2 * Copyright 2011 Red Hat Inc.
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5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
26 #include "nouveau_drv.h"
27 #include <drm/nouveau_drm.h>
30 struct page *r100c10_page;
35 nvc0_mfb_subp_isr(struct drm_device *dev, int unit, int subp)
37 u32 subp_base = 0x141000 + (unit * 0x2000) + (subp * 0x400);
38 u32 stat = nv_rd32(dev, subp_base + 0x020);
41 NV_INFO(dev, "PMFB%d_SUBP%d: 0x%08x\n", unit, subp, stat);
42 nv_wr32(dev, subp_base + 0x020, stat);
47 nvc0_mfb_isr(struct drm_device *dev)
49 u32 units = nv_rd32(dev, 0x00017c);
51 u32 subp, unit = ffs(units) - 1;
52 for (subp = 0; subp < 2; subp++)
53 nvc0_mfb_subp_isr(dev, unit, subp);
54 units &= ~(1 << unit);
57 /* we do something horribly wrong and upset PMFB a lot, so mask off
58 * interrupts from it after the first one until it's fixed
60 nv_mask(dev, 0x000640, 0x02000000, 0x00000000);
64 nvc0_fb_destroy(struct drm_device *dev)
66 struct drm_nouveau_private *dev_priv = dev->dev_private;
67 struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
68 struct nvc0_fb_priv *priv = pfb->priv;
70 nouveau_irq_unregister(dev, 25);
72 if (priv->r100c10_page) {
73 pci_unmap_page(dev->pdev, priv->r100c10, PAGE_SIZE,
74 PCI_DMA_BIDIRECTIONAL);
75 __free_page(priv->r100c10_page);
83 nvc0_fb_create(struct drm_device *dev)
85 struct drm_nouveau_private *dev_priv = dev->dev_private;
86 struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
87 struct nvc0_fb_priv *priv;
89 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
94 priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
95 if (!priv->r100c10_page) {
100 priv->r100c10 = pci_map_page(dev->pdev, priv->r100c10_page, 0,
101 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
102 if (pci_dma_mapping_error(dev->pdev, priv->r100c10)) {
103 nvc0_fb_destroy(dev);
107 nouveau_irq_register(dev, 25, nvc0_mfb_isr);
112 nvc0_fb_init(struct drm_device *dev)
114 struct drm_nouveau_private *dev_priv = dev->dev_private;
115 struct nvc0_fb_priv *priv;
118 if (!dev_priv->engine.fb.priv) {
119 ret = nvc0_fb_create(dev);
123 priv = dev_priv->engine.fb.priv;
125 nv_wr32(dev, 0x100c10, priv->r100c10 >> 8);
126 nv_mask(dev, 0x17e820, 0x00100000, 0x00000000); /* NV_PLTCG_INTR_EN */
131 nvc0_fb_takedown(struct drm_device *dev)
133 nvc0_fb_destroy(dev);