From 20efabc2e80be1df79510b8be9ca004d3ce9be11 Mon Sep 17 00:00:00 2001
From: Cai Huoqing <cai.huoqing@linux.dev>
Date: Sat, 3 Dec 2022 18:22:56 +0800
Subject: drm: Remove the obsolete driver-sis

Commit 399516ab0fee ("MAINTAINERS: Add a bunch of legacy (UMS) DRM drivers")
marked sis driver obsolete 7 years ago.
And the mesa UMD of this drm driver already in deprecated list
in the link: https://docs.mesa3d.org/systems.html
Silicon Integrated Systems->drivers/gpu/drm/sis

It's time to remove this driver.

Signed-off-by: Cai Huoqing <cai.huoqing@linux.dev>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20221203102502.3185-6-cai.huoqing@linux.dev
---
 drivers/gpu/drm/sis/sis_mm.c | 363 -------------------------------------------
 1 file changed, 363 deletions(-)
 delete mode 100644 drivers/gpu/drm/sis/sis_mm.c

(limited to 'drivers/gpu/drm/sis/sis_mm.c')

diff --git a/drivers/gpu/drm/sis/sis_mm.c b/drivers/gpu/drm/sis/sis_mm.c
deleted file mode 100644
index e51d4289a3d0..000000000000
--- a/drivers/gpu/drm/sis/sis_mm.c
+++ /dev/null
@@ -1,363 +0,0 @@
-/**************************************************************************
- *
- * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA.
- * 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 COPYRIGHT HOLDERS, AUTHORS 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:
- *    Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- */
-
-#include <video/sisfb.h>
-
-#include <drm/drm_device.h>
-#include <drm/drm_file.h>
-#include <drm/sis_drm.h>
-
-#include "sis_drv.h"
-
-
-#define VIDEO_TYPE 0
-#define AGP_TYPE 1
-
-
-struct sis_memblock {
-	struct drm_mm_node mm_node;
-	struct sis_memreq req;
-	struct list_head owner_list;
-};
-
-#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
-/* fb management via fb device */
-
-#define SIS_MM_ALIGN_SHIFT 0
-#define SIS_MM_ALIGN_MASK 0
-
-#else /* CONFIG_FB_SIS[_MODULE] */
-
-#define SIS_MM_ALIGN_SHIFT 4
-#define SIS_MM_ALIGN_MASK ((1 << SIS_MM_ALIGN_SHIFT) - 1)
-
-#endif /* CONFIG_FB_SIS[_MODULE] */
-
-static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
-	drm_sis_private_t *dev_priv = dev->dev_private;
-	drm_sis_fb_t *fb = data;
-
-	mutex_lock(&dev->struct_mutex);
-	/* Unconditionally init the drm_mm, even though we don't use it when the
-	 * fb sis driver is available - make cleanup easier. */
-	drm_mm_init(&dev_priv->vram_mm, 0, fb->size >> SIS_MM_ALIGN_SHIFT);
-
-	dev_priv->vram_initialized = 1;
-	dev_priv->vram_offset = fb->offset;
-
-	mutex_unlock(&dev->struct_mutex);
-	DRM_DEBUG("offset = %lu, size = %lu\n", fb->offset, fb->size);
-
-	return 0;
-}
-
-static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
-			 void *data, int pool)
-{
-	drm_sis_private_t *dev_priv = dev->dev_private;
-	drm_sis_mem_t *mem = data;
-	int retval = 0, user_key;
-	struct sis_memblock *item;
-	struct sis_file_private *file_priv = file->driver_priv;
-	unsigned long offset;
-
-	mutex_lock(&dev->struct_mutex);
-
-	if (0 == ((pool == 0) ? dev_priv->vram_initialized :
-		      dev_priv->agp_initialized)) {
-		DRM_ERROR
-		    ("Attempt to allocate from uninitialized memory manager.\n");
-		mutex_unlock(&dev->struct_mutex);
-		return -EINVAL;
-	}
-
-	item = kzalloc(sizeof(*item), GFP_KERNEL);
-	if (!item) {
-		retval = -ENOMEM;
-		goto fail_alloc;
-	}
-
-	mem->size = (mem->size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
-	if (pool == AGP_TYPE) {
-		retval = drm_mm_insert_node(&dev_priv->agp_mm,
-					    &item->mm_node,
-					    mem->size);
-		offset = item->mm_node.start;
-	} else {
-#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
-		item->req.size = mem->size;
-		sis_malloc(&item->req);
-		if (item->req.size == 0)
-			retval = -ENOMEM;
-		offset = item->req.offset;
-#else
-		retval = drm_mm_insert_node(&dev_priv->vram_mm,
-					    &item->mm_node,
-					    mem->size);
-		offset = item->mm_node.start;
-#endif
-	}
-	if (retval)
-		goto fail_alloc;
-
-	retval = idr_alloc(&dev_priv->object_idr, item, 1, 0, GFP_KERNEL);
-	if (retval < 0)
-		goto fail_idr;
-	user_key = retval;
-
-	list_add(&item->owner_list, &file_priv->obj_list);
-	mutex_unlock(&dev->struct_mutex);
-
-	mem->offset = ((pool == 0) ?
-		      dev_priv->vram_offset : dev_priv->agp_offset) +
-	    (offset << SIS_MM_ALIGN_SHIFT);
-	mem->free = user_key;
-	mem->size = mem->size << SIS_MM_ALIGN_SHIFT;
-
-	return 0;
-
-fail_idr:
-	drm_mm_remove_node(&item->mm_node);
-fail_alloc:
-	kfree(item);
-	mutex_unlock(&dev->struct_mutex);
-
-	mem->offset = 0;
-	mem->size = 0;
-	mem->free = 0;
-
-	DRM_DEBUG("alloc %d, size = %ld, offset = %ld\n", pool, mem->size,
-		  mem->offset);
-
-	return retval;
-}
-
-static int sis_drm_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
-	drm_sis_private_t *dev_priv = dev->dev_private;
-	drm_sis_mem_t *mem = data;
-	struct sis_memblock *obj;
-
-	mutex_lock(&dev->struct_mutex);
-	obj = idr_find(&dev_priv->object_idr, mem->free);
-	if (obj == NULL) {
-		mutex_unlock(&dev->struct_mutex);
-		return -EINVAL;
-	}
-
-	idr_remove(&dev_priv->object_idr, mem->free);
-	list_del(&obj->owner_list);
-	if (drm_mm_node_allocated(&obj->mm_node))
-		drm_mm_remove_node(&obj->mm_node);
-#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
-	else
-		sis_free(obj->req.offset);
-#endif
-	kfree(obj);
-	mutex_unlock(&dev->struct_mutex);
-	DRM_DEBUG("free = 0x%lx\n", mem->free);
-
-	return 0;
-}
-
-static int sis_fb_alloc(struct drm_device *dev, void *data,
-			struct drm_file *file_priv)
-{
-	return sis_drm_alloc(dev, file_priv, data, VIDEO_TYPE);
-}
-
-static int sis_ioctl_agp_init(struct drm_device *dev, void *data,
-			      struct drm_file *file_priv)
-{
-	drm_sis_private_t *dev_priv = dev->dev_private;
-	drm_sis_agp_t *agp = data;
-	dev_priv = dev->dev_private;
-
-	mutex_lock(&dev->struct_mutex);
-	drm_mm_init(&dev_priv->agp_mm, 0, agp->size >> SIS_MM_ALIGN_SHIFT);
-
-	dev_priv->agp_initialized = 1;
-	dev_priv->agp_offset = agp->offset;
-	mutex_unlock(&dev->struct_mutex);
-
-	DRM_DEBUG("offset = %lu, size = %lu\n", agp->offset, agp->size);
-	return 0;
-}
-
-static int sis_ioctl_agp_alloc(struct drm_device *dev, void *data,
-			       struct drm_file *file_priv)
-{
-
-	return sis_drm_alloc(dev, file_priv, data, AGP_TYPE);
-}
-
-static drm_local_map_t *sis_reg_init(struct drm_device *dev)
-{
-	struct drm_map_list *entry;
-	drm_local_map_t *map;
-
-	list_for_each_entry(entry, &dev->maplist, head) {
-		map = entry->map;
-		if (!map)
-			continue;
-		if (map->type == _DRM_REGISTERS)
-			return map;
-	}
-	return NULL;
-}
-
-int sis_idle(struct drm_device *dev)
-{
-	drm_sis_private_t *dev_priv = dev->dev_private;
-	uint32_t idle_reg;
-	unsigned long end;
-	int i;
-
-	if (dev_priv->idle_fault)
-		return 0;
-
-	if (dev_priv->mmio == NULL) {
-		dev_priv->mmio = sis_reg_init(dev);
-		if (dev_priv->mmio == NULL) {
-			DRM_ERROR("Could not find register map.\n");
-			return 0;
-		}
-	}
-
-	/*
-	 * Implement a device switch here if needed
-	 */
-
-	if (dev_priv->chipset != SIS_CHIP_315)
-		return 0;
-
-	/*
-	 * Timeout after 3 seconds. We cannot use DRM_WAIT_ON here
-	 * because its polling frequency is too low.
-	 */
-
-	end = jiffies + (HZ * 3);
-
-	for (i = 0; i < 4; ++i) {
-		do {
-			idle_reg = SIS_READ(0x85cc);
-		} while (!time_after_eq(jiffies, end) &&
-			  ((idle_reg & 0x80000000) != 0x80000000));
-	}
-
-	if (time_after_eq(jiffies, end)) {
-		DRM_ERROR("Graphics engine idle timeout. "
-			  "Disabling idle check\n");
-		dev_priv->idle_fault = 1;
-	}
-
-	/*
-	 * The caller never sees an error code. It gets trapped
-	 * in libdrm.
-	 */
-
-	return 0;
-}
-
-
-void sis_lastclose(struct drm_device *dev)
-{
-	drm_sis_private_t *dev_priv = dev->dev_private;
-
-	if (!dev_priv)
-		return;
-
-	mutex_lock(&dev->struct_mutex);
-	if (dev_priv->vram_initialized) {
-		drm_mm_takedown(&dev_priv->vram_mm);
-		dev_priv->vram_initialized = 0;
-	}
-	if (dev_priv->agp_initialized) {
-		drm_mm_takedown(&dev_priv->agp_mm);
-		dev_priv->agp_initialized = 0;
-	}
-	dev_priv->mmio = NULL;
-	mutex_unlock(&dev->struct_mutex);
-}
-
-void sis_reclaim_buffers_locked(struct drm_device *dev,
-				struct drm_file *file)
-{
-	struct sis_file_private *file_priv = file->driver_priv;
-	struct sis_memblock *entry, *next;
-
-	if (!(dev->master && file->master->lock.hw_lock))
-		return;
-
-	drm_legacy_idlelock_take(&file->master->lock);
-
-	mutex_lock(&dev->struct_mutex);
-	if (list_empty(&file_priv->obj_list)) {
-		mutex_unlock(&dev->struct_mutex);
-		drm_legacy_idlelock_release(&file->master->lock);
-
-		return;
-	}
-
-	sis_idle(dev);
-
-
-	list_for_each_entry_safe(entry, next, &file_priv->obj_list,
-				 owner_list) {
-		list_del(&entry->owner_list);
-		if (drm_mm_node_allocated(&entry->mm_node))
-			drm_mm_remove_node(&entry->mm_node);
-#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
-		else
-			sis_free(entry->req.offset);
-#endif
-		kfree(entry);
-	}
-	mutex_unlock(&dev->struct_mutex);
-
-	drm_legacy_idlelock_release(&file->master->lock);
-
-	return;
-}
-
-const struct drm_ioctl_desc sis_ioctls[] = {
-	DRM_IOCTL_DEF_DRV(SIS_FB_ALLOC, sis_fb_alloc, DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(SIS_FB_FREE, sis_drm_free, DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(SIS_AGP_INIT, sis_ioctl_agp_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
-	DRM_IOCTL_DEF_DRV(SIS_AGP_ALLOC, sis_ioctl_agp_alloc, DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(SIS_AGP_FREE, sis_drm_free, DRM_AUTH),
-	DRM_IOCTL_DEF_DRV(SIS_FB_INIT, sis_fb_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
-};
-
-int sis_max_ioctl = ARRAY_SIZE(sis_ioctls);
-- 
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