diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2013-03-01 13:59:19 +0100 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-04-08 18:13:12 +0200 |
commit | 49ab747f668f421138d5b40d83fa279c4c5e278d (patch) | |
tree | 943225a04eac885aed038731adf058f2250a2f40 /hw/xenfb.c | |
parent | ce3b494cb504f96992f2d37ebc8f56deed202b06 (diff) |
hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving
them to subdirectories of hw/.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/xenfb.c')
-rw-r--r-- | hw/xenfb.c | 1021 |
1 files changed, 0 insertions, 1021 deletions
diff --git a/hw/xenfb.c b/hw/xenfb.c deleted file mode 100644 index 8e4266142d..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/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); -} |