mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-18 10:35:55 +00:00
4775259180
on -current. Actually copy in data from userspace to kernel in the linux-compat ioctl path. Make sure ioctl sizes are as expected in the handler functions. Reviewed by: rwatson
317 lines
8.4 KiB
C
317 lines
8.4 KiB
C
/*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/lockmgr.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/filio.h>
|
|
#include <sys/sysctl.h>
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
#include <machine/pmap.h>
|
|
#if __FreeBSD_version >= 500000
|
|
#include <sys/selinfo.h>
|
|
#endif
|
|
#include <sys/bus.h>
|
|
#if __FreeBSD_version >= 400005
|
|
#include <sys/taskqueue.h>
|
|
#endif
|
|
#if __FreeBSD_version >= 500000
|
|
#include <sys/mutex.h>
|
|
#endif
|
|
|
|
#if __FreeBSD_version >= 400006
|
|
#define __REALLY_HAVE_AGP __HAVE_AGP
|
|
#endif
|
|
|
|
#define __REALLY_HAVE_MTRR 0
|
|
#define __REALLY_HAVE_SG 0
|
|
|
|
#if __REALLY_HAVE_AGP
|
|
#include <pci/agpvar.h>
|
|
#endif
|
|
|
|
/* Allow setting of debug code enabling from kernel config file */
|
|
#include <opt_drm.h>
|
|
#if DRM_DEBUG
|
|
#undef DRM_DEBUG_CODE
|
|
#define DRM_DEBUG_CODE 2
|
|
#endif
|
|
#undef DRM_DEBUG
|
|
|
|
#define DRM_TIME_SLICE (hz/20) /* Time slice for GLXContexts */
|
|
|
|
#define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
|
|
#define DRM_DEV_UID 0
|
|
#define DRM_DEV_GID 0
|
|
|
|
#if __FreeBSD_version >= 500000
|
|
#define DRM_OS_SPINTYPE struct mtx
|
|
#define DRM_OS_SPININIT(l,name) mtx_init(&l, name, NULL, MTX_DEF)
|
|
#define DRM_OS_SPINLOCK(l) mtx_lock(l)
|
|
#define DRM_OS_SPINUNLOCK(u) mtx_unlock(u);
|
|
#define DRM_OS_CURPROC curthread
|
|
#define DRM_OS_STRUCTPROC struct thread
|
|
#define DRM_OS_CURRENTPID curthread->td_proc->p_pid
|
|
#else
|
|
#define DRM_OS_CURPROC curproc
|
|
#define DRM_OS_STRUCTPROC struct proc
|
|
#define DRM_OS_SPINTYPE struct simplelock
|
|
#define DRM_OS_SPININIT(l,name) simple_lock_init(&l)
|
|
#define DRM_OS_SPINLOCK(l) simple_lock(l)
|
|
#define DRM_OS_SPINUNLOCK(u) simple_unlock(u);
|
|
#define DRM_OS_CURRENTPID curproc->p_pid
|
|
#endif
|
|
|
|
#define DRM_OS_IOCTL dev_t kdev, u_long cmd, caddr_t data, int flags, DRM_OS_STRUCTPROC *p
|
|
#define IOCTL_ARGS_PASS kdev, cmd, data, flags, p
|
|
#define DRM_OS_LOCK lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, DRM_OS_CURPROC)
|
|
#define DRM_OS_UNLOCK lockmgr(&dev->dev_lock, LK_RELEASE, 0, DRM_OS_CURPROC)
|
|
#define DRM_OS_CHECKSUSER suser(p)
|
|
#define DRM_OS_TASKQUEUE_ARGS void *dev, int pending
|
|
#define DRM_OS_IRQ_ARGS void *device
|
|
#define DRM_OS_DEVICE drm_device_t *dev = kdev->si_drv1
|
|
#define DRM_OS_MALLOC(size) malloc( size, DRM(M_DRM), M_NOWAIT )
|
|
#define DRM_OS_FREE(pt) free( pt, DRM(M_DRM) )
|
|
#define DRM_OS_VTOPHYS(addr) vtophys(addr)
|
|
|
|
#define DRM_OS_PRIV \
|
|
drm_file_t *priv = (drm_file_t *) DRM(find_file_by_proc)(dev, p); \
|
|
if (!priv) { \
|
|
DRM_DEBUG("can't find authenticator\n"); \
|
|
return EINVAL; \
|
|
}
|
|
|
|
#define DRM_OS_DELAY( udelay ) \
|
|
do { \
|
|
struct timeval tv1, tv2; \
|
|
microtime(&tv1); \
|
|
do { \
|
|
microtime(&tv2); \
|
|
} \
|
|
while (((tv2.tv_sec-tv1.tv_sec)*1000000 + tv2.tv_usec - tv1.tv_usec) < udelay ); \
|
|
} while (0)
|
|
|
|
#define DRM_OS_ERR(v) v
|
|
|
|
|
|
#define DRM_OS_KRNTOUSR( user, kern, size) \
|
|
if ( IOCPARM_LEN(cmd) != size) \
|
|
return EINVAL; \
|
|
*user = kern;
|
|
#define DRM_OS_KRNFROMUSR(kern, user, size) \
|
|
if ( IOCPARM_LEN(cmd) != size) \
|
|
return EINVAL; \
|
|
kern = *user;
|
|
#define DRM_OS_COPYTOUSR(user, kern, size) \
|
|
copyout(kern, user, size)
|
|
#define DRM_OS_COPYFROMUSR(kern, user, size) \
|
|
copyin(user, kern, size)
|
|
|
|
#define DRM_OS_READMEMORYBARRIER \
|
|
{ \
|
|
int xchangeDummy; \
|
|
DRM_DEBUG("%s\n", __func__); \
|
|
__asm__ volatile(" push %%eax ; xchg %%eax, %0 ; pop %%eax" : : "m" (xchangeDummy)); \
|
|
__asm__ volatile(" push %%eax ; push %%ebx ; push %%ecx ; push %%edx ;" \
|
|
" movl $0,%%eax ; cpuid ; pop %%edx ; pop %%ecx ; pop %%ebx ;" \
|
|
" pop %%eax" : /* no outputs */ : /* no inputs */ ); \
|
|
} while (0);
|
|
|
|
#define DRM_OS_WRITEMEMORYBARRIER DRM_OS_READMEMORYBARRIER
|
|
|
|
#define DRM_OS_WAKEUP(w) wakeup(w)
|
|
#define DRM_OS_WAKEUP_INT(w) wakeup(w)
|
|
|
|
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
|
|
|
|
#define malloctype DRM(M_DRM)
|
|
/* The macros confliced in the MALLOC_DEFINE */
|
|
MALLOC_DECLARE(malloctype);
|
|
#undef malloctype
|
|
|
|
typedef struct drm_chipinfo
|
|
{
|
|
int vendor;
|
|
int device;
|
|
int supported;
|
|
char *name;
|
|
} drm_chipinfo_t;
|
|
|
|
typedef unsigned long atomic_t;
|
|
typedef u_int32_t cycles_t;
|
|
typedef u_int32_t spinlock_t;
|
|
typedef u_int32_t u32;
|
|
typedef u_int16_t u16;
|
|
typedef u_int8_t u8;
|
|
#define atomic_set(p, v) (*(p) = (v))
|
|
#define atomic_read(p) (*(p))
|
|
#define atomic_inc(p) atomic_add_long(p, 1)
|
|
#define atomic_dec(p) atomic_subtract_long(p, 1)
|
|
#define atomic_add(n, p) atomic_add_long(p, n)
|
|
#define atomic_sub(n, p) atomic_subtract_long(p, n)
|
|
|
|
/* Fake this */
|
|
static __inline unsigned int
|
|
test_and_set_bit(int b, volatile unsigned long *p)
|
|
{
|
|
int s = splhigh();
|
|
unsigned int m = 1<<b;
|
|
unsigned int r = *p & m;
|
|
*p |= m;
|
|
splx(s);
|
|
return r;
|
|
}
|
|
|
|
static __inline void
|
|
clear_bit(int b, volatile unsigned long *p)
|
|
{
|
|
atomic_clear_long(p + (b >> 5), 1 << (b & 0x1f));
|
|
}
|
|
|
|
static __inline void
|
|
set_bit(int b, volatile unsigned long *p)
|
|
{
|
|
atomic_set_long(p + (b >> 5), 1 << (b & 0x1f));
|
|
}
|
|
|
|
static __inline int
|
|
test_bit(int b, volatile unsigned long *p)
|
|
{
|
|
return p[b >> 5] & (1 << (b & 0x1f));
|
|
}
|
|
|
|
static __inline int
|
|
find_first_zero_bit(volatile unsigned long *p, int max)
|
|
{
|
|
int b;
|
|
|
|
for (b = 0; b < max; b += 32) {
|
|
if (p[b >> 5] != ~0) {
|
|
for (;;) {
|
|
if ((p[b >> 5] & (1 << (b & 0x1f))) == 0)
|
|
return b;
|
|
b++;
|
|
}
|
|
}
|
|
}
|
|
return max;
|
|
}
|
|
|
|
#define spldrm() spltty()
|
|
|
|
#define memset(p, v, s) bzero(p, s)
|
|
|
|
/*
|
|
* Fake out the module macros for versions of FreeBSD where they don't
|
|
* exist.
|
|
*/
|
|
#if (__FreeBSD_version < 500002 && __FreeBSD_version > 500000) || __FreeBSD_version < 420000
|
|
/* FIXME: again, what's the exact date? */
|
|
#define MODULE_VERSION(a,b) struct __hack
|
|
#define MODULE_DEPEND(a,b,c,d,e) struct __hack
|
|
|
|
#endif
|
|
|
|
#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
|
|
#define _DRM_CAS(lock,old,new,__ret) \
|
|
do { \
|
|
int __dummy; /* Can't mark eax as clobbered */ \
|
|
__asm__ __volatile__( \
|
|
"lock ; cmpxchg %4,%1\n\t" \
|
|
"setnz %0" \
|
|
: "=d" (__ret), \
|
|
"=m" (__drm_dummy_lock(lock)), \
|
|
"=a" (__dummy) \
|
|
: "2" (old), \
|
|
"r" (new)); \
|
|
} while (0)
|
|
|
|
/* Redefinitions to make templating easy */
|
|
#define wait_queue_head_t long
|
|
#define agp_memory void
|
|
#define jiffies ticks
|
|
|
|
/* Macros to make printf easier */
|
|
#define DRM_ERROR(fmt, arg...) \
|
|
printf("error: [" DRM_NAME ":%s] *ERROR* " fmt , \
|
|
__func__, ##arg)
|
|
#define DRM_MEM_ERROR(area, fmt, arg...) \
|
|
printf("error: [" DRM_NAME ":%s:%s] *ERROR* " fmt , \
|
|
__func__, DRM(mem_stats)[area].name , ##arg)
|
|
#define DRM_INFO(fmt, arg...) printf("info: " "[" DRM_NAME "] " fmt , ##arg)
|
|
|
|
#if DRM_DEBUG_CODE
|
|
#define DRM_DEBUG(fmt, arg...) \
|
|
do { \
|
|
if (DRM(flags) & DRM_FLAG_DEBUG) \
|
|
printf("[" DRM_NAME ":%s] " fmt , \
|
|
__func__, ##arg); \
|
|
} while (0)
|
|
#else
|
|
#define DRM_DEBUG(fmt, arg...) do { } while (0)
|
|
#endif
|
|
|
|
#define DRM_PROC_LIMIT (PAGE_SIZE-80)
|
|
|
|
#if (__FreeBSD_version >= 500000) || ((__FreeBSD_version < 500000) && (__FreeBSD_version >= 410002))
|
|
#define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS)
|
|
#else
|
|
#define DRM_SYSCTL_HANDLER_ARGS SYSCTL_HANDLER_ARGS
|
|
#endif
|
|
|
|
#define DRM_SYSCTL_PRINT(fmt, arg...) \
|
|
snprintf(buf, sizeof(buf), fmt, ##arg); \
|
|
error = SYSCTL_OUT(req, buf, strlen(buf)); \
|
|
if (error) return error;
|
|
|
|
#define DRM_SYSCTL_PRINT_RET(ret, fmt, arg...) \
|
|
snprintf(buf, sizeof(buf), fmt, ##arg); \
|
|
error = SYSCTL_OUT(req, buf, strlen(buf)); \
|
|
if (error) { ret; return error; }
|
|
|
|
|
|
#define DRM_FIND_MAP(dest, o) \
|
|
do { \
|
|
drm_map_list_entry_t *listentry; \
|
|
TAILQ_FOREACH(listentry, dev->maplist, link) { \
|
|
if ( listentry->map->offset == o ) { \
|
|
dest = listentry->map; \
|
|
break; \
|
|
} \
|
|
} \
|
|
} while (0)
|
|
|
|
|
|
/* Internal functions */
|
|
|
|
/* drm_drv.h */
|
|
extern d_open_t DRM(open);
|
|
extern d_close_t DRM(close);
|
|
extern d_read_t DRM(read);
|
|
extern d_write_t DRM(write);
|
|
extern d_poll_t DRM(poll);
|
|
extern d_mmap_t DRM(mmap);
|
|
extern int DRM(open_helper)(dev_t kdev, int flags, int fmt,
|
|
DRM_OS_STRUCTPROC *p, drm_device_t *dev);
|
|
extern drm_file_t *DRM(find_file_by_proc)(drm_device_t *dev,
|
|
DRM_OS_STRUCTPROC *p);
|
|
|
|
/* Memory management support (drm_memory.h) */
|
|
extern int DRM(mem_info) DRM_SYSCTL_HANDLER_ARGS;
|
|
|
|
/* SysCtl Support (drm_sysctl.h) */
|
|
extern int DRM(sysctl_init)(drm_device_t *dev);
|
|
extern int DRM(sysctl_cleanup)(drm_device_t *dev);
|