| /tags/0.4.1/kernel/arch/ia32/src/drivers/vesa.c |
|---|
| 0,0 → 1,121 |
| /* |
| * Copyright (c) 2006 Jakub Vana |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| /** @addtogroup ia32 |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief VESA frame buffer driver. |
| */ |
| #ifdef CONFIG_FB |
| #include <genarch/fb/fb.h> |
| #include <genarch/fb/visuals.h> |
| #include <arch/drivers/vesa.h> |
| #include <putchar.h> |
| #include <mm/page.h> |
| #include <mm/frame.h> |
| #include <mm/as.h> |
| #include <arch/mm/page.h> |
| #include <synch/spinlock.h> |
| #include <arch/asm.h> |
| #include <arch/types.h> |
| #include <memstr.h> |
| #include <bitops.h> |
| uint32_t vesa_ph_addr; |
| uint16_t vesa_width; |
| uint16_t vesa_height; |
| uint16_t vesa_bpp; |
| uint16_t vesa_scanline; |
| uint8_t vesa_red_mask; |
| uint8_t vesa_red_pos; |
| uint8_t vesa_green_mask; |
| uint8_t vesa_green_pos; |
| uint8_t vesa_blue_mask; |
| uint8_t vesa_blue_pos; |
| int vesa_present(void) |
| { |
| if ((vesa_width != 0xffff) && (vesa_height != 0xffff)) |
| return true; |
| return false; |
| } |
| void vesa_init(void) |
| { |
| unsigned int visual; |
| switch (vesa_bpp) { |
| case 8: |
| visual = VISUAL_INDIRECT_8; |
| break; |
| case 16: |
| if ((vesa_red_mask == 5) && (vesa_red_pos == 10) |
| && (vesa_green_mask == 5) && (vesa_green_pos == 5) |
| && (vesa_blue_mask == 5) && (vesa_blue_pos == 0)) |
| visual = VISUAL_RGB_5_5_5_LE; |
| else |
| visual = VISUAL_RGB_5_6_5_LE; |
| break; |
| case 24: |
| visual = VISUAL_BGR_8_8_8; |
| break; |
| case 32: |
| visual = VISUAL_BGR_8_8_8_0; |
| break; |
| default: |
| panic("Unsupported bits per pixel."); |
| } |
| fb_properties_t vesa_props = { |
| .addr = vesa_ph_addr, |
| .offset = 0, |
| .x = vesa_width, |
| .y = vesa_height, |
| .scan = vesa_scanline, |
| .visual = visual, |
| }; |
| fb_init(&vesa_props); |
| } |
| void vesa_redraw(void) |
| { |
| fb_redraw(); |
| } |
| #endif |
| /** @} |
| */ |
| /tags/0.4.1/kernel/arch/ia32/src/drivers/i8254.c |
|---|
| 0,0 → 1,162 |
| /* |
| * Copyright (c) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| /** @addtogroup ia32 |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief i8254 chip driver. |
| * |
| * Low level time functions. |
| */ |
| #include <arch/types.h> |
| #include <time/clock.h> |
| #include <time/delay.h> |
| #include <arch/cycle.h> |
| #include <arch/interrupt.h> |
| #include <arch/drivers/i8259.h> |
| #include <arch/drivers/i8254.h> |
| #include <cpu.h> |
| #include <config.h> |
| #include <arch/pm.h> |
| #include <arch/asm.h> |
| #include <arch/cpuid.h> |
| #include <arch.h> |
| #include <time/delay.h> |
| #include <ddi/irq.h> |
| #include <ddi/device.h> |
| #define CLK_PORT1 ((ioport8_t *)0x40) |
| #define CLK_PORT4 ((ioport8_t *)0x43) |
| #define CLK_CONST 1193180 |
| #define MAGIC_NUMBER 1194 |
| static irq_t i8254_irq; |
| static irq_ownership_t i8254_claim(irq_t *irq) |
| { |
| return IRQ_ACCEPT; |
| } |
| static void i8254_irq_handler(irq_t *irq) |
| { |
| /* |
| * This IRQ is responsible for kernel preemption. |
| * Nevertheless, we are now holding a spinlock which prevents |
| * preemption. For this particular IRQ, we don't need the |
| * lock. We just release it, call clock() and then reacquire it again. |
| */ |
| spinlock_unlock(&irq->lock); |
| clock(); |
| spinlock_lock(&irq->lock); |
| } |
| void i8254_init(void) |
| { |
| irq_initialize(&i8254_irq); |
| i8254_irq.preack = true; |
| i8254_irq.devno = device_assign_devno(); |
| i8254_irq.inr = IRQ_CLK; |
| i8254_irq.claim = i8254_claim; |
| i8254_irq.handler = i8254_irq_handler; |
| irq_register(&i8254_irq); |
| i8254_normal_operation(); |
| } |
| void i8254_normal_operation(void) |
| { |
| pio_write_8(CLK_PORT4, 0x36); |
| pic_disable_irqs(1 << IRQ_CLK); |
| pio_write_8(CLK_PORT1, (CLK_CONST / HZ) & 0xf); |
| pio_write_8(CLK_PORT1, (CLK_CONST / HZ) >> 8); |
| pic_enable_irqs(1 << IRQ_CLK); |
| } |
| #define LOOPS 150000 |
| #define SHIFT 11 |
| void i8254_calibrate_delay_loop(void) |
| { |
| uint64_t clk1, clk2; |
| uint32_t t1, t2, o1, o2; |
| uint8_t not_ok; |
| /* |
| * One-shot timer. Count-down from 0xffff at 1193180Hz |
| * MAGIC_NUMBER is the magic value for 1ms. |
| */ |
| pio_write_8(CLK_PORT4, 0x30); |
| pio_write_8(CLK_PORT1, 0xff); |
| pio_write_8(CLK_PORT1, 0xff); |
| do { |
| /* will read both status and count */ |
| pio_write_8(CLK_PORT4, 0xc2); |
| not_ok = (uint8_t) ((pio_read_8(CLK_PORT1) >> 6) & 1); |
| t1 = pio_read_8(CLK_PORT1); |
| t1 |= pio_read_8(CLK_PORT1) << 8; |
| } while (not_ok); |
| asm_delay_loop(LOOPS); |
| pio_write_8(CLK_PORT4, 0xd2); |
| t2 = pio_read_8(CLK_PORT1); |
| t2 |= pio_read_8(CLK_PORT1) << 8; |
| /* |
| * We want to determine the overhead of the calibrating mechanism. |
| */ |
| pio_write_8(CLK_PORT4, 0xd2); |
| o1 = pio_read_8(CLK_PORT1); |
| o1 |= pio_read_8(CLK_PORT1) << 8; |
| asm_fake_loop(LOOPS); |
| pio_write_8(CLK_PORT4, 0xd2); |
| o2 = pio_read_8(CLK_PORT1); |
| o2 |= pio_read_8(CLK_PORT1) << 8; |
| CPU->delay_loop_const = |
| ((MAGIC_NUMBER * LOOPS) / 1000) / ((t1 - t2) - (o1 - o2)) + |
| (((MAGIC_NUMBER * LOOPS) / 1000) % ((t1 - t2) - (o1 - o2)) ? 1 : 0); |
| clk1 = get_cycle(); |
| delay(1 << SHIFT); |
| clk2 = get_cycle(); |
| CPU->frequency_mhz = (clk2 - clk1) >> SHIFT; |
| return; |
| } |
| /** @} |
| */ |
| /tags/0.4.1/kernel/arch/ia32/src/drivers/i8259.c |
|---|
| 0,0 → 1,134 |
| /* |
| * Copyright (c) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| /** @addtogroup ia32 |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief PIC driver. |
| * |
| * Programmable Interrupt Controller for UP systems based on i8259 chip. |
| */ |
| #include <arch/drivers/i8259.h> |
| #include <cpu.h> |
| #include <arch/types.h> |
| #include <arch/asm.h> |
| #include <arch.h> |
| #include <print.h> |
| #include <interrupt.h> |
| static void pic_spurious(int n, istate_t *istate); |
| void i8259_init(void) |
| { |
| /* ICW1: this is ICW1, ICW4 to follow */ |
| pio_write_8(PIC_PIC0PORT1, PIC_ICW1 | PIC_NEEDICW4); |
| /* ICW2: IRQ 0 maps to INT IRQBASE */ |
| pio_write_8(PIC_PIC0PORT2, IVT_IRQBASE); |
| /* ICW3: pic1 using IRQ IRQ_PIC1 */ |
| pio_write_8(PIC_PIC0PORT2, 1 << IRQ_PIC1); |
| /* ICW4: i8086 mode */ |
| pio_write_8(PIC_PIC0PORT2, 1); |
| /* ICW1: ICW1, ICW4 to follow */ |
| pio_write_8(PIC_PIC1PORT1, PIC_ICW1 | PIC_NEEDICW4); |
| /* ICW2: IRQ 8 maps to INT (IVT_IRQBASE + 8) */ |
| pio_write_8(PIC_PIC1PORT2, IVT_IRQBASE + 8); |
| /* ICW3: pic1 is known as IRQ_PIC1 */ |
| pio_write_8(PIC_PIC1PORT2, IRQ_PIC1); |
| /* ICW4: i8086 mode */ |
| pio_write_8(PIC_PIC1PORT2, 1); |
| /* |
| * Register interrupt handler for the PIC spurious interrupt. |
| */ |
| exc_register(VECTOR_PIC_SPUR, "pic_spurious", (iroutine) pic_spurious); |
| /* |
| * Set the enable/disable IRQs handlers. |
| * Set the End-of-Interrupt handler. |
| */ |
| enable_irqs_function = pic_enable_irqs; |
| disable_irqs_function = pic_disable_irqs; |
| eoi_function = pic_eoi; |
| pic_disable_irqs(0xffff); /* disable all irq's */ |
| pic_enable_irqs(1 << IRQ_PIC1); /* but enable pic1 */ |
| } |
| void pic_enable_irqs(uint16_t irqmask) |
| { |
| uint8_t x; |
| if (irqmask & 0xff) { |
| x = pio_read_8(PIC_PIC0PORT2); |
| pio_write_8(PIC_PIC0PORT2, (uint8_t) (x & (~(irqmask & 0xff)))); |
| } |
| if (irqmask >> 8) { |
| x = pio_read_8(PIC_PIC1PORT2); |
| pio_write_8(PIC_PIC1PORT2, (uint8_t) (x & (~(irqmask >> 8)))); |
| } |
| } |
| void pic_disable_irqs(uint16_t irqmask) |
| { |
| uint8_t x; |
| if (irqmask & 0xff) { |
| x = pio_read_8(PIC_PIC0PORT2); |
| pio_write_8(PIC_PIC0PORT2, (uint8_t) (x | (irqmask & 0xff))); |
| } |
| if (irqmask >> 8) { |
| x = pio_read_8(PIC_PIC1PORT2); |
| pio_write_8(PIC_PIC1PORT2, (uint8_t) (x | (irqmask >> 8))); |
| } |
| } |
| void pic_eoi(void) |
| { |
| pio_write_8((ioport8_t *)0x20, 0x20); |
| pio_write_8((ioport8_t *)0xa0, 0x20); |
| } |
| void pic_spurious(int n __attribute__((unused)), istate_t *istate __attribute__((unused))) |
| { |
| #ifdef CONFIG_DEBUG |
| printf("cpu%u: PIC spurious interrupt\n", CPU->id); |
| #endif |
| } |
| /** @} |
| */ |