| /branches/dd/kernel/genarch/src/drivers/ns16550/ns16550.c |
|---|
| 0,0 → 1,116 |
| /* |
| * Copyright (c) 2009 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 genarch |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief NS 16550 serial controller driver. |
| */ |
| #include <genarch/drivers/ns16550/ns16550.h> |
| #include <ddi/irq.h> |
| #include <arch/asm.h> |
| #include <console/chardev.h> |
| #include <mm/slab.h> |
| #define LSR_DATA_READY 0x01 |
| /** Initialize ns16550. |
| * |
| * @param dev Addrress of the beginning of the device in I/O space. |
| * @param devno Device number. |
| * @param inr Interrupt number. |
| * @param cir Clear interrupt function. |
| * @param cir_arg First argument to cir. |
| * @param devout Output character device. |
| * |
| * @return True on success, false on failure. |
| */ |
| bool |
| ns16550_init(ns16550_t *dev, devno_t devno, inr_t inr, cir_t cir, void *cir_arg, |
| chardev_t *devout) |
| { |
| ns16550_instance_t *instance; |
| instance = malloc(sizeof(ns16550_instance_t), FRAME_ATOMIC); |
| if (!instance) |
| return false; |
| instance->devno = devno; |
| instance->ns16550 = dev; |
| instance->devout = devout; |
| irq_initialize(&instance->irq); |
| instance->irq.devno = devno; |
| instance->irq.inr = inr; |
| instance->irq.claim = ns16550_claim; |
| instance->irq.handler = ns16550_irq_handler; |
| instance->irq.instance = instance; |
| instance->irq.cir = cir; |
| instance->irq.cir_arg = cir_arg; |
| irq_register(&instance->irq); |
| while ((pio_read_8(&dev->lsr) & LSR_DATA_READY)) |
| (void) pio_read_8(&dev->rbr); |
| /* Enable interrupts */ |
| pio_write_8(&dev->ier, IER_ERBFI); |
| pio_write_8(&dev->mcr, MCR_OUT2); |
| return true; |
| } |
| irq_ownership_t ns16550_claim(irq_t *irq) |
| { |
| ns16550_instance_t *instance = irq->instance; |
| ns16550_t *dev = instance->ns16550; |
| if (pio_read_8(&dev->lsr) & LSR_DATA_READY) |
| return IRQ_ACCEPT; |
| else |
| return IRQ_DECLINE; |
| } |
| void ns16550_irq_handler(irq_t *irq) |
| { |
| ns16550_instance_t *instance = irq->instance; |
| ns16550_t *dev = instance->ns16550; |
| if (pio_read_8(&dev->lsr) & LSR_DATA_READY) { |
| uint8_t x; |
| x = pio_read_8(&dev->rbr); |
| if (instance->devout) |
| chardev_push_character(instance->devout, x); |
| } |
| } |
| /** @} |
| */ |
| Property changes: |
| Added: svn:mergeinfo |
| /branches/dd/kernel/genarch/src/drivers/i8042/i8042.c |
|---|
| 0,0 → 1,109 |
| /* |
| * Copyright (c) 2009 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 genarch |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief i8042 processor driver |
| * |
| * It takes care of the i8042 serial communication. |
| */ |
| #include <genarch/drivers/i8042/i8042.h> |
| #include <genarch/drivers/legacy/ia32/io.h> |
| #include <arch/asm.h> |
| #include <console/chardev.h> |
| #include <mm/slab.h> |
| #define i8042_SET_COMMAND 0x60 |
| #define i8042_COMMAND 0x69 |
| #define i8042_BUFFER_FULL_MASK 0x01 |
| #define i8042_WAIT_MASK 0x02 |
| static irq_ownership_t i8042_claim(irq_t *irq) |
| { |
| i8042_instance_t *i8042_instance = irq->instance; |
| i8042_t *dev = i8042_instance->i8042; |
| if (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK) |
| return IRQ_ACCEPT; |
| else |
| return IRQ_DECLINE; |
| } |
| static void i8042_irq_handler(irq_t *irq) |
| { |
| i8042_instance_t *instance = irq->instance; |
| i8042_t *dev = instance->i8042; |
| uint8_t data; |
| uint8_t status; |
| if (((status = pio_read_8(&dev->status)) & i8042_BUFFER_FULL_MASK)) { |
| data = pio_read_8(&dev->data); |
| if (instance->devout) |
| chardev_push_character(instance->devout, data); |
| } |
| } |
| /** Initialize i8042. */ |
| bool |
| i8042_init(i8042_t *dev, devno_t devno, inr_t inr, chardev_t *devout) |
| { |
| i8042_instance_t *instance; |
| instance = malloc(sizeof(i8042_instance_t), FRAME_ATOMIC); |
| if (!instance) |
| return false; |
| instance->devno = devno; |
| instance->i8042 = dev; |
| instance->devout = devout; |
| irq_initialize(&instance->irq); |
| instance->irq.devno = devno; |
| instance->irq.inr = inr; |
| instance->irq.claim = i8042_claim; |
| instance->irq.handler = i8042_irq_handler; |
| instance->irq.instance = instance; |
| irq_register(&instance->irq); |
| /* |
| * Clear input buffer. |
| */ |
| while (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK) |
| (void) pio_read_8(&dev->data); |
| return true; |
| } |
| /** @} |
| */ |
| Property changes: |
| Added: svn:mergeinfo |
| /branches/dd/kernel/genarch/src/drivers/z8530/z8530.c |
|---|
| 0,0 → 1,133 |
| /* |
| * Copyright (c) 2009 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 genarch |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief Zilog 8530 serial controller driver. |
| */ |
| #include <genarch/drivers/z8530/z8530.h> |
| #include <console/chardev.h> |
| #include <ddi/irq.h> |
| #include <arch/asm.h> |
| #include <mm/slab.h> |
| static inline void z8530_write(ioport8_t *ctl, uint8_t reg, uint8_t val) |
| { |
| /* |
| * Registers 8-15 will automatically issue the Point High |
| * command as their bit 3 is 1. |
| */ |
| pio_write_8(ctl, reg); /* select register */ |
| pio_write_8(ctl, val); /* write value */ |
| } |
| static inline uint8_t z8530_read(ioport8_t *ctl, uint8_t reg) |
| { |
| /* |
| * Registers 8-15 will automatically issue the Point High |
| * command as their bit 3 is 1. |
| */ |
| pio_write_8(ctl, reg); /* select register */ |
| return pio_read_8(ctl); |
| } |
| /** Initialize z8530. */ |
| bool |
| z8530_init(z8530_t *dev, devno_t devno, inr_t inr, cir_t cir, void *cir_arg, |
| chardev_t *devout) |
| { |
| z8530_instance_t *instance; |
| instance = malloc(sizeof(z8530_instance_t), FRAME_ATOMIC); |
| if (!instance) |
| return false; |
| instance->devno = devno; |
| instance->z8530 = dev; |
| instance->devout = devout; |
| irq_initialize(&instance->irq); |
| instance->irq.devno = devno; |
| instance->irq.inr = inr; |
| instance->irq.claim = z8530_claim; |
| instance->irq.handler = z8530_irq_handler; |
| instance->irq.instance = instance; |
| instance->irq.cir = cir; |
| instance->irq.cir_arg = cir_arg; |
| irq_register(&instance->irq); |
| (void) z8530_read(&dev->ctl_a, RR8); |
| /* |
| * Clear any pending TX interrupts or we never manage |
| * to set FHC UART interrupt state to idle. |
| */ |
| z8530_write(&dev->ctl_a, WR0, WR0_TX_IP_RST); |
| /* interrupt on all characters */ |
| z8530_write(&dev->ctl_a, WR1, WR1_IARCSC); |
| /* 8 bits per character and enable receiver */ |
| z8530_write(&dev->ctl_a, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
| /* Master Interrupt Enable. */ |
| z8530_write(&dev->ctl_a, WR9, WR9_MIE); |
| return true; |
| } |
| irq_ownership_t z8530_claim(irq_t *irq) |
| { |
| z8530_instance_t *instance = irq->instance; |
| z8530_t *dev = instance->z8530; |
| if (z8530_read(&dev->ctl_a, RR0) & RR0_RCA) |
| return IRQ_ACCEPT; |
| else |
| return IRQ_DECLINE; |
| } |
| void z8530_irq_handler(irq_t *irq) |
| { |
| z8530_instance_t *instance = irq->instance; |
| z8530_t *dev = instance->z8530; |
| uint8_t x; |
| if (z8530_read(&dev->ctl_a, RR0) & RR0_RCA) { |
| x = z8530_read(&dev->ctl_a, RR8); |
| if (instance->devout) |
| chardev_push_character(instance->devout, x); |
| } |
| } |
| /** @} |
| */ |
| Property changes: |
| Added: svn:mergeinfo |
| /branches/dd/kernel/genarch/src/drivers/ega/ega.c |
|---|
| 0,0 → 1,201 |
| /* |
| * 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 genarch_drivers |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief EGA driver. |
| */ |
| #include <genarch/drivers/ega/ega.h> |
| #include <putchar.h> |
| #include <mm/page.h> |
| #include <mm/as.h> |
| #include <mm/slab.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". |
| */ |
| SPINLOCK_INITIALIZE(egalock); |
| static uint32_t ega_cursor; |
| static uint8_t *videoram; |
| static uint8_t *backbuf; |
| static ioport8_t *ega_base; |
| #define EMPTY_CHAR 0x0720 |
| chardev_t ega_console; |
| /* |
| * This function takes care of scrolling. |
| */ |
| static void ega_check_cursor(void) |
| { |
| if (ega_cursor < EGA_SCREEN) |
| return; |
| memmove((void *) videoram, (void *) (videoram + EGA_COLS * 2), |
| (EGA_SCREEN - EGA_COLS) * 2); |
| memmove((void *) backbuf, (void *) (backbuf + EGA_COLS * 2), |
| (EGA_SCREEN - EGA_COLS) * 2); |
| memsetw(videoram + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR); |
| memsetw(backbuf + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR); |
| ega_cursor = ega_cursor - EGA_COLS; |
| } |
| static void ega_show_cursor(void) |
| { |
| pio_write_8(ega_base + EGA_INDEX_REG, 0x0a); |
| uint8_t stat = pio_read_8(ega_base + EGA_DATA_REG); |
| pio_write_8(ega_base + EGA_INDEX_REG, 0x0a); |
| pio_write_8(ega_base + EGA_DATA_REG, stat & (~(1 << 5))); |
| } |
| static void ega_move_cursor(void) |
| { |
| pio_write_8(ega_base + EGA_INDEX_REG, 0x0e); |
| pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff)); |
| pio_write_8(ega_base + EGA_INDEX_REG, 0x0f); |
| pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff)); |
| } |
| static void ega_sync_cursor(void) |
| { |
| pio_write_8(ega_base + EGA_INDEX_REG, 0x0e); |
| uint8_t hi = pio_read_8(ega_base + EGA_DATA_REG); |
| pio_write_8(ega_base + EGA_INDEX_REG, 0x0f); |
| uint8_t lo = pio_read_8(ega_base + EGA_DATA_REG); |
| ega_cursor = (hi << 8) | lo; |
| if (ega_cursor >= EGA_SCREEN) |
| ega_cursor = 0; |
| if ((ega_cursor % EGA_COLS) != 0) |
| ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
| memsetw(videoram + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR); |
| memsetw(backbuf + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR); |
| ega_check_cursor(); |
| ega_move_cursor(); |
| ega_show_cursor(); |
| } |
| static void ega_display_char(char ch, bool silent) |
| { |
| backbuf[ega_cursor * 2] = ch; |
| if (!silent) |
| videoram[ega_cursor * 2] = ch; |
| } |
| static void ega_putchar(chardev_t *dev __attribute__((unused)), const char ch, bool silent) |
| { |
| ipl_t ipl; |
| ipl = interrupts_disable(); |
| spinlock_lock(&egalock); |
| switch (ch) { |
| case '\n': |
| ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
| break; |
| case '\t': |
| ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
| break; |
| case '\b': |
| if (ega_cursor % EGA_COLS) |
| ega_cursor--; |
| break; |
| default: |
| ega_display_char(ch, silent); |
| ega_cursor++; |
| break; |
| } |
| ega_check_cursor(); |
| if (!silent) |
| ega_move_cursor(); |
| spinlock_unlock(&egalock); |
| interrupts_restore(ipl); |
| } |
| static chardev_operations_t ega_ops = { |
| .write = ega_putchar |
| }; |
| void ega_init(ioport8_t *base, uintptr_t videoram_phys) |
| { |
| /* Initialize the software structure. */ |
| ega_base = base; |
| backbuf = (uint8_t *) malloc(EGA_VRAM_SIZE, 0); |
| if (!backbuf) |
| panic("Unable to allocate backbuffer."); |
| videoram = (uint8_t *) hw_map(videoram_phys, EGA_VRAM_SIZE); |
| /* Synchronize the back buffer and cursor position. */ |
| memcpy(backbuf, videoram, EGA_VRAM_SIZE); |
| ega_sync_cursor(); |
| chardev_initialize("ega_out", &ega_console, &ega_ops); |
| stdout = &ega_console; |
| sysinfo_set_item_val("fb", NULL, true); |
| sysinfo_set_item_val("fb.kind", NULL, 2); |
| sysinfo_set_item_val("fb.width", NULL, EGA_COLS); |
| sysinfo_set_item_val("fb.height", NULL, EGA_ROWS); |
| sysinfo_set_item_val("fb.blinking", NULL, true); |
| sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys); |
| } |
| void ega_redraw(void) |
| { |
| memcpy(videoram, backbuf, EGA_VRAM_SIZE); |
| ega_move_cursor(); |
| ega_show_cursor(); |
| } |
| /** @} |
| */ |
| Property changes: |
| Added: svn:mergeinfo |