52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
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#include "basic_include.h"
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#include "lib/multimedia/msi.h"
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static int32 msi_rbuffer_fb_exist(struct rbuffer *rb, struct framebuff *fb, uint32 start, uint32 end)
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{
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uint32 i = 0;
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struct framebuff **q = (struct framebuff **)rb->rbq;
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for (i = start; i < end; i++) {
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if (q[i] == fb) {
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return 1;
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} else {
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struct framebuff *next = q[i]->next;
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while (next) {
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if (next == fb) {
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return 1;
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} else {
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next = next;
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}
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}
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}
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}
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return 0;
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}
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int32 msi_rbuffer_trace_fb(struct msi *mif, struct rbuffer *rb, struct framebuff *fb)
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{
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uint32 rpos = rb->rpos;
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uint32 wpos = rb->wpos;
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if (!RB_EMPTY(rb)) {
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if (rpos < wpos) {
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if (msi_rbuffer_fb_exist(rb, fb, rpos, wpos)) {
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os_printf(KERN_NOTICE"MSI %s: FB %p is here!\r\n", mif->name, fb);
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return 1;
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}
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} else {
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if (msi_rbuffer_fb_exist(rb, fb, rpos, rb->qsize)) {
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os_printf(KERN_NOTICE"MSI %s: FB %p is here!\r\n", mif->name, fb);
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return 1;
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}
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if (msi_rbuffer_fb_exist(rb, fb, 0, wpos)) {
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os_printf(KERN_NOTICE"MSI %s: FB %p is here!\r\n", mif->name, fb);
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return 1;
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}
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}
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}
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return 0;
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}
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