ppc/pnv: Add a HIOMAP erase command
[qemu.git] / include / hw / display / bcm2835_fb.h
1 /*
2 * Raspberry Pi emulation (c) 2012 Gregory Estrade
3 * Upstreaming code cleanup [including bcm2835_*] (c) 2013 Jan Petrous
4 *
5 * Rasperry Pi 2 emulation and refactoring Copyright (c) 2015, Microsoft
6 * Written by Andrew Baumann
7 *
8 * This work is licensed under the terms of the GNU GPL, version 2 or later.
9 * See the COPYING file in the top-level directory.
10 */
11
12 #ifndef BCM2835_FB_H
13 #define BCM2835_FB_H
14
15 #include "hw/sysbus.h"
16 #include "ui/console.h"
17
18 #define TYPE_BCM2835_FB "bcm2835-fb"
19 #define BCM2835_FB(obj) OBJECT_CHECK(BCM2835FBState, (obj), TYPE_BCM2835_FB)
20
21 /*
22 * Configuration information about the fb which the guest can program
23 * via the mailbox property interface.
24 */
25 typedef struct {
26 uint32_t xres, yres;
27 uint32_t xres_virtual, yres_virtual;
28 uint32_t xoffset, yoffset;
29 uint32_t bpp;
30 uint32_t base;
31 uint32_t pixo;
32 uint32_t alpha;
33 } BCM2835FBConfig;
34
35 typedef struct {
36 /*< private >*/
37 SysBusDevice busdev;
38 /*< public >*/
39
40 uint32_t vcram_base, vcram_size;
41 MemoryRegion *dma_mr;
42 AddressSpace dma_as;
43 MemoryRegion iomem;
44 MemoryRegionSection fbsection;
45 QemuConsole *con;
46 qemu_irq mbox_irq;
47
48 bool lock, invalidate, pending;
49
50 BCM2835FBConfig config;
51 BCM2835FBConfig initial_config;
52 } BCM2835FBState;
53
54 void bcm2835_fb_reconfigure(BCM2835FBState *s, BCM2835FBConfig *newconfig);
55
56 /**
57 * bcm2835_fb_get_pitch: return number of bytes per line of the framebuffer
58 * @config: configuration info for the framebuffer
59 *
60 * Return the number of bytes per line of the framebuffer, ie the number
61 * that must be added to a pixel address to get the address of the pixel
62 * directly below it on screen.
63 */
64 static inline uint32_t bcm2835_fb_get_pitch(BCM2835FBConfig *config)
65 {
66 uint32_t xres = MAX(config->xres, config->xres_virtual);
67 return xres * (config->bpp >> 3);
68 }
69
70 /**
71 * bcm2835_fb_get_size: return total size of framebuffer in bytes
72 * @config: configuration info for the framebuffer
73 */
74 static inline uint32_t bcm2835_fb_get_size(BCM2835FBConfig *config)
75 {
76 uint32_t yres = MAX(config->yres, config->yres_virtual);
77 return yres * bcm2835_fb_get_pitch(config);
78 }
79
80 /**
81 * bcm2835_fb_validate_config: check provided config
82 *
83 * Validates the configuration information provided by the guest and
84 * adjusts it if necessary.
85 */
86 void bcm2835_fb_validate_config(BCM2835FBConfig *config);
87
88 #endif