^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * fbif.h -- Xen virtual frame buffer device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Permission is hereby granted, free of charge, to any person obtaining a copy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * of this software and associated documentation files (the "Software"), to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * deal in the Software without restriction, including without limitation the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * sell copies of the Software, and to permit persons to whom the Software is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * furnished to do so, subject to the following conditions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * The above copyright notice and this permission notice shall be included in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * all copies or substantial portions of the Software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * DEALINGS IN THE SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * Copyright (C) 2005 Anthony Liguori <aliguori@us.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Copyright (C) 2006 Red Hat, Inc., Markus Armbruster <armbru@redhat.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #ifndef __XEN_PUBLIC_IO_FBIF_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define __XEN_PUBLIC_IO_FBIF_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* Out events (frontend -> backend) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * Out events may be sent only when requested by backend, and receipt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * of an unknown out event is an error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /* Event type 1 currently not used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * Framebuffer update notification event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * Capable frontend sets feature-update in xenstore.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * Backend requests it by setting request-update in xenstore.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define XENFB_TYPE_UPDATE 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct xenfb_update {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) uint8_t type; /* XENFB_TYPE_UPDATE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int32_t x; /* source x */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int32_t y; /* source y */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int32_t width; /* rect width */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int32_t height; /* rect height */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * Framebuffer resize notification event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * Capable backend sets feature-resize in xenstore.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define XENFB_TYPE_RESIZE 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct xenfb_resize {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) uint8_t type; /* XENFB_TYPE_RESIZE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int32_t width; /* width in pixels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) int32_t height; /* height in pixels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) int32_t stride; /* stride in bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int32_t depth; /* depth in bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int32_t offset; /* start offset within framebuffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define XENFB_OUT_EVENT_SIZE 40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) union xenfb_out_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) uint8_t type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct xenfb_update update;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct xenfb_resize resize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) char pad[XENFB_OUT_EVENT_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /* In events (backend -> frontend) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * Frontends should ignore unknown in events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * No in events currently defined.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define XENFB_IN_EVENT_SIZE 40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) union xenfb_in_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) uint8_t type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) char pad[XENFB_IN_EVENT_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /* shared page */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define XENFB_IN_RING_SIZE 1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define XENFB_IN_RING_LEN (XENFB_IN_RING_SIZE / XENFB_IN_EVENT_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define XENFB_IN_RING_OFFS 1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define XENFB_IN_RING(page) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) ((union xenfb_in_event *)((char *)(page) + XENFB_IN_RING_OFFS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define XENFB_IN_RING_REF(page, idx) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) (XENFB_IN_RING((page))[(idx) % XENFB_IN_RING_LEN])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define XENFB_OUT_RING_SIZE 2048
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define XENFB_OUT_RING_LEN (XENFB_OUT_RING_SIZE / XENFB_OUT_EVENT_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define XENFB_OUT_RING_OFFS (XENFB_IN_RING_OFFS + XENFB_IN_RING_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define XENFB_OUT_RING(page) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ((union xenfb_out_event *)((char *)(page) + XENFB_OUT_RING_OFFS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define XENFB_OUT_RING_REF(page, idx) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) (XENFB_OUT_RING((page))[(idx) % XENFB_OUT_RING_LEN])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct xenfb_page {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) uint32_t in_cons, in_prod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) uint32_t out_cons, out_prod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) int32_t width; /* width of the framebuffer (in pixels) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) int32_t height; /* height of the framebuffer (in pixels) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) uint32_t line_length; /* length of a row of pixels (in bytes) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) uint32_t mem_length; /* length of the framebuffer (in bytes) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) uint8_t depth; /* depth of a pixel (in bits) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * Framebuffer page directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * Each directory page holds PAGE_SIZE / sizeof(*pd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * framebuffer pages, and can thus map up to PAGE_SIZE *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * PAGE_SIZE / sizeof(*pd) bytes. With PAGE_SIZE == 4096 and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * sizeof(unsigned long) == 4/8, that's 4 Megs 32 bit and 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * Megs 64 bit. 256 directories give enough room for a 512
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * Meg framebuffer with a max resolution of 12,800x10,240.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * Should be enough for a while with room leftover for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * expansion.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) unsigned long pd[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * Wart: xenkbd needs to know default resolution. Put it here until a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * better solution is found, but don't leak it to the backend.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #ifdef __KERNEL__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define XENFB_WIDTH 800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #define XENFB_HEIGHT 600
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #define XENFB_DEPTH 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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