/tags/0.3.0/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 */ |
outb(PIC_PIC0PORT1, PIC_ICW1 | PIC_NEEDICW4); |
/* ICW2: IRQ 0 maps to INT IRQBASE */ |
outb(PIC_PIC0PORT2, IVT_IRQBASE); |
/* ICW3: pic1 using IRQ IRQ_PIC1 */ |
outb(PIC_PIC0PORT2, 1 << IRQ_PIC1); |
/* ICW4: i8086 mode */ |
outb(PIC_PIC0PORT2, 1); |
/* ICW1: ICW1, ICW4 to follow */ |
outb(PIC_PIC1PORT1, PIC_ICW1 | PIC_NEEDICW4); |
/* ICW2: IRQ 8 maps to INT (IVT_IRQBASE + 8) */ |
outb(PIC_PIC1PORT2, IVT_IRQBASE + 8); |
/* ICW3: pic1 is known as IRQ_PIC1 */ |
outb(PIC_PIC1PORT2, IRQ_PIC1); |
/* ICW4: i8086 mode */ |
outb(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 = inb(PIC_PIC0PORT2); |
outb(PIC_PIC0PORT2, (uint8_t) (x & (~(irqmask & 0xff)))); |
} |
if (irqmask >> 8) { |
x = inb(PIC_PIC1PORT2); |
outb(PIC_PIC1PORT2, (uint8_t) (x & (~(irqmask >> 8)))); |
} |
} |
void pic_disable_irqs(uint16_t irqmask) |
{ |
uint8_t x; |
if (irqmask & 0xff) { |
x = inb(PIC_PIC0PORT2); |
outb(PIC_PIC0PORT2, (uint8_t) (x | (irqmask & 0xff))); |
} |
if (irqmask >> 8) { |
x = inb(PIC_PIC1PORT2); |
outb(PIC_PIC1PORT2, (uint8_t) (x | (irqmask >> 8))); |
} |
} |
void pic_eoi(void) |
{ |
outb(0x20, 0x20); |
outb(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 |
} |
/** @} |
*/ |
/tags/0.3.0/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 0x40 |
#define CLK_PORT4 0x43 |
#define CLK_CONST 1193180 |
#define MAGIC_NUMBER 1194 |
static irq_t i8254_irq; |
static irq_ownership_t i8254_claim(void) |
{ |
return IRQ_ACCEPT; |
} |
static void i8254_irq_handler(irq_t *irq, void *arg __attribute__((unused)), ...) |
{ |
/* |
* 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) |
{ |
outb(CLK_PORT4, 0x36); |
pic_disable_irqs(1 << IRQ_CLK); |
outb(CLK_PORT1, (CLK_CONST / HZ) & 0xf); |
outb(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. |
*/ |
outb(CLK_PORT4, 0x30); |
outb(CLK_PORT1, 0xff); |
outb(CLK_PORT1, 0xff); |
do { |
/* will read both status and count */ |
outb(CLK_PORT4, 0xc2); |
not_ok = (uint8_t) ((inb(CLK_PORT1) >> 6) & 1); |
t1 = inb(CLK_PORT1); |
t1 |= inb(CLK_PORT1) << 8; |
} while (not_ok); |
asm_delay_loop(LOOPS); |
outb(CLK_PORT4, 0xd2); |
t2 = inb(CLK_PORT1); |
t2 |= inb(CLK_PORT1) << 8; |
/* |
* We want to determine the overhead of the calibrating mechanism. |
*/ |
outb(CLK_PORT4, 0xd2); |
o1 = inb(CLK_PORT1); |
o1 |= inb(CLK_PORT1) << 8; |
asm_fake_loop(LOOPS); |
outb(CLK_PORT4, 0xd2); |
o2 = inb(CLK_PORT1); |
o2 |= inb(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/0.3.0/kernel/arch/ia32/src/drivers/ega.c |
---|
0,0 → 1,161 |
/* |
* 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 EGA driver. |
*/ |
#include <arch/drivers/ega.h> |
#include <putchar.h> |
#include <mm/page.h> |
#include <mm/as.h> |
#include <arch/mm/page.h> |
#include <synch/spinlock.h> |
#include <arch/types.h> |
#include <arch/asm.h> |
#include <memstr.h> |
#include <console/chardev.h> |
#include <console/console.h> |
#include <sysinfo/sysinfo.h> |
#include <ddi/ddi.h> |
/* |
* The EGA driver. |
* Simple and short. Function for displaying characters and "scrolling". |
*/ |
static parea_t ega_parea; /**< Physical memory area for EGA video RAM. */ |
SPINLOCK_INITIALIZE(egalock); |
static uint32_t ega_cursor; |
static uint8_t *videoram; |
static void ega_putchar(chardev_t *d, const char ch); |
chardev_t ega_console; |
static chardev_operations_t ega_ops = { |
.write = ega_putchar |
}; |
static void ega_move_cursor(void); |
void ega_init(void) |
{ |
uint8_t hi, lo; |
videoram = (uint8_t *) hw_map(VIDEORAM, SCREEN * 2); |
outb(0x3d4, 0xe); |
hi = inb(0x3d5); |
outb(0x3d4, 0xf); |
lo = inb(0x3d5); |
ega_cursor = (hi << 8) | lo; |
chardev_initialize("ega_out", &ega_console, &ega_ops); |
stdout = &ega_console; |
ega_parea.pbase = VIDEORAM; |
ega_parea.vbase = (uintptr_t) videoram; |
ega_parea.frames = 1; |
ega_parea.cacheable = false; |
ddi_parea_register(&ega_parea); |
sysinfo_set_item_val("fb", NULL, true); |
sysinfo_set_item_val("fb.kind", NULL, 2); |
sysinfo_set_item_val("fb.width", NULL, ROW); |
sysinfo_set_item_val("fb.height", NULL, ROWS); |
sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM); |
sysinfo_set_item_val("fb.address.color", NULL, PAGE_COLOR((uintptr_t) |
videoram)); |
#ifndef CONFIG_FB |
putchar('\n'); |
#endif |
} |
static void ega_display_char(char ch) |
{ |
videoram[ega_cursor * 2] = ch; |
} |
/* |
* This function takes care of scrolling. |
*/ |
static void ega_check_cursor(void) |
{ |
if (ega_cursor < SCREEN) |
return; |
memcpy((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2); |
memsetw((uintptr_t) (videoram + (SCREEN - ROW) * 2), ROW, 0x0720); |
ega_cursor = ega_cursor - ROW; |
} |
void ega_putchar(chardev_t *d __attribute__((unused)), const char ch) |
{ |
ipl_t ipl; |
ipl = interrupts_disable(); |
spinlock_lock(&egalock); |
switch (ch) { |
case '\n': |
ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; |
break; |
case '\t': |
ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
break; |
case '\b': |
if (ega_cursor % ROW) |
ega_cursor--; |
break; |
default: |
ega_display_char(ch); |
ega_cursor++; |
break; |
} |
ega_check_cursor(); |
ega_move_cursor(); |
spinlock_unlock(&egalock); |
interrupts_restore(ipl); |
} |
void ega_move_cursor(void) |
{ |
outb(0x3d4, 0xe); |
outb(0x3d5, (uint8_t) ((ega_cursor >> 8) & 0xff)); |
outb(0x3d4, 0xf); |
outb(0x3d5, (uint8_t) (ega_cursor & 0xff)); |
} |
/** @} |
*/ |
/tags/0.3.0/kernel/arch/ia32/src/drivers/vesa.c |
---|
0,0 → 1,95 |
/* |
* 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; |
int vesa_present(void) |
{ |
if (vesa_width != 0xffff) |
return true; |
if (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: |
visual = VISUAL_RGB_5_6_5; |
break; |
case 24: |
visual = VISUAL_RGB_8_8_8; |
break; |
case 32: |
visual = VISUAL_RGB_0_8_8_8; |
break; |
default: |
panic("Unsupported bits per pixel"); |
} |
fb_init(vesa_ph_addr, vesa_width, vesa_height, vesa_scanline, visual); |
} |
#endif |
/** @} |
*/ |