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-rw-r--r--src/arch/amd64/drivers/bochs.c73
-rw-r--r--src/arch/amd64/drivers/pci.c166
-rw-r--r--src/arch/amd64/drivers/pic.c89
-rw-r--r--src/arch/amd64/drivers/pic.h31
-rw-r--r--src/arch/amd64/drivers/serial.c48
5 files changed, 0 insertions, 407 deletions
diff --git a/src/arch/amd64/drivers/bochs.c b/src/arch/amd64/drivers/bochs.c
deleted file mode 100644
index b3908f9..0000000
--- a/src/arch/amd64/drivers/bochs.c
+++ /dev/null
@@ -1,73 +0,0 @@
-#include <lib.h>
-#include <memory.h>
-#include <stdint.h>
-#include <panic.h>
-#include <pci.h>
-#include <bochs.h>
-
-#include "../bindings.h"
-
-#define INDEX 0x1CE
-#define DATA 0x1CF
-
-#define INDEX_ID 0
-#define INDEX_XRES 1
-#define INDEX_YRES 2
-#define INDEX_BPP 3
-#define INDEX_ENABLE 4
-#define INDEX_BANK 5
-#define INDEX_VIRT_WIDTH 6
-#define INDEX_VIRT_HEIGHT 7
-#define INDEX_X_OFFSET 8
-#define INDEX_Y_OFFSET 9
-
-#define DATA_DISP_DISABLE 0x00
-#define DATA_DISP_ENABLE 0x01
-#define DATA_LFB_ENABLE 0x40
-#define DATA_NO_CLEAR_MEM 0x80
-
-#define BOCHS_PCI_VENDOR 0x1234
-#define BOCHS_PCI_DEVICE 0x1111
-
-static void write(uint16_t index, uint16_t data) {
- outw(INDEX, index);
- outw(DATA, data);
-}
-
-static uint16_t read(uint16_t value) {
- outw(INDEX, value);
- return inw(DATA);
-}
-
-static int is_available(void) {
- return (read(INDEX_ID) == 0xB0C5);
-}
-
-static void set_mode(uint16_t width, uint16_t height, uint16_t bit_depth, int lfb, int clear) {
- write(INDEX_ENABLE, DATA_DISP_DISABLE);
- write(INDEX_XRES, width);
- write(INDEX_YRES, height);
- write(INDEX_BPP, bit_depth);
- write(INDEX_ENABLE, DATA_DISP_ENABLE |
- (lfb ? DATA_LFB_ENABLE : 0) |
- (clear ? 0 : DATA_NO_CLEAR_MEM));
-}
-
-volatile uint32_t *bochs_init(uint16_t width, uint16_t height, uint8_t bit_depth) {
-
- set_mode(width, height, bit_depth, true, true);
-
- if (!is_available())
- return NULL;
-
- struct pci_device bochs = {0};
- bool found = pci_findby_id(&bochs, BOCHS_PCI_DEVICE, BOCHS_PCI_VENDOR, NULL);
- if (!found)
- return NULL;
-
- uint32_t bar0 = pci_rcfg_d(bochs, PCI_BAR0_D);
- uint32_t *addr = (uint32_t *) (uintptr_t) bar0;
- addr = mmap(addr, width * height * bit_depth);
-
- return addr;
-}
diff --git a/src/arch/amd64/drivers/pci.c b/src/arch/amd64/drivers/pci.c
deleted file mode 100644
index 7aa11c8..0000000
--- a/src/arch/amd64/drivers/pci.c
+++ /dev/null
@@ -1,166 +0,0 @@
-#include <stdint.h>
-#include <pci.h>
-#include <panic.h>
-#include <lib.h>
-
-#include "../bindings.h"
-
-#define CONF_ADDR 0xCF8
-#define CONF_DATA 0xCFC
-
-#define TABLE_LEN 16
-
-struct pci_table_entry {
- struct pci_device device;
- uint16_t device_id;
- uint16_t vendor_id;
- uint8_t class;
- uint8_t subclass;
- uint8_t prog_if;
- uint8_t revision;
-};
-
-static struct pci_table_entry pci_table[TABLE_LEN];
-static size_t pci_table_next = 0;
-
-uint32_t pci_rcfg_d(struct pci_device dev, uint8_t offset) {
- uint32_t addr = 0x80000000;
- addr |= ((uint32_t)dev.bus) << 16;
- addr |= ((uint32_t)dev.device) << 11;
- addr |= ((uint32_t)dev.function) << 8;
- addr |= offset & 0xFC;
-
- outl(CONF_ADDR, addr);
- uint32_t in = inl(CONF_DATA);
- return in;
-}
-
-uint16_t pci_rcfg_w(struct pci_device dev, uint8_t offset) {
- uint32_t dword = pci_rcfg_d(dev, offset);
- return (uint16_t)((dword >> ((offset & 2) * 8)) & 0xFFFF);
-}
-
-uint8_t pci_rcfg_b(struct pci_device dev, uint8_t offset) {
- uint32_t dword = pci_rcfg_d(dev, offset);
- return (uint8_t)((dword >> ((offset & 3) * 8)) & 0xFF);
-}
-
-void pci_wcfg_d(struct pci_device dev, uint8_t offset, uint32_t dword) {
- uint32_t addr = 0x80000000;
- addr |= ((uint32_t)dev.bus) << 16;
- addr |= ((uint32_t)dev.device) << 11;
- addr |= ((uint32_t)dev.function) << 8;
- addr |= offset & 0xFC;
-
- outl(CONF_ADDR, addr);
- outl(CONF_DATA, dword);
-}
-
-void pci_wcfg_w(struct pci_device dev, uint8_t offset, uint16_t word) {
- size_t shift = (offset & 2) * 8;
- uint32_t dword = pci_rcfg_d(dev, offset);
- dword &= ~(0xFFFF << shift);
- dword |= word << shift;
- pci_wcfg_d(dev, offset, dword);
-}
-
-void pci_wcfg_b(struct pci_device dev, uint8_t offset, uint8_t byte) {
- size_t shift = (offset & 3) * 8;
- uint32_t dword = pci_rcfg_d(dev, offset);
- dword &= ~(0xFF << shift);
- dword |= byte << shift;
- pci_wcfg_d(dev, offset, dword);
-}
-
-static void print_device(struct pci_table_entry *entry) {
- kprintf(
- "BUS: %#-4x DEV: %#-4x FUNC: %#-4x ID: %04x:%04x CLASS: %02x:%02x:%02x REV: %#02x\n",
- entry->device.bus,
- entry->device.device,
- entry->device.function,
- entry->vendor_id,
- entry->device_id,
- entry->class,
- entry->subclass,
- entry->prog_if,
- entry->revision
- );
-}
-
-static struct pci_table_entry *load_device(struct pci_device dev) {
- if (pci_table_next >= TABLE_LEN) panic("Too many PCI devices: limit is %d", TABLE_LEN);
- struct pci_table_entry *entry = &pci_table[pci_table_next++];
- entry->device = dev;
- uint32_t dword0 = pci_rcfg_d(dev, 0);
- uint32_t dword2 = pci_rcfg_d(dev, 8);
-
- entry->device_id = (dword0 >> 16) & 0xFFFF;
- entry->vendor_id = dword0 & 0xFFFF;
-
- entry->class = (dword2 >> 24) & 0xFF;
- entry->subclass = (dword2 >> 16) & 0xFF;
- entry->prog_if = (dword2 >> 8) & 0xFF;
- entry->revision = dword2 & 0xFF;
-
- return entry;
-}
-
-void pci_init(void) {
- pci_table_next = 0;
- struct pci_device pcidev;
- for (int bus = 0; bus < 256; bus++) {
- pcidev.bus = bus;
- for (int dev = 0; dev < 32; dev++) {
- pcidev.device = dev;
- pcidev.function = 0;
-
- uint16_t vendor = pci_rcfg_w(pcidev, 0);
- if (vendor == 0xFFFF) continue;
-
- load_device(pcidev);
-
- uint8_t header_type = pci_rcfg_b(pcidev, 14);
-
- if (!(header_type & 0x80)) continue;
- for (int func = 1; func < 8; func++) {
- pcidev.function = func;
-
- uint16_t vendor = pci_rcfg_w(pcidev, 0);
- if (vendor == 0xFFFF) continue;
-
- load_device(pcidev);
- }
- }
- }
- kprintf("PCI DEVICES\n");
- for (size_t i = 0; i < pci_table_next; i++) {
- print_device(&pci_table[i]);
- }
- kprintf("\n");
-}
-
-bool pci_findby_class(struct pci_device *dest, uint8_t class, uint8_t subclass, size_t *offset) {
- size_t o = 0;
- if (offset == NULL) offset = &o;
- for (; *offset < pci_table_next; (*offset)++) {
- struct pci_table_entry *entry = &pci_table[*offset];
- if (entry->class == class && entry->subclass == subclass) {
- *dest = entry->device;
- return true;
- }
- }
- return false;
-}
-
-bool pci_findby_id(struct pci_device *dest, uint16_t device, uint16_t vendor, size_t *offset) {
- size_t o = 0;
- if (offset == NULL) offset = &o;
- for (; *offset < pci_table_next; (*offset)++) {
- struct pci_table_entry *entry = &pci_table[*offset];
- if (entry->device_id == device && entry->vendor_id == vendor) {
- *dest = entry->device;
- return true;
- }
- }
- return false;
-}
diff --git a/src/arch/amd64/drivers/pic.c b/src/arch/amd64/drivers/pic.c
deleted file mode 100644
index be7716f..0000000
--- a/src/arch/amd64/drivers/pic.c
+++ /dev/null
@@ -1,89 +0,0 @@
-#include "../bindings.h"
-#include "pic.h"
-
-#define PIC1 0x20 /* IO base address for master PIC */
-#define PIC2 0xA0 /* IO base address for slave PIC */
-#define PIC1_COMMAND PIC1
-#define PIC1_DATA (PIC1+1)
-#define PIC2_COMMAND PIC2
-#define PIC2_DATA (PIC2+1)
-
-#define PIC_EOI 0x20 /* End-of-interrupt command code */
-
-#define ICW1_ICW4 0x01 /* Indicates that ICW4 will be present */
-#define ICW1_SINGLE 0x02 /* Single (cascade) mode */
-#define ICW1_INTERVAL4 0x04 /* Call address interval 4 (8) */
-#define ICW1_LEVEL 0x08 /* Level triggered (edge) mode */
-#define ICW1_INIT 0x10 /* Initialization - required! */
-
-#define ICW4_8086 0x01 /* 8086/88 (MCS-80/85) mode */
-#define ICW4_AUTO 0x02 /* Auto (normal) EOI */
-#define ICW4_BUF_SLAVE 0x08 /* Buffered mode/slave */
-#define ICW4_BUF_MASTER 0x0C /* Buffered mode/master */
-#define ICW4_SFNM 0x10 /* Special fully nested (not) */
-
-void pic_remap(void) {
- uint8_t a1, a2;
-
- a1 = inb(PIC1_DATA); // save masks
- a2 = inb(PIC2_DATA);
-
- outb(PIC1_COMMAND, ICW1_INIT | ICW1_ICW4); // starts the initialization sequence (in cascade mode)
- io_wait();
- outb(PIC2_COMMAND, ICW1_INIT | ICW1_ICW4);
- io_wait();
- outb(PIC1_DATA, PIC_REMAP_OFFSET); // ICW2: Master PIC vector offset
- io_wait();
- outb(PIC2_DATA, PIC_REMAP_OFFSET + 8); // ICW2: Slave PIC vector offset
- io_wait();
- outb(PIC1_DATA, 4); // ICW3: tell Master PIC that there is a slave PIC at IRQ2 (0000 0100)
- io_wait();
- outb(PIC2_DATA, 2); // ICW3: tell Slave PIC its cascade identity (0000 0010)
- io_wait();
-
- outb(PIC1_DATA, ICW4_8086); // ICW4: have the PICs use 8086 mode (and not 8080 mode)
- io_wait();
- outb(PIC2_DATA, ICW4_8086);
- io_wait();
-
- outb(PIC1_DATA, a1); // restore saved masks.
- outb(PIC2_DATA, a2);
-}
-
-void pic_mask(int irq) {
- uint16_t port;
- uint8_t mask;
- if (irq < 8) {
- port = PIC1_DATA;
- } else {
- port = PIC2_DATA;
- irq -= 8;
- }
- mask = inb(port) | (1 << irq);
- outb(port, mask);
-}
-
-void pic_unmask(int irq) {
- uint16_t port;
- uint8_t mask;
- if (irq < 8) {
- port = PIC1_DATA;
- } else {
- irq -= 8;
- port = PIC2_DATA;
- }
- mask = inb(port) & ~(1 << irq);
- outb(port, mask);
-}
-
-void pic_disable(void) {
- outb(PIC1_DATA, 0xff);
- outb(PIC2_DATA, 0xff);
-}
-
-void pic_eoi(int irq) {
- if (irq >= 8) {
- outb(PIC2_COMMAND, PIC_EOI);
- }
- outb(PIC1_COMMAND, PIC_EOI);
-}
diff --git a/src/arch/amd64/drivers/pic.h b/src/arch/amd64/drivers/pic.h
deleted file mode 100644
index 2a4670e..0000000
--- a/src/arch/amd64/drivers/pic.h
+++ /dev/null
@@ -1,31 +0,0 @@
-#pragma once
-
-#define PIC_REMAP_OFFSET 0x20
-
-/**
- * Remaps the pie, i.e. initializes it
- */
-void pic_remap(void);
-
-/**
- * Masks an external irq to stop firing until un masked
- * @param irq - the irq to mask
- */
-void pic_mask(int irq);
-
-/**
- * Unmasks an external irq to allow interrupts to continue for that irq
- * @param irq - the irq to unmask
- */
-void pic_unmask(int irq);
-
-/**
- * Disabled the pick
- */
-void pic_disable(void);
-
-/**
- * Tells the pick that the interrupt has ended
- * @param irq - the irq that has ended
- */
-void pic_eoi(int irq);
diff --git a/src/arch/amd64/drivers/serial.c b/src/arch/amd64/drivers/serial.c
deleted file mode 100644
index b9e351e..0000000
--- a/src/arch/amd64/drivers/serial.c
+++ /dev/null
@@ -1,48 +0,0 @@
-#include <serial.h>
-
-#include "../bindings.h"
-
-#define PORT 0x3F8
-
-// initialize the specified COM port for serial
-// see https://wiki.osdev.org/Serial_Ports
-// and https://en.wikibooks.org/wiki/Serial_Programming/8250_UART_Programming
-int serial_init(void) {
- outb(PORT + 1, 0x00); // disable interrupts
- outb(PORT + 3, 0x80); // enable DLAB (divisor latch access bit)
- outb(PORT + 0, 0x03); // (lo) Set baud divisor to 3 38400 baud
- outb(PORT + 1, 0x00); // (hi)
- outb(PORT + 3, 0x03); // disable DLAB, set 8 bits per word, one stop bit, no parity
- outb(PORT + 2, 0xC7); // enable and clear FIFOs, set to maximum threshold
- // outb(port + 4, 0x0B); // TODO copied this from osdev wiki but i don't think you need it here
- outb(PORT + 4, 0x1E); // set in loopback mode for test
- outb(PORT + 0, 0xAE); // test by sending 0xAE
-
- uint8_t response = inb(PORT + 0);
- if (response != 0xAE) {
- // TODO panic here?
- return -1;
- }
-
- // disable loopback, enable IRQs
- outb(PORT + 4, 0x0F);
- return 0;
-}
-
-uint8_t serial_in(void) {
- // wait for data to be available
- while ((inb(PORT + 5) & 0x01) == 0);
- return inb(PORT);
-}
-
-void serial_out(uint8_t ch) {
- // wait for output to be free
- while ((inb(PORT + 5) & 0x20) == 0);
- outb(PORT, ch);
-}
-
-void serial_out_str(const char *str) {
- for (; *str != '\0'; str++) {
- serial_out(*str);
- }
-}
generated by cgit v1.2.3-freya (git 2.51.0) at 2025-09-22 18:13:16 +0000