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freebsd-skq/sys/dev/drm2/drm_os_freebsd.h
Enji Cooper e5619a893e Always panic if an invalid capability is passed to capable(..) instead of 
just with INVARIANTS

rwatson's point was valid in the sense that if the data passed at runtime is
invalid, it should always trip the invariant, not just in the debug case.
This is a deterrent against malicious input, or input caused by hardware
errors.

MFC after: 4 days
X-MFC with: r302577
Requested by: rwatson
Sponsored by: EMC / Isilon Storage Division
2016-07-14 13:55:38 +00:00

704 lines
17 KiB
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/**
* \file drm_os_freebsd.h
* OS abstraction macros.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef _DRM_OS_FREEBSD_H_
#define _DRM_OS_FREEBSD_H_
#include <sys/fbio.h>
#include <sys/smp.h>
#if _BYTE_ORDER == _BIG_ENDIAN
#define __BIG_ENDIAN 4321
#else
#define __LITTLE_ENDIAN 1234
#endif
#ifdef __LP64__
#define BITS_PER_LONG 64
#else
#define BITS_PER_LONG 32
#endif
#ifndef __user
#define __user
#endif
#ifndef __iomem
#define __iomem
#endif
#ifndef __always_unused
#define __always_unused
#endif
#ifndef __must_check
#define __must_check
#endif
#ifndef __force
#define __force
#endif
#ifndef uninitialized_var
#define uninitialized_var(x) x
#endif
#define cpu_to_le16(x) htole16(x)
#define le16_to_cpu(x) le16toh(x)
#define cpu_to_le32(x) htole32(x)
#define le32_to_cpu(x) le32toh(x)
#define cpu_to_be16(x) htobe16(x)
#define be16_to_cpu(x) be16toh(x)
#define cpu_to_be32(x) htobe32(x)
#define be32_to_cpu(x) be32toh(x)
#define be32_to_cpup(x) be32toh(*x)
typedef vm_paddr_t dma_addr_t;
typedef vm_paddr_t resource_size_t;
#define wait_queue_head_t atomic_t
typedef uint64_t u64;
typedef uint32_t u32;
typedef uint16_t u16;
typedef uint8_t u8;
typedef int64_t s64;
typedef int32_t s32;
typedef int16_t s16;
typedef int8_t s8;
typedef uint16_t __le16;
typedef uint32_t __le32;
typedef uint64_t __le64;
typedef uint16_t __be16;
typedef uint32_t __be32;
typedef uint64_t __be64;
#define DRM_IRQ_ARGS void *arg
typedef void irqreturn_t;
#define IRQ_HANDLED /* nothing */
#define IRQ_NONE /* nothing */
#define __init
#define __exit
#define __read_mostly
#define BUILD_BUG_ON(x) CTASSERT(!(x))
#define BUILD_BUG_ON_NOT_POWER_OF_2(x)
#ifndef WARN
#define WARN(condition, format, ...) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
DRM_ERROR(format, ##__VA_ARGS__); \
unlikely(__ret_warn_on); \
})
#endif
#define WARN_ONCE(condition, format, ...) \
WARN(condition, format, ##__VA_ARGS__)
#define WARN_ON(cond) WARN(cond, "WARN ON: " #cond)
#define WARN_ON_SMP(cond) WARN_ON(cond)
#define BUG() panic("BUG")
#define BUG_ON(cond) KASSERT(!(cond), ("BUG ON: " #cond " -> 0x%jx", (uintmax_t)(cond)))
#define unlikely(x) __builtin_expect(!!(x), 0)
#define likely(x) __builtin_expect(!!(x), 1)
#define container_of(ptr, type, member) ({ \
__typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#define KHZ2PICOS(a) (1000000000UL/(a))
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
#define HZ hz
#define DRM_HZ hz
#define DRM_CURRENTPID curthread->td_proc->p_pid
#define DRM_SUSER(p) (priv_check(p, PRIV_DRIVER) == 0)
#define udelay(usecs) DELAY(usecs)
#define mdelay(msecs) do { int loops = (msecs); \
while (loops--) DELAY(1000); \
} while (0)
#define DRM_UDELAY(udelay) DELAY(udelay)
#define drm_msleep(x, msg) pause((msg), ((int64_t)(x)) * hz / 1000)
#define DRM_MSLEEP(msecs) drm_msleep((msecs), "drm_msleep")
#define get_seconds() time_second
#define ioread8(addr) *(volatile uint8_t *)((char *)addr)
#define ioread16(addr) *(volatile uint16_t *)((char *)addr)
#define ioread32(addr) *(volatile uint32_t *)((char *)addr)
#define iowrite8(data, addr) *(volatile uint8_t *)((char *)addr) = data;
#define iowrite16(data, addr) *(volatile uint16_t *)((char *)addr) = data;
#define iowrite32(data, addr) *(volatile uint32_t *)((char *)addr) = data;
#define DRM_READ8(map, offset) \
*(volatile u_int8_t *)(((vm_offset_t)(map)->handle) + \
(vm_offset_t)(offset))
#define DRM_READ16(map, offset) \
le16toh(*(volatile u_int16_t *)(((vm_offset_t)(map)->handle) + \
(vm_offset_t)(offset)))
#define DRM_READ32(map, offset) \
le32toh(*(volatile u_int32_t *)(((vm_offset_t)(map)->handle) + \
(vm_offset_t)(offset)))
#define DRM_READ64(map, offset) \
le64toh(*(volatile u_int64_t *)(((vm_offset_t)(map)->handle) + \
(vm_offset_t)(offset)))
#define DRM_WRITE8(map, offset, val) \
*(volatile u_int8_t *)(((vm_offset_t)(map)->handle) + \
(vm_offset_t)(offset)) = val
#define DRM_WRITE16(map, offset, val) \
*(volatile u_int16_t *)(((vm_offset_t)(map)->handle) + \
(vm_offset_t)(offset)) = htole16(val)
#define DRM_WRITE32(map, offset, val) \
*(volatile u_int32_t *)(((vm_offset_t)(map)->handle) + \
(vm_offset_t)(offset)) = htole32(val)
#define DRM_WRITE64(map, offset, val) \
*(volatile u_int64_t *)(((vm_offset_t)(map)->handle) + \
(vm_offset_t)(offset)) = htole64(val)
/* DRM_READMEMORYBARRIER() prevents reordering of reads.
* DRM_WRITEMEMORYBARRIER() prevents reordering of writes.
* DRM_MEMORYBARRIER() prevents reordering of reads and writes.
*/
#define DRM_READMEMORYBARRIER() rmb()
#define DRM_WRITEMEMORYBARRIER() wmb()
#define DRM_MEMORYBARRIER() mb()
#define smp_rmb() rmb()
#define smp_wmb() wmb()
#define smp_mb__before_atomic_inc() mb()
#define smp_mb__after_atomic_inc() mb()
#define barrier() __compiler_membar()
#define do_div(a, b) ((a) /= (b))
#define div64_u64(a, b) ((a) / (b))
#define lower_32_bits(n) ((u32)(n))
#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
#define __set_bit(n, s) set_bit((n), (s))
#define __clear_bit(n, s) clear_bit((n), (s))
#define min_t(type, x, y) ({ \
type __min1 = (x); \
type __min2 = (y); \
__min1 < __min2 ? __min1 : __min2; })
#define max_t(type, x, y) ({ \
type __max1 = (x); \
type __max2 = (y); \
__max1 > __max2 ? __max1 : __max2; })
#define memset_io(a, b, c) memset((a), (b), (c))
#define memcpy_fromio(a, b, c) memcpy((a), (b), (c))
#define memcpy_toio(a, b, c) memcpy((a), (b), (c))
#define VERIFY_READ VM_PROT_READ
#define VERIFY_WRITE VM_PROT_WRITE
#define access_ok(prot, p, l) useracc((p), (l), (prot))
/* XXXKIB what is the right code for the FreeBSD ? */
/* kib@ used ENXIO here -- dumbbell@ */
#define EREMOTEIO EIO
#define ERESTARTSYS 512 /* Same value as Linux. */
#define KTR_DRM KTR_DEV
#define KTR_DRM_REG KTR_SPARE3
#define DRM_AGP_KERN struct agp_info
#define DRM_AGP_MEM void
#define PCI_VENDOR_ID_APPLE 0x106b
#define PCI_VENDOR_ID_ASUSTEK 0x1043
#define PCI_VENDOR_ID_ATI 0x1002
#define PCI_VENDOR_ID_DELL 0x1028
#define PCI_VENDOR_ID_HP 0x103c
#define PCI_VENDOR_ID_IBM 0x1014
#define PCI_VENDOR_ID_INTEL 0x8086
#define PCI_VENDOR_ID_SERVERWORKS 0x1166
#define PCI_VENDOR_ID_SONY 0x104d
#define PCI_VENDOR_ID_VIA 0x1106
#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
#define DIV_ROUND_CLOSEST(n,d) (((n) + (d) / 2) / (d))
#define div_u64(n, d) ((n) / (d))
#define hweight32(i) bitcount32(i)
static inline unsigned long
roundup_pow_of_two(unsigned long x)
{
return (1UL << flsl(x - 1));
}
/**
* ror32 - rotate a 32-bit value right
* @word: value to rotate
* @shift: bits to roll
*
* Source: include/linux/bitops.h
*/
static inline uint32_t
ror32(uint32_t word, unsigned int shift)
{
return (word >> shift) | (word << (32 - shift));
}
#define IS_ALIGNED(x, y) (((x) & ((y) - 1)) == 0)
#define round_down(x, y) rounddown2((x), (y))
#define round_up(x, y) roundup2((x), (y))
#define get_unaligned(ptr) \
({ __typeof__(*(ptr)) __tmp; \
memcpy(&__tmp, (ptr), sizeof(*(ptr))); __tmp; })
#if _BYTE_ORDER == _LITTLE_ENDIAN
/* Taken from linux/include/linux/unaligned/le_struct.h. */
struct __una_u32 { u32 x; } __packed;
static inline u32
__get_unaligned_cpu32(const void *p)
{
const struct __una_u32 *ptr = (const struct __una_u32 *)p;
return (ptr->x);
}
static inline u32
get_unaligned_le32(const void *p)
{
return (__get_unaligned_cpu32((const u8 *)p));
}
#else
/* Taken from linux/include/linux/unaligned/le_byteshift.h. */
static inline u32
__get_unaligned_le32(const u8 *p)
{
return (p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24);
}
static inline u32
get_unaligned_le32(const void *p)
{
return (__get_unaligned_le32((const u8 *)p));
}
#endif
static inline unsigned long
ilog2(unsigned long x)
{
return (flsl(x) - 1);
}
static inline int64_t
abs64(int64_t x)
{
return (x < 0 ? -x : x);
}
int64_t timeval_to_ns(const struct timeval *tv);
struct timeval ns_to_timeval(const int64_t nsec);
#define PAGE_ALIGN(addr) round_page(addr)
#define page_to_phys(x) VM_PAGE_TO_PHYS(x)
#define offset_in_page(x) ((x) & PAGE_MASK)
#define drm_get_device_from_kdev(_kdev) (((struct drm_minor *)(_kdev)->si_drv1)->dev)
#define DRM_IOC_VOID IOC_VOID
#define DRM_IOC_READ IOC_OUT
#define DRM_IOC_WRITE IOC_IN
#define DRM_IOC_READWRITE IOC_INOUT
#define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
static inline long
__copy_to_user(void __user *to, const void *from, unsigned long n)
{
return (copyout(from, to, n) != 0 ? n : 0);
}
#define copy_to_user(to, from, n) __copy_to_user((to), (from), (n))
static inline int
__put_user(size_t size, void *ptr, void *x)
{
size = copy_to_user(ptr, x, size);
return (size ? -EFAULT : size);
}
#define put_user(x, ptr) __put_user(sizeof(*ptr), (ptr), &(x))
static inline unsigned long
__copy_from_user(void *to, const void __user *from, unsigned long n)
{
return ((copyin(__DECONST(void *, from), to, n) != 0 ? n : 0));
}
#define copy_from_user(to, from, n) __copy_from_user((to), (from), (n))
static inline int
__get_user(size_t size, const void *ptr, void *x)
{
size = copy_from_user(x, ptr, size);
return (size ? -EFAULT : size);
}
#define get_user(x, ptr) __get_user(sizeof(*ptr), (ptr), &(x))
static inline int
__copy_to_user_inatomic(void __user *to, const void *from, unsigned n)
{
return (copyout_nofault(from, to, n) != 0 ? n : 0);
}
#define __copy_to_user_inatomic_nocache(to, from, n) \
__copy_to_user_inatomic((to), (from), (n))
static inline unsigned long
__copy_from_user_inatomic(void *to, const void __user *from,
unsigned long n)
{
/*
* XXXKIB. Equivalent Linux function is implemented using
* MOVNTI for aligned moves. For unaligned head and tail,
* normal move is performed. As such, it is not incorrect, if
* only somewhat slower, to use normal copyin. All uses
* except shmem_pwrite_fast() have the destination mapped WC.
*/
return ((copyin_nofault(__DECONST(void *, from), to, n) != 0 ? n : 0));
}
#define __copy_from_user_inatomic_nocache(to, from, n) \
__copy_from_user_inatomic((to), (from), (n))
static inline int
fault_in_multipages_readable(const char __user *uaddr, int size)
{
char c;
int ret = 0;
const char __user *end = uaddr + size - 1;
if (unlikely(size == 0))
return ret;
while (uaddr <= end) {
ret = -copyin(uaddr, &c, 1);
if (ret != 0)
return -EFAULT;
uaddr += PAGE_SIZE;
}
/* Check whether the range spilled into the next page. */
if (((unsigned long)uaddr & ~PAGE_MASK) ==
((unsigned long)end & ~PAGE_MASK)) {
ret = -copyin(end, &c, 1);
}
return ret;
}
static inline int
fault_in_multipages_writeable(char __user *uaddr, int size)
{
int ret = 0;
char __user *end = uaddr + size - 1;
if (unlikely(size == 0))
return ret;
/*
* Writing zeroes into userspace here is OK, because we know that if
* the zero gets there, we'll be overwriting it.
*/
while (uaddr <= end) {
ret = subyte(uaddr, 0);
if (ret != 0)
return -EFAULT;
uaddr += PAGE_SIZE;
}
/* Check whether the range spilled into the next page. */
if (((unsigned long)uaddr & ~PAGE_MASK) ==
((unsigned long)end & ~PAGE_MASK))
ret = subyte(end, 0);
return ret;
}
enum __drm_capabilities {
CAP_SYS_ADMIN
};
static inline bool
capable(enum __drm_capabilities cap)
{
switch (cap) {
case CAP_SYS_ADMIN:
return DRM_SUSER(curthread);
default:
panic("%s: unhandled capability: %0x", __func__, cap);
return (false);
}
}
#define to_user_ptr(x) ((void *)(uintptr_t)(x))
#define sigemptyset(set) SIGEMPTYSET(set)
#define sigaddset(set, sig) SIGADDSET(set, sig)
#define DRM_LOCK(dev) sx_xlock(&(dev)->dev_struct_lock)
#define DRM_UNLOCK(dev) sx_xunlock(&(dev)->dev_struct_lock)
extern unsigned long drm_linux_timer_hz_mask;
#define jiffies ticks
#define jiffies_to_msecs(x) (((int64_t)(x)) * 1000 / hz)
#define msecs_to_jiffies(x) (((int64_t)(x)) * hz / 1000)
#define timespec_to_jiffies(x) (((x)->tv_sec * 1000000 + (x)->tv_nsec) * hz / 1000000)
#define time_after(a,b) ((long)(b) - (long)(a) < 0)
#define time_after_eq(a,b) ((long)(b) - (long)(a) <= 0)
#define round_jiffies(j) ((unsigned long)(((j) + drm_linux_timer_hz_mask) & ~drm_linux_timer_hz_mask))
#define round_jiffies_up(j) round_jiffies(j) /* TODO */
#define round_jiffies_up_relative(j) round_jiffies_up(j) /* TODO */
#define getrawmonotonic(ts) getnanouptime(ts)
#define wake_up(queue) wakeup_one((void *)queue)
#define wake_up_interruptible(queue) wakeup_one((void *)queue)
#define wake_up_all(queue) wakeup((void *)queue)
#define wake_up_interruptible_all(queue) wakeup((void *)queue)
struct completion {
unsigned int done;
struct mtx lock;
};
#define INIT_COMPLETION(c) ((c).done = 0);
static inline void
init_completion(struct completion *c)
{
mtx_init(&c->lock, "drmcompl", NULL, MTX_DEF);
c->done = 0;
}
static inline void
free_completion(struct completion *c)
{
mtx_destroy(&c->lock);
}
static inline void
complete_all(struct completion *c)
{
mtx_lock(&c->lock);
c->done++;
mtx_unlock(&c->lock);
wakeup(c);
}
static inline long
wait_for_completion_interruptible_timeout(struct completion *c,
unsigned long timeout)
{
unsigned long start_jiffies, elapsed_jiffies;
bool timeout_expired = false, awakened = false;
long ret = timeout;
start_jiffies = ticks;
mtx_lock(&c->lock);
while (c->done == 0 && !timeout_expired) {
ret = -msleep(c, &c->lock, PCATCH, "drmwco", timeout);
switch(ret) {
case -EWOULDBLOCK:
timeout_expired = true;
ret = 0;
break;
case -EINTR:
case -ERESTART:
ret = -ERESTARTSYS;
break;
case 0:
awakened = true;
break;
}
}
mtx_unlock(&c->lock);
if (awakened) {
elapsed_jiffies = ticks - start_jiffies;
ret = timeout > elapsed_jiffies ? timeout - elapsed_jiffies : 1;
}
return (ret);
}
MALLOC_DECLARE(DRM_MEM_DMA);
MALLOC_DECLARE(DRM_MEM_SAREA);
MALLOC_DECLARE(DRM_MEM_DRIVER);
MALLOC_DECLARE(DRM_MEM_MAGIC);
MALLOC_DECLARE(DRM_MEM_MINOR);
MALLOC_DECLARE(DRM_MEM_IOCTLS);
MALLOC_DECLARE(DRM_MEM_MAPS);
MALLOC_DECLARE(DRM_MEM_BUFS);
MALLOC_DECLARE(DRM_MEM_SEGS);
MALLOC_DECLARE(DRM_MEM_PAGES);
MALLOC_DECLARE(DRM_MEM_FILES);
MALLOC_DECLARE(DRM_MEM_QUEUES);
MALLOC_DECLARE(DRM_MEM_CMDS);
MALLOC_DECLARE(DRM_MEM_MAPPINGS);
MALLOC_DECLARE(DRM_MEM_BUFLISTS);
MALLOC_DECLARE(DRM_MEM_AGPLISTS);
MALLOC_DECLARE(DRM_MEM_CTXBITMAP);
MALLOC_DECLARE(DRM_MEM_SGLISTS);
MALLOC_DECLARE(DRM_MEM_MM);
MALLOC_DECLARE(DRM_MEM_HASHTAB);
MALLOC_DECLARE(DRM_MEM_KMS);
MALLOC_DECLARE(DRM_MEM_VBLANK);
#define simple_strtol(a, b, c) strtol((a), (b), (c))
typedef struct drm_pci_id_list
{
int vendor;
int device;
long driver_private;
char *name;
} drm_pci_id_list_t;
#ifdef __i386__
#define CONFIG_X86 1
#endif
#ifdef __amd64__
#define CONFIG_X86 1
#define CONFIG_X86_64 1
#endif
#ifdef __ia64__
#define CONFIG_IA64 1
#endif
#if defined(__i386__) || defined(__amd64__)
#define CONFIG_ACPI
#define CONFIG_DRM_I915_KMS
#undef CONFIG_INTEL_IOMMU
#endif
#ifdef COMPAT_FREEBSD32
#define CONFIG_COMPAT
#endif
#define CONFIG_AGP 1
#define CONFIG_MTRR 1
#define CONFIG_FB 1
extern const char *fb_mode_option;
#undef CONFIG_DEBUG_FS
#undef CONFIG_VGA_CONSOLE
#define EXPORT_SYMBOL(x)
#define EXPORT_SYMBOL_GPL(x)
#define MODULE_AUTHOR(author)
#define MODULE_DESCRIPTION(desc)
#define MODULE_LICENSE(license)
#define MODULE_PARM_DESC(name, desc)
#define MODULE_DEVICE_TABLE(name, list)
#define module_param_named(name, var, type, perm)
#define printk printf
#define pr_err DRM_ERROR
#define pr_warn DRM_WARNING
#define pr_warn_once DRM_WARNING
#define KERN_DEBUG ""
/* I2C compatibility. */
#define I2C_M_RD IIC_M_RD
#define I2C_M_WR IIC_M_WR
#define I2C_M_NOSTART IIC_M_NOSTART
struct fb_info * framebuffer_alloc(void);
void framebuffer_release(struct fb_info *info);
#define console_lock()
#define console_unlock()
#define console_trylock() true
#define PM_EVENT_SUSPEND 0x0002
#define PM_EVENT_QUIESCE 0x0008
#define PM_EVENT_PRETHAW PM_EVENT_QUIESCE
typedef struct pm_message {
int event;
} pm_message_t;
static inline int
pci_read_config_byte(device_t kdev, int where, u8 *val)
{
*val = (u8)pci_read_config(kdev, where, 1);
return (0);
}
static inline int
pci_write_config_byte(device_t kdev, int where, u8 val)
{
pci_write_config(kdev, where, val, 1);
return (0);
}
static inline int
pci_read_config_word(device_t kdev, int where, uint16_t *val)
{
*val = (uint16_t)pci_read_config(kdev, where, 2);
return (0);
}
static inline int
pci_write_config_word(device_t kdev, int where, uint16_t val)
{
pci_write_config(kdev, where, val, 2);
return (0);
}
static inline int
pci_read_config_dword(device_t kdev, int where, uint32_t *val)
{
*val = (uint32_t)pci_read_config(kdev, where, 4);
return (0);
}
static inline int
pci_write_config_dword(device_t kdev, int where, uint32_t val)
{
pci_write_config(kdev, where, val, 4);
return (0);
}
static inline void
on_each_cpu(void callback(void *data), void *data, int wait)
{
smp_rendezvous(NULL, callback, NULL, data);
}
void hex_dump_to_buffer(const void *buf, size_t len, int rowsize,
int groupsize, char *linebuf, size_t linebuflen, bool ascii);
#define KIB_NOTYET() \
do { \
if (drm_debug && drm_notyet) \
printf("NOTYET: %s at %s:%d\n", __func__, __FILE__, __LINE__); \
} while (0)
#endif /* _DRM_OS_FREEBSD_H_ */
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