X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fcga.c;h=3f137e615890c5f9710a7f7dfd604b246972797e;hb=d46ec4b471af03e5e7562aeec4b26a2701671a01;hp=6c82c585dffe3e48f4ecfd58bac894cabe7d9adb;hpb=d5501026e216b95658768c80c7301b81826d5f3d;p=palacios.git diff --git a/palacios/src/devices/cga.c b/palacios/src/devices/cga.c index 6c82c58..3f137e6 100644 --- a/palacios/src/devices/cga.c +++ b/palacios/src/devices/cga.c @@ -23,6 +23,7 @@ #include #include #include +#include #include @@ -51,6 +52,7 @@ struct video_internal { uint8_t * framebuf; + addr_t framebuf_pa; // These store the values for unhandled ports, in case of a read op uint8_t port_store[44]; @@ -68,6 +70,8 @@ struct video_internal { // so we need a temp variable to hold the partial update uint16_t tmp_screen_offset; + struct vm_device * dev; + uint8_t passthrough; @@ -115,7 +119,7 @@ static void passthrough_out(uint16_t port, void * src, uint_t length) { } } -static int video_write_mem(addr_t guest_addr, void * dest, uint_t length, void * priv_data) { +static int video_write_mem(struct guest_info * core, addr_t guest_addr, void * dest, uint_t length, void * priv_data) { struct vm_device * dev = (struct vm_device *)priv_data; struct video_internal * state = (struct video_internal *)dev->private_data; uint_t fb_offset = guest_addr - START_ADDR; @@ -148,8 +152,8 @@ static int video_write_mem(addr_t guest_addr, void * dest, uint_t length, void * return length; } -static int video_read_port(uint16_t port, void * dest, uint_t length, struct vm_device * dev) { - struct video_internal * video_state = (struct video_internal *)dev->private_data; +static int video_read_port(struct guest_info * core, uint16_t port, void * dest, uint_t length, void * priv_data) { + struct video_internal * video_state = priv_data; PrintDebug("Video: Read port 0x%x\n", port); @@ -163,8 +167,8 @@ static int video_read_port(uint16_t port, void * dest, uint_t length, struct vm_ -static int video_write_port(uint16_t port, void * src, uint_t length, struct vm_device * dev) { - struct video_internal * video_state = (struct video_internal *)dev->private_data; +static int video_write_port(struct guest_info * core, uint16_t port, void * src, uint_t length, void * priv_data) { + struct video_internal * video_state = priv_data; PrintDebug("Video: write port 0x%x...\n", port); @@ -178,8 +182,8 @@ static int video_write_port(uint16_t port, void * src, uint_t length, struct vm_ -static int crtc_data_write(uint16_t port, void * src, uint_t length, struct vm_device * dev) { - struct video_internal * video_state = (struct video_internal *)dev->private_data; +static int crtc_data_write(struct guest_info * core, uint16_t port, void * src, uint_t length, void * priv_data) { + struct video_internal * video_state = priv_data; uint8_t val = *(uint8_t *)src; uint_t index = video_state->crtc_index_reg; @@ -257,16 +261,15 @@ static int crtc_data_write(uint16_t port, void * src, uint_t length, struct vm_d } -static int crtc_index_write(uint16_t port, void * src, uint_t length, struct vm_device * dev) { - struct video_internal * video_state = (struct video_internal *)dev->private_data; +static int crtc_index_write(struct guest_info * core, uint16_t port, void * src, uint_t length, void * priv_data) { + struct video_internal * video_state = priv_data; if (length > 2) { PrintError("Invalid write length for crtc index register port: %d (0x%x)\n", port, port); return -1; } - - + video_state->crtc_index_reg = *(uint8_t *)src; // Only do the passthrough IO for the first byte @@ -276,7 +279,7 @@ static int crtc_index_write(uint16_t port, void * src, uint_t length, struct vm_ } if (length == 2) { - if (crtc_data_write(port + 1, src + 1, length - 1, dev) != (length - 1)) { + if (crtc_data_write(core, port + 1, src + 1, length - 1, video_state) != (length - 1)) { PrintError("could not handle implicit crtc data write\n"); return -1; } @@ -294,6 +297,11 @@ int v3_cons_get_fb(struct vm_device * frontend_dev, uint8_t * dst, uint_t offset PrintDebug("Getting framebuffer for screen; framebuf=%p, screen_offset=%d, offset=%d, length=%d\n", state->framebuf, screen_byte_offset, offset, length); + V3_ASSERT(screen_byte_offset <= FRAMEBUF_SIZE - SCREEN_SIZE); + V3_ASSERT(offset < SCREEN_SIZE); + V3_ASSERT(length <= SCREEN_SIZE); + V3_ASSERT(offset + length <= SCREEN_SIZE); + memcpy(dst, state->framebuf + screen_byte_offset + offset, length); return 0; @@ -301,107 +309,122 @@ int v3_cons_get_fb(struct vm_device * frontend_dev, uint8_t * dst, uint_t offset -static int free_device(struct vm_device * dev) { - v3_unhook_mem(dev->vm, START_ADDR); +static int free_cga(struct video_internal * video_state) { + + if (video_state->framebuf_pa) { + PrintError("Freeing framebuffer PA %p\n", (void *)(video_state->framebuf_pa)); + V3_FreePages((void *)(video_state->framebuf_pa), (FRAMEBUF_SIZE / 4096)); + } + + v3_unhook_mem(video_state->dev->vm, V3_MEM_CORE_ANY, START_ADDR); + + V3_Free(video_state); + return 0; } - static struct v3_device_ops dev_ops = { - .free = free_device, - .reset = NULL, - .start = NULL, - .stop = NULL, + .free = (int (*)(void *))free_cga, }; -static int cga_init(struct guest_info * vm, v3_cfg_tree_t * cfg) { - struct video_internal * video_state = (struct video_internal *)V3_Malloc(sizeof(struct video_internal)); - addr_t frame_buf_pa = 0; - int enable_passthrough = 0; - char * name = v3_cfg_val(cfg, "name"); - - enable_passthrough = (strcasecmp(v3_cfg_val(cfg, "passthrough"), "enable") == 0) ? 1 : 0; - +static int cga_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { + struct video_internal * video_state = NULL; + char * dev_id = v3_cfg_val(cfg, "ID"); + char * passthrough_str = v3_cfg_val(cfg, "passthrough"); + int ret = 0; + PrintDebug("video: init_device\n"); - struct vm_device * dev = v3_allocate_device(name, &dev_ops, video_state); + video_state = (struct video_internal *)V3_Malloc(sizeof(struct video_internal)); + memset(video_state, 0, sizeof(struct video_internal)); + + struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, video_state); - if (v3_attach_device(vm, dev) == -1) { - PrintError("Could not attach device %s\n", name); + if (dev == NULL) { + PrintError("Could not attach device %s\n", dev_id); + V3_Free(video_state); return -1; } + + video_state->dev = dev; - frame_buf_pa = (addr_t)V3_AllocPages(FRAMEBUF_SIZE / 4096); - - video_state->framebuf = V3_VAddr((void *)frame_buf_pa); + video_state->framebuf_pa = (addr_t)V3_AllocPages(FRAMEBUF_SIZE / 4096); + video_state->framebuf = V3_VAddr((void *)(video_state->framebuf_pa)); memset(video_state->framebuf, 0, FRAMEBUF_SIZE); - PrintDebug("PA of array: %p\n", (void *)frame_buf_pa); + PrintDebug("PA of array: %p\n", (void *)(video_state->framebuf_pa)); - video_state->passthrough = enable_passthrough; + if ((passthrough_str != NULL) && + (strcasecmp(passthrough_str, "enable") == 0)) {; + video_state->passthrough = 1; + } - video_state->ops = NULL; - video_state->private_data = NULL; - if (enable_passthrough) { + if (video_state->passthrough) { PrintDebug("Enabling CGA Passthrough\n"); - - if (v3_hook_write_mem(vm, START_ADDR, END_ADDR, START_ADDR, &video_write_mem, dev) == -1) { + if (v3_hook_write_mem(vm, V3_MEM_CORE_ANY, START_ADDR, END_ADDR, + START_ADDR, &video_write_mem, dev) == -1) { PrintDebug("\n\nVideo Hook failed.\n\n"); } } else { - if (v3_hook_write_mem(vm, START_ADDR, END_ADDR, frame_buf_pa, &video_write_mem, dev) == -1) { + if (v3_hook_write_mem(vm, V3_MEM_CORE_ANY, START_ADDR, END_ADDR, + video_state->framebuf_pa, &video_write_mem, dev) == -1) { PrintDebug("\n\nVideo Hook failed.\n\n"); } } - v3_dev_hook_io(dev, 0x3b0, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3b1, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3b2, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3b3, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3b4, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3b5, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3b6, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3b7, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3b8, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3b9, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3ba, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3bb, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c0, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c1, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c2, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c3, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c4, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c5, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c6, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c7, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c8, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3c9, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3ca, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3cb, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3cc, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3cd, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3ce, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3cf, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3d0, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3d1, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3d2, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3d3, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3d4, &video_read_port, &crtc_index_write); - v3_dev_hook_io(dev, 0x3d5, &video_read_port, &crtc_data_write); - v3_dev_hook_io(dev, 0x3d6, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3d7, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3d8, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3d9, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3da, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3db, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3dc, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3dd, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3de, &video_read_port, &video_write_port); - v3_dev_hook_io(dev, 0x3df, &video_read_port, &video_write_port); - + ret |= v3_dev_hook_io(dev, 0x3b0, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3b1, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3b2, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3b3, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3b4, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3b5, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3b6, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3b7, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3b8, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3b9, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3ba, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3bb, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c0, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c1, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c2, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c3, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c4, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c5, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c6, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c7, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c8, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3c9, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3ca, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3cb, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3cc, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3cd, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3ce, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3cf, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3d0, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3d1, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3d2, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3d3, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3d4, &video_read_port, &crtc_index_write); + ret |= v3_dev_hook_io(dev, 0x3d5, &video_read_port, &crtc_data_write); + ret |= v3_dev_hook_io(dev, 0x3d6, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3d7, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3d8, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3d9, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3da, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3db, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3dc, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3dd, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3de, &video_read_port, &video_write_port); + ret |= v3_dev_hook_io(dev, 0x3df, &video_read_port, &video_write_port); + + if (ret != 0) { + PrintError("Error allocating cga io port\n"); + v3_remove_device(dev); + return -1; + } return 0; }