[Openchrome-devel] [RFC 9/21] DRM: Add VIA DRM driver
James Simmons
jsimmons at infradead.org
Sat Jun 8 09:50:11 PDT 2013
commit 761567d6dd4ec80dbc39052ac74edf7626922f55
Author: James Simmons <jsimmons at infradead.org>
Date: Sat Jun 8 09:39:04 2013 -0400
via: Hardware initalization/power management functions.
This code handles setting the inital state of the 2D,3D and MPEG engine
as well as our pcie gart tables. The code was separated out here because
these routines will be needed when we return from suspend.
Signed-Off-by: James Simmons <jsimmons at infradead.org>
diff --git a/drivers/gpu/drm/via/via_pm.c b/drivers/gpu/drm/via/via_pm.c
new file mode 100644
index 0000000..874540a
--- /dev/null
+++ b/drivers/gpu/drm/via/via_pm.c
@@ -0,0 +1,246 @@
+/*
+ * Copyright 2012 James Simmons <jsimmons at infradead.org>. 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, sub license,
+ * 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) OR COPYRIGHT HOLDER(S) 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.
+ */
+
+#include "drmP.h"
+#include "via_drv.h"
+
+static void
+via_init_2d(struct drm_via_private *dev_priv, int pci_device)
+{
+ int i;
+
+ for (i = 0x04; i < 0x5c; i += 4)
+ VIA_WRITE(i, 0x0);
+
+ /* For 410 chip*/
+ if (pci_device == PCI_DEVICE_ID_VIA_VX900)
+ VIA_WRITE(0x60, 0x0);
+}
+
+static void
+via_init_3d(struct drm_via_private *dev_priv)
+{
+ unsigned long texture_stage;
+ int i;
+
+ VIA_WRITE(VIA_REG_TRANSET, 0x00010000);
+ for (i = 0; i <= 0x9A; i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, i << 24);
+
+ /* guardband clipping default setting */
+ VIA_WRITE(VIA_REG_TRANSPACE, (0x88 << 24) | 0x00001ed0);
+ VIA_WRITE(VIA_REG_TRANSPACE, (0x89 << 24) | 0x00000800);
+
+ /* Initial Texture Stage Setting */
+ for (texture_stage = 0; texture_stage <= 0xf; texture_stage++) {
+ VIA_WRITE(VIA_REG_TRANSET, (0x00020000 | 0x00000000 |
+ (texture_stage & 0xf) << 24));
+ for (i = 0 ; i <= 0x30 ; i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, i << 24);
+ }
+
+ /* Initial Texture Sampler Setting */
+ for (texture_stage = 0; texture_stage <= 0xf; texture_stage++) {
+ VIA_WRITE(VIA_REG_TRANSET, (0x00020000 | 0x20000000 |
+ (texture_stage & 0x10) << 24));
+ for (i = 0; i <= 0x36; i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, i << 24);
+ }
+
+ VIA_WRITE(VIA_REG_TRANSET, (0x00020000 | 0xfe000000));
+ for (i = 0 ; i <= 0x13 ; i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, i << 24);
+
+ /* degamma table */
+ VIA_WRITE(VIA_REG_TRANSET, (0x00030000 | 0x15000000));
+ VIA_WRITE(VIA_REG_TRANSPACE, (0x40000000 | (30 << 20) | (15 << 10) | (5)));
+ VIA_WRITE(VIA_REG_TRANSPACE, ((119 << 20) | (81 << 10) | (52)));
+ VIA_WRITE(VIA_REG_TRANSPACE, ((283 << 20) | (219 << 10) | (165)));
+ VIA_WRITE(VIA_REG_TRANSPACE, ((535 << 20) | (441 << 10) | (357)));
+ VIA_WRITE(VIA_REG_TRANSPACE, ((119 << 20) | (884 << 20) | (757 << 10) | (640)));
+
+ /* gamma table */
+ VIA_WRITE(VIA_REG_TRANSET, (0x00030000 | 0x17000000));
+ VIA_WRITE(VIA_REG_TRANSPACE, (0x40000000 | (13 << 20) | (13 << 10) | (13)));
+ VIA_WRITE(VIA_REG_TRANSPACE, (0x40000000 | (26 << 20) | (26 << 10) | (26)));
+ VIA_WRITE(VIA_REG_TRANSPACE, (0x40000000 | (39 << 20) | (39 << 10) | (39)));
+ VIA_WRITE(VIA_REG_TRANSPACE, ((51 << 20) | (51 << 10) | (51)));
+ VIA_WRITE(VIA_REG_TRANSPACE, ((71 << 20) | (71 << 10) | (71)));
+ VIA_WRITE(VIA_REG_TRANSPACE, (87 << 20) | (87 << 10) | (87));
+ VIA_WRITE(VIA_REG_TRANSPACE, (113 << 20) | (113 << 10) | (113));
+ VIA_WRITE(VIA_REG_TRANSPACE, (135 << 20) | (135 << 10) | (135));
+ VIA_WRITE(VIA_REG_TRANSPACE, (170 << 20) | (170 << 10) | (170));
+ VIA_WRITE(VIA_REG_TRANSPACE, (199 << 20) | (199 << 10) | (199));
+ VIA_WRITE(VIA_REG_TRANSPACE, (246 << 20) | (246 << 10) | (246));
+ VIA_WRITE(VIA_REG_TRANSPACE, (284 << 20) | (284 << 10) | (284));
+ VIA_WRITE(VIA_REG_TRANSPACE, (317 << 20) | (317 << 10) | (317));
+ VIA_WRITE(VIA_REG_TRANSPACE, (347 << 20) | (347 << 10) | (347));
+ VIA_WRITE(VIA_REG_TRANSPACE, (373 << 20) | (373 << 10) | (373));
+ VIA_WRITE(VIA_REG_TRANSPACE, (398 << 20) | (398 << 10) | (398));
+ VIA_WRITE(VIA_REG_TRANSPACE, (442 << 20) | (442 << 10) | (442));
+ VIA_WRITE(VIA_REG_TRANSPACE, (481 << 20) | (481 << 10) | (481));
+ VIA_WRITE(VIA_REG_TRANSPACE, (517 << 20) | (517 << 10) | (517));
+ VIA_WRITE(VIA_REG_TRANSPACE, (550 << 20) | (550 << 10) | (550));
+ VIA_WRITE(VIA_REG_TRANSPACE, (609 << 20) | (609 << 10) | (609));
+ VIA_WRITE(VIA_REG_TRANSPACE, (662 << 20) | (662 << 10) | (662));
+ VIA_WRITE(VIA_REG_TRANSPACE, (709 << 20) | (709 << 10) | (709));
+ VIA_WRITE(VIA_REG_TRANSPACE, (753 << 20) | (753 << 10) | (753));
+ VIA_WRITE(VIA_REG_TRANSPACE, (794 << 20) | (794 << 10) | (794));
+ VIA_WRITE(VIA_REG_TRANSPACE, (832 << 20) | (832 << 10) | (832));
+ VIA_WRITE(VIA_REG_TRANSPACE, (868 << 20) | (868 << 10) | (868));
+ VIA_WRITE(VIA_REG_TRANSPACE, (902 << 20) | (902 << 10) | (902));
+ VIA_WRITE(VIA_REG_TRANSPACE, (934 << 20) | (934 << 10) | (934));
+ VIA_WRITE(VIA_REG_TRANSPACE, (966 << 20) | (966 << 10) | (966));
+ VIA_WRITE(VIA_REG_TRANSPACE, (996 << 20) | (996 << 10) | (996));
+
+ /* Initialize INV_ParaSubType_TexPa */
+ VIA_WRITE(VIA_REG_TRANSET, (0x00030000 | 0x00000000));
+ for (i = 0; i < 16; i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x00000000);
+
+ /* Initialize INV_ParaSubType_4X4Cof */
+ VIA_WRITE(VIA_REG_TRANSET, (0x00030000 | 0x11000000));
+ for (i = 0; i < 32; i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x00000000);
+
+ /* Initialize INV_ParaSubType_StipPal */
+ VIA_WRITE(VIA_REG_TRANSET, (0x00030000 | 0x14000000));
+ for (i = 0; i < (5 + 3); i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x00000000);
+
+ /* primitive setting & vertex format */
+ VIA_WRITE(VIA_REG_TRANSET, (0x00040000));
+ for (i = 0; i <= 0x62; i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, (i << 24));
+
+ /* c2s clamping value for screen coordinate */
+ VIA_WRITE(VIA_REG_TRANSPACE, (0x50 << 24) | 0x00000000);
+ VIA_WRITE(VIA_REG_TRANSPACE, (0x51 << 24) | 0x00000000);
+ VIA_WRITE(VIA_REG_TRANSPACE, (0x52 << 24) | 0x00147fff);
+
+ /* ParaType 0xFE - Configure and Misc Setting */
+ VIA_WRITE(VIA_REG_TRANSET, (0x00fe0000));
+ for (i = 0; i <= 0x47; i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, (i << 24));
+
+ /* ParaType 0x11 - Frame Buffer Auto-Swapping and Command Regulator */
+ VIA_WRITE(VIA_REG_TRANSET, (0x00110000));
+ for (i = 0; i <= 0x20; i++)
+ VIA_WRITE(VIA_REG_TRANSPACE, (i << 24));
+
+ VIA_WRITE(VIA_REG_TRANSET, 0x00fe0000);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x4000840f);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x47000404);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x44000000);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x46000005);
+
+ /* setting Misconfig */
+ VIA_WRITE(VIA_REG_TRANSET, 0x00fe0000);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x00001004);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x08000249);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x0a0002c9);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x0b0002fb);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x0c000000);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x0d0002cb);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x0e000009);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x10000049);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x110002ff);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x12000008);
+ VIA_WRITE(VIA_REG_TRANSPACE, 0x130002db);
+}
+
+static void
+via_init_vq(struct drm_via_private *dev_priv)
+{
+ unsigned long vq_start_addr, vq_end_addr, vqlen;
+ unsigned long vqstartl, vqendl, vqstart_endh;
+ struct ttm_buffer_object *bo = dev_priv->vq.bo;
+
+ if (!bo) return;
+
+ vq_start_addr = bo->offset;
+ vq_end_addr = vq_start_addr + bo->mem.size - 1;
+ vqstartl = 0x70000000 | (vq_start_addr & 0xFFFFFF);
+ vqendl = 0x71000000 | (vq_end_addr & 0xFFFFFF);
+ vqstart_endh = 0x72000000 | ((vq_start_addr & 0xFF000000) >> 24) |
+ ((vq_end_addr & 0xFF000000) >> 16);
+ vqlen = 0x73000000 | (bo->mem.size >> 3);
+
+ VIA_WRITE(0x41c, 0x00100000);
+ VIA_WRITE(0x420, vqstart_endh);
+ VIA_WRITE(0x420, vqstartl);
+ VIA_WRITE(0x420, vqendl);
+ VIA_WRITE(0x420, vqlen);
+ VIA_WRITE(0x420, 0x74301001);
+ VIA_WRITE(0x420, 0x00000000);
+}
+
+static void
+via_init_pcie_gart_table(struct drm_via_private *dev_priv,
+ struct pci_dev *pdev)
+{
+ struct ttm_buffer_object *bo = dev_priv->gart.bo;
+ u8 value;
+
+ if (!pci_is_pcie(pdev) || !bo)
+ return;
+
+ /* enable gtt write */
+ svga_wseq_mask(VGABASE, 0x6C, 0x00, BIT(7));
+
+ /* set the base address of gart table */
+ value = (bo->offset & 0xff000) >> 12;
+ vga_wseq(VGABASE, 0x6A, value);
+
+ value = (bo->offset & 0xff000) >> 20;
+ vga_wseq(VGABASE, 0x6B, value);
+
+ value = vga_rseq(VGABASE, 0x6C);
+ value |= ((bo->offset >> 28) & 0x01);
+ vga_wseq(VGABASE, 0x6C, value);
+
+ /* flush the gtt cache */
+ svga_wseq_mask(VGABASE, 0x6F, BIT(7), BIT(7));
+
+ /* disable the gtt write */
+ svga_wseq_mask(VGABASE, 0x6C, BIT(7), BIT(7));
+}
+
+/* This function does:
+ * 1. Command buffer allocation
+ * 2. hw engine intialization:2D;3D;VQ
+ * 3. Ring Buffer mechanism setup
+ */
+void
+via_engine_init(struct drm_device *dev)
+{
+ struct drm_via_private *dev_priv = dev->dev_private;
+
+ /* initial engines */
+ via_init_2d(dev_priv, dev->pci_device);
+ via_init_3d(dev_priv);
+ via_init_vq(dev_priv);
+
+ /* pcie gart table setup */
+ via_init_pcie_gart_table(dev_priv, dev->pdev);
+}
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