1/*
  2 * Copyright (C) 2008 Maarten Maathuis.
  3 * All Rights Reserved.
  4 *
  5 * Permission is hereby granted, free of charge, to any person obtaining
  6 * a copy of this software and associated documentation files (the
  7 * "Software"), to deal in the Software without restriction, including
  8 * without limitation the rights to use, copy, modify, merge, publish,
  9 * distribute, sublicense, and/or sell copies of the Software, and to
 10 * permit persons to whom the Software is furnished to do so, subject to
 11 * the following conditions:
 12 *
 13 * The above copyright notice and this permission notice (including the
 14 * next paragraph) shall be included in all copies or substantial
 15 * portions of the Software.
 16 *
 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 24 *
 25 */
 26
 27#include "drmP.h"
 28#include "drm_mode.h"
 29
 30#define NOUVEAU_DMA_DEBUG (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO)
 31#include "nouveau_reg.h"
 32#include "nouveau_drv.h"
 33#include "nouveau_crtc.h"
 34#include "nv50_display.h"
 35
 36static void
 37nv50_cursor_show(struct nouveau_crtc *nv_crtc, bool update)
 38{
 39	struct drm_device *dev = nv_crtc->base.dev;
 40	struct drm_nouveau_private *dev_priv = dev->dev_private;
 41	struct nouveau_channel *evo = nv50_display(dev)->master;
 42	int ret;
 43
 44	NV_DEBUG_KMS(dev, "\n");
 45
 46	if (update && nv_crtc->cursor.visible)
 47		return;
 48
 49	ret = RING_SPACE(evo, (dev_priv->chipset != 0x50 ? 5 : 3) + update * 2);
 50	if (ret) {
 51		NV_ERROR(dev, "no space while unhiding cursor\n");
 52		return;
 53	}
 54
 55	if (dev_priv->chipset != 0x50) {
 56		BEGIN_RING(evo, 0, NV84_EVO_CRTC(nv_crtc->index, CURSOR_DMA), 1);
 57		OUT_RING(evo, NvEvoVRAM);
 58	}
 59	BEGIN_RING(evo, 0, NV50_EVO_CRTC(nv_crtc->index, CURSOR_CTRL), 2);
 60	OUT_RING(evo, NV50_EVO_CRTC_CURSOR_CTRL_SHOW);
 61	OUT_RING(evo, nv_crtc->cursor.offset >> 8);
 62
 63	if (update) {
 64		BEGIN_RING(evo, 0, NV50_EVO_UPDATE, 1);
 65		OUT_RING(evo, 0);
 66		FIRE_RING(evo);
 67		nv_crtc->cursor.visible = true;
 68	}
 69}
 70
 71static void
 72nv50_cursor_hide(struct nouveau_crtc *nv_crtc, bool update)
 73{
 74	struct drm_device *dev = nv_crtc->base.dev;
 75	struct drm_nouveau_private *dev_priv = dev->dev_private;
 76	struct nouveau_channel *evo = nv50_display(dev)->master;
 77	int ret;
 78
 79	NV_DEBUG_KMS(dev, "\n");
 80
 81	if (update && !nv_crtc->cursor.visible)
 82		return;
 83
 84	ret = RING_SPACE(evo, (dev_priv->chipset != 0x50 ? 5 : 3) + update * 2);
 85	if (ret) {
 86		NV_ERROR(dev, "no space while hiding cursor\n");
 87		return;
 88	}
 89	BEGIN_RING(evo, 0, NV50_EVO_CRTC(nv_crtc->index, CURSOR_CTRL), 2);
 90	OUT_RING(evo, NV50_EVO_CRTC_CURSOR_CTRL_HIDE);
 91	OUT_RING(evo, 0);
 92	if (dev_priv->chipset != 0x50) {
 93		BEGIN_RING(evo, 0, NV84_EVO_CRTC(nv_crtc->index, CURSOR_DMA), 1);
 94		OUT_RING(evo, NV84_EVO_CRTC_CURSOR_DMA_HANDLE_NONE);
 95	}
 96
 97	if (update) {
 98		BEGIN_RING(evo, 0, NV50_EVO_UPDATE, 1);
 99		OUT_RING(evo, 0);
100		FIRE_RING(evo);
101		nv_crtc->cursor.visible = false;
102	}
103}
104
105static void
106nv50_cursor_set_pos(struct nouveau_crtc *nv_crtc, int x, int y)
107{
108	struct drm_device *dev = nv_crtc->base.dev;
109
110	nv_crtc->cursor_saved_x = x; nv_crtc->cursor_saved_y = y;
111	nv_wr32(dev, NV50_PDISPLAY_CURSOR_USER_POS(nv_crtc->index),
112		((y & 0xFFFF) << 16) | (x & 0xFFFF));
113	/* Needed to make the cursor move. */
114	nv_wr32(dev, NV50_PDISPLAY_CURSOR_USER_POS_CTRL(nv_crtc->index), 0);
115}
116
117static void
118nv50_cursor_set_offset(struct nouveau_crtc *nv_crtc, uint32_t offset)
119{
120	NV_DEBUG_KMS(nv_crtc->base.dev, "\n");
121	if (offset == nv_crtc->cursor.offset)
122		return;
123
124	nv_crtc->cursor.offset = offset;
125	if (nv_crtc->cursor.visible) {
126		nv_crtc->cursor.visible = false;
127		nv_crtc->cursor.show(nv_crtc, true);
128	}
129}
130
131int
132nv50_cursor_init(struct nouveau_crtc *nv_crtc)
133{
134	nv_crtc->cursor.set_offset = nv50_cursor_set_offset;
135	nv_crtc->cursor.set_pos = nv50_cursor_set_pos;
136	nv_crtc->cursor.hide = nv50_cursor_hide;
137	nv_crtc->cursor.show = nv50_cursor_show;
138	return 0;
139}
140
141void
142nv50_cursor_fini(struct nouveau_crtc *nv_crtc)
143{
144	struct drm_device *dev = nv_crtc->base.dev;
145	int idx = nv_crtc->index;
146
147	NV_DEBUG_KMS(dev, "\n");
148
149	nv_wr32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(idx), 0);
150	if (!nv_wait(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(idx),
151		     NV50_PDISPLAY_CURSOR_CURSOR_CTRL2_STATUS, 0)) {
152		NV_ERROR(dev, "timeout: CURSOR_CTRL2_STATUS == 0\n");
153		NV_ERROR(dev, "CURSOR_CTRL2 = 0x%08x\n",
154			 nv_rd32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(idx)));
155	}
156}
157