1 // SPDX-License-Identifier: GPL-2.0-or-later
4     btcx-risc.c
8     (c) 2000-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
23 #include "btcx-risc.h"
36 /* ---------------------------------------------------------- */
44 	if (NULL == risc->cpu)  in btcx_riscmem_free()
47 	memcnt--;  in btcx_riscmem_free()
49 		memcnt, (unsigned long)risc->dma);  in btcx_riscmem_free()
51 	pci_free_consistent(pci, risc->size, risc->cpu, risc->dma);  in btcx_riscmem_free()
62 	if (NULL != risc->cpu && risc->size < size)  in btcx_riscmem_alloc()
64 	if (NULL == risc->cpu) {  in btcx_riscmem_alloc()
67 			return -ENOMEM;  in btcx_riscmem_alloc()
68 		risc->cpu  = cpu;  in btcx_riscmem_alloc()
69 		risc->dma  = dma;  in btcx_riscmem_alloc()
70 		risc->size = size;  in btcx_riscmem_alloc()
76 	memset(risc->cpu,0,risc->size);  in btcx_riscmem_alloc()
80 /* ---------------------------------------------------------- */
87 	if (win->left < 0) {  in btcx_screen_clips()
88 		/* left */  in btcx_screen_clips()
89 		clips[n].c.left = 0;  in btcx_screen_clips()
90 		clips[n].c.top = 0;  in btcx_screen_clips()
91 		clips[n].c.width  = -win->left;  in btcx_screen_clips()
92 		clips[n].c.height = win->height;  in btcx_screen_clips()
95 	if (win->left + win->width > swidth) {  in btcx_screen_clips()
97 		clips[n].c.left   = swidth - win->left;  in btcx_screen_clips()
98 		clips[n].c.top    = 0;  in btcx_screen_clips()
99 		clips[n].c.width  = win->width - clips[n].c.left;  in btcx_screen_clips()
100 		clips[n].c.height = win->height;  in btcx_screen_clips()
103 	if (win->top < 0) {  in btcx_screen_clips()
104 		/* top */  in btcx_screen_clips()
105 		clips[n].c.left = 0;  in btcx_screen_clips()
106 		clips[n].c.top = 0;  in btcx_screen_clips()
107 		clips[n].c.width  = win->width;  in btcx_screen_clips()
108 		clips[n].c.height = -win->top;  in btcx_screen_clips()
111 	if (win->top + win->height > sheight) {  in btcx_screen_clips()
113 		clips[n].c.left = 0;  in btcx_screen_clips()
114 		clips[n].c.top = sheight - win->top;  in btcx_screen_clips()
115 		clips[n].c.width  = win->width;  in btcx_screen_clips()
116 		clips[n].c.height = win->height - clips[n].c.top;  in btcx_screen_clips()
129 	nx = (win->left + mask) & ~mask;  in btcx_align()
130 	nw = (win->width) & ~mask;  in btcx_align()
131 	if (nx + nw > win->left + win->width)  in btcx_align()
132 		nw -= mask+1;  in btcx_align()
133 	dx = nx - win->left;  in btcx_align()
134 	win->left  = nx;  in btcx_align()
135 	win->width = nw;  in btcx_align()
137 	       win->width, win->height, win->left, win->top, dx);  in btcx_align()
141 		nx = (clips[i].c.left-dx) & ~mask;  in btcx_align()
143 		if (nx + nw < clips[i].c.left-dx + clips[i].c.width)  in btcx_align()
145 		clips[i].c.left  = nx;  in btcx_align()
149 		       clips[i].c.left, clips[i].c.top);  in btcx_align()
161 	for (i = nclips-2; i >= 0; i--) {  in btcx_sort_clips()
163 			if (clips[j].c.left > clips[j+1].c.left) {  in btcx_sort_clips()
186 		if (clips[clip].c.left + clips[clip].c.width <= 0)  in btcx_calc_skips()
188 		if (clips[clip].c.left > (signed)width)  in btcx_calc_skips()
192 		if (line > clips[clip].c.top+clips[clip].c.height-1)  in btcx_calc_skips()
194 		if (line < clips[clip].c.top) {  in btcx_calc_skips()
195 			if (maxline > clips[clip].c.top-1)  in btcx_calc_skips()
196 				maxline = clips[clip].c.top-1;  in btcx_calc_skips()
199 		if (maxline > clips[clip].c.top+clips[clip].c.height-1)  in btcx_calc_skips()
200 			maxline = clips[clip].c.top+clips[clip].c.height-1;  in btcx_calc_skips()
203 		if (0 == skip || clips[clip].c.left > skips[skip-1].end) {  in btcx_calc_skips()
205 			skips[skip].start = clips[clip].c.left;  in btcx_calc_skips()
208 			skips[skip].end = clips[clip].c.left + clips[clip].c.width;  in btcx_calc_skips()
213 			/* overlaps -- expand last one */  in btcx_calc_skips()
214 			end = clips[clip].c.left + clips[clip].c.width;  in btcx_calc_skips()
215 			if (skips[skip-1].end < end)  in btcx_calc_skips()
216 				skips[skip-1].end = end;  in btcx_calc_skips()
217 			if (skips[skip-1].end > width)  in btcx_calc_skips()
218 				skips[skip-1].end = width;  in btcx_calc_skips()
225 		dprintk("btcx: skips line %d-%d:", line, maxline);  in btcx_calc_skips()
227 			pr_cont(" %d-%d", skips[skip].start, skips[skip].end);  in btcx_calc_skips()