forked from KolibriOS/kolibrios
714 lines
17 KiB
C
714 lines
17 KiB
C
#include <ddk.h>
|
|
#include <linux/mm.h>
|
|
#include <drm/drmP.h>
|
|
#include <drm/i915_drm.h>
|
|
#include "i915_drv.h"
|
|
#include "intel_drv.h"
|
|
#include <linux/hdmi.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/fence.h>
|
|
#include "i915_kos32.h"
|
|
|
|
struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags)
|
|
{
|
|
struct file *filep;
|
|
int count;
|
|
|
|
filep = __builtin_malloc(sizeof(*filep));
|
|
|
|
if(unlikely(filep == NULL))
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
count = size / PAGE_SIZE;
|
|
|
|
filep->pages = kzalloc(sizeof(struct page *) * count, 0);
|
|
if(unlikely(filep->pages == NULL))
|
|
{
|
|
kfree(filep);
|
|
return ERR_PTR(-ENOMEM);
|
|
};
|
|
|
|
filep->count = count;
|
|
filep->allocated = 0;
|
|
filep->vma = NULL;
|
|
|
|
// printf("%s file %p pages %p count %d\n",
|
|
// __FUNCTION__,filep, filep->pages, count);
|
|
|
|
return filep;
|
|
}
|
|
|
|
struct page *shmem_read_mapping_page_gfp(struct file *filep,
|
|
pgoff_t index, gfp_t gfp)
|
|
{
|
|
struct page *page;
|
|
|
|
if(unlikely(index >= filep->count))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
page = filep->pages[index];
|
|
|
|
if(unlikely(page == NULL))
|
|
{
|
|
page = (struct page *)AllocPage();
|
|
|
|
if(unlikely(page == NULL))
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
filep->pages[index] = page;
|
|
// printf("file %p index %d page %x\n", filep, index, page);
|
|
// delay(1);
|
|
|
|
};
|
|
|
|
return page;
|
|
};
|
|
|
|
unsigned long vm_mmap(struct file *file, unsigned long addr,
|
|
unsigned long len, unsigned long prot,
|
|
unsigned long flag, unsigned long offset)
|
|
{
|
|
char *mem, *ptr;
|
|
int i;
|
|
|
|
if (unlikely(offset + PAGE_ALIGN(len) < offset))
|
|
return -EINVAL;
|
|
if (unlikely(offset & ~PAGE_MASK))
|
|
return -EINVAL;
|
|
|
|
mem = UserAlloc(len);
|
|
if(unlikely(mem == NULL))
|
|
return -ENOMEM;
|
|
|
|
for(i = offset, ptr = mem; i < offset+len; i+= 4096, ptr+= 4096)
|
|
{
|
|
struct page *page;
|
|
|
|
page = shmem_read_mapping_page_gfp(file, i/PAGE_SIZE,0);
|
|
|
|
if (unlikely(IS_ERR(page)))
|
|
goto err;
|
|
|
|
MapPage(ptr, (addr_t)page, PG_SHARED|PG_UW);
|
|
}
|
|
|
|
return (unsigned long)mem;
|
|
err:
|
|
UserFree(mem);
|
|
return -ENOMEM;
|
|
};
|
|
|
|
void shmem_file_delete(struct file *filep)
|
|
{
|
|
// printf("%s file %p pages %p count %d\n",
|
|
// __FUNCTION__, filep, filep->pages, filep->count);
|
|
|
|
if(filep->pages)
|
|
kfree(filep->pages);
|
|
}
|
|
|
|
|
|
|
|
static void *check_bytes8(const u8 *start, u8 value, unsigned int bytes)
|
|
{
|
|
while (bytes) {
|
|
if (*start != value)
|
|
return (void *)start;
|
|
start++;
|
|
bytes--;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* memchr_inv - Find an unmatching character in an area of memory.
|
|
* @start: The memory area
|
|
* @c: Find a character other than c
|
|
* @bytes: The size of the area.
|
|
*
|
|
* returns the address of the first character other than @c, or %NULL
|
|
* if the whole buffer contains just @c.
|
|
*/
|
|
void *memchr_inv(const void *start, int c, size_t bytes)
|
|
{
|
|
u8 value = c;
|
|
u64 value64;
|
|
unsigned int words, prefix;
|
|
|
|
if (bytes <= 16)
|
|
return check_bytes8(start, value, bytes);
|
|
|
|
value64 = value;
|
|
#if defined(ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64
|
|
value64 *= 0x0101010101010101;
|
|
#elif defined(ARCH_HAS_FAST_MULTIPLIER)
|
|
value64 *= 0x01010101;
|
|
value64 |= value64 << 32;
|
|
#else
|
|
value64 |= value64 << 8;
|
|
value64 |= value64 << 16;
|
|
value64 |= value64 << 32;
|
|
#endif
|
|
|
|
prefix = (unsigned long)start % 8;
|
|
if (prefix) {
|
|
u8 *r;
|
|
|
|
prefix = 8 - prefix;
|
|
r = check_bytes8(start, value, prefix);
|
|
if (r)
|
|
return r;
|
|
start += prefix;
|
|
bytes -= prefix;
|
|
}
|
|
|
|
words = bytes / 8;
|
|
|
|
while (words) {
|
|
if (*(u64 *)start != value64)
|
|
return check_bytes8(start, value, 8);
|
|
start += 8;
|
|
words--;
|
|
}
|
|
|
|
return check_bytes8(start, value, bytes % 8);
|
|
}
|
|
|
|
|
|
|
|
int dma_map_sg(struct device *dev, struct scatterlist *sglist,
|
|
int nelems, int dir)
|
|
{
|
|
struct scatterlist *s;
|
|
int i;
|
|
|
|
for_each_sg(sglist, s, nelems, i) {
|
|
s->dma_address = (dma_addr_t)sg_phys(s);
|
|
#ifdef CONFIG_NEED_SG_DMA_LENGTH
|
|
s->dma_length = s->length;
|
|
#endif
|
|
}
|
|
|
|
return nelems;
|
|
}
|
|
|
|
|
|
|
|
#define _U 0x01 /* upper */
|
|
#define _L 0x02 /* lower */
|
|
#define _D 0x04 /* digit */
|
|
#define _C 0x08 /* cntrl */
|
|
#define _P 0x10 /* punct */
|
|
#define _S 0x20 /* white space (space/lf/tab) */
|
|
#define _X 0x40 /* hex digit */
|
|
#define _SP 0x80 /* hard space (0x20) */
|
|
|
|
extern const unsigned char _ctype[];
|
|
|
|
#define __ismask(x) (_ctype[(int)(unsigned char)(x)])
|
|
|
|
#define isalnum(c) ((__ismask(c)&(_U|_L|_D)) != 0)
|
|
#define isalpha(c) ((__ismask(c)&(_U|_L)) != 0)
|
|
#define iscntrl(c) ((__ismask(c)&(_C)) != 0)
|
|
#define isdigit(c) ((__ismask(c)&(_D)) != 0)
|
|
#define isgraph(c) ((__ismask(c)&(_P|_U|_L|_D)) != 0)
|
|
#define islower(c) ((__ismask(c)&(_L)) != 0)
|
|
#define isprint(c) ((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)
|
|
#define ispunct(c) ((__ismask(c)&(_P)) != 0)
|
|
/* Note: isspace() must return false for %NUL-terminator */
|
|
#define isspace(c) ((__ismask(c)&(_S)) != 0)
|
|
#define isupper(c) ((__ismask(c)&(_U)) != 0)
|
|
#define isxdigit(c) ((__ismask(c)&(_D|_X)) != 0)
|
|
|
|
#define isascii(c) (((unsigned char)(c))<=0x7f)
|
|
#define toascii(c) (((unsigned char)(c))&0x7f)
|
|
|
|
static inline unsigned char __tolower(unsigned char c)
|
|
{
|
|
if (isupper(c))
|
|
c -= 'A'-'a';
|
|
return c;
|
|
}
|
|
|
|
static inline unsigned char __toupper(unsigned char c)
|
|
{
|
|
if (islower(c))
|
|
c -= 'a'-'A';
|
|
return c;
|
|
}
|
|
|
|
#define tolower(c) __tolower(c)
|
|
#define toupper(c) __toupper(c)
|
|
|
|
/*
|
|
* Fast implementation of tolower() for internal usage. Do not use in your
|
|
* code.
|
|
*/
|
|
static inline char _tolower(const char c)
|
|
{
|
|
return c | 0x20;
|
|
}
|
|
|
|
|
|
void *kmemdup(const void *src, size_t len, gfp_t gfp)
|
|
{
|
|
void *p;
|
|
|
|
p = kmalloc(len, gfp);
|
|
if (p)
|
|
memcpy(p, src, len);
|
|
return p;
|
|
}
|
|
|
|
|
|
#define KMAP_MAX 256
|
|
|
|
static struct mutex kmap_mutex;
|
|
static struct page* kmap_table[KMAP_MAX];
|
|
static int kmap_av;
|
|
static int kmap_first;
|
|
static void* kmap_base;
|
|
|
|
|
|
int kmap_init()
|
|
{
|
|
kmap_base = AllocKernelSpace(KMAP_MAX*4096);
|
|
if(kmap_base == NULL)
|
|
return -1;
|
|
|
|
kmap_av = KMAP_MAX;
|
|
MutexInit(&kmap_mutex);
|
|
return 0;
|
|
};
|
|
|
|
void *kmap(struct page *page)
|
|
{
|
|
void *vaddr = NULL;
|
|
int i;
|
|
|
|
do
|
|
{
|
|
MutexLock(&kmap_mutex);
|
|
if(kmap_av != 0)
|
|
{
|
|
for(i = kmap_first; i < KMAP_MAX; i++)
|
|
{
|
|
if(kmap_table[i] == NULL)
|
|
{
|
|
kmap_av--;
|
|
kmap_first = i;
|
|
kmap_table[i] = page;
|
|
vaddr = kmap_base + (i<<12);
|
|
MapPage(vaddr,(addr_t)page,3);
|
|
break;
|
|
};
|
|
};
|
|
};
|
|
MutexUnlock(&kmap_mutex);
|
|
}while(vaddr == NULL);
|
|
|
|
return vaddr;
|
|
};
|
|
|
|
void *kmap_atomic(struct page *page) __attribute__ ((alias ("kmap")));
|
|
|
|
void kunmap(struct page *page)
|
|
{
|
|
void *vaddr;
|
|
int i;
|
|
|
|
MutexLock(&kmap_mutex);
|
|
|
|
for(i = 0; i < KMAP_MAX; i++)
|
|
{
|
|
if(kmap_table[i] == page)
|
|
{
|
|
kmap_av++;
|
|
if(i < kmap_first)
|
|
kmap_first = i;
|
|
kmap_table[i] = NULL;
|
|
vaddr = kmap_base + (i<<12);
|
|
MapPage(vaddr,0,0);
|
|
break;
|
|
};
|
|
};
|
|
|
|
MutexUnlock(&kmap_mutex);
|
|
};
|
|
|
|
void kunmap_atomic(void *vaddr)
|
|
{
|
|
int i;
|
|
|
|
MapPage(vaddr,0,0);
|
|
|
|
i = (vaddr - kmap_base) >> 12;
|
|
|
|
MutexLock(&kmap_mutex);
|
|
|
|
kmap_av++;
|
|
if(i < kmap_first)
|
|
kmap_first = i;
|
|
kmap_table[i] = NULL;
|
|
|
|
MutexUnlock(&kmap_mutex);
|
|
}
|
|
|
|
void msleep(unsigned int msecs)
|
|
{
|
|
msecs /= 10;
|
|
if(!msecs) msecs = 1;
|
|
|
|
__asm__ __volatile__ (
|
|
"call *__imp__Delay"
|
|
::"b" (msecs));
|
|
__asm__ __volatile__ (
|
|
"":::"ebx");
|
|
|
|
};
|
|
|
|
|
|
/* simple loop based delay: */
|
|
static void delay_loop(unsigned long loops)
|
|
{
|
|
asm volatile(
|
|
" test %0,%0 \n"
|
|
" jz 3f \n"
|
|
" jmp 1f \n"
|
|
|
|
".align 16 \n"
|
|
"1: jmp 2f \n"
|
|
|
|
".align 16 \n"
|
|
"2: dec %0 \n"
|
|
" jnz 2b \n"
|
|
"3: dec %0 \n"
|
|
|
|
: /* we don't need output */
|
|
:"a" (loops)
|
|
);
|
|
}
|
|
|
|
|
|
static void (*delay_fn)(unsigned long) = delay_loop;
|
|
|
|
void __delay(unsigned long loops)
|
|
{
|
|
delay_fn(loops);
|
|
}
|
|
|
|
|
|
inline void __const_udelay(unsigned long xloops)
|
|
{
|
|
int d0;
|
|
|
|
xloops *= 4;
|
|
asm("mull %%edx"
|
|
: "=d" (xloops), "=&a" (d0)
|
|
: "1" (xloops), ""
|
|
(loops_per_jiffy * (HZ/4)));
|
|
|
|
__delay(++xloops);
|
|
}
|
|
|
|
void __udelay(unsigned long usecs)
|
|
{
|
|
__const_udelay(usecs * 0x000010c7); /* 2**32 / 1000000 (rounded up) */
|
|
}
|
|
|
|
unsigned int _sw_hweight32(unsigned int w)
|
|
{
|
|
#ifdef CONFIG_ARCH_HAS_FAST_MULTIPLIER
|
|
w -= (w >> 1) & 0x55555555;
|
|
w = (w & 0x33333333) + ((w >> 2) & 0x33333333);
|
|
w = (w + (w >> 4)) & 0x0f0f0f0f;
|
|
return (w * 0x01010101) >> 24;
|
|
#else
|
|
unsigned int res = w - ((w >> 1) & 0x55555555);
|
|
res = (res & 0x33333333) + ((res >> 2) & 0x33333333);
|
|
res = (res + (res >> 4)) & 0x0F0F0F0F;
|
|
res = res + (res >> 8);
|
|
return (res + (res >> 16)) & 0x000000FF;
|
|
#endif
|
|
}
|
|
EXPORT_SYMBOL(_sw_hweight32);
|
|
|
|
|
|
void usleep_range(unsigned long min, unsigned long max)
|
|
{
|
|
udelay(max);
|
|
}
|
|
EXPORT_SYMBOL(usleep_range);
|
|
|
|
|
|
static unsigned long round_jiffies_common(unsigned long j, int cpu,
|
|
bool force_up)
|
|
{
|
|
int rem;
|
|
unsigned long original = j;
|
|
|
|
/*
|
|
* We don't want all cpus firing their timers at once hitting the
|
|
* same lock or cachelines, so we skew each extra cpu with an extra
|
|
* 3 jiffies. This 3 jiffies came originally from the mm/ code which
|
|
* already did this.
|
|
* The skew is done by adding 3*cpunr, then round, then subtract this
|
|
* extra offset again.
|
|
*/
|
|
j += cpu * 3;
|
|
|
|
rem = j % HZ;
|
|
|
|
/*
|
|
* If the target jiffie is just after a whole second (which can happen
|
|
* due to delays of the timer irq, long irq off times etc etc) then
|
|
* we should round down to the whole second, not up. Use 1/4th second
|
|
* as cutoff for this rounding as an extreme upper bound for this.
|
|
* But never round down if @force_up is set.
|
|
*/
|
|
if (rem < HZ/4 && !force_up) /* round down */
|
|
j = j - rem;
|
|
else /* round up */
|
|
j = j - rem + HZ;
|
|
|
|
/* now that we have rounded, subtract the extra skew again */
|
|
j -= cpu * 3;
|
|
|
|
/*
|
|
* Make sure j is still in the future. Otherwise return the
|
|
* unmodified value.
|
|
*/
|
|
return time_is_after_jiffies(j) ? j : original;
|
|
}
|
|
|
|
|
|
unsigned long round_jiffies_up_relative(unsigned long j, int cpu)
|
|
{
|
|
unsigned long j0 = jiffies;
|
|
|
|
/* Use j0 because jiffies might change while we run */
|
|
return round_jiffies_common(j + j0, 0, true) - j0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(__round_jiffies_up_relative);
|
|
|
|
|
|
#include <linux/rcupdate.h>
|
|
|
|
struct rcu_ctrlblk {
|
|
struct rcu_head *rcucblist; /* List of pending callbacks (CBs). */
|
|
struct rcu_head **donetail; /* ->next pointer of last "done" CB. */
|
|
struct rcu_head **curtail; /* ->next pointer of last CB. */
|
|
// RCU_TRACE(long qlen); /* Number of pending CBs. */
|
|
// RCU_TRACE(unsigned long gp_start); /* Start time for stalls. */
|
|
// RCU_TRACE(unsigned long ticks_this_gp); /* Statistic for stalls. */
|
|
// RCU_TRACE(unsigned long jiffies_stall); /* Jiffies at next stall. */
|
|
// RCU_TRACE(const char *name); /* Name of RCU type. */
|
|
};
|
|
|
|
/* Definition for rcupdate control block. */
|
|
static struct rcu_ctrlblk rcu_sched_ctrlblk = {
|
|
.donetail = &rcu_sched_ctrlblk.rcucblist,
|
|
.curtail = &rcu_sched_ctrlblk.rcucblist,
|
|
// RCU_TRACE(.name = "rcu_sched")
|
|
};
|
|
|
|
static void __call_rcu(struct rcu_head *head,
|
|
void (*func)(struct rcu_head *rcu),
|
|
struct rcu_ctrlblk *rcp)
|
|
{
|
|
unsigned long flags;
|
|
|
|
// debug_rcu_head_queue(head);
|
|
head->func = func;
|
|
head->next = NULL;
|
|
|
|
local_irq_save(flags);
|
|
*rcp->curtail = head;
|
|
rcp->curtail = &head->next;
|
|
// RCU_TRACE(rcp->qlen++);
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
/*
|
|
* Post an RCU callback to be invoked after the end of an RCU-sched grace
|
|
* period. But since we have but one CPU, that would be after any
|
|
* quiescent state.
|
|
*/
|
|
void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
|
|
{
|
|
__call_rcu(head, func, &rcu_sched_ctrlblk);
|
|
}
|
|
|
|
int seq_puts(struct seq_file *m, const char *s)
|
|
{
|
|
return 0;
|
|
};
|
|
|
|
__printf(2, 3) int seq_printf(struct seq_file *m, const char *f, ...)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
ktime_t ktime_get(void)
|
|
{
|
|
ktime_t t;
|
|
|
|
t.tv64 = GetClockNs();
|
|
|
|
return t;
|
|
}
|
|
|
|
char *strdup(const char *str)
|
|
{
|
|
size_t len = strlen(str) + 1;
|
|
char *copy = __builtin_malloc(len);
|
|
if (copy)
|
|
{
|
|
memcpy (copy, str, len);
|
|
}
|
|
return copy;
|
|
}
|
|
|
|
int split_cmdline(char *cmdline, char **argv)
|
|
{
|
|
enum quote_state
|
|
{
|
|
QUOTE_NONE, /* no " active in current parm */
|
|
QUOTE_DELIMITER, /* " was first char and must be last */
|
|
QUOTE_STARTED /* " was seen, look for a match */
|
|
};
|
|
|
|
enum quote_state state;
|
|
unsigned int argc;
|
|
char *p = cmdline;
|
|
char *new_arg, *start;
|
|
|
|
argc = 0;
|
|
|
|
for(;;)
|
|
{
|
|
/* skip over spaces and tabs */
|
|
if ( *p )
|
|
{
|
|
while (*p == ' ' || *p == '\t')
|
|
++p;
|
|
}
|
|
|
|
if (*p == '\0')
|
|
break;
|
|
|
|
state = QUOTE_NONE;
|
|
if( *p == '\"' )
|
|
{
|
|
p++;
|
|
state = QUOTE_DELIMITER;
|
|
}
|
|
new_arg = start = p;
|
|
for (;;)
|
|
{
|
|
if( *p == '\"' )
|
|
{
|
|
p++;
|
|
if( state == QUOTE_NONE )
|
|
{
|
|
state = QUOTE_STARTED;
|
|
}
|
|
else
|
|
{
|
|
state = QUOTE_NONE;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if( *p == ' ' || *p == '\t' )
|
|
{
|
|
if( state == QUOTE_NONE )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if( *p == '\0' )
|
|
break;
|
|
|
|
if( *p == '\\' )
|
|
{
|
|
if( p[1] == '\"' )
|
|
{
|
|
++p;
|
|
if( p[-2] == '\\' )
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
if( argv )
|
|
{
|
|
*(new_arg++) = *p;
|
|
}
|
|
++p;
|
|
};
|
|
|
|
if( argv )
|
|
{
|
|
argv[ argc ] = start;
|
|
++argc;
|
|
|
|
/*
|
|
The *new = '\0' is req'd in case there was a \" to "
|
|
translation. It must be after the *p check against
|
|
'\0' because new and p could point to the same char
|
|
in which case the scan would be terminated too soon.
|
|
*/
|
|
|
|
if( *p == '\0' )
|
|
{
|
|
*new_arg = '\0';
|
|
break;
|
|
}
|
|
*new_arg = '\0';
|
|
++p;
|
|
}
|
|
else
|
|
{
|
|
++argc;
|
|
if( *p == '\0' )
|
|
{
|
|
break;
|
|
}
|
|
++p;
|
|
}
|
|
}
|
|
|
|
return argc;
|
|
};
|
|
|
|
|
|
fb_get_options(const char *name, char **option)
|
|
{
|
|
char *opt, *options = NULL;
|
|
int retval = 1;
|
|
int name_len;
|
|
|
|
if(i915.cmdline_mode == NULL)
|
|
return 1;
|
|
|
|
name_len = __builtin_strlen(name);
|
|
|
|
if (name_len )
|
|
{
|
|
opt = i915.cmdline_mode;
|
|
if (!__builtin_strncmp(name, opt, name_len) &&
|
|
opt[name_len] == ':')
|
|
{
|
|
options = opt + name_len + 1;
|
|
retval = 0;
|
|
}
|
|
}
|
|
|
|
if (option)
|
|
*option = options;
|
|
|
|
return retval;
|
|
}
|