Module Name:    src
Committed By:   christos
Date:           Tue Aug 20 09:32:21 UTC 2019

Modified Files:
        src/sys/compat/netbsd32: files.netbsd32 netbsd32_ioctl.c
            netbsd32_ioctl.h
Added Files:
        src/sys/compat/netbsd32: netbsd32_drm.c

Log Message:
compat32 drm ioctl support from Surya Shankar at GSoC 2019


To generate a diff of this commit:
cvs rdiff -u -r1.45 -r1.46 src/sys/compat/netbsd32/files.netbsd32
cvs rdiff -u -r0 -r1.1 src/sys/compat/netbsd32/netbsd32_drm.c
cvs rdiff -u -r1.103 -r1.104 src/sys/compat/netbsd32/netbsd32_ioctl.c
cvs rdiff -u -r1.67 -r1.68 src/sys/compat/netbsd32/netbsd32_ioctl.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sys/compat/netbsd32/files.netbsd32
diff -u src/sys/compat/netbsd32/files.netbsd32:1.45 src/sys/compat/netbsd32/files.netbsd32:1.46
--- src/sys/compat/netbsd32/files.netbsd32:1.45	Mon Jun 17 21:36:50 2019
+++ src/sys/compat/netbsd32/files.netbsd32	Tue Aug 20 05:32:21 2019
@@ -1,4 +1,4 @@
-#	$NetBSD: files.netbsd32,v 1.45 2019/06/18 01:36:50 christos Exp $
+#	$NetBSD: files.netbsd32,v 1.46 2019/08/20 09:32:21 christos Exp $
 #
 # config file description for machine-independent netbsd32 compat code.
 # included by ports that need it.
@@ -7,10 +7,14 @@
 # own file lists.
 
 define	compat_netbsd32
+
+makeoptions	drmkms	CPPFLAGS+="-DNETBSD32_DRMKMS"
+
 file	compat/netbsd32/netbsd32_core.c		compat_netbsd32 & coredump
 file	compat/netbsd32/netbsd32_exec_elf32.c	compat_netbsd32 & exec_elf32
 file	compat/netbsd32/netbsd32_exec_aout.c	compat_netbsd32 & exec_aout
 file	compat/netbsd32/netbsd32_netbsd.c	compat_netbsd32
+file	compat/netbsd32/netbsd32_drm.c		compat_netbsd32 & drmkms
 file	compat/netbsd32/netbsd32_event.c	compat_netbsd32
 file	compat/netbsd32/netbsd32_execve.c	compat_netbsd32
 file	compat/netbsd32/netbsd32_fd.c		compat_netbsd32

Index: src/sys/compat/netbsd32/netbsd32_ioctl.c
diff -u src/sys/compat/netbsd32/netbsd32_ioctl.c:1.103 src/sys/compat/netbsd32/netbsd32_ioctl.c:1.104
--- src/sys/compat/netbsd32/netbsd32_ioctl.c:1.103	Fri May 17 03:37:12 2019
+++ src/sys/compat/netbsd32/netbsd32_ioctl.c	Tue Aug 20 05:32:21 2019
@@ -1,4 +1,4 @@
-/*	$NetBSD: netbsd32_ioctl.c,v 1.103 2019/05/17 07:37:12 msaitoh Exp $	*/
+/*	$NetBSD: netbsd32_ioctl.c,v 1.104 2019/08/20 09:32:21 christos Exp $	*/
 
 /*
  * Copyright (c) 1998, 2001 Matthew R. Green
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: netbsd32_ioctl.c,v 1.103 2019/05/17 07:37:12 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: netbsd32_ioctl.c,v 1.104 2019/08/20 09:32:21 christos Exp $");
 
 #if defined(_KERNEL_OPT)
 #include "opt_ntp.h"
@@ -1517,6 +1517,12 @@ netbsd32_ioctl(struct lwp *l,
 		IOCTL_STRUCT_CONV_TO(DIOCLWEDGES, dkwedge_list);
 
 	default:
+#ifdef NETBSD32_DRMKMS
+		if (IOCGROUP(com) == 'd') {
+			error = netbsd32_drm_ioctl(fp, com, data32, l);
+			break;
+		}
+#endif
 #ifdef NETBSD32_MD_IOCTL
 		error = netbsd32_md_ioctl(fp, com, data32, l);
 #else

Index: src/sys/compat/netbsd32/netbsd32_ioctl.h
diff -u src/sys/compat/netbsd32/netbsd32_ioctl.h:1.67 src/sys/compat/netbsd32/netbsd32_ioctl.h:1.68
--- src/sys/compat/netbsd32/netbsd32_ioctl.h:1.67	Fri May 17 03:37:12 2019
+++ src/sys/compat/netbsd32/netbsd32_ioctl.h	Tue Aug 20 05:32:21 2019
@@ -1,4 +1,4 @@
-/*	$NetBSD: netbsd32_ioctl.h,v 1.67 2019/05/17 07:37:12 msaitoh Exp $	*/
+/*	$NetBSD: netbsd32_ioctl.h,v 1.68 2019/08/20 09:32:21 christos Exp $	*/
 
 /*
  * Copyright (c) 1998, 2001 Matthew R. Green
@@ -36,6 +36,9 @@
 #include <dev/vndvar.h>
 
 #include <dev/wscons/wsconsio.h>
+#include <net/route.h>
+#include <netinet/in.h>
+#include <netinet/ip_mroute.h>
 #include <net80211/ieee80211_ioctl.h>
 
 /* we define some handy macros here... */
@@ -624,3 +627,5 @@ struct netbsd32_disk_strategy {
 
 #define DIOCGSTRATEGY32		_IOR('d', 125, struct netbsd32_disk_strategy)
 #define DIOCSSTRATEGY32		_IOW('d', 126, struct netbsd32_disk_strategy)
+
+int	netbsd32_drm_ioctl(struct file *, unsigned long, void *, struct lwp *);

Added files:

Index: src/sys/compat/netbsd32/netbsd32_drm.c
diff -u /dev/null src/sys/compat/netbsd32/netbsd32_drm.c:1.1
--- /dev/null	Tue Aug 20 05:32:21 2019
+++ src/sys/compat/netbsd32/netbsd32_drm.c	Tue Aug 20 05:32:21 2019
@@ -0,0 +1,974 @@
+/*	$NetBSD: netbsd32_drm.c,v 1.1 2019/08/20 09:32:21 christos Exp $ */
+
+/*
+ * This code was written by Surya Shankar for GSoC 2019.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: netbsd32_drm.c,v 1.1 2019/08/20 09:32:21 christos Exp $");
+
+#include <compat/netbsd32/netbsd32.h>
+#include <compat/netbsd32/netbsd32_ioctl.h>
+
+#include <linux/types.h>
+#include <drm/drmP.h>
+
+#define DRM_IOCTL_VERSION32		DRM_IOWR(0x00, drm_version32_t)
+#define DRM_IOCTL_GET_UNIQUE32		DRM_IOWR(0x01, drm_unique32_t)
+#define DRM_IOCTL_GET_MAP32		DRM_IOWR(0x04, drm_map32_t)
+#define DRM_IOCTL_GET_CLIENT32		DRM_IOWR(0x05, drm_client32_t)
+#define DRM_IOCTL_GET_STATS32		DRM_IOR( 0x06, drm_stats32_t)
+
+#define DRM_IOCTL_SET_UNIQUE32		DRM_IOW( 0x10, drm_unique32_t)
+#define DRM_IOCTL_ADD_MAP32		DRM_IOWR(0x15, drm_map32_t)
+#define DRM_IOCTL_ADD_BUFS32		DRM_IOWR(0x16, drm_buf_desc32_t)
+#define DRM_IOCTL_MARK_BUFS32		DRM_IOW( 0x17, drm_buf_desc32_t)
+#define DRM_IOCTL_INFO_BUFS32		DRM_IOWR(0x18, drm_buf_info32_t)
+#define DRM_IOCTL_MAP_BUFS32		DRM_IOWR(0x19, drm_buf_map32_t)
+#define DRM_IOCTL_FREE_BUFS32		DRM_IOW( 0x1a, drm_buf_free32_t)
+
+#define DRM_IOCTL_RM_MAP32		DRM_IOW( 0x1b, drm_map32_t)
+
+#define DRM_IOCTL_SET_SAREA_CTX32	DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
+#define DRM_IOCTL_GET_SAREA_CTX32	DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
+
+#define DRM_IOCTL_RES_CTX32		DRM_IOWR(0x26, drm_ctx_res32_t)
+#define DRM_IOCTL_DMA32			DRM_IOWR(0x29, drm_dma32_t)
+
+#define DRM_IOCTL_AGP_ENABLE32		DRM_IOW( 0x32, drm_agp_mode32_t)
+#define DRM_IOCTL_AGP_INFO32		DRM_IOR( 0x33, drm_agp_info32_t)
+#define DRM_IOCTL_AGP_ALLOC32		DRM_IOWR(0x34, drm_agp_buffer32_t)
+#define DRM_IOCTL_AGP_FREE32		DRM_IOW( 0x35, drm_agp_buffer32_t)
+#define DRM_IOCTL_AGP_BIND32		DRM_IOW( 0x36, drm_agp_binding32_t)
+#define DRM_IOCTL_AGP_UNBIND32		DRM_IOW( 0x37, drm_agp_binding32_t)
+
+#define DRM_IOCTL_SG_ALLOC32		DRM_IOW( 0x38, drm_scatter_gather32_t)
+#define DRM_IOCTL_SG_FREE32		DRM_IOW( 0x39, drm_scatter_gather32_t)
+
+#define DRM_IOCTL_UPDATE_DRAW32		DRM_IOW( 0x3f, drm_update_draw32_t)
+
+#define DRM_IOCTL_WAIT_VBLANK32		DRM_IOWR(0x3a, drm_wait_vblank32_t)
+
+#define DRM_IOCTL_MODE_ADDFB232		DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
+
+// Compat DRM Version Implementation
+
+typedef struct {
+	int version_major;		/**< Major version */
+	int version_minor;		/**< Minor version */
+	int version_patchlevel;		/**< Patch level */
+	uint32_t name_len;		/**< Length of name buffer */
+	netbsd32_pointer_t name;	/**< Name of driver */
+	uint32_t date_len;		/**< Length of date buffer */
+	netbsd32_pointer_t date;	/**< User-space buffer to hold date */
+	uint32_t desc_len;		/**< Length of desc buffer */
+	netbsd32_pointer_t desc;	/**< User-space buffer to hold desc */
+} drm_version32_t;
+
+static int
+compat_drm_version(struct file *file, void *arg)
+{
+	drm_version32_t v32;
+	struct drm_version v64;
+	int error;
+
+	if ((error = copyin(&v32, arg, sizeof(v32))) != 0)
+		return error;
+
+	v64.name_len = v32.name_len;
+	v64.name = NETBSD32PTR64(v32.name);
+	v64.date_len = v32.date_len;
+	v64.date = NETBSD32PTR64(v32.date);
+	v64.desc_len = v32.desc_len;
+	v64.desc = NETBSD32PTR64(v32.desc);
+
+	error = drm_ioctl(file, DRM_IOCTL_VERSION, &v64);
+	if (error)
+		return error;
+
+	v32.version_major = v64.version_major;
+	v32.version_minor = v64.version_minor;
+	v32.version_patchlevel = v64.version_patchlevel;
+	/* strings have already been copied in place */
+	v32.name_len = v64.name_len;
+	v32.date_len = v64.date_len;
+	v32.desc_len = v64.desc_len;
+
+	return copyout(arg, &v32, sizeof(v32));
+}
+
+typedef struct drm_unique32 {
+	uint32_t unique_len; 
+	netbsd32_pointer_t unique;    
+} drm_unique32_t;
+
+static int
+compat_drm_getunique(struct file *file, void *arg)
+{
+	drm_unique32_t uq32;
+	struct drm_unique uq64;
+	int error;
+
+	if ((error = copyin(&uq32, arg, sizeof(uq32))) != 0)
+		return error;
+
+	uq64.unique_len = uq32.unique_len;
+	uq64.unique = NETBSD32PTR64(uq32.unique);
+
+	error = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, &uq64);
+	if (error)
+		return error;
+
+	//unique should already be copied
+	uq32.unique_len = uq64.unique_len;
+
+	if ((error = copyout(arg, &uq32, sizeof(uq32))) != 0)
+		return error;
+
+	return 0;
+}
+
+static int
+compat_drm_setunique(struct file *file, void *arg)
+{
+	drm_unique32_t uq32;
+	struct drm_unique uq64;
+	int error;
+
+	if ((error = copyin(&uq32, arg, sizeof(uq32))) != 0)
+		return error;
+
+	uq64.unique_len = uq32.unique_len;
+	uq64.unique = NETBSD32PTR64(uq32.unique);
+	
+	error = drm_ioctl(file, DRM_IOCTL_SET_UNIQUE, &uq64);
+	if (error)
+		return error;
+
+	// XXX: do we need copyout and copying the fields here?
+	uq32.unique_len = uq64.unique_len;
+	NETBSD32PTR32(uq32.unique, uq64.unique);
+
+	return error;
+}
+
+typedef struct drm_map32 {
+	uint32_t offset;	  /**< Req. physical address (0 for SAREA) */
+	uint32_t size;		  /**< Requested physical size (bytes) */
+	enum drm_map_type type;	  /**< Type of memory to map */
+	enum drm_map_flags flags; /**< Flags */
+	netbsd32_pointer_t handle;/**< User-space: "Handle" to pass to mmap() */
+	int mtrr;		  /**< MTRR slot used */
+} drm_map32_t;
+
+static void
+map32to64(struct drm_map *m64, const drm_map32_t *m32)
+{
+	m64->offset = m32->offset;
+	m64->size = m32->size;
+	m64->type = m32->type;
+	m64->flags = m32->flags;
+	m64->handle = NETBSD32PTR64(m32->handle);
+	m64->mtrr = m32->mtrr;
+}
+
+static void
+map64to32(drm_map32_t *m32, const struct drm_map *m64)
+{
+	m32->offset = m64->offset;
+	m32->size = m64->size;
+	m32->type = m64->type;
+	m32->flags = m64->flags;
+	NETBSD32PTR32(m32->handle, m64->handle);
+	m32->mtrr = m64->mtrr;
+}
+
+static int
+compat_drm_getmap(struct file *file, void *arg)
+{
+	drm_map32_t m32;
+	struct drm_map m64;
+	int error;
+
+	if ((error = copyin(&m32, arg, sizeof(m32))) != 0)
+		return error;
+
+	map32to64(&m64, &m32);
+
+	error = drm_ioctl(file, DRM_IOCTL_GET_MAP, &m64);
+	if (error)
+		return error;
+
+	map64to32(&m32, &m64);
+
+	return copyout(arg, &m32, sizeof(m32));
+}
+
+static int
+compat_drm_addmap(struct file *file, void *arg)
+{
+	drm_map32_t m32;
+	struct drm_map m64;
+	int error;
+
+	if ((error = copyin(&m32, arg, sizeof(m32))) != 0)
+		return error;
+
+	map32to64(&m64, &m32);
+
+	error = drm_ioctl(file, DRM_IOCTL_ADD_MAP, &m64);
+	if (error)
+		return error;
+	
+	map64to32(&m32, &m64);
+
+	return copyout(arg, &m32, sizeof(m32));
+}
+
+
+static int
+compat_drm_rmmap(struct file *file, void *arg)
+{
+	drm_map32_t m32;
+	struct drm_map m64;
+	int error;
+	if ((error = copyin(&m32, arg, sizeof(m32))) != 0)
+		return error;
+
+	map32to64(&m64, &m32);
+
+	error = drm_ioctl(file, DRM_IOCTL_RM_MAP, &m64);
+	if (error)
+		return error;
+	
+	map64to32(&m32, &m64);
+
+	return copyout(arg, &m32, sizeof(m32));
+}
+
+typedef struct drm_client32 {
+	int idx;	/**< Which client desired? */
+	int auth;	/**< Is client authenticated? */
+	uint32_t pid;	/**< Process ID */
+	uint32_t uid;	/**< User ID */
+	uint32_t magic; /**< Magic */
+	uint32_t iocs;	/**< Ioctl count */
+} drm_client32_t;
+
+static void
+client32to64(struct drm_client *c64, const drm_client32_t *c32)
+{
+	c64->idx = c32->idx;
+	c64->auth = c32->auth;
+	c64->pid = c32->pid;
+	c64->uid = c32->uid;
+	c64->iocs = c64->iocs;
+}
+
+static void 
+client64to32(drm_client32_t *c32, const struct drm_client *c64)
+{
+	c32->idx = c64->idx;
+	c32->auth = c64->auth;
+	c32->pid = c64->pid;
+	c32->uid = c64->uid;
+	c32->iocs = c64->iocs;
+}
+static int 
+compat_drm_getclient(struct file *file, void *arg)
+{
+	drm_client32_t c32;
+	struct drm_client c64;
+	int error;
+	
+	if ((error = copyin(&c32, arg, sizeof(c32))) != 0)
+		return error;
+
+	client32to64(&c64, &c32);
+
+	error = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, &c64);
+	if (error)
+		return error;
+
+	client64to32(&c32, &c64);
+
+	return copyout(arg, &c32, sizeof(c32));
+}
+
+typedef struct drm_stats32 {
+	uint32_t count;
+	struct {
+		uint32_t value;
+		enum drm_stat_type type;
+	} data[15];
+} drm_stats32_t;
+
+static int 
+compat_drm_getstats(struct file *file, void *arg)
+{
+	drm_stats32_t st32;
+	struct drm_stats st64;
+	int error;
+
+	if ((error = copyin(&st32, arg, sizeof(st32))) != 0)
+		return error;
+
+	st64.count = st32.count;
+
+	error = drm_ioctl(file, DRM_IOCTL_GET_STATS, &st64);
+	if (error)
+		return error;
+
+	// XXX: or does that need to be count?
+	for (int i = 0; i < __arraycount(st64.data); ++i) {
+		st64.data[i].value = st32.data[i].value;
+		st64.data[i].type = st32.data[i].type;
+	}
+
+	return copyout(arg, &st32, sizeof(s32));
+}
+
+typedef struct drm_buf_desc32 {
+	int count;		 /**< Number of buffers of this size */
+	int size;		 /**< Size in bytes */
+	int low_mark;		 /**< Low water mark */
+	int high_mark;		 /**< High water mark */
+	int flags;
+	netbsd32_pointer_t agp_start;
+				/**< Start address in the AGP aperture */
+} drm_buf_desc32_t;
+
+static int 
+compat_drm_addbufs(struct file *file, void *arg)
+{
+	drm_buf_desc32_t buf32;
+	struct drm_buf_desc buf64;
+	int error;
+
+	if ((error = copyin(&buf32, arg, sizeof(buf32))) != 0)
+		return error;
+
+	// XXX: assign 32->64
+	buf64.agp_start = (unsigned long)NETBSD32PTR64(buf32.agp_start);
+
+	error = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, &buf64);
+	if (error)
+		return error;
+
+	// XXX assign 64->32
+	NETBSD32PTR32(buf32.agp_start, (void *)buf64.agp_start);
+
+	return copyout(&buf32, arg, sizeof(buf32));
+}
+
+static int 
+compat_drm_markbufs(struct file *file, void *arg)
+{
+	drm_buf_desc32_t b32;
+	struct drm_buf_desc b64;
+	int error;
+
+	if ((error = copyin(&b32, arg, sizeof(b32))) != 0)
+		return error;
+
+	b64.size = b32.size;
+	b64.low_mark = b32.low_mark;
+	b64.high_mark = b32.high_mark; 
+	//XXX: more stuff?
+
+	return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, &b64);
+}
+
+typedef struct drm_buf_info32 {
+	int count;		 /**< Entries in list */
+	netbsd32_pointer_t list;
+} drm_buf_info32_t;
+
+typedef struct drm_buf_pub32 {
+	int idx;		 /**< Index into the master buffer list */
+	int total;		 /**< Buffer size */
+	int used;		 /**< Amount of buffer in use (for DMA) */
+	uint32_t address;	 /**< Address of buffer */
+} drm_buf_pub32_t;
+
+typedef struct drm_buf_map32 {
+	int count;		 /**< Length of the buffer list */
+	uint32_t virtual;	 /**< Mmap'd area in user-virtual */
+	netbsd32_pointer_t list; /**< Buffer information */
+} drm_buf_map32_t;
+
+
+typedef struct drm_buf_free32 {
+	int count;
+	netbsd32_pointer_t list;
+} drm_buf_free32_t;
+
+static int 
+compat_drm_freebufs(struct file *file, void *arg)
+{
+	drm_buf_free32_t req32;
+	struct drm_buf_free req64;
+	int error;
+
+	if ((error = copyin(&req32, arg, sizeof(req32))) != 0)
+		return error;
+
+	req64.count = req32.count;
+	req64.list = NETBSD32PTR64(req32.list);
+
+	return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, &req64);
+}
+
+typedef struct drm_ctx_priv_map32 {
+	unsigned int ctx_id;		 /**< Context requesting private mapping */
+	netbsd32_pointer_t handle;	 /**< Handle of map */
+} drm_ctx_priv_map32_t;
+
+static int 
+compat_drm_setsareactx(struct file *file, void *arg)
+{
+	drm_ctx_priv_map32_t req32;
+	struct drm_ctx_priv_map req64;
+	int error;
+
+	if ((error = copyin(&req32, arg, sizeof(req32))) != 0)
+		return error;
+
+	req64.ctx_id = req32.ctx_id;
+	req64.handle = NETBSD32PTR64(req32.handle);
+
+	error = drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, &req64);
+	if(error)
+		return error;
+	
+	req32.ctx_id = req64.ctx_id;
+	NETBSD32PTR32(req32.handle, req64.handle);
+
+	return 0;	
+}
+
+static int 
+compat_drm_getsareactx(struct file *file, void *arg)
+{
+	struct drm_ctx_priv_map req64;
+	drm_ctx_priv_map32_t req32;
+	int error;
+
+	if ((error = copyin(&req32, arg, sizeof(req32))) != 0)
+		return error;
+
+	req64.ctx_id = req32.ctx_id;
+
+	error = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, &req64);
+	if (error)
+		return error;
+
+	NETBSD32PTR32(req32.handle, req64.handle);
+	// XXX: missing copyout?
+
+	return copyout(arg, &req32, sizeof(req32));
+}
+
+typedef struct drm_ctx_res32 {
+	int count;
+	netbsd32_pointer_t contexts;
+} drm_ctx_res32_t;
+
+static int 
+compat_drm_resctx(struct file *file, void *arg)
+{
+	drm_ctx_res32_t res32;
+	struct drm_ctx_res res64;
+	int error;
+
+	if ((error = copyin(&res32, arg, sizeof(res32))) != 0)
+		return error;
+
+	res64.count = res32.count;
+	res64.contexts = NETBSD32PTR64(res32.contexts);
+
+	error = drm_ioctl(file, DRM_IOCTL_RES_CTX, &res64);
+	if (error)
+		return error;
+
+	res32.count = res64.count;
+	NETBSD32PTR32(res32.contexts, res64.contexts);
+	/* XXX: missing copyout */
+
+	return copyout(arg, &res32, sizeof(res32));
+}
+
+typedef struct drm_dma32 {
+	int context;			  /**< Context handle */
+	int send_count;			  /**< Number of buffers to send */
+	netbsd32_pointer_t send_indices;  /**< List of handles to buffers */
+	netbsd32_pointer_t send_sizes;	  /**< Lengths of data to send */
+	enum drm_dma_flags flags;	  /**< Flags */
+	netbsd32_pointer_t request_count; /**< Number of buffers requested */
+	int request_size;		  /**< Desired size for buffers */
+	netbsd32_pointer_t request_indices; /**< Buffer information */
+	netbsd32_pointer_t request_sizes;
+	int granted_count;		  /**< Number of buffers granted */
+} drm_dma32_t;
+
+static void 
+dma64to32(drm_dma32_t *d32, const struct drm_dma *d64)
+{
+	d32->send_count = d64->send_count;
+	NETBSD32PTR32(d32->send_indices, d64->send_indices);
+	NETBSD32PTR32(d32->send_sizes, d64->send_sizes);
+	d32->flags = d64->flags;
+	NETBSD32PTR32(d32->request_count, (void *)(long)d64->request_count);
+	NETBSD32PTR32(d32->request_indices, d64->request_indices);
+	NETBSD32PTR32(d32->request_sizes, d64->request_sizes);
+
+}
+
+static void 
+dma32to64(struct drm_dma *d64, const drm_dma32_t *d32)
+{
+	d64->request_size = d32->request_size;
+	d64->granted_count = d32->granted_count;
+}
+
+static int 
+compat_drm_dma(struct file *file, void *arg)
+{
+	drm_dma32_t d32;
+	struct drm_dma d64;
+	int error;
+
+	if ((error = copyin(&d32, arg, sizeof(d32))) != 0)
+		return error;
+
+	dma64to32(&d32, &d64);
+
+	error = drm_ioctl(file, DRM_IOCTL_DMA, &d64);
+	if (error)
+		return error;
+
+	dma32to64(&d64, &d32);
+
+	return 0;
+}
+
+//XXX:i commented the below line for later use
+#if IS_ENABLED(CONFIG_AGP)
+typedef struct drm_agp_mode32 {
+	uint32_t mode;	/**< AGP mode */
+} drm_agp_mode32_t;
+
+static int 
+compat_drm_agp_enable(struct file *file, void *arg)
+{
+	drm_agp_mode32_t m32;
+	struct drm_agp_mode m64;
+	int error;
+	
+	if ((error = copyin(&m32, arg, sizeof(m32))) != 0)
+		return error;
+
+	m32.mode = m64.mode;
+
+	return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, &m64);
+}
+
+typedef struct drm_agp_info32 {
+	int agp_version_major;
+	int agp_version_minor;
+	uint32_t mode;
+	uint32_t aperture_base;		/* physical address */
+	uint32_t aperture_size;		/* bytes */
+	uint32_t memory_allowed;	/* bytes */
+	uint32_t memory_used;
+
+	/* PCI information */
+	unsigned short id_vendor;
+	unsigned short id_device;
+} drm_agp_info32_t;
+
+static void 
+info32to64(struct drm_agp_info *i64, const drm_agp_info32_t *i32)
+{
+	i64->agp_version_major = i32->agp_version_major;
+	i64->agp_version_minor = i32->agp_version_minor;
+	i64->mode = i32->mode;
+	i64->aperture_base = i32->aperture_base;
+	i64->aperture_size = i32->aperture_size;
+	i64->memory_allowed = i32->memory_allowed;
+	i64->memory_used = i64->memory_used;
+	i64->id_vendor = i32->id_vendor;
+	i64->id_device = i32->id_device;
+}
+
+static int 
+compat_drm_agp_info(struct file *file, void *arg)
+{
+	drm_agp_info32_t i32;
+	struct drm_agp_info i64;
+	int error;
+
+	error = drm_ioctl(file, DRM_IOCTL_AGP_INFO, &i64);
+	if (error)
+		return error;
+	
+	info32to64(&i64,&i32);
+	
+	return copyout(arg, &i32, sizeof(i32));
+
+}
+
+typedef struct drm_agp_buffer32 {
+	uint32_t size;		/**< In bytes -- will round to page boundary */
+	uint32_t handle;	/**< Used for binding / unbinding */
+	uint32_t type;		/**< Type of memory to allocate */
+	uint32_t physical;	/**< Physical used by i810 */
+} drm_agp_buffer32_t;
+
+static int 
+compat_drm_agp_alloc(struct file *file, void *arg)
+{
+	drm_agp_buffer32_t req32;
+	struct drm_agp_buffer req64;
+	int error;
+
+	if ((error = copyin(&req32, arg, sizeof(req32))) != 0)
+		return error;
+
+	req64.size = req32.size;
+	req64.type = req32.type;
+
+	error = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, &req64);
+	if (error)
+		return error;
+
+	req32.handle = req64.handle;
+	req32.physical = req64.physical;
+	
+	drm_ioctl(file, DRM_IOCTL_AGP_FREE, &req64);
+	
+	return copyout(arg, &req32, sizeof(req32));
+}
+
+static int 
+compat_drm_agp_free(struct file *file, void *arg)
+{
+	drm_agp_buffer32_t req32;
+	struct drm_agp_buffer req64;
+	int error;
+	uint32_t handle;
+		
+	if ((error = copyin(&req32, arg, sizeof(req32))) != 0)
+		return error;
+	
+	handle = req32.handle;
+	req64.handle = handle;
+
+	return drm_ioctl(file, DRM_IOCTL_AGP_FREE, &req64);
+}
+
+typedef struct drm_agp_binding32 {
+	uint32_t handle;	/**< From drm_agp_buffer */
+	uint32_t offset;	/**< In bytes -- will round to page boundary */
+} drm_agp_binding32_t;
+
+static int 
+compat_drm_agp_bind(struct file *file, void *arg)
+{
+	drm_agp_binding32_t req32;
+	struct drm_agp_binding req64;
+	int error;
+
+	if ((error = copyin(&req32, arg, sizeof(req32))) !=0 )
+		return error;
+	
+	req64.handle = req32.handle;
+	req64.offset = req32.offset;
+
+	return drm_ioctl(file, DRM_IOCTL_AGP_BIND, &req64);
+}
+
+static int 
+compat_drm_agp_unbind(struct file *file, void *arg)
+{
+	struct drm_agp_binding req64;
+	drm_agp_binding32_t req32;
+	uint32_t handle;
+	int error;
+
+	if ((error = copyin(&req32, arg, sizeof(req32))) != 0)
+		return error;
+
+	handle = req32.handle;
+	req64.handle = handle;
+
+	return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, &req64);
+}
+#endif /* CONFIG_AGP */
+
+typedef struct drm_scatter_gather32 {
+	uint32_t size;		/**< In bytes -- will round to page boundary */
+	uint32_t handle;	/**< Used for mapping / unmapping */
+} drm_scatter_gather32_t;
+
+static int 
+compat_drm_sg_alloc(struct file *file, void *arg)
+{
+	struct drm_scatter_gather req64;
+	drm_scatter_gather32_t req32;
+	int error;
+
+	if ((error = copyin(&req32, arg, sizeof(req32))) != 0)	
+		return error;
+
+	req64.size = req32.size;
+
+	error = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, &req64);
+	if (error)
+		return error;
+
+	/* XXX not sure about the handle conversion here... */
+	req32.handle = req64.handle >> PAGE_SHIFT;
+
+	return 0;
+}
+
+static int
+compat_drm_sg_free(struct file *file, void *arg)
+{
+	struct drm_scatter_gather req64;
+	unsigned long x;
+	drm_scatter_gather32_t req32;
+	int error;
+	
+	if((error = copyin(&req32, arg, sizeof(req32))) != 0)
+		return error;
+	
+	x = req32.handle;
+	req64.handle = x << PAGE_SHIFT;
+
+	return drm_ioctl(file, DRM_IOCTL_SG_FREE, &req64);
+}
+
+#if defined(CONFIG_X86) || defined(CONFIG_IA64)
+typedef struct drm_update_draw32 {
+	drm_drawable_t handle;
+	unsigned int type;
+	unsigned int num;
+	/* 64-bit version has a 32-bit pad here */
+	uint64_t data;	/**< Pointer */
+} __attribute__((__packed__)) drm_update_draw32_t;
+
+static void 
+update32to64(struct drm_update_draw *req64, const drm_update_draw32_t *update32)
+{
+	req64->handle = update32->handle;
+	req64->type = update32->type;
+	req64->num = update32->num;
+	req64->data = update32->data;
+}
+static int 
+compat_drm_update_draw(struct file *file, void *arg)
+{
+	drm_update_draw32_t update32;
+	struct drm_update_draw req64;
+	int error;
+	
+	if ((error = copyin(&update32, arg, sizeof(update32))) !=0)
+		return error;
+
+	update32to64(&req64, &update32);
+
+	error = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, &req64);
+	return error;
+}
+#endif
+
+struct drm_wait_vblank_request32 {
+	enum drm_vblank_seq_type type;
+	unsigned int sequence;
+	uint32_t signal;
+};
+
+struct drm_wait_vblank_reply32 {
+	enum drm_vblank_seq_type type;
+	unsigned int sequence;
+	s32 tval_sec;
+	s32 tval_usec;
+};
+
+typedef union drm_wait_vblank32 {
+	struct drm_wait_vblank_request32 request;
+	struct drm_wait_vblank_reply32 reply;
+} drm_wait_vblank32_t;
+
+static void 
+req32to64(union drm_wait_vblank *req64, const drm_wait_vblank32_t *req32)
+{
+	req64->request.type = req32->request.type;
+	req64->request.sequence = req32->request.sequence;
+	req64->request.signal = req32->request.signal;
+}
+
+static void 
+req64to32(drm_wait_vblank32_t *req32, const union drm_wait_vblank *req64)
+{
+	req32->reply.sequence = req64->reply.sequence;
+	req32->reply.tval_sec = req64->reply.tval_sec;
+	req32->reply.tval_usec = req64->reply.tval_usec;
+}
+
+static int 
+compat_drm_wait_vblank(struct file *file, void *arg)
+{
+	drm_wait_vblank32_t req32;
+	union drm_wait_vblank req64;
+	int error;
+	
+	if ((error = copyin(&req32, arg, sizeof(req32))) != 0)
+		return error;
+
+	req32to64(&req64, &req32);
+
+	error = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, &req64);
+	if (error)
+		return error;
+
+	req64to32(&req32, &req64);
+
+	return copyout(arg, &req32, sizeof(req32));
+}
+
+#if defined(CONFIG_X86) || defined(CONFIG_IA64)
+typedef struct drm_mode_fb_cmd232 {
+	uint32_t fb_id;
+	uint32_t width;
+	uint32_t height;
+	uint32_t pixel_format;
+	uint32_t flags;
+	uint32_t handles[4];
+	uint32_t pitches[4];
+	uint32_t offsets[4];
+	uint64_t modifier[4];
+} __attribute__((__packed__)) drm_mode_fb_cmd232_t;
+
+static void 
+map_req32to64(struct drm_mode_fb_cmd2 *req64, struct drm_mode_fb_cmd232 *req32) 
+{
+	req64->width = req32->width;
+	req64->height = req32->height;
+	req64->pixel_format = req32->pixel_format;
+	req64->flags = req32->flags;
+}
+
+static int 
+compat_drm_mode_addfb2(struct file *file, void *arg)
+{
+	struct drm_mode_fb_cmd232 req32;
+	struct drm_mode_fb_cmd2 req64;
+	int error;
+
+	if ((error = copyin(&req32, arg, sizeof(req32))) != 0)
+		return error;
+
+	map_req32to64(&req64, &req32);
+	
+	for (int i = 0; i < 4; i++){
+		req64.handles[i] = req32.handles[i];
+		req64.pitches[i] = req32.pitches[i];
+		req64.offsets[i] = req32.offsets[i];
+		req64.modifier[i] = req32.modifier[i];
+	}
+
+	error = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, &req64);
+	if (error)
+		return error;
+
+	req32.fb_id = req64.fb_id;
+
+	return copyout(arg, &req32, sizeof(req32));
+}
+#endif
+
+int
+netbsd32_drm_ioctl(struct file *file, unsigned long cmd, void *arg,
+    struct lwp *l)
+{
+	switch (cmd) {
+	case DRM_IOCTL_VERSION32:
+		return compat_drm_version(file, arg);
+	case DRM_IOCTL_GET_UNIQUE32:
+		return compat_drm_getunique(file, arg);
+	case DRM_IOCTL_SET_UNIQUE32:
+		return compat_drm_setunique(file, arg);
+	case DRM_IOCTL_GET_MAP32:
+		return compat_drm_getmap(file, arg);
+	case DRM_IOCTL_ADD_MAP32:
+		return compat_drm_addmap(file, arg);
+	case DRM_IOCTL_RM_MAP32:
+		return compat_drm_rmmap(file, arg);
+	case DRM_IOCTL_GET_CLIENT32:
+		return compat_drm_getclient(file, arg);
+	case DRM_IOCTL_GET_STATS32:
+		return compat_drm_getstats(file, arg);
+	case DRM_IOCTL_ADD_BUFS32:
+		return compat_drm_addbufs(file, arg);
+	case DRM_IOCTL_MARK_BUFS32:
+		return compat_drm_markbufs(file, arg);
+	case DRM_IOCTL_FREE_BUFS32:
+		return compat_drm_freebufs(file, arg);
+	case DRM_IOCTL_SET_SAREA_CTX32:
+		return compat_drm_setsareactx(file, arg);
+	case DRM_IOCTL_GET_SAREA_CTX32:
+		return compat_drm_getsareactx(file, arg);
+	case DRM_IOCTL_RES_CTX32:
+		return compat_drm_resctx(file, arg);
+	case DRM_IOCTL_DMA32:
+		return compat_drm_dma(file, arg);
+	case  DRM_IOCTL_AGP_ENABLE32:
+		return compat_drm_agp_enable(file, arg);
+	case DRM_IOCTL_AGP_INFO32:
+		return compat_drm_agp_info(file, arg);
+	case DRM_IOCTL_AGP_ALLOC32:
+		return compat_drm_agp_alloc(file,arg); 
+	case DRM_IOCTL_AGP_UNBIND32:
+		return compat_drm_agp_unbind(file, arg);
+	case DRM_IOCTL_AGP_BIND32:
+		return compat_drm_agp_bind(file, arg);
+	case DRM_IOCTL_AGP_FREE32:
+		return compat_drm_agp_free(file, arg); 
+	case DRM_IOCTL_SG_ALLOC32:
+		return compat_drm_sg_alloc(file, arg);
+	case  DRM_IOCTL_MODE_ADDFB232:
+		return compat_drm_mode_addfb2(file, arg);
+	case DRM_IOCTL_WAIT_VBLANK32:
+		return compat_drm_wait_vblank(file, arg);
+	case DRM_IOCTL_UPDATE_DRAW32:
+		return compat_drm_update_draw(file, arg);
+	case DRM_IOCTL_SG_FREE32:
+		return compat_drm_sg_free(file, arg);	
+	default:
+		return EINVAL;
+	}
+}

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