drm: Remove the obsolete driver-via

Commit 399516ab ("MAINTAINERS: Add a bunch of legacy (UMS) DRM drivers")
marked via 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
VIA Unichrome->drivers/gpu/drm/via

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/20221203102502.3185-8-cai.huoqing@linux.dev

drivers/gpu/drm/Kconfig

@@ -398,13 +398,6 @@ menuconfig DRM_LEGACY
 
 if DRM_LEGACY
 
-config DRM_VIA
-	tristate "Via unichrome video cards"
-	depends on DRM && PCI
-	help
-	  Choose this option if you have a Via unichrome or compatible video
-	  chipset. If M is selected the module will be called via.
-
 endif # DRM_LEGACY
 
 config DRM_EXPORT_FOR_TESTS

drivers/gpu/drm/Makefile

@@ -141,7 +141,6 @@ obj-$(CONFIG_DRM_MGAG200) += mgag200/
 obj-$(CONFIG_DRM_V3D)  += v3d/
 obj-$(CONFIG_DRM_VC4)  += vc4/
 obj-$(CONFIG_DRM_VMWGFX)+= vmwgfx/
-obj-$(CONFIG_DRM_VIA)	+=via/
 obj-$(CONFIG_DRM_VGEM)	+= vgem/
 obj-$(CONFIG_DRM_VKMS)	+= vkms/
 obj-$(CONFIG_DRM_NOUVEAU) +=nouveau/

drivers/gpu/drm/via/Makefile

-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Makefile for the drm device driver.  This driver provides support for the
-# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
-
-via-y    := via_dri1.o
-
-obj-$(CONFIG_DRM_VIA)	+=via.o

include/uapi/drm/via_drm.h

-/*
- * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
- * Copyright 2001-2003 S3 Graphics, Inc. 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
- * VIA, S3 GRAPHICS, 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.
- */
-#ifndef _VIA_DRM_H_
-#define _VIA_DRM_H_
-
-#include "drm.h"
-
-#if defined(__cplusplus)
-extern "C" {
-#endif
-
-/* WARNING: These defines must be the same as what the Xserver uses.
- * if you change them, you must change the defines in the Xserver.
- */
-
-#ifndef _VIA_DEFINES_
-#define _VIA_DEFINES_
-
-
-#define VIA_NR_SAREA_CLIPRECTS		8
-#define VIA_NR_XVMC_PORTS               10
-#define VIA_NR_XVMC_LOCKS               5
-#define VIA_MAX_CACHELINE_SIZE          64
-#define XVMCLOCKPTR(saPriv,lockNo)					\
-	((volatile struct drm_hw_lock *)(((((unsigned long) (saPriv)->XvMCLockArea) + \
-				      (VIA_MAX_CACHELINE_SIZE - 1)) &	\
-				     ~(VIA_MAX_CACHELINE_SIZE - 1)) +	\
-				    VIA_MAX_CACHELINE_SIZE*(lockNo)))
-
-/* Each region is a minimum of 64k, and there are at most 64 of them.
- */
-#define VIA_NR_TEX_REGIONS 64
-#define VIA_LOG_MIN_TEX_REGION_SIZE 16
-#endif
-
-#define VIA_UPLOAD_TEX0IMAGE  0x1	/* handled clientside */
-#define VIA_UPLOAD_TEX1IMAGE  0x2	/* handled clientside */
-#define VIA_UPLOAD_CTX        0x4
-#define VIA_UPLOAD_BUFFERS    0x8
-#define VIA_UPLOAD_TEX0       0x10
-#define VIA_UPLOAD_TEX1       0x20
-#define VIA_UPLOAD_CLIPRECTS  0x40
-#define VIA_UPLOAD_ALL        0xff
-
-/* VIA specific ioctls */
-#define DRM_VIA_ALLOCMEM	0x00
-#define DRM_VIA_FREEMEM	        0x01
-#define DRM_VIA_AGP_INIT	0x02
-#define DRM_VIA_FB_INIT	        0x03
-#define DRM_VIA_MAP_INIT	0x04
-#define DRM_VIA_DEC_FUTEX       0x05
-#define NOT_USED
-#define DRM_VIA_DMA_INIT	0x07
-#define DRM_VIA_CMDBUFFER	0x08
-#define DRM_VIA_FLUSH	        0x09
-#define DRM_VIA_PCICMD	        0x0a
-#define DRM_VIA_CMDBUF_SIZE	0x0b
-#define NOT_USED
-#define DRM_VIA_WAIT_IRQ        0x0d
-#define DRM_VIA_DMA_BLIT        0x0e
-#define DRM_VIA_BLIT_SYNC       0x0f
-
-#define DRM_IOCTL_VIA_ALLOCMEM	  DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_ALLOCMEM, drm_via_mem_t)
-#define DRM_IOCTL_VIA_FREEMEM	  DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_FREEMEM, drm_via_mem_t)
-#define DRM_IOCTL_VIA_AGP_INIT	  DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_AGP_INIT, drm_via_agp_t)
-#define DRM_IOCTL_VIA_FB_INIT	  DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_FB_INIT, drm_via_fb_t)
-#define DRM_IOCTL_VIA_MAP_INIT	  DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_MAP_INIT, drm_via_init_t)
-#define DRM_IOCTL_VIA_DEC_FUTEX   DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_DEC_FUTEX, drm_via_futex_t)
-#define DRM_IOCTL_VIA_DMA_INIT	  DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_DMA_INIT, drm_via_dma_init_t)
-#define DRM_IOCTL_VIA_CMDBUFFER	  DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_CMDBUFFER, drm_via_cmdbuffer_t)
-#define DRM_IOCTL_VIA_FLUSH	  DRM_IO(  DRM_COMMAND_BASE + DRM_VIA_FLUSH)
-#define DRM_IOCTL_VIA_PCICMD	  DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_PCICMD, drm_via_cmdbuffer_t)
-#define DRM_IOCTL_VIA_CMDBUF_SIZE DRM_IOWR( DRM_COMMAND_BASE + DRM_VIA_CMDBUF_SIZE, \
-					    drm_via_cmdbuf_size_t)
-#define DRM_IOCTL_VIA_WAIT_IRQ    DRM_IOWR( DRM_COMMAND_BASE + DRM_VIA_WAIT_IRQ, drm_via_irqwait_t)
-#define DRM_IOCTL_VIA_DMA_BLIT    DRM_IOW(DRM_COMMAND_BASE + DRM_VIA_DMA_BLIT, drm_via_dmablit_t)
-#define DRM_IOCTL_VIA_BLIT_SYNC   DRM_IOW(DRM_COMMAND_BASE + DRM_VIA_BLIT_SYNC, drm_via_blitsync_t)
-
-/* Indices into buf.Setup where various bits of state are mirrored per
- * context and per buffer.  These can be fired at the card as a unit,
- * or in a piecewise fashion as required.
- */
-
-#define VIA_TEX_SETUP_SIZE 8
-
-/* Flags for clear ioctl
- */
-#define VIA_FRONT   0x1
-#define VIA_BACK    0x2
-#define VIA_DEPTH   0x4
-#define VIA_STENCIL 0x8
-#define VIA_MEM_VIDEO   0	/* matches drm constant */
-#define VIA_MEM_AGP     1	/* matches drm constant */
-#define VIA_MEM_SYSTEM  2
-#define VIA_MEM_MIXED   3
-#define VIA_MEM_UNKNOWN 4
-
-typedef struct {
-	__u32 offset;
-	__u32 size;
-} drm_via_agp_t;
-
-typedef struct {
-	__u32 offset;
-	__u32 size;
-} drm_via_fb_t;
-
-typedef struct {
-	__u32 context;
-	__u32 type;
-	__u32 size;
-	unsigned long index;
-	unsigned long offset;
-} drm_via_mem_t;
-
-typedef struct _drm_via_init {
-	enum {
-		VIA_INIT_MAP = 0x01,
-		VIA_CLEANUP_MAP = 0x02
-	} func;
-
-	unsigned long sarea_priv_offset;
-	unsigned long fb_offset;
-	unsigned long mmio_offset;
-	unsigned long agpAddr;
-} drm_via_init_t;
-
-typedef struct _drm_via_futex {
-	enum {
-		VIA_FUTEX_WAIT = 0x00,
-		VIA_FUTEX_WAKE = 0X01
-	} func;
-	__u32 ms;
-	__u32 lock;
-	__u32 val;
-} drm_via_futex_t;
-
-typedef struct _drm_via_dma_init {
-	enum {
-		VIA_INIT_DMA = 0x01,
-		VIA_CLEANUP_DMA = 0x02,
-		VIA_DMA_INITIALIZED = 0x03
-	} func;
-
-	unsigned long offset;
-	unsigned long size;
-	unsigned long reg_pause_addr;
-} drm_via_dma_init_t;
-
-typedef struct _drm_via_cmdbuffer {
-	char __user *buf;
-	unsigned long size;
-} drm_via_cmdbuffer_t;
-
-/* Warning: If you change the SAREA structure you must change the Xserver
- * structure as well */
-
-typedef struct _drm_via_tex_region {
-	unsigned char next, prev;	/* indices to form a circular LRU  */
-	unsigned char inUse;	/* owned by a client, or free? */
-	int age;		/* tracked by clients to update local LRU's */
-} drm_via_tex_region_t;
-
-typedef struct _drm_via_sarea {
-	unsigned int dirty;
-	unsigned int nbox;
-	struct drm_clip_rect boxes[VIA_NR_SAREA_CLIPRECTS];
-	drm_via_tex_region_t texList[VIA_NR_TEX_REGIONS + 1];
-	int texAge;		/* last time texture was uploaded */
-	int ctxOwner;		/* last context to upload state */
-	int vertexPrim;
-
-	/*
-	 * Below is for XvMC.
-	 * We want the lock integers alone on, and aligned to, a cache line.
-	 * Therefore this somewhat strange construct.
-	 */
-
-	char XvMCLockArea[VIA_MAX_CACHELINE_SIZE * (VIA_NR_XVMC_LOCKS + 1)];
-
-	unsigned int XvMCDisplaying[VIA_NR_XVMC_PORTS];
-	unsigned int XvMCSubPicOn[VIA_NR_XVMC_PORTS];
-	unsigned int XvMCCtxNoGrabbed;	/* Last context to hold decoder */
-
-	/* Used by the 3d driver only at this point, for pageflipping:
-	 */
-	unsigned int pfCurrentOffset;
-} drm_via_sarea_t;
-
-typedef struct _drm_via_cmdbuf_size {
-	enum {
-		VIA_CMDBUF_SPACE = 0x01,
-		VIA_CMDBUF_LAG = 0x02
-	} func;
-	int wait;
-	__u32 size;
-} drm_via_cmdbuf_size_t;
-
-typedef enum {
-	VIA_IRQ_ABSOLUTE = 0x0,
-	VIA_IRQ_RELATIVE = 0x1,
-	VIA_IRQ_SIGNAL = 0x10000000,
-	VIA_IRQ_FORCE_SEQUENCE = 0x20000000
-} via_irq_seq_type_t;
-
-#define VIA_IRQ_FLAGS_MASK 0xF0000000
-
-enum drm_via_irqs {
-	drm_via_irq_hqv0 = 0,
-	drm_via_irq_hqv1,
-	drm_via_irq_dma0_dd,
-	drm_via_irq_dma0_td,
-	drm_via_irq_dma1_dd,
-	drm_via_irq_dma1_td,
-	drm_via_irq_num
-};
-
-struct drm_via_wait_irq_request {
-	unsigned irq;
-	via_irq_seq_type_t type;
-	__u32 sequence;
-	__u32 signal;
-};
-
-typedef union drm_via_irqwait {
-	struct drm_via_wait_irq_request request;
-	struct drm_wait_vblank_reply reply;
-} drm_via_irqwait_t;
-
-typedef struct drm_via_blitsync {
-	__u32 sync_handle;
-	unsigned engine;
-} drm_via_blitsync_t;
-
-/* - * Below,"flags" is currently unused but will be used for possible future
- * extensions like kernel space bounce buffers for bad alignments and
- * blit engine busy-wait polling for better latency in the absence of
- * interrupts.
- */
-
-typedef struct drm_via_dmablit {
-	__u32 num_lines;
-	__u32 line_length;
-
-	__u32 fb_addr;
-	__u32 fb_stride;
-
-	unsigned char *mem_addr;
-	__u32 mem_stride;
-
-	__u32 flags;
-	int to_fb;
-
-	drm_via_blitsync_t sync;
-} drm_via_dmablit_t;
-
-#if defined(__cplusplus)
-}
-#endif
-
-#endif				/* _VIA_DRM_H_ */