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-rw-r--r--hw/xenfb.c1021
1 files changed, 0 insertions, 1021 deletions
diff --git a/hw/xenfb.c b/hw/xenfb.c
deleted file mode 100644
index 7c46a2fa1e..0000000000
--- a/hw/xenfb.c
+++ /dev/null
@@ -1,1021 +0,0 @@
-/*
- * xen paravirt framebuffer backend
- *
- * Copyright IBM, Corp. 2005-2006
- * Copyright Red Hat, Inc. 2006-2008
- *
- * Authors:
- * Anthony Liguori <aliguori@us.ibm.com>,
- * Markus Armbruster <armbru@redhat.com>,
- * Daniel P. Berrange <berrange@redhat.com>,
- * Pat Campbell <plc@novell.com>,
- * Gerd Hoffmann <kraxel@redhat.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; under version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdarg.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-
-#include "hw/hw.h"
-#include "ui/console.h"
-#include "char/char.h"
-#include "hw/xen_backend.h"
-
-#include <xen/event_channel.h>
-#include <xen/io/fbif.h>
-#include <xen/io/kbdif.h>
-#include <xen/io/protocols.h>
-
-#ifndef BTN_LEFT
-#define BTN_LEFT 0x110 /* from <linux/input.h> */
-#endif
-
-/* -------------------------------------------------------------------- */
-
-struct common {
- struct XenDevice xendev; /* must be first */
- void *page;
- QemuConsole *con;
-};
-
-struct XenInput {
- struct common c;
- int abs_pointer_wanted; /* Whether guest supports absolute pointer */
- int button_state; /* Last seen pointer button state */
- int extended;
- QEMUPutMouseEntry *qmouse;
-};
-
-#define UP_QUEUE 8
-
-struct XenFB {
- struct common c;
- size_t fb_len;
- int row_stride;
- int depth;
- int width;
- int height;
- int offset;
- void *pixels;
- int fbpages;
- int feature_update;
- int refresh_period;
- int bug_trigger;
- int have_console;
- int do_resize;
-
- struct {
- int x,y,w,h;
- } up_rects[UP_QUEUE];
- int up_count;
- int up_fullscreen;
-};
-
-/* -------------------------------------------------------------------- */
-
-static int common_bind(struct common *c)
-{
- int mfn;
-
- if (xenstore_read_fe_int(&c->xendev, "page-ref", &mfn) == -1)
- return -1;
- if (xenstore_read_fe_int(&c->xendev, "event-channel", &c->xendev.remote_port) == -1)
- return -1;
-
- c->page = xc_map_foreign_range(xen_xc, c->xendev.dom,
- XC_PAGE_SIZE,
- PROT_READ | PROT_WRITE, mfn);
- if (c->page == NULL)
- return -1;
-
- xen_be_bind_evtchn(&c->xendev);
- xen_be_printf(&c->xendev, 1, "ring mfn %d, remote-port %d, local-port %d\n",
- mfn, c->xendev.remote_port, c->xendev.local_port);
-
- return 0;
-}
-
-static void common_unbind(struct common *c)
-{
- xen_be_unbind_evtchn(&c->xendev);
- if (c->page) {
- munmap(c->page, XC_PAGE_SIZE);
- c->page = NULL;
- }
-}
-
-/* -------------------------------------------------------------------- */
-
-#if 0
-/*
- * These two tables are not needed any more, but left in here
- * intentionally as documentation, to show how scancode2linux[]
- * was generated.
- *
- * Tables to map from scancode to Linux input layer keycode.
- * Scancodes are hardware-specific. These maps assumes a
- * standard AT or PS/2 keyboard which is what QEMU feeds us.
- */
-const unsigned char atkbd_set2_keycode[512] = {
-
- 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
- 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
- 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
- 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
- 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
- 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
- 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
- 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
-
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
- 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
- 159, 0,115, 0,164, 0, 0,116,158, 0,150,166, 0, 0, 0,142,
- 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
- 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
- 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
-
-};
-
-const unsigned char atkbd_unxlate_table[128] = {
-
- 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
- 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
- 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
- 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
- 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
- 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
- 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
- 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
-
-};
-#endif
-
-/*
- * for (i = 0; i < 128; i++) {
- * scancode2linux[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]];
- * scancode2linux[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80];
- * }
- */
-static const unsigned char scancode2linux[512] = {
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
- 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
- 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
- 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
- 80, 81, 82, 83, 99, 0, 86, 87, 88,117, 0, 0, 95,183,184,185,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 93, 0, 0, 89, 0, 0, 85, 91, 90, 92, 0, 94, 0,124,121, 0,
-
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 165, 0, 0, 0, 0, 0, 0, 0, 0,163, 0, 0, 96, 97, 0, 0,
- 113,140,164, 0,166, 0, 0, 0, 0, 0,255, 0, 0, 0,114, 0,
- 115, 0,150, 0, 0, 98,255, 99,100, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0,119,119,102,103,104, 0,105,112,106,118,107,
- 108,109,110,111, 0, 0, 0, 0, 0, 0, 0,125,126,127,116,142,
- 0, 0, 0,143, 0,217,156,173,128,159,158,157,155,226, 0,112,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-};
-
-/* Send an event to the keyboard frontend driver */
-static int xenfb_kbd_event(struct XenInput *xenfb,
- union xenkbd_in_event *event)
-{
- struct xenkbd_page *page = xenfb->c.page;
- uint32_t prod;
-
- if (xenfb->c.xendev.be_state != XenbusStateConnected)
- return 0;
- if (!page)
- return 0;
-
- prod = page->in_prod;
- if (prod - page->in_cons == XENKBD_IN_RING_LEN) {
- errno = EAGAIN;
- return -1;
- }
-
- xen_mb(); /* ensure ring space available */
- XENKBD_IN_RING_REF(page, prod) = *event;
- xen_wmb(); /* ensure ring contents visible */
- page->in_prod = prod + 1;
- return xen_be_send_notify(&xenfb->c.xendev);
-}
-
-/* Send a keyboard (or mouse button) event */
-static int xenfb_send_key(struct XenInput *xenfb, bool down, int keycode)
-{
- union xenkbd_in_event event;
-
- memset(&event, 0, XENKBD_IN_EVENT_SIZE);
- event.type = XENKBD_TYPE_KEY;
- event.key.pressed = down ? 1 : 0;
- event.key.keycode = keycode;
-
- return xenfb_kbd_event(xenfb, &event);
-}
-
-/* Send a relative mouse movement event */
-static int xenfb_send_motion(struct XenInput *xenfb,
- int rel_x, int rel_y, int rel_z)
-{
- union xenkbd_in_event event;
-
- memset(&event, 0, XENKBD_IN_EVENT_SIZE);
- event.type = XENKBD_TYPE_MOTION;
- event.motion.rel_x = rel_x;
- event.motion.rel_y = rel_y;
-#if __XEN_LATEST_INTERFACE_VERSION__ >= 0x00030207
- event.motion.rel_z = rel_z;
-#endif
-
- return xenfb_kbd_event(xenfb, &event);
-}
-
-/* Send an absolute mouse movement event */
-static int xenfb_send_position(struct XenInput *xenfb,
- int abs_x, int abs_y, int z)
-{
- union xenkbd_in_event event;
-
- memset(&event, 0, XENKBD_IN_EVENT_SIZE);
- event.type = XENKBD_TYPE_POS;
- event.pos.abs_x = abs_x;
- event.pos.abs_y = abs_y;
-#if __XEN_LATEST_INTERFACE_VERSION__ == 0x00030207
- event.pos.abs_z = z;
-#endif
-#if __XEN_LATEST_INTERFACE_VERSION__ >= 0x00030208
- event.pos.rel_z = z;
-#endif
-
- return xenfb_kbd_event(xenfb, &event);
-}
-
-/*
- * Send a key event from the client to the guest OS
- * QEMU gives us a raw scancode from an AT / PS/2 style keyboard.
- * We have to turn this into a Linux Input layer keycode.
- *
- * Extra complexity from the fact that with extended scancodes
- * (like those produced by arrow keys) this method gets called
- * twice, but we only want to send a single event. So we have to
- * track the '0xe0' scancode state & collapse the extended keys
- * as needed.
- *
- * Wish we could just send scancodes straight to the guest which
- * already has code for dealing with this...
- */
-static void xenfb_key_event(void *opaque, int scancode)
-{
- struct XenInput *xenfb = opaque;
- int down = 1;
-
- if (scancode == 0xe0) {
- xenfb->extended = 1;
- return;
- } else if (scancode & 0x80) {
- scancode &= 0x7f;
- down = 0;
- }
- if (xenfb->extended) {
- scancode |= 0x80;
- xenfb->extended = 0;
- }
- xenfb_send_key(xenfb, down, scancode2linux[scancode]);
-}
-
-/*
- * Send a mouse event from the client to the guest OS
- *
- * The QEMU mouse can be in either relative, or absolute mode.
- * Movement is sent separately from button state, which has to
- * be encoded as virtual key events. We also don't actually get
- * given any button up/down events, so have to track changes in
- * the button state.
- */
-static void xenfb_mouse_event(void *opaque,
- int dx, int dy, int dz, int button_state)
-{
- struct XenInput *xenfb = opaque;
- DisplaySurface *surface = qemu_console_surface(xenfb->c.con);
- int dw = surface_width(surface);
- int dh = surface_height(surface);
- int i;
-
- if (xenfb->abs_pointer_wanted)
- xenfb_send_position(xenfb,
- dx * (dw - 1) / 0x7fff,
- dy * (dh - 1) / 0x7fff,
- dz);
- else
- xenfb_send_motion(xenfb, dx, dy, dz);
-
- for (i = 0 ; i < 8 ; i++) {
- int lastDown = xenfb->button_state & (1 << i);
- int down = button_state & (1 << i);
- if (down == lastDown)
- continue;
-
- if (xenfb_send_key(xenfb, down, BTN_LEFT+i) < 0)
- return;
- }
- xenfb->button_state = button_state;
-}
-
-static int input_init(struct XenDevice *xendev)
-{
- xenstore_write_be_int(xendev, "feature-abs-pointer", 1);
- return 0;
-}
-
-static int input_initialise(struct XenDevice *xendev)
-{
- struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
- int rc;
-
- if (!in->c.con) {
- xen_be_printf(xendev, 1, "ds not set (yet)\n");
- return -1;
- }
-
- rc = common_bind(&in->c);
- if (rc != 0)
- return rc;
-
- qemu_add_kbd_event_handler(xenfb_key_event, in);
- return 0;
-}
-
-static void input_connected(struct XenDevice *xendev)
-{
- struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
-
- if (xenstore_read_fe_int(xendev, "request-abs-pointer",
- &in->abs_pointer_wanted) == -1) {
- in->abs_pointer_wanted = 0;
- }
-
- if (in->qmouse) {
- qemu_remove_mouse_event_handler(in->qmouse);
- }
- in->qmouse = qemu_add_mouse_event_handler(xenfb_mouse_event, in,
- in->abs_pointer_wanted,
- "Xen PVFB Mouse");
-}
-
-static void input_disconnect(struct XenDevice *xendev)
-{
- struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
-
- if (in->qmouse) {
- qemu_remove_mouse_event_handler(in->qmouse);
- in->qmouse = NULL;
- }
- qemu_add_kbd_event_handler(NULL, NULL);
- common_unbind(&in->c);
-}
-
-static void input_event(struct XenDevice *xendev)
-{
- struct XenInput *xenfb = container_of(xendev, struct XenInput, c.xendev);
- struct xenkbd_page *page = xenfb->c.page;
-
- /* We don't understand any keyboard events, so just ignore them. */
- if (page->out_prod == page->out_cons)
- return;
- page->out_cons = page->out_prod;
- xen_be_send_notify(&xenfb->c.xendev);
-}
-
-/* -------------------------------------------------------------------- */
-
-static void xenfb_copy_mfns(int mode, int count, unsigned long *dst, void *src)
-{
- uint32_t *src32 = src;
- uint64_t *src64 = src;
- int i;
-
- for (i = 0; i < count; i++)
- dst[i] = (mode == 32) ? src32[i] : src64[i];
-}
-
-static int xenfb_map_fb(struct XenFB *xenfb)
-{
- struct xenfb_page *page = xenfb->c.page;
- char *protocol = xenfb->c.xendev.protocol;
- int n_fbdirs;
- unsigned long *pgmfns = NULL;
- unsigned long *fbmfns = NULL;
- void *map, *pd;
- int mode, ret = -1;
-
- /* default to native */
- pd = page->pd;
- 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;
-#if defined(__i386__)
- ptr32 = (void*)page->pd;
- ptr64 = ((void*)page->pd) + 4;
-#elif defined(__x86_64__)
- 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 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;
-#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;
-#endif
- }
-
- if (xenfb->pixels) {
- munmap(xenfb->pixels, xenfb->fbpages * XC_PAGE_SIZE);
- xenfb->pixels = NULL;
- }
-
- xenfb->fbpages = (xenfb->fb_len + (XC_PAGE_SIZE - 1)) / XC_PAGE_SIZE;
- n_fbdirs = xenfb->fbpages * mode / 8;
- n_fbdirs = (n_fbdirs + (XC_PAGE_SIZE - 1)) / XC_PAGE_SIZE;
-
- pgmfns = g_malloc0(sizeof(unsigned long) * n_fbdirs);
- fbmfns = g_malloc0(sizeof(unsigned long) * xenfb->fbpages);
-
- xenfb_copy_mfns(mode, n_fbdirs, pgmfns, pd);
- map = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom,
- PROT_READ, pgmfns, n_fbdirs);
- if (map == NULL)
- goto out;
- xenfb_copy_mfns(mode, xenfb->fbpages, fbmfns, map);
- munmap(map, n_fbdirs * XC_PAGE_SIZE);
-
- xenfb->pixels = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom,
- PROT_READ | PROT_WRITE, fbmfns, xenfb->fbpages);
- if (xenfb->pixels == NULL)
- goto out;
-
- ret = 0; /* all is fine */
-
-out:
- g_free(pgmfns);
- g_free(fbmfns);
- return ret;
-}
-
-static int xenfb_configure_fb(struct XenFB *xenfb, size_t fb_len_lim,
- int width, int height, int depth,
- size_t fb_len, int offset, int row_stride)
-{
- size_t mfn_sz = sizeof(*((struct xenfb_page *)0)->pd);
- size_t pd_len = sizeof(((struct xenfb_page *)0)->pd) / mfn_sz;
- size_t fb_pages = pd_len * XC_PAGE_SIZE / mfn_sz;
- size_t fb_len_max = fb_pages * XC_PAGE_SIZE;
- int max_width, max_height;
-
- if (fb_len_lim > fb_len_max) {
- xen_be_printf(&xenfb->c.xendev, 0, "fb size limit %zu exceeds %zu, corrected\n",
- fb_len_lim, fb_len_max);
- fb_len_lim = fb_len_max;
- }
- if (fb_len_lim && fb_len > fb_len_lim) {
- xen_be_printf(&xenfb->c.xendev, 0, "frontend fb size %zu limited to %zu\n",
- fb_len, fb_len_lim);
- fb_len = fb_len_lim;
- }
- if (depth != 8 && depth != 16 && depth != 24 && depth != 32) {
- xen_be_printf(&xenfb->c.xendev, 0, "can't handle frontend fb depth %d\n",
- depth);
- return -1;
- }
- if (row_stride <= 0 || row_stride > fb_len) {
- xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend stride %d\n", row_stride);
- return -1;
- }
- max_width = row_stride / (depth / 8);
- if (width < 0 || width > max_width) {
- xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend width %d limited to %d\n",
- width, max_width);
- width = max_width;
- }
- if (offset < 0 || offset >= fb_len) {
- xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend offset %d (max %zu)\n",
- offset, fb_len - 1);
- return -1;
- }
- max_height = (fb_len - offset) / row_stride;
- if (height < 0 || height > max_height) {
- xen_be_printf(&xenfb->c.xendev, 0, "invalid frontend height %d limited to %d\n",
- height, max_height);
- height = max_height;
- }
- xenfb->fb_len = fb_len;
- xenfb->row_stride = row_stride;
- xenfb->depth = depth;
- xenfb->width = width;
- xenfb->height = height;
- xenfb->offset = offset;
- xenfb->up_fullscreen = 1;
- xenfb->do_resize = 1;
- xen_be_printf(&xenfb->c.xendev, 1, "framebuffer %dx%dx%d offset %d stride %d\n",
- width, height, depth, offset, row_stride);
- return 0;
-}
-
-/* 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); \
- } \
- }
-
-
-/*
- * This copies data from the guest framebuffer region, into QEMU's
- * displaysurface. qemu uses 16 or 32 bpp. In case the pv framebuffer
- * uses something else we must convert and copy, otherwise we can
- * supply the buffer directly and no thing here.
- */
-static void xenfb_guest_copy(struct XenFB *xenfb, int x, int y, int w, int h)
-{
- DisplaySurface *surface = qemu_console_surface(xenfb->c.con);
- int line, oops = 0;
- int bpp = surface_bits_per_pixel(surface);
- int linesize = surface_stride(surface);
- uint8_t *data = surface_data(surface);
-
- if (!is_buffer_shared(surface)) {
- switch (xenfb->depth) {
- case 8:
- if (bpp == 16) {
- BLT(uint8_t, uint16_t, 3, 3, 2, 5, 6, 5);
- } else if (bpp == 32) {
- BLT(uint8_t, uint32_t, 3, 3, 2, 8, 8, 8);
- } else {
- oops = 1;
- }
- break;
- case 24:
- if (bpp == 16) {
- BLT(uint32_t, uint16_t, 8, 8, 8, 5, 6, 5);
- } else if (bpp == 32) {
- BLT(uint32_t, uint32_t, 8, 8, 8, 8, 8, 8);
- } else {
- oops = 1;
- }
- break;
- default:
- oops = 1;
- }
- }
- if (oops) /* should not happen */
- xen_be_printf(&xenfb->c.xendev, 0, "%s: oops: convert %d -> %d bpp?\n",
- __FUNCTION__, xenfb->depth, bpp);
-
- dpy_gfx_update(xenfb->c.con, x, y, w, h);
-}
-
-#if 0 /* def XENFB_TYPE_REFRESH_PERIOD */
-static int xenfb_queue_full(struct XenFB *xenfb)
-{
- struct xenfb_page *page = xenfb->c.page;
- uint32_t cons, prod;
-
- if (!page)
- return 1;
-
- prod = page->in_prod;
- cons = page->in_cons;
- return prod - cons == XENFB_IN_RING_LEN;
-}
-
-static void xenfb_send_event(struct XenFB *xenfb, union xenfb_in_event *event)
-{
- uint32_t prod;
- struct xenfb_page *page = xenfb->c.page;
-
- prod = page->in_prod;
- /* caller ensures !xenfb_queue_full() */
- xen_mb(); /* ensure ring space available */
- XENFB_IN_RING_REF(page, prod) = *event;
- xen_wmb(); /* ensure ring contents visible */
- page->in_prod = prod + 1;
-
- xen_be_send_notify(&xenfb->c.xendev);
-}
-
-static void xenfb_send_refresh_period(struct XenFB *xenfb, int period)
-{
- union xenfb_in_event event;
-
- memset(&event, 0, sizeof(event));
- event.type = XENFB_TYPE_REFRESH_PERIOD;
- event.refresh_period.period = period;
- xenfb_send_event(xenfb, &event);
-}
-#endif
-
-/*
- * Periodic update of display.
- * Also transmit the refresh interval to the frontend.
- *
- * Never ever do any qemu display operations
- * (resize, screen update) outside this function.
- * Our screen might be inactive. When asked for
- * an update we know it is active.
- */
-static void xenfb_update(void *opaque)
-{
- struct XenFB *xenfb = opaque;
- DisplaySurface *surface;
- int i;
-
- if (xenfb->c.xendev.be_state != XenbusStateConnected)
- return;
-
- if (xenfb->feature_update) {
-#if 0 /* XENFB_TYPE_REFRESH_PERIOD */
- struct DisplayChangeListener *l;
- int period = 99999999;
- int idle = 1;
-
- if (xenfb_queue_full(xenfb))
- return;
-
- QLIST_FOREACH(l, &xenfb->c.ds->listeners, next) {
- if (l->idle)
- continue;
- idle = 0;
- if (!l->gui_timer_interval) {
- if (period > GUI_REFRESH_INTERVAL)
- period = GUI_REFRESH_INTERVAL;
- } else {
- if (period > l->gui_timer_interval)
- period = l->gui_timer_interval;
- }
- }
- if (idle)
- period = XENFB_NO_REFRESH;
-
- if (xenfb->refresh_period != period) {
- xenfb_send_refresh_period(xenfb, period);
- xenfb->refresh_period = period;
- xen_be_printf(&xenfb->c.xendev, 1, "refresh period: %d\n", period);
- }
-#else
- ; /* nothing */
-#endif
- } else {
- /* we don't get update notifications, thus use the
- * sledge hammer approach ... */
- xenfb->up_fullscreen = 1;
- }
-
- /* resize if needed */
- if (xenfb->do_resize) {
- xenfb->do_resize = 0;
- switch (xenfb->depth) {
- case 16:
- case 32:
- /* console.c supported depth -> buffer can be used directly */
- surface = qemu_create_displaysurface_from
- (xenfb->width, xenfb->height, xenfb->depth,
- xenfb->row_stride, xenfb->pixels + xenfb->offset,
- false);
- break;
- default:
- /* we must convert stuff */
- surface = qemu_create_displaysurface(xenfb->width, xenfb->height);
- break;
- }
- dpy_gfx_replace_surface(xenfb->c.con, surface);
- xen_be_printf(&xenfb->c.xendev, 1, "update: resizing: %dx%d @ %d bpp%s\n",
- xenfb->width, xenfb->height, xenfb->depth,
- is_buffer_shared(surface) ? " (shared)" : "");
- xenfb->up_fullscreen = 1;
- }
-
- /* run queued updates */
- if (xenfb->up_fullscreen) {
- xen_be_printf(&xenfb->c.xendev, 3, "update: fullscreen\n");
- xenfb_guest_copy(xenfb, 0, 0, xenfb->width, xenfb->height);
- } else if (xenfb->up_count) {
- xen_be_printf(&xenfb->c.xendev, 3, "update: %d rects\n", xenfb->up_count);
- for (i = 0; i < xenfb->up_count; i++)
- xenfb_guest_copy(xenfb,
- xenfb->up_rects[i].x,
- xenfb->up_rects[i].y,
- xenfb->up_rects[i].w,
- xenfb->up_rects[i].h);
- } else {
- xen_be_printf(&xenfb->c.xendev, 3, "update: nothing\n");
- }
- xenfb->up_count = 0;
- xenfb->up_fullscreen = 0;
-}
-
-/* QEMU display state changed, so refresh the framebuffer copy */
-static void xenfb_invalidate(void *opaque)
-{
- struct XenFB *xenfb = opaque;
- xenfb->up_fullscreen = 1;
-}
-
-static void xenfb_handle_events(struct XenFB *xenfb)
-{
- uint32_t prod, cons;
- struct xenfb_page *page = xenfb->c.page;
-
- prod = page->out_prod;
- if (prod == page->out_cons)
- return;
- xen_rmb(); /* ensure we see ring contents up to prod */
- for (cons = page->out_cons; cons != prod; cons++) {
- union xenfb_out_event *event = &XENFB_OUT_RING_REF(page, cons);
- int x, y, w, h;
-
- switch (event->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_be_printf(&xenfb->c.xendev, 1, "bogus update ignored\n");
- break;
- }
- if (x != event->update.x ||
- y != event->update.y ||
- w != event->update.width ||
- h != event->update.height) {
- xen_be_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;
-#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;
-#endif
- }
- }
- xen_mb(); /* ensure we're done with ring contents */
- page->out_cons = cons;
-}
-
-static int fb_init(struct XenDevice *xendev)
-{
- struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
-
- fb->refresh_period = -1;
-
-#ifdef XENFB_TYPE_RESIZE
- xenstore_write_be_int(xendev, "feature-resize", 1);
-#endif
- return 0;
-}
-
-static int fb_initialise(struct XenDevice *xendev)
-{
- struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
- struct xenfb_page *fb_page;
- int videoram;
- int rc;
-
- if (xenstore_read_fe_int(xendev, "videoram", &videoram) == -1)
- videoram = 0;
-
- rc = common_bind(&fb->c);
- if (rc != 0)
- return rc;
-
- fb_page = fb->c.page;
- rc = xenfb_configure_fb(fb, videoram * 1024 * 1024U,
- fb_page->width, fb_page->height, fb_page->depth,
- fb_page->mem_length, 0, fb_page->line_length);
- if (rc != 0)
- return rc;
-
- rc = xenfb_map_fb(fb);
- if (rc != 0)
- return rc;
-
-#if 0 /* handled in xen_init_display() for now */
- if (!fb->have_console) {
- fb->c.ds = graphic_console_init(xenfb_update,
- xenfb_invalidate,
- NULL,
- NULL,
- fb);
- fb->have_console = 1;
- }
-#endif
-
- if (xenstore_read_fe_int(xendev, "feature-update", &fb->feature_update) == -1)
- fb->feature_update = 0;
- if (fb->feature_update)
- xenstore_write_be_int(xendev, "request-update", 1);
-
- xen_be_printf(xendev, 1, "feature-update=%d, videoram=%d\n",
- fb->feature_update, videoram);
- return 0;
-}
-
-static void fb_disconnect(struct XenDevice *xendev)
-{
- struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
-
- /*
- * FIXME: qemu can't un-init gfx display (yet?).
- * Replacing the framebuffer with anonymous shared memory
- * instead. This releases the guest pages and keeps qemu happy.
- */
- fb->pixels = mmap(fb->pixels, fb->fbpages * XC_PAGE_SIZE,
- PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON,
- -1, 0);
- common_unbind(&fb->c);
- fb->feature_update = 0;
- fb->bug_trigger = 0;
-}
-
-static void fb_frontend_changed(struct XenDevice *xendev, const char *node)
-{
- struct XenFB *fb = container_of(xendev, struct XenFB, c.xendev);
-
- /*
- * Set state to Connected *again* once the frontend switched
- * to connected. We must trigger the watch a second time to
- * workaround a frontend bug.
- */
- if (fb->bug_trigger == 0 && strcmp(node, "state") == 0 &&
- xendev->fe_state == XenbusStateConnected &&
- xendev->be_state == XenbusStateConnected) {
- xen_be_printf(xendev, 2, "re-trigger connected (frontend bug)\n");
- xen_be_set_state(xendev, XenbusStateConnected);
- fb->bug_trigger = 1; /* only once */
- }
-}
-
-static void fb_event(struct XenDevice *xendev)
-{
- struct XenFB *xenfb = container_of(xendev, struct XenFB, c.xendev);
-
- xenfb_handle_events(xenfb);
- xen_be_send_notify(&xenfb->c.xendev);
-}
-
-/* -------------------------------------------------------------------- */
-
-struct XenDevOps xen_kbdmouse_ops = {
- .size = sizeof(struct XenInput),
- .init = input_init,
- .initialise = input_initialise,
- .connected = input_connected,
- .disconnect = input_disconnect,
- .event = input_event,
-};
-
-struct XenDevOps xen_framebuffer_ops = {
- .size = sizeof(struct XenFB),
- .init = fb_init,
- .initialise = fb_initialise,
- .disconnect = fb_disconnect,
- .event = fb_event,
- .frontend_changed = fb_frontend_changed,
-};
-
-/*
- * FIXME/TODO: Kill this.
- * Temporary needed while DisplayState reorganization is in flight.
- */
-void xen_init_display(int domid)
-{
- struct XenDevice *xfb, *xin;
- struct XenFB *fb;
- struct XenInput *in;
- int i = 0;
-
-wait_more:
- i++;
- main_loop_wait(true);
- xfb = xen_be_find_xendev("vfb", domid, 0);
- xin = xen_be_find_xendev("vkbd", domid, 0);
- if (!xfb || !xin) {
- if (i < 256) {
- usleep(10000);
- goto wait_more;
- }
- xen_be_printf(NULL, 1, "displaystate setup failed\n");
- return;
- }
-
- /* vfb */
- fb = container_of(xfb, struct XenFB, c.xendev);
- fb->c.con = graphic_console_init(xenfb_update,
- xenfb_invalidate,
- NULL,
- NULL,
- fb);
- fb->have_console = 1;
-
- /* vkbd */
- in = container_of(xin, struct XenInput, c.xendev);
- in->c.con = fb->c.con;
-
- /* retry ->init() */
- xen_be_check_state(xin);
- xen_be_check_state(xfb);
-}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-25 00:42:11 +0000