Index: ioemu/hw/vga.c =================================================================== --- ioemu.orig/hw/vga.c 2007-05-03 19:15:06.000000000 +0100 +++ ioemu/hw/vga.c 2007-05-03 19:15:57.000000000 +0100 @@ -1373,6 +1373,105 @@ } } +static inline int cmp_vram(VGAState *s, int offset, int n) +{ + long *vp, *sp; + + if (s->vram_shadow == NULL) + return 1; + vp = (long *)(s->vram_ptr + offset); + sp = (long *)(s->vram_shadow + offset); + while ((n -= sizeof(*vp)) >= 0) { + if (*vp++ != *sp++) { + memcpy(sp - 1, vp - 1, n + sizeof(*vp)); + return 1; + } + } + return 0; +} + +#ifdef USE_SSE2 + +#include +#include +#include + +int sse2_ok = 1; + +static inline unsigned int cpuid_edx(unsigned int op) +{ + unsigned int eax, edx; + +#ifdef __x86_64__ +#define __bx "rbx" +#else +#define __bx "ebx" +#endif + __asm__("push %%"__bx"; cpuid; pop %%"__bx + : "=a" (eax), "=d" (edx) + : "0" (op) + : "cx"); +#undef __bx + + return edx; +} + +jmp_buf sse_jbuf; + +void intr(int sig) +{ + sse2_ok = 0; + longjmp(sse_jbuf, 1); +} + +void check_sse2(void) +{ + /* Check 1: What does CPUID say? */ + if ((cpuid_edx(1) & 0x4000000) == 0) { + sse2_ok = 0; + return; + } + + /* Check 2: Can we use SSE2 in anger? */ + signal(SIGILL, intr); + if (setjmp(sse_jbuf) == 0) + __asm__("xorps %xmm0,%xmm0\n"); +} + +int vram_dirty(VGAState *s, int offset, int n) +{ + __m128i *sp, *vp; + + if (s->vram_shadow == NULL) + return 1; + if (sse2_ok == 0) + return cmp_vram(s, offset, n); + vp = (__m128i *)(s->vram_ptr + offset); + sp = (__m128i *)(s->vram_shadow + offset); + while ((n -= sizeof(*vp)) >= 0) { + if (_mm_movemask_epi8(_mm_cmpeq_epi8(*sp, *vp)) != 0xffff) { + while (n >= 0) { + _mm_store_si128(sp++, _mm_load_si128(vp++)); + n -= sizeof(*vp); + } + return 1; + } + sp++; + vp++; + } + return 0; +} +#else /* !USE_SSE2 */ +int vram_dirty(VGAState *s, int offset, int n) +{ + return cmp_vram(s, offset, n); +} + +void check_sse2(void) +{ +} +#endif /* !USE_SSE2 */ + /* * graphic modes */ @@ -1468,6 +1567,11 @@ printf("w=%d h=%d v=%d line_offset=%d cr[0x09]=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=0x%02x\n", width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]); #endif + + for (y = 0; y < s->vram_size; y += TARGET_PAGE_SIZE) + if (vram_dirty(s, y, TARGET_PAGE_SIZE)) + cpu_physical_memory_set_dirty(s->vram_offset + y); + addr1 = (s->start_addr * 4); bwidth = width * 4; y_start = -1; @@ -1918,7 +2022,18 @@ vga_reset(s); - s->vram_ptr = qemu_malloc(vga_ram_size); + check_sse2(); + s->vram_shadow = qemu_malloc(vga_ram_size+TARGET_PAGE_SIZE+1); + if (s->vram_shadow == NULL) + fprintf(stderr, "Cannot allocate %d bytes for VRAM shadow, " + "mouse will be slow\n", vga_ram_size); + s->vram_shadow = (uint8_t *)((long)(s->vram_shadow + TARGET_PAGE_SIZE - 1) + & ~(TARGET_PAGE_SIZE - 1)); + + /* Video RAM must be 128-bit aligned for SSE optimizations later */ + s->vram_alloc = qemu_malloc(vga_ram_size + 15); + s->vram_ptr = (uint8_t *)((long)(s->vram_alloc + 15) & ~15L); + s->vram_offset = vga_ram_offset; s->vram_size = vga_ram_size; s->ds = ds; @@ -2058,7 +2173,7 @@ } if (!vga_ram_base) { - vga_ram_base = qemu_malloc(vga_ram_size); + vga_ram_base = qemu_malloc(vga_ram_size + TARGET_PAGE_SIZE + 1); if (!vga_ram_base) { fprintf(stderr, "reallocate error\n"); return NULL; @@ -2066,8 +2181,10 @@ } /* XXX lock needed? */ + old_pointer = s->vram_alloc; + s->vram_alloc = vga_ram_base; + vga_ram_base = (uint8_t *)((long)(vga_ram_base + 15) & ~15L); memcpy(vga_ram_base, s->vram_ptr, vga_ram_size); - old_pointer = s->vram_ptr; s->vram_ptr = vga_ram_base; return old_pointer; Index: ioemu/hw/vga_int.h =================================================================== --- ioemu.orig/hw/vga_int.h 2007-05-03 19:15:06.000000000 +0100 +++ ioemu/hw/vga_int.h 2007-05-03 19:15:57.000000000 +0100 @@ -80,7 +80,9 @@ #define VGA_MAX_HEIGHT 2048 #define VGA_STATE_COMMON \ + uint8_t *vram_alloc; \ uint8_t *vram_ptr; \ + uint8_t *vram_shadow; \ unsigned long vram_offset; \ unsigned int vram_size; \ unsigned long bios_offset; \ ef='#n27'>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 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 
/*
             LUFA Library
     Copyright (C) Dean Camera, 2017.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this
  software and its documentation for any purpose is hereby granted
  without fee, provided that the above copyright notice appear in
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaims all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

/** \file
 *
 *  Main source file for the DualVirtualSerial demo. This file contains the main tasks of the demo and
 *  is responsible for the initial application hardware configuration.
 */

#include "DualVirtualSerial.h"

/** Contains the current baud rate and other settings of the first virtual serial port. While this demo does not use
 *  the physical USART and thus does not use these settings, they must still be retained and returned to the host
 *  upon request or the host will assume the device is non-functional.
 *
 *  These values are set by the host via a class-specific request, however they are not required to be used accurately.
 *  It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical
 *  serial link characteristics and instead sends and receives data in endpoint streams.
 */
static CDC_LineEncoding_t LineEncoding1 = { .BaudRateBPS = 0,
                                            .CharFormat  = CDC_LINEENCODING_OneStopBit,
                                            .ParityType  = CDC_PARITY_None,
                                            .DataBits    = 8                            };

/** Contains the current baud rate and other settings of the second virtual serial port. While this demo does not use
 *  the physical USART and thus does not use these settings, they must still be retained and returned to the host
 *  upon request or the host will assume the device is non-functional.
 *
 *  These values are set by the host via a class-specific request, however they are not required to be used accurately.
 *  It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical
 *  serial link characteristics and instead sends and receives data in endpoint streams.
 */
static CDC_LineEncoding_t LineEncoding2 = { .BaudRateBPS = 0,
                                            .CharFormat  = CDC_LINEENCODING_OneStopBit,
                                            .ParityType  = CDC_PARITY_None,
                                            .DataBits    = 8                            };


/** Main program entry point. This routine configures the hardware required by the application, then
 *  enters a loop to run the application tasks in sequence.
 */
int main(void)
{
	SetupHardware();

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	GlobalInterruptEnable();

	for (;;)
	{
		CDC1_Task();
		CDC2_Task();
		USB_USBTask();
	}
}

/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
#if (ARCH == ARCH_AVR8)
	/* Disable watchdog if enabled by bootloader/fuses */
	MCUSR &= ~(1 << WDRF);
	wdt_disable();

	/* Disable clock division */
	clock_prescale_set(clock_div_1);
#elif (ARCH == ARCH_XMEGA)
	/* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
	XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
	XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);

	/* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
	XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
	XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);

	PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
#endif

	/* Hardware Initialization */
	Joystick_Init();
	LEDs_Init();
	USB_Init();
}

/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
 *  starts the library USB task to begin the enumeration and USB management process.
 */
void EVENT_USB_Device_Connect(void)
{
	/* Indicate USB enumerating */
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}

/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
 *  the status LEDs and stops the USB management and CDC management tasks.
 */
void EVENT_USB_Device_Disconnect(void)
{
	/* Indicate USB not ready */
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}

/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration
 *  of the USB device after enumeration - the device endpoints are configured and the CDC management tasks are started.
 */
void EVENT_USB_Device_ConfigurationChanged(void)
{
	bool ConfigSuccess = true;

	/* Setup first CDC Interface's Endpoints */
	ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC1_TX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
	ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC1_RX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
	ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC1_NOTIFICATION_EPADDR, EP_TYPE_INTERRUPT, CDC_NOTIFICATION_EPSIZE, 1);

	/* Setup second CDC Interface's Endpoints */
	ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC2_TX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
	ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC2_RX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1);
	ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC2_NOTIFICATION_EPADDR, EP_TYPE_INTERRUPT, CDC_NOTIFICATION_EPSIZE, 1);

	/* Reset line encoding baud rates so that the host knows to send new values */
	LineEncoding1.BaudRateBPS = 0;
	LineEncoding2.BaudRateBPS = 0;

	/* Indicate endpoint configuration success or failure */
	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
}

/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
 *  the device from the USB host before passing along unhandled control requests to the library for processing
 *  internally.
 */
void EVENT_USB_Device_ControlRequest(void)
{
	/* Determine which interface's Line Coding data is being set from the wIndex parameter */
	void* LineEncodingData = (USB_ControlRequest.wIndex == 0) ? &LineEncoding1 : &LineEncoding2;

	/* Process CDC specific control requests */
	switch (USB_ControlRequest.bRequest)
	{
		case CDC_REQ_GetLineEncoding:
			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();

				/* Write the line coding data to the control endpoint */
				Endpoint_Write_Control_Stream_LE(LineEncodingData, sizeof(CDC_LineEncoding_t));
				Endpoint_ClearOUT();
			}

			break;
		case CDC_REQ_SetLineEncoding:
			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();

				/* Read the line coding data in from the host into the global struct */
				Endpoint_Read_Control_Stream_LE(LineEncodingData, sizeof(CDC_LineEncoding_t));
				Endpoint_ClearIN();
			}

			break;
		case CDC_REQ_SetControlLineState:
			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
			{
				Endpoint_ClearSETUP();
				Endpoint_ClearStatusStage();
			}

			break;
	}
}

/** Function to manage CDC data transmission and reception to and from the host for the first CDC interface, which sends joystick
 *  movements to the host as ASCII strings.
 */
void CDC1_Task(void)
{
	char*       ReportString    = NULL;
	uint8_t     JoyStatus_LCL   = Joystick_GetStatus();
	static bool ActionSent      = false;

	/* Device must be connected and configured for the task to run */
	if (USB_DeviceState != DEVICE_STATE_Configured)
	  return;

	/* Determine if a joystick action has occurred */
	if (JoyStatus_LCL & JOY_UP)
	  ReportString = "Joystick Up\r\n";
	else if (JoyStatus_LCL & JOY_DOWN)
	  ReportString = "Joystick Down\r\n";
	else if (JoyStatus_LCL & JOY_LEFT)
	  ReportString = "Joystick Left\r\n";
	else if (JoyStatus_LCL & JOY_RIGHT)
	  ReportString = "Joystick Right\r\n";
	else if (JoyStatus_LCL & JOY_PRESS)
	  ReportString = "Joystick Pressed\r\n";
	else
	  ActionSent = false;

	/* Flag management - Only allow one string to be sent per action */
	if ((ReportString != NULL) && (ActionSent == false) && LineEncoding1.BaudRateBPS)
	{
		ActionSent = true;

		/* Select the Serial Tx Endpoint */
		Endpoint_SelectEndpoint(CDC1_TX_EPADDR);

		/* Write the String to the Endpoint */
		Endpoint_Write_Stream_LE(ReportString, strlen(ReportString), NULL);

		/* Finalize the stream transfer to send the last packet */
		Endpoint_ClearIN();

		/* Wait until the endpoint is ready for another packet */
		Endpoint_WaitUntilReady();

		/* Send an empty packet to ensure that the host does not buffer data sent to it */
		Endpoint_ClearIN();
	}

	/* Select the Serial Rx Endpoint */
	Endpoint_SelectEndpoint(CDC1_RX_EPADDR);

	/* Throw away any received data from the host */
	if (Endpoint_IsOUTReceived())
	  Endpoint_ClearOUT();
}

/** Function to manage CDC data transmission and reception to and from the host for the second CDC interface, which echoes back
 *  all data sent to it from the host.
 */
void CDC2_Task(void)
{
	/* Device must be connected and configured for the task to run */
	if (USB_DeviceState != DEVICE_STATE_Configured)
	  return;

	/* Select the Serial Rx Endpoint */
	Endpoint_SelectEndpoint(CDC2_RX_EPADDR);

	/* Check to see if any data has been received */
	if (Endpoint_IsOUTReceived())
	{
		/* Create a temp buffer big enough to hold the incoming endpoint packet */
		uint8_t  Buffer[Endpoint_BytesInEndpoint()];

		/* Remember how large the incoming packet is */
		uint16_t DataLength = Endpoint_BytesInEndpoint();

		/* Read in the incoming packet into the buffer */
		Endpoint_Read_Stream_LE(&Buffer, DataLength, NULL);

		/* Finalize the stream transfer to send the last packet */
		Endpoint_ClearOUT();

		/* Select the Serial Tx Endpoint */
		Endpoint_SelectEndpoint(CDC2_TX_EPADDR);

		/* Write the received data to the endpoint */
		Endpoint_Write_Stream_LE(&Buffer, DataLength, NULL);

		/* Finalize the stream transfer to send the last packet */
		Endpoint_ClearIN();

		/* Wait until the endpoint is ready for the next packet */
		Endpoint_WaitUntilReady();

		/* Send an empty packet to prevent host buffering */
		Endpoint_ClearIN();
	}
}
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