| uint32_t cur_grctx = (NV_READ(0x40032C) & 0xfffff) << 12; |
| |
| for (channel = 0; channel < 128; channel++) { |
| if (dev_priv->fifos[channel] == NULL) |
| continue; |
| if (cur_grctx == |
| dev_priv->fifos[channel]->ramin_grctx->instance) |
| break; |
| } |
| if (channel == 128) { |
| DRM_ERROR("AIII, unable to determine active channel " |
| "from PGRAPH context 0x%08x\n", cur_grctx); |
| return -EINVAL; |
| } |
| } |
| |
| if (channel > nouveau_fifo_number(dev) || |
| dev_priv->fifos[channel] == NULL) { |
| DRM_ERROR("AIII, invalid/inactive channel id %d\n", channel); |
| return -EINVAL; |
| } |
| |
| *channel_ret = channel; |
| return 0; |
| } |
| |
| static void |
| nouveau_graph_dump_trap_info(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| uint32_t address; |
| uint32_t channel, class; |
| uint32_t method, subc, data; |
| uint32_t nsource, nstatus; |
| |
| if (nouveau_graph_trapped_channel(dev, &channel)) |
| channel = -1; |
| |
| address = NV_READ(0x400704); |
| subc = (address >> 16) & 0x7; |
| method = address & 0x1FFC; |
| data = NV_READ(0x400708); |
| nsource = NV_READ(NV03_PGRAPH_NSOURCE); |
| nstatus = NV_READ(NV03_PGRAPH_NSTATUS); |
| if (dev_priv->card_type < NV_50) { |
| class = NV_READ(0x400160 + subc*4) & 0xFFFF; |
| } else { |
| class = NV_READ(0x400814); |
| } |
| |
| DRM_ERROR("nSource:"); |
| nouveau_print_bitfield_names(nsource, nouveau_nsource_names, |
| ARRAY_SIZE(nouveau_nsource_names)); |
| printk(", nStatus:"); |
| nouveau_print_bitfield_names(nstatus, nouveau_nstatus_names, |
| ARRAY_SIZE(nouveau_nstatus_names)); |
| printk("\n"); |
| |
| DRM_ERROR("Channel %d/%d (class 0x%04x) - Method 0x%04x, Data 0x%08x\n", |
| channel, subc, class, method, data); |
| } |
| |
| static void nouveau_pgraph_irq_handler(struct drm_device *dev) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| uint32_t status, nsource; |
| |
| status = NV_READ(NV03_PGRAPH_INTR); |
| if (!status) |
| return; |
| nsource = NV_READ(NV03_PGRAPH_NSOURCE); |
| |
| if (status & NV_PGRAPH_INTR_NOTIFY) { |
| DRM_DEBUG("PGRAPH notify interrupt\n"); |
| |
| nouveau_graph_dump_trap_info(dev); |
| |
| status &= ~NV_PGRAPH_INTR_NOTIFY; |
| NV_WRITE(NV03_PGRAPH_INTR, NV_PGRAPH_INTR_NOTIFY); |
| } |
| |
| if (status & NV_PGRAPH_INTR_ERROR) { |
| DRM_ERROR("PGRAPH error interrupt\n"); |
| |
| nouveau_graph_dump_trap_info(dev); |
| |
| status &= ~NV_PGRAPH_INTR_ERROR; |
| NV_WRITE(NV03_PGRAPH_INTR, NV_PGRAPH_INTR_ERROR); |
| } |
| |
| if (status & NV_PGRAPH_INTR_CONTEXT_SWITCH) { |
| uint32_t channel=NV_READ(NV03_PFIFO_CACHE1_PUSH1)&(nouveau_fifo_number(dev)-1); |
| DRM_DEBUG("PGRAPH context switch interrupt channel %x\n",channel); |
| switch(dev_priv->card_type) |
| { |
| case NV_04: |
| case NV_05: |
| nouveau_nv04_context_switch(dev); |
| break; |
| case NV_10: |
| case NV_11: |
| case NV_17: |
| nouveau_nv10_context_switch(dev); |
| break; |
| case NV_20: |
| case NV_30: |
| nouveau_nv20_context_switch(dev); |
| break; |
| default: |
| DRM_ERROR("Context switch not implemented\n"); |
| break; |
| } |
| |
| status &= ~NV_PGRAPH_INTR_CONTEXT_SWITCH; |
| NV_WRITE(NV03_PGRAPH_INTR, NV_PGRAPH_INTR_CONTEXT_SWITCH); |
| } |
| |
| if (status) { |
| DRM_ERROR("Unhandled PGRAPH interrupt: STAT=0x%08x\n", status); |
| NV_WRITE(NV03_PGRAPH_INTR, status); |
| } |
| |
| NV_WRITE(NV03_PMC_INTR_0, NV_PMC_INTR_0_PGRAPH_PENDING); |
| } |
| |
| static void nouveau_crtc_irq_handler(struct drm_device *dev, int crtc) |
| { |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| |
| if (crtc&1) { |
| NV_WRITE(NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK); |
| } |
| |
| if (crtc&2) { |
| NV_WRITE(NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK); |
| } |
| } |
| |
| irqreturn_t nouveau_irq_handler(DRM_IRQ_ARGS) |
| { |
| struct drm_device *dev = (struct drm_device*)arg; |
| struct drm_nouveau_private *dev_priv = dev->dev_private; |
| uint32_t status; |
| |
| status = NV_READ(NV03_PMC_INTR_0); |
| if (!status) |
| return IRQ_NONE; |
| |
| if (status & NV_PMC_INTR_0_PFIFO_PENDING) { |
| nouveau_fifo_irq_handler(dev); |
| status &= ~NV_PMC_INTR_0_PFIFO_PENDING; |
| } |
| |
| if (status & NV_PMC_INTR_0_PGRAPH_PENDING) { |
| nouveau_pgraph_irq_handler(dev); |
| status &= ~NV_PMC_INTR_0_PGRAPH_PENDING; |
| } |
| |
| if (status & NV_PMC_INTR_0_CRTCn_PENDING) { |
| nouveau_crtc_irq_handler(dev, (status>>24)&3); |
| status &= ~NV_PMC_INTR_0_CRTCn_PENDING; |
| } |
| |
| if (status) |
| DRM_ERROR("Unhandled PMC INTR status bits 0x%08x\n", status); |
| |
| return IRQ_HANDLED; |
| } |
| |