4 Commits

Author	SHA1	Message	Date
Werner Almesberger	0dbf29e599	physmem.c: improved correctness and efficiency of alignment ... - physmem.c (align_brk): don't waste memory if already aligned - physmem.c (ALIGN, calloc_phys_vec): align by DMA transfer size - physmem.c (calloc_phys_vec): make sure allocations don't straddle page boundaries - physmem.c (xlat_one): print "unsigned long" with %lx, not %x	2011-05-02 04:43:18 -03:00
Werner Almesberger	6cd21404cd	physmem.c: added virtual to physical translation ... - physmem.c (calloc_phys_vec): malloc the vector instead of sbrk'ing it - ubb-vga.h (xlat_virt), physmem.c (xlat_one, xlat_virt): translate a vector of virtual addresses to physical addresses	2011-04-29 21:15:27 -03:00
Werner Almesberger	debe9cc351	physmem.c: align memory to word and page size ... - physmem.c (align_sbrk): align the end of the data segment - physmem.c (calloc_phys_vec): align the line pointer vector to a machine word, just in case - physmem.c (calloc_phys_vec): crudely align the line buffers within pages, to avoid page-crossing within a line (yes, this does reduce noise)	2011-04-29 14:01:17 -03:00
Werner Almesberger	623f3ccbe3	ubb-vga2: non-contiguous allocation of frame buffer memory ... - ubb-vga.h (calloc_phys_vec), physmem.c: non-contiguous memory allocator (for now, without really considering any mapping to physical memory) - Makefile (OBJS): added physmem.o - ubb-vga.h (grabfb), grabfb.c (grabfb): API change for non-contiguous frame buffer - ubb-vga.h (ppmimg), ppmimg.c (convert, ppmimg): API change for non-contiguous frame buffer - ubb-vga.h (tstimg), tstimg.c (pixel, color_bars, grill, grid, sides, dot, line45, arc, printc, text, ctext, tstimg): API change for non-contiguous frame buffer - tstimg.c (tstimg): we no longer need to clear the frame buffer - ubb-vga.c (frame, session, main): use a vector of line buffers instead of a contiguous frame buffer	2011-04-29 13:04:02 -03:00