#define MAX_ROM_SCAN 0x10000
-#define OH_ALLOC_SIZE 4000
-#define SENTINEL 0x7fffffff
-
#define SEQ_ADR 0x14
#define SEQ_DATA 0x15
#define DAC_ADR 0x18
/* global flags */
static int XGIfb_registered;
static int XGIfb_tvmode = 0;
-static int XGIfb_mem = 0;
static int XGIfb_pdc = 0;
static int enable_dstn = 0;
static int XGIfb_ypan = -1;
{ 0, 0, "" , "" }
};
-typedef struct _XGI_OH {
- struct _XGI_OH *poh_next;
- struct _XGI_OH *poh_prev;
- unsigned long offset;
- unsigned long size;
-} XGI_OH;
-
-typedef struct _XGI_OHALLOC {
- struct _XGI_OHALLOC *poha_next;
- XGI_OH aoh[1];
-} XGI_OHALLOC;
-
-typedef struct _XGI_HEAP {
- XGI_OH oh_free;
- XGI_OH oh_used;
- XGI_OH *poh_freelist;
- XGI_OHALLOC *poha_chain;
- unsigned long max_freesize;
-} XGI_HEAP;
-
-static unsigned long XGIfb_heap_start;
-static unsigned long XGIfb_heap_end;
-static unsigned long XGIfb_heap_size;
-static XGI_HEAP XGIfb_heap;
-
// Eden Chen
static const struct _XGI_TV_filter {
u8 filter[9][4];
static void XGIfb_pre_setmode(void);
static void XGIfb_post_setmode(void);
-struct XGI_memreq {
- unsigned long offset;
- unsigned long size;
-};
-
-/* XGI-specific Export functions */
-void XGI_malloc(struct XGI_memreq *req);
-void XGI_free(unsigned long base);
-
/* Internal hardware access routines */
void XGIfb_set_reg4(u16 port, unsigned long data);
u32 XGIfb_get_reg3(u16 port);
static int XGIfb_has_VB(void);
-/* Internal heap routines */
-static int XGIfb_heap_init(void);
-static XGI_OH *XGIfb_poh_new_node(void);
-static XGI_OH *XGIfb_poh_allocate(unsigned long size);
-static void XGIfb_delete_node(XGI_OH *poh);
-static void XGIfb_insert_node(XGI_OH *pohList, XGI_OH *poh);
-static XGI_OH *XGIfb_poh_free(unsigned long base);
-static void XGIfb_free_node(XGI_OH *poh);
-
/* Internal routines to access PCI configuration space */
unsigned char XGIfb_query_VGA_config_space(struct xgi_hw_device_info *pXGIhw_ext,
unsigned long offset,
fix->smem_len = xgi_video_info.video_size;
- /* if((!XGIfb_mem) || (XGIfb_mem > (xgi_video_info.video_size/1024))) {
- if (xgi_video_info.video_size > 0x1000000) {
- fix->smem_len = 0xD00000;
- } else if (xgi_video_info.video_size > 0x800000)
- fix->smem_len = 0x800000;
- else
- fix->smem_len = 0x400000;
- } else
- fix->smem_len = XGIfb_mem * 1024;
- */
fix->type = video_type;
fix->type_aux = 0;
if (xgi_video_info.video_bpp == 8)
outXGIIDXREG(XGIPART4, 0x0d, backupP4_0d);
}
-/* ------------------------ Heap routines -------------------------- */
-
-static int XGIfb_heap_init(void)
-{
- XGI_OH *poh;
-
- /* TW: The heap start is either set manually using the "mem" parameter, or
- * defaults as follows:
- * -) If more than 16MB videoRAM available, let our heap start at 12MB.
- * -) If more than 8MB videoRAM available, let our heap start at 8MB.
- * -) If 4MB or less is available, let it start at 4MB.
- * This is for avoiding a clash with X driver which uses the beginning
- * of the videoRAM. To limit size of X framebuffer, use Option MaxXFBMem
- * in XF86Config-4.
- * The heap start can also be specified by parameter "mem" when starting the XGIfb
- * driver. XGIfb mem=1024 lets heap starts at 1MB, etc.
- */
- if ((!XGIfb_mem) || (XGIfb_mem > (xgi_video_info.video_size / 1024))) {
- if (xgi_video_info.video_size > 0x1000000)
- xgi_video_info.heapstart = 0xD00000;
- else if (xgi_video_info.video_size > 0x800000)
- xgi_video_info.heapstart = 0x800000;
- else
- xgi_video_info.heapstart = 0x400000;
- } else {
- xgi_video_info.heapstart = XGIfb_mem * 1024;
- }
- XGIfb_heap_start = (unsigned long) (xgi_video_info.video_vbase
- + xgi_video_info.heapstart);
- printk(KERN_INFO "XGIfb: Memory heap starting at %dK\n",
- (int)(xgi_video_info.heapstart / 1024));
-
- XGIfb_heap_end = (unsigned long) xgi_video_info.video_vbase
- + xgi_video_info.video_size;
- XGIfb_heap_size = XGIfb_heap_end - XGIfb_heap_start;
-
- XGIfb_heap.poha_chain = NULL;
- XGIfb_heap.poh_freelist = NULL;
-
- poh = XGIfb_poh_new_node();
-
- if (poh == NULL)
- return 1;
-
- poh->poh_next = &XGIfb_heap.oh_free;
- poh->poh_prev = &XGIfb_heap.oh_free;
- poh->size = XGIfb_heap_end - XGIfb_heap_start + 1;
- poh->offset = XGIfb_heap_start - (unsigned long) xgi_video_info.video_vbase;
-
- DPRINTK("XGIfb: Heap start:0x%p, end:0x%p, len=%dk\n",
- (char *) XGIfb_heap_start, (char *) XGIfb_heap_end,
- (unsigned int) poh->size / 1024);
-
- DPRINTK("XGIfb: First Node offset:0x%x, size:%dk\n",
- (unsigned int) poh->offset, (unsigned int) poh->size / 1024);
-
- XGIfb_heap.oh_free.poh_next = poh;
- XGIfb_heap.oh_free.poh_prev = poh;
- XGIfb_heap.oh_free.size = 0;
- XGIfb_heap.max_freesize = poh->size;
-
- XGIfb_heap.oh_used.poh_next = &XGIfb_heap.oh_used;
- XGIfb_heap.oh_used.poh_prev = &XGIfb_heap.oh_used;
- XGIfb_heap.oh_used.size = SENTINEL;
-
- return 0;
-}
-
-static XGI_OH *XGIfb_poh_new_node(void)
-{
- int i;
- unsigned long cOhs;
- XGI_OHALLOC *poha;
- XGI_OH *poh;
-
- if (XGIfb_heap.poh_freelist == NULL) {
- poha = kmalloc(OH_ALLOC_SIZE, GFP_KERNEL);
- if (!poha)
- return NULL;
-
- poha->poha_next = XGIfb_heap.poha_chain;
- XGIfb_heap.poha_chain = poha;
-
- cOhs = (OH_ALLOC_SIZE - sizeof(XGI_OHALLOC)) / sizeof(XGI_OH)
- + 1;
-
- poh = &poha->aoh[0];
- for (i = cOhs - 1; i != 0; i--) {
- poh->poh_next = poh + 1;
- poh = poh + 1;
- }
-
- poh->poh_next = NULL;
- XGIfb_heap.poh_freelist = &poha->aoh[0];
- }
-
- poh = XGIfb_heap.poh_freelist;
- XGIfb_heap.poh_freelist = poh->poh_next;
-
- return poh;
-}
-
-static XGI_OH *XGIfb_poh_allocate(unsigned long size)
-{
- XGI_OH *pohThis;
- XGI_OH *pohRoot;
- int bAllocated = 0;
-
- if (size > XGIfb_heap.max_freesize) {
- DPRINTK("XGIfb: Can't allocate %dk size on offscreen\n",
- (unsigned int) size / 1024);
- return NULL;
- }
-
- pohThis = XGIfb_heap.oh_free.poh_next;
-
- while (pohThis != &XGIfb_heap.oh_free) {
- if (size <= pohThis->size) {
- bAllocated = 1;
- break;
- }
- pohThis = pohThis->poh_next;
- }
-
- if (!bAllocated) {
- DPRINTK("XGIfb: Can't allocate %dk size on offscreen\n",
- (unsigned int) size / 1024);
- return NULL;
- }
-
- if (size == pohThis->size) {
- pohRoot = pohThis;
- XGIfb_delete_node(pohThis);
- } else {
- pohRoot = XGIfb_poh_new_node();
-
- if (pohRoot == NULL)
- return NULL;
-
- pohRoot->offset = pohThis->offset;
- pohRoot->size = size;
-
- pohThis->offset += size;
- pohThis->size -= size;
- }
-
- XGIfb_heap.max_freesize -= size;
-
- pohThis = &XGIfb_heap.oh_used;
- XGIfb_insert_node(pohThis, pohRoot);
-
- return pohRoot;
-}
-
-static void XGIfb_delete_node(XGI_OH *poh)
-{
- XGI_OH *poh_prev;
- XGI_OH *poh_next;
-
- poh_prev = poh->poh_prev;
- poh_next = poh->poh_next;
-
- poh_prev->poh_next = poh_next;
- poh_next->poh_prev = poh_prev;
-
-}
-
-static void XGIfb_insert_node(XGI_OH *pohList, XGI_OH *poh)
-{
- XGI_OH *pohTemp;
-
- pohTemp = pohList->poh_next;
-
- pohList->poh_next = poh;
- pohTemp->poh_prev = poh;
-
- poh->poh_prev = pohList;
- poh->poh_next = pohTemp;
-}
-
-static XGI_OH *XGIfb_poh_free(unsigned long base)
-{
- XGI_OH *pohThis;
- XGI_OH *poh_freed;
- XGI_OH *poh_prev;
- XGI_OH *poh_next;
- unsigned long ulUpper;
- unsigned long ulLower;
- int foundNode = 0;
-
- poh_freed = XGIfb_heap.oh_used.poh_next;
-
- while (poh_freed != &XGIfb_heap.oh_used) {
- if (poh_freed->offset == base) {
- foundNode = 1;
- break;
- }
-
- poh_freed = poh_freed->poh_next;
- }
-
- if (!foundNode)
- return NULL;
-
- XGIfb_heap.max_freesize += poh_freed->size;
-
- poh_prev = poh_next = NULL;
- ulUpper = poh_freed->offset + poh_freed->size;
- ulLower = poh_freed->offset;
-
- pohThis = XGIfb_heap.oh_free.poh_next;
-
- while (pohThis != &XGIfb_heap.oh_free) {
- if (pohThis->offset == ulUpper)
- poh_next = pohThis;
- else if ((pohThis->offset + pohThis->size) == ulLower)
- poh_prev = pohThis;
-
- pohThis = pohThis->poh_next;
- }
-
- XGIfb_delete_node(poh_freed);
-
- if (poh_prev && poh_next) {
- poh_prev->size += (poh_freed->size + poh_next->size);
- XGIfb_delete_node(poh_next);
- XGIfb_free_node(poh_freed);
- XGIfb_free_node(poh_next);
- return poh_prev;
- }
-
- if (poh_prev) {
- poh_prev->size += poh_freed->size;
- XGIfb_free_node(poh_freed);
- return poh_prev;
- }
-
- if (poh_next) {
- poh_next->size += poh_freed->size;
- poh_next->offset = poh_freed->offset;
- XGIfb_free_node(poh_freed);
- return poh_next;
- }
-
- XGIfb_insert_node(&XGIfb_heap.oh_free, poh_freed);
-
- return poh_freed;
-}
-
-static void XGIfb_free_node(XGI_OH *poh)
-{
- if (poh == NULL)
- return;
-
- poh->poh_next = XGIfb_heap.poh_freelist;
- XGIfb_heap.poh_freelist = poh;
-
-}
-
-void XGI_malloc(struct XGI_memreq *req)
-{
- XGI_OH *poh;
-
- poh = XGIfb_poh_allocate(req->size);
-
- if (poh == NULL) {
- req->offset = 0;
- req->size = 0;
- DPRINTK("XGIfb: Video RAM allocation failed\n");
- } else {
- DPRINTK("XGIfb: Video RAM allocation succeeded: 0x%p\n",
- (char *) (poh->offset + (unsigned long) xgi_video_info.video_vbase));
-
- req->offset = poh->offset;
- req->size = poh->size;
- }
-
-}
-
-void XGI_free(unsigned long base)
-{
- XGI_OH *poh;
-
- poh = XGIfb_poh_free(base);
-
- if (poh == NULL) {
- DPRINTK("XGIfb: XGIfb_poh_free() failed at base 0x%x\n",
- (unsigned int) base);
- }
-}
-
/* --------------------- SetMode routines ------------------------- */
static void XGIfb_pre_setmode(void)
XGIfb_search_tvstd(this_opt + 7);
} else if (!strncmp(this_opt, "tvstandard:", 11)) {
XGIfb_search_tvstd(this_opt + 7);
- } else if (!strncmp(this_opt, "mem:", 4)) {
- XGIfb_mem = simple_strtoul(this_opt + 4, NULL, 0);
} else if (!strncmp(this_opt, "dstn", 4)) {
enable_dstn = 1;
/* TW: DSTN overrules forcecrt2type */
else
printk("Fail\n");
- if (XGIfb_heap_init())
- printk(KERN_WARNING "XGIfb: Failed to initialize offscreen memory heap\n");
-
xgi_video_info.mtrr = (unsigned int) 0;
if ((xgifb_mode_idx < 0) || ((XGIbios_mode[xgifb_mode_idx].mode_no) != 0xFF)) {
module_param(videoram, int, 0);
#endif
-MODULE_PARM_DESC(mem,
- "\nDetermines the beginning of the video memory heap in KB. This heap is used\n"
- "for video RAM management for eg. DRM/DRI. On 300 series, the default depends\n"
- "on the amount of video RAM available. If 8MB of video RAM or less is available,\n"
- "the heap starts at 4096KB, if between 8 and 16MB are available at 8192KB,\n"
- "otherwise at 12288KB. On 315 and Xabre series, the heap size is 32KB by default.\n"
- "The value is to be specified without 'KB' and must match the MaxXFBMem setting\n"
- "for XFree86 4.x/X.org 6.7 and later.\n");
-
MODULE_PARM_DESC(noypan,
"\nIf set to anything other than 0, y-panning will be disabled and scrolling\n"
"will be performed by redrawing the screen. (default: 0)\n");
module_exit(xgifb_remove_module);
#endif /* /MODULE */
-
-EXPORT_SYMBOL(XGI_malloc);
-EXPORT_SYMBOL(XGI_free);
-
projects / karo-tx-linux.git / commitdiff