#include "biosvar.h" // struct bregs
#include "util.h" // debug_enter
+static char panic_msg_keyb_buffer_full[] = "%s: keyboard input buffer full\n";
+
+static void
+set_kbd_command_byte(u8 command_byte)
+{
+ if (inb(PORT_PS2_STATUS) & 0x02)
+ BX_PANIC(panic_msg_keyb_buffer_full, "setkbdcomm");
+ outb(0xD4, PORT_PS2_STATUS);
+
+ outb(0x60, PORT_PS2_STATUS); // write command byte
+ outb(command_byte, PORT_PS2_DATA);
+}
+
+static u8
+inhibit_mouse_int_and_events()
+{
+ // Turn off IRQ generation and aux data line
+ if (inb(PORT_PS2_STATUS) & 0x02)
+ BX_PANIC(panic_msg_keyb_buffer_full,"inhibmouse");
+ outb(0x20, PORT_PS2_STATUS); // get command byte
+ while ((inb(PORT_PS2_STATUS) & 0x01) != 0x01)
+ ;
+ u8 prev_command_byte = inb(PORT_PS2_DATA);
+ u8 command_byte = prev_command_byte;
+ //while ( (inb(PORT_PS2_STATUS) & 0x02) );
+ if ( inb(PORT_PS2_STATUS) & 0x02 )
+ BX_PANIC(panic_msg_keyb_buffer_full,"inhibmouse");
+ command_byte &= 0xfd; // turn off IRQ 12 generation
+ command_byte |= 0x20; // disable mouse serial clock line
+ outb(0x60, PORT_PS2_STATUS); // write command byte
+ outb(command_byte, PORT_PS2_DATA);
+ return prev_command_byte;
+}
+
+static void
+enable_mouse_int_and_events()
+{
+ // Turn on IRQ generation and aux data line
+ if ( inb(PORT_PS2_STATUS) & 0x02 )
+ BX_PANIC(panic_msg_keyb_buffer_full,"enabmouse");
+ outb(0x20, PORT_PS2_STATUS); // get command byte
+ while ((inb(PORT_PS2_STATUS) & 0x01) != 0x01)
+ ;
+ u8 command_byte = inb(PORT_PS2_DATA);
+ //while ( (inb(PORT_PS2_STATUS) & 0x02) );
+ if (inb(PORT_PS2_STATUS) & 0x02)
+ BX_PANIC(panic_msg_keyb_buffer_full,"enabmouse");
+ command_byte |= 0x02; // turn on IRQ 12 generation
+ command_byte &= 0xdf; // enable mouse serial clock line
+ outb(0x60, PORT_PS2_STATUS); // write command byte
+ outb(command_byte, PORT_PS2_DATA);
+}
+
+static void
+send_to_mouse_ctrl(u8 sendbyte)
+{
+ // wait for chance to write to ctrl
+ if (inb(PORT_PS2_STATUS) & 0x02)
+ BX_PANIC(panic_msg_keyb_buffer_full,"sendmouse");
+ outb(0xD4, PORT_PS2_STATUS);
+ outb(sendbyte, PORT_PS2_DATA);
+}
+
+static void
+get_mouse_data(u8 *data)
+{
+ while ((inb(PORT_PS2_STATUS) & 0x21) != 0x21)
+ ;
+ *data = inb(PORT_PS2_DATA);
+}
+
+#define RET_SUCCESS 0x00
+#define RET_EINVFUNCTION 0x01
+#define RET_EINVINPUT 0x02
+#define RET_EINTERFACE 0x03
+#define RET_ENEEDRESEND 0x04
+#define RET_ENOHANDLER 0x05
+
+// Disable Mouse
+static void
+mouse_15c20000(struct bregs *regs)
+{
+ inhibit_mouse_int_and_events(); // disable IRQ12 and packets
+ send_to_mouse_ctrl(0xF5); // disable mouse command
+ u8 mouse_data1;
+ get_mouse_data(&mouse_data1);
+ handle_ret(regs, RET_SUCCESS);
+}
+
+#define BX_DEBUG_INT15(args...)
+
+// Enable Mouse
+static void
+mouse_15c20001(struct bregs *regs)
+{
+ u8 mouse_flags_2 = GET_EBDA(mouse_flag2);
+ if ((mouse_flags_2 & 0x80) == 0) {
+ BX_DEBUG_INT15("INT 15h C2 Enable Mouse, no far call handler\n");
+ handle_ret(regs, RET_ENOHANDLER);
+ return;
+ }
+ inhibit_mouse_int_and_events(); // disable IRQ12 and packets
+ send_to_mouse_ctrl(0xF4); // enable mouse command
+ u8 mouse_data1;
+ get_mouse_data(&mouse_data1);
+ if (mouse_data1 == 0xFA) {
+ enable_mouse_int_and_events(); // turn IRQ12 and packet generation on
+ handle_ret(regs, RET_SUCCESS);
+ return;
+ }
+ handle_ret(regs, RET_ENEEDRESEND);
+}
+
+static void
+mouse_15c200XX(struct bregs *regs)
+{
+ handle_ret(regs, RET_EINVFUNCTION);
+}
+
+// Disable/Enable Mouse
+static void
+mouse_15c200(struct bregs *regs)
+{
+ switch (regs->bh) {
+ case 0x00: mouse_15c20000(regs); break;
+ case 0x01: mouse_15c20001(regs); break;
+ default: mouse_15c200XX(regs); break;
+ }
+}
+
+// Reset Mouse
+static void
+mouse_15c201(struct bregs *regs)
+{
+ inhibit_mouse_int_and_events(); // disable IRQ12 and packets
+ send_to_mouse_ctrl(0xFF); // reset mouse command
+ u8 mouse_data1, mouse_data2, mouse_data3;
+ get_mouse_data(&mouse_data3);
+ // if no mouse attached, it will return RESEND
+ if (mouse_data3 == 0xfe) {
+ handle_ret(regs, RET_ENEEDRESEND);
+ return;
+ }
+ if (mouse_data3 != 0xfa)
+ BX_PANIC("Mouse reset returned %02x (should be ack)\n"
+ , (unsigned)mouse_data3);
+ get_mouse_data(&mouse_data1);
+ get_mouse_data(&mouse_data2);
+ // turn IRQ12 and packet generation on
+ enable_mouse_int_and_events();
+ regs->bl = mouse_data1;
+ regs->bh = mouse_data2;
+ handle_ret(regs, RET_SUCCESS);
+}
+
+// Set Sample Rate
+static void
+mouse_15c202(struct bregs *regs)
+{
+ if (regs->bh >= 7) {
+ handle_ret(regs, RET_EUNSUPPORTED);
+ return;
+ }
+ u8 mouse_data1 = regs->bh * 20;
+ if (!mouse_data1)
+ mouse_data1 = 10;
+ send_to_mouse_ctrl(0xF3); // set sample rate command
+ u8 mouse_data2;
+ get_mouse_data(&mouse_data2);
+ send_to_mouse_ctrl(mouse_data1);
+ get_mouse_data(&mouse_data2);
+ handle_ret(regs, RET_SUCCESS);
+}
+
+// Set Resolution
+static void
+mouse_15c203(struct bregs *regs)
+{
+ // BH:
+ // 0 = 25 dpi, 1 count per millimeter
+ // 1 = 50 dpi, 2 counts per millimeter
+ // 2 = 100 dpi, 4 counts per millimeter
+ // 3 = 200 dpi, 8 counts per millimeter
+ bprintf(0, "ebda_seg=%x\n", GET_BDA(ebda_seg));
+ u8 comm_byte = inhibit_mouse_int_and_events(); // disable IRQ12 and packets
+ if (regs->bh >= 4) {
+ handle_ret(regs, RET_EUNSUPPORTED);
+ goto done;
+ }
+ send_to_mouse_ctrl(0xE8); // set resolution command
+ u8 mouse_data1;
+ get_mouse_data(&mouse_data1);
+ if (mouse_data1 != 0xfa)
+ BX_PANIC("Mouse status returned %02x (should be ack)\n"
+ , (unsigned)mouse_data1);
+ send_to_mouse_ctrl(regs->bh);
+ get_mouse_data(&mouse_data1);
+ if (mouse_data1 != 0xfa)
+ BX_PANIC("Mouse status returned %02x (should be ack)\n"
+ , (unsigned)mouse_data1);
+ handle_ret(regs, RET_SUCCESS);
+
+done:
+ set_kbd_command_byte(comm_byte); // restore IRQ12 and serial enable
+}
+
+// Get Device ID
+static void
+mouse_15c204(struct bregs *regs)
+{
+ inhibit_mouse_int_and_events(); // disable IRQ12 and packets
+ send_to_mouse_ctrl(0xF2); // get mouse ID command
+ u8 mouse_data1, mouse_data2;
+ get_mouse_data(&mouse_data1);
+ get_mouse_data(&mouse_data2);
+ regs->bh = mouse_data2;
+ handle_ret(regs, RET_SUCCESS);
+}
+
+// Initialize Mouse
+static void
+mouse_15c205(struct bregs *regs)
+{
+ if (regs->bh != 3) {
+ handle_ret(regs, RET_EINTERFACE);
+ return;
+ }
+ bprintf(0, "ebda_seg=%x\n", GET_BDA(ebda_seg));
+ SET_EBDA(mouse_flag1, 0x00);
+ SET_EBDA(mouse_flag2, regs->bh);
+
+ // Reset Mouse
+ mouse_15c201(regs);
+}
+
+// Return Status
+static void
+mouse_15c20600(struct bregs *regs)
+{
+ u8 comm_byte = inhibit_mouse_int_and_events(); // disable IRQ12 and packets
+ send_to_mouse_ctrl(0xE9); // get mouse info command
+ u8 mouse_data1, mouse_data2, mouse_data3;
+ get_mouse_data(&mouse_data1);
+ if (mouse_data1 != 0xfa)
+ BX_PANIC("Mouse status returned %02x (should be ack)\n"
+ , (unsigned)mouse_data1);
+ get_mouse_data(&mouse_data1);
+ get_mouse_data(&mouse_data2);
+ get_mouse_data(&mouse_data3);
+ regs->bl = mouse_data1;
+ regs->cl = mouse_data2;
+ regs->dl = mouse_data3;
+ handle_ret(regs, RET_SUCCESS);
+ set_kbd_command_byte(comm_byte); // restore IRQ12 and serial enable
+}
+
+static void
+set_scaling(struct bregs *regs, u8 cmd)
+{
+ u8 comm_byte = inhibit_mouse_int_and_events(); // disable IRQ12 and packets
+ send_to_mouse_ctrl(0xE6);
+ u8 mouse_data1;
+ get_mouse_data(&mouse_data1);
+ if (mouse_data1 != 0xFA)
+ handle_ret(regs, RET_EUNSUPPORTED);
+ else
+ handle_ret(regs, RET_SUCCESS);
+ set_kbd_command_byte(comm_byte); // restore IRQ12 and serial enable
+}
+
+// Set Scaling Factor to 1:1
+static void
+mouse_15c20601(struct bregs *regs)
+{
+ set_scaling(regs, 0xE6);
+}
+
+// Set Scaling Factor to 2:1
+static void
+mouse_15c20602(struct bregs *regs)
+{
+ set_scaling(regs, 0xE7);
+}
+
+static void
+mouse_15c206XX(struct bregs *regs)
+{
+ BX_PANIC("INT 15h C2 AL=6, BH=%02x\n", regs->bh);
+}
+
+// Return Status & Set Scaling Factor...
+static void
+mouse_15c206(struct bregs *regs)
+{
+ switch (regs->bh) {
+ case 0x00: mouse_15c20600(regs); break;
+ case 0x01: mouse_15c20601(regs); break;
+ case 0x02: mouse_15c20602(regs); break;
+ default: mouse_15c206XX(regs); break;
+ }
+}
+
+// Set Mouse Handler Address
+static void
+mouse_15c207(struct bregs *regs)
+{
+ u32 farptr = (regs->es << 16) | regs->bx;
+ SET_EBDA(far_call_pointer, farptr);
+ u8 mouse_flags_2 = GET_EBDA(mouse_flag2);
+ if (! farptr) {
+ /* remove handler */
+ if ((mouse_flags_2 & 0x80) != 0) {
+ mouse_flags_2 &= ~0x80;
+ inhibit_mouse_int_and_events(); // disable IRQ12 and packets
+ }
+ } else {
+ /* install handler */
+ mouse_flags_2 |= 0x80;
+ }
+ SET_EBDA(mouse_flag2, mouse_flags_2);
+ handle_ret(regs, RET_SUCCESS);
+}
+
+static void
+mouse_15c2XX(struct bregs *regs)
+{
+ handle_ret(regs, RET_EINVFUNCTION);
+}
+
void
handle_15c2(struct bregs *regs)
{
- // XXX
+ debug_stub(regs);
+
+ if (! CONFIG_PS2_MOUSE) {
+ handle_ret(regs, RET_EUNSUPPORTED);
+ return;
+ }
+
+ switch (regs->al) {
+ case 0x00: mouse_15c200(regs); break;
+ case 0x01: mouse_15c201(regs); break;
+ case 0x02: mouse_15c202(regs); break;
+ case 0x03: mouse_15c203(regs); break;
+ case 0x04: mouse_15c204(regs); break;
+ case 0x05: mouse_15c205(regs); break;
+ case 0x06: mouse_15c206(regs); break;
+ case 0x07: mouse_15c207(regs); break;
+ default: mouse_15c2XX(regs); break;
+ }
}
-static u8
+static void
int74_function()
{
- // XXX
- return 0;
+ u8 v = inb(PORT_PS2_STATUS);
+ if ((v & 0x21) != 0x21)
+ return;
+
+ v = inb(PORT_PS2_DATA);
+
+ u8 mouse_flags_1 = GET_EBDA(mouse_flag1);
+ u8 mouse_flags_2 = GET_EBDA(mouse_flag2);
+
+ if ((mouse_flags_2 & 0x80) != 0x80)
+ return;
+
+ u8 package_count = mouse_flags_2 & 0x07;
+ u8 index = mouse_flags_1 & 0x07;
+ SET_EBDA(mouse_data[index], v);
+
+ if ((index+1) < package_count) {
+ mouse_flags_1++;
+ SET_EBDA(mouse_flag1, mouse_flags_1);
+ return;
+ }
+
+ //BX_DEBUG_INT74("int74_function: make_farcall=1\n");
+ u16 status = GET_EBDA(mouse_data[0]);
+ u16 X = GET_EBDA(mouse_data[1]);
+ u16 Y = GET_EBDA(mouse_data[2]);
+ SET_EBDA(mouse_flag1, 0);
+ // check if far call handler installed
+ if (! (mouse_flags_2 & 0x80))
+ return;
+
+ u32 func = GET_EBDA(far_call_pointer);
+ asm volatile(
+ "pushl %%ebp\n"
+ "pushfl\n"
+ "pushl %0\n"
+ "pushw %w1\n" // status
+ "pushw %w2\n" // X
+ "pushw %w3\n" // Y
+ "pushw $0\n" // Z
+ "lcallw *8(%%esp)\n"
+ "addl $12, %%esp\n"
+ "popfl\n"
+ "popl %%ebp\n"
+ : "+a" (func), "+b" (status), "+c" (X), "+d" (Y)
+ :
+ : "esi", "edi"
+ );
}
// INT74h : PS/2 mouse hardware interrupt
debug_enter(regs);
irq_enable();
- u8 ret = int74_function();
- if (ret) {
- // XXX - far call to ptr at ebda:0022
- }
+ int74_function();
irq_disable();
+
eoi_both_pics();
}
projects / seabios.git / commitdiff