diff options
Diffstat (limited to 'hw/display/xenfb.c')
| -rw-r--r-- | hw/display/xenfb.c | 260 |
1 files changed, 130 insertions, 130 deletions
diff --git a/hw/display/xenfb.c b/hw/display/xenfb.c index 50857cd97a..260eb38a76 100644 --- a/hw/display/xenfb.c +++ b/hw/display/xenfb.c @@ -76,7 +76,7 @@ struct XenFB { int do_resize; struct { - int x,y,w,h; + int x,y,w,h; } up_rects[UP_QUEUE]; int up_count; int up_fullscreen; @@ -116,32 +116,32 @@ static void common_unbind(struct common *c) xen_pv_unbind_evtchn(&c->xendev); if (c->page) { xenforeignmemory_unmap(xen_fmem, c->page, 1); - c->page = NULL; + c->page = NULL; } } /* -------------------------------------------------------------------- */ /* Send an event to the keyboard frontend driver */ static int xenfb_kbd_event(struct XenInput *xenfb, - union xenkbd_in_event *event) + union xenkbd_in_event *event) { struct xenkbd_page *page = xenfb->c.page; uint32_t prod; if (xenfb->c.xendev.be_state != XenbusStateConnected) - return 0; + return 0; if (!page) return 0; prod = page->in_prod; if (prod - page->in_cons == XENKBD_IN_RING_LEN) { - errno = EAGAIN; - return -1; + errno = EAGAIN; + return -1; } - xen_mb(); /* ensure ring space available */ + xen_mb(); /* ensure ring space available */ XENKBD_IN_RING_REF(page, prod) = *event; - xen_wmb(); /* ensure ring contents visible */ + xen_wmb(); /* ensure ring contents visible */ page->in_prod = prod + 1; return xen_pv_send_notify(&xenfb->c.xendev); } @@ -161,7 +161,7 @@ static int xenfb_send_key(struct XenInput *xenfb, bool down, int keycode) /* Send a relative mouse movement event */ static int xenfb_send_motion(struct XenInput *xenfb, - int rel_x, int rel_y, int rel_z) + int rel_x, int rel_y, int rel_z) { union xenkbd_in_event event; @@ -176,7 +176,7 @@ static int xenfb_send_motion(struct XenInput *xenfb, /* Send an absolute mouse movement event */ static int xenfb_send_position(struct XenInput *xenfb, - int abs_x, int abs_y, int z) + int abs_x, int abs_y, int z) { union xenkbd_in_event event; @@ -354,7 +354,7 @@ static int input_initialise(struct XenLegacyDevice *xendev) rc = common_bind(&in->c); if (rc != 0) - return rc; + return rc; return 0; } @@ -415,7 +415,7 @@ static void input_event(struct XenLegacyDevice *xendev) /* We don't understand any keyboard events, so just ignore them. */ if (page->out_prod == page->out_cons) - return; + return; page->out_cons = page->out_prod; xen_pv_send_notify(&xenfb->c.xendev); } @@ -429,7 +429,7 @@ static void xenfb_copy_mfns(int mode, int count, xen_pfn_t *dst, void *src) int i; for (i = 0; i < count; i++) - dst[i] = (mode == 32) ? src32[i] : src64[i]; + dst[i] = (mode == 32) ? src32[i] : src64[i]; } static int xenfb_map_fb(struct XenFB *xenfb) @@ -447,43 +447,43 @@ static int xenfb_map_fb(struct XenFB *xenfb) mode = sizeof(unsigned long) * 8; if (!protocol) { - /* - * Undefined protocol, some guesswork needed. - * - * Old frontends which don't set the protocol use - * one page directory only, thus pd[1] must be zero. - * pd[1] of the 32bit struct layout and the lower - * 32 bits of pd[0] of the 64bit struct layout have - * the same location, so we can check that ... - */ - uint32_t *ptr32 = NULL; - uint32_t *ptr64 = NULL; + /* + * Undefined protocol, some guesswork needed. + * + * Old frontends which don't set the protocol use + * one page directory only, thus pd[1] must be zero. + * pd[1] of the 32bit struct layout and the lower + * 32 bits of pd[0] of the 64bit struct layout have + * the same location, so we can check that ... + */ + uint32_t *ptr32 = NULL; + uint32_t *ptr64 = NULL; #if defined(__i386__) - ptr32 = (void*)page->pd; - ptr64 = ((void*)page->pd) + 4; + ptr32 = (void*)page->pd; + ptr64 = ((void*)page->pd) + 4; #elif defined(__x86_64__) - ptr32 = ((void*)page->pd) - 4; - ptr64 = (void*)page->pd; + ptr32 = ((void*)page->pd) - 4; + ptr64 = (void*)page->pd; #endif - if (ptr32) { - if (ptr32[1] == 0) { - mode = 32; - pd = ptr32; - } else { - mode = 64; - pd = ptr64; - } - } + if (ptr32) { + if (ptr32[1] == 0) { + mode = 32; + pd = ptr32; + } else { + mode = 64; + pd = ptr64; + } + } #if defined(__x86_64__) } else if (strcmp(protocol, XEN_IO_PROTO_ABI_X86_32) == 0) { - /* 64bit dom0, 32bit domU */ - mode = 32; - pd = ((void*)page->pd) - 4; + /* 64bit dom0, 32bit domU */ + mode = 32; + pd = ((void*)page->pd) - 4; #elif defined(__i386__) } else if (strcmp(protocol, XEN_IO_PROTO_ABI_X86_64) == 0) { - /* 32bit dom0, 64bit domU */ - mode = 64; - pd = ((void*)page->pd) + 4; + /* 32bit dom0, 64bit domU */ + mode = 64; + pd = ((void*)page->pd) + 4; #endif } @@ -503,14 +503,14 @@ static int xenfb_map_fb(struct XenFB *xenfb) map = xenforeignmemory_map(xen_fmem, xenfb->c.xendev.dom, PROT_READ, n_fbdirs, pgmfns, NULL); if (map == NULL) - goto out; + goto out; xenfb_copy_mfns(mode, xenfb->fbpages, fbmfns, map); xenforeignmemory_unmap(xen_fmem, map, n_fbdirs); xenfb->pixels = xenforeignmemory_map(xen_fmem, xenfb->c.xendev.dom, PROT_READ, xenfb->fbpages, fbmfns, NULL); if (xenfb->pixels == NULL) - goto out; + goto out; ret = 0; /* all is fine */ @@ -589,35 +589,35 @@ static int xenfb_configure_fb(struct XenFB *xenfb, size_t fb_len_lim, /* A convenient function for munging pixels between different depths */ #define BLT(SRC_T,DST_T,RSB,GSB,BSB,RDB,GDB,BDB) \ - for (line = y ; line < (y+h) ; line++) { \ - SRC_T *src = (SRC_T *)(xenfb->pixels \ - + xenfb->offset \ - + (line * xenfb->row_stride) \ - + (x * xenfb->depth / 8)); \ - DST_T *dst = (DST_T *)(data \ - + (line * linesize) \ - + (x * bpp / 8)); \ - int col; \ - const int RSS = 32 - (RSB + GSB + BSB); \ - const int GSS = 32 - (GSB + BSB); \ - const int BSS = 32 - (BSB); \ - const uint32_t RSM = (~0U) << (32 - RSB); \ - const uint32_t GSM = (~0U) << (32 - GSB); \ - const uint32_t BSM = (~0U) << (32 - BSB); \ - const int RDS = 32 - (RDB + GDB + BDB); \ - const int GDS = 32 - (GDB + BDB); \ - const int BDS = 32 - (BDB); \ - const uint32_t RDM = (~0U) << (32 - RDB); \ - const uint32_t GDM = (~0U) << (32 - GDB); \ - const uint32_t BDM = (~0U) << (32 - BDB); \ - for (col = x ; col < (x+w) ; col++) { \ - uint32_t spix = *src; \ - *dst = (((spix << RSS) & RSM & RDM) >> RDS) | \ - (((spix << GSS) & GSM & GDM) >> GDS) | \ - (((spix << BSS) & BSM & BDM) >> BDS); \ - src = (SRC_T *) ((unsigned long) src + xenfb->depth / 8); \ - dst = (DST_T *) ((unsigned long) dst + bpp / 8); \ - } \ + for (line = y ; line < (y+h) ; line++) { \ + SRC_T *src = (SRC_T *)(xenfb->pixels \ + + xenfb->offset \ + + (line * xenfb->row_stride) \ + + (x * xenfb->depth / 8)); \ + DST_T *dst = (DST_T *)(data \ + + (line * linesize) \ + + (x * bpp / 8)); \ + int col; \ + const int RSS = 32 - (RSB + GSB + BSB); \ + const int GSS = 32 - (GSB + BSB); \ + const int BSS = 32 - (BSB); \ + const uint32_t RSM = (~0U) << (32 - RSB); \ + const uint32_t GSM = (~0U) << (32 - GSB); \ + const uint32_t BSM = (~0U) << (32 - BSB); \ + const int RDS = 32 - (RDB + GDB + BDB); \ + const int GDS = 32 - (GDB + BDB); \ + const int BDS = 32 - (BDB); \ + const uint32_t RDM = (~0U) << (32 - RDB); \ + const uint32_t GDM = (~0U) << (32 - GDB); \ + const uint32_t BDM = (~0U) << (32 - BDB); \ + for (col = x ; col < (x+w) ; col++) { \ + uint32_t spix = *src; \ + *dst = (((spix << RSS) & RSM & RDM) >> RDS) | \ + (((spix << GSS) & GSM & GDM) >> GDS) | \ + (((spix << BSS) & BSM & BDM) >> BDS); \ + src = (SRC_T *) ((unsigned long) src + xenfb->depth / 8); \ + dst = (DST_T *) ((unsigned long) dst + bpp / 8); \ + } \ } @@ -657,7 +657,7 @@ static void xenfb_guest_copy(struct XenFB *xenfb, int x, int y, int w, int h) break; default: oops = 1; - } + } } if (oops) /* should not happen */ xen_pv_printf(&xenfb->c.xendev, 0, "%s: oops: convert %d -> %d bpp?\n", @@ -816,60 +816,60 @@ static void xenfb_handle_events(struct XenFB *xenfb) if (prod - out_cons > XENFB_OUT_RING_LEN) { return; } - xen_rmb(); /* ensure we see ring contents up to prod */ + xen_rmb(); /* ensure we see ring contents up to prod */ for (cons = out_cons; cons != prod; cons++) { - union xenfb_out_event *event = &XENFB_OUT_RING_REF(page, cons); + union xenfb_out_event *event = &XENFB_OUT_RING_REF(page, cons); uint8_t type = event->type; - int x, y, w, h; - - switch (type) { - case XENFB_TYPE_UPDATE: - if (xenfb->up_count == UP_QUEUE) - xenfb->up_fullscreen = 1; - if (xenfb->up_fullscreen) - break; - x = MAX(event->update.x, 0); - y = MAX(event->update.y, 0); - w = MIN(event->update.width, xenfb->width - x); - h = MIN(event->update.height, xenfb->height - y); - if (w < 0 || h < 0) { + int x, y, w, h; + + switch (type) { + case XENFB_TYPE_UPDATE: + if (xenfb->up_count == UP_QUEUE) + xenfb->up_fullscreen = 1; + if (xenfb->up_fullscreen) + break; + x = MAX(event->update.x, 0); + y = MAX(event->update.y, 0); + w = MIN(event->update.width, xenfb->width - x); + h = MIN(event->update.height, xenfb->height - y); + if (w < 0 || h < 0) { xen_pv_printf(&xenfb->c.xendev, 1, "bogus update ignored\n"); - break; - } - if (x != event->update.x || + break; + } + if (x != event->update.x || y != event->update.y || - w != event->update.width || - h != event->update.height) { + w != event->update.width || + h != event->update.height) { xen_pv_printf(&xenfb->c.xendev, 1, "bogus update clipped\n"); - } - if (w == xenfb->width && h > xenfb->height / 2) { - /* scroll detector: updated more than 50% of the lines, - * don't bother keeping track of the rectangles then */ - xenfb->up_fullscreen = 1; - } else { - xenfb->up_rects[xenfb->up_count].x = x; - xenfb->up_rects[xenfb->up_count].y = y; - xenfb->up_rects[xenfb->up_count].w = w; - xenfb->up_rects[xenfb->up_count].h = h; - xenfb->up_count++; - } - break; + } + if (w == xenfb->width && h > xenfb->height / 2) { + /* scroll detector: updated more than 50% of the lines, + * don't bother keeping track of the rectangles then */ + xenfb->up_fullscreen = 1; + } else { + xenfb->up_rects[xenfb->up_count].x = x; + xenfb->up_rects[xenfb->up_count].y = y; + xenfb->up_rects[xenfb->up_count].w = w; + xenfb->up_rects[xenfb->up_count].h = h; + xenfb->up_count++; + } + break; #ifdef XENFB_TYPE_RESIZE - case XENFB_TYPE_RESIZE: - if (xenfb_configure_fb(xenfb, xenfb->fb_len, - event->resize.width, - event->resize.height, - event->resize.depth, - xenfb->fb_len, - event->resize.offset, - event->resize.stride) < 0) - break; - xenfb_invalidate(xenfb); - break; + case XENFB_TYPE_RESIZE: + if (xenfb_configure_fb(xenfb, xenfb->fb_len, + event->resize.width, + event->resize.height, + event->resize.depth, + xenfb->fb_len, + event->resize.offset, + event->resize.stride) < 0) + break; + xenfb_invalidate(xenfb); + break; #endif - } + } } - xen_mb(); /* ensure we're done with ring contents */ + xen_mb(); /* ensure we're done with ring contents */ page->out_cons = cons; } @@ -889,32 +889,32 @@ static int fb_initialise(struct XenLegacyDevice *xendev) int rc; if (xenstore_read_fe_int(xendev, "videoram", &videoram) == -1) - videoram = 0; + videoram = 0; rc = common_bind(&fb->c); if (rc != 0) - return rc; + return rc; fb_page = fb->c.page; rc = xenfb_configure_fb(fb, videoram * MiB, - fb_page->width, fb_page->height, fb_page->depth, - fb_page->mem_length, 0, fb_page->line_length); + fb_page->width, fb_page->height, fb_page->depth, + fb_page->mem_length, 0, fb_page->line_length); if (rc != 0) - return rc; + return rc; rc = xenfb_map_fb(fb); if (rc != 0) - return rc; + return rc; fb->con = graphic_console_init(NULL, 0, &xenfb_ops, fb); if (xenstore_read_fe_int(xendev, "feature-update", &fb->feature_update) == -1) - fb->feature_update = 0; + fb->feature_update = 0; if (fb->feature_update) - xenstore_write_be_int(xendev, "request-update", 1); + xenstore_write_be_int(xendev, "request-update", 1); xen_pv_printf(xendev, 1, "feature-update=%d, videoram=%d\n", - fb->feature_update, videoram); + fb->feature_update, videoram); return 0; } |