Starting to rewrite HDA driver in C (#124)

Also: Disable Rust

.gitignore

@@ -9,6 +9,7 @@
 *.sea
 *.vhd
 *.tmp
+*.pcap
 .vscode/
 *.d
 /rust/target

Makefile

@@ -109,11 +109,11 @@ clean:
 	-rm -f rust/target -r
 
 # Линковка файлов
-$(KERNEL): $(KERNEL_NEED) $(RUST_SOURCES) rust/Cargo.toml
-	$(MAKE) build_rust
+$(KERNEL): $(KERNEL_NEED) # $(RUST_SOURCES) rust/Cargo.toml
+	# $(MAKE) build_rust
 	@echo -e '\x1b[32mLINK \x1b[0m' $(KERNEL)
 	@rm -f $(KERNEL)
-	@$(LD) $(LDFLAGS) -o $(KERNEL) $(KERNEL_NEED) $(RUST_OBJ_RELEASE)
+	@$(LD) $(LDFLAGS) -o $(KERNEL) $(KERNEL_NEED) # $(RUST_OBJ_RELEASE)
 	@#llvm-strip -s $(KERNEL)   # I know I strip all symbols so making unwind useless. (Fix it later)
 	@bash tools/genmap.sh
 	@bash tools/insertmap.sh

config.mk

@@ -198,6 +198,7 @@ SOURCES=\
 	kernel/src/sys/file_descriptors.c \
 	kernel/src/net/stack.c \
 	kernel/src/toys/pavi.c \
+	kernel/src/drv/audio/hda.c \
 	$(GAMEBOY) \
 	kernel/src/kernel.c \
 #	kernel/src/lib/duktape.c \

kernel/include/drv/audio/hda.h

@@ -0,0 +1,8 @@
+//
+// Created by ndraey on 21.01.24.
+//
+
+#pragma once
+
+void hda_init();
+void hda_reset();

kernel/include/drv/pci.h

@@ -81,4 +81,5 @@ void pci_print_list();
 void pci_write(uint8_t bus, uint8_t slot, uint8_t func, uint32_t offset, uint32_t value);
 void pci_find_device_by_class_and_subclass(uint16_t class, uint16_t subclass, uint16_t *vendor_ret, uint16_t *deviceid_ret,
 									  uint8_t *bus_ret, uint8_t *slot_ret, uint8_t *func_ret);
+void pci_enable_bus_mastering(uint8_t bus, uint8_t slot, uint8_t func);
 uint32_t pci_read32(uint8_t bus, uint8_t slot, uint8_t function, uint8_t offset);

kernel/include/sys/acpi.h

@@ -8,4 +8,5 @@ extern uint32_t system_processors_found;
 
 RSDPDescriptor* rsdp_find();
 void find_facp(size_t rsdt_addr);
-void find_apic(size_t rsdt_addr);
+void find_apic(size_t rsdt_addr);
+void acpi_scan_all_tables(uint32_t rsdt_addr);

kernel/src/drv/audio/hda.c

@@ -0,0 +1,67 @@
+//
+// Created by ndraey on 21.01.24.
+//
+
+#include "drv/pci.h"
+#include "drv/audio/hda.h"
+#include "io/ports.h"
+#include "io/tty.h"
+#include "mem/pmm.h"
+
+uint8_t hda_bus = 0,
+        hda_slot = 0,
+        hda_func = 0;
+
+uint16_t hda_vendor = 0,
+         hda_device = 0;
+
+uint32_t hda_addr = 0;
+
+#define WRITE32(reg, value) *(volatile uint32_t*)(hda_addr + (reg)) = (value)
+#define READ32(reg) (*(volatile uint32_t*)(hda_addr + (reg)))
+#define WRITE16(reg, value) *(volatile uint16_t*)(hda_addr + (reg)) = (value)
+#define READ16(reg) (*(volatile uint16_t*)(hda_addr + (reg)))
+#define WRITE8(reg, value) *(volatile uint8_t*)(hda_addr + (reg)) = (value)
+#define READ8(reg) (*(volatile uint8_t*)(hda_addr + (reg)))
+
+void hda_init() {
+    pci_find_device_by_class_and_subclass(4, 3, &hda_vendor, &hda_device, &hda_bus, &hda_slot, &hda_func);
+
+    if(hda_vendor && hda_device) {
+        qemu_ok("Found Intel HDA! (%x:%x)", hda_vendor, hda_device);
+    } else {
+        return;
+    }
+
+    hda_addr = pci_read32(hda_bus, hda_slot, hda_func, 0x10) & ~0x10;
+
+    qemu_ok("HDA address: %x", hda_addr);
+    tty_printf("HDA address: %x\n", hda_addr);
+
+    map_pages(
+            get_kernel_page_directory(),
+            hda_addr,
+            hda_addr,
+            PAGE_SIZE,
+            PAGE_WRITEABLE | PAGE_CACHE_DISABLE // PAGE_PRESENT is set automatically
+    );
+
+    hda_reset();
+
+    tty_printf("HDA RESET OKAY!\n");
+}
+
+void hda_reset() {
+    if(!hda_vendor)
+        return;
+
+    WRITE32(0x08, 0);
+
+    while((READ32(0x08) & 1) != 0);
+
+    WRITE32(0x8, 1);
+
+    while ((READ32(0x08) & 1) != 1);
+
+    qemu_ok("Reset ok!");
+}

kernel/src/drv/pci.c

@@ -416,6 +416,14 @@ void pci_find_device_by_class_and_subclass(uint16_t class, uint16_t subclass, ui
 	*bus_ret = *slot_ret = *func_ret = 0xFF;
 }
 
+void pci_enable_bus_mastering(uint8_t bus, uint8_t slot, uint8_t func) {
+    uint16_t command_register = pci_read_confspc_word(bus, slot, func, 4);
+
+    command_register |= 0x05;
+
+    pci_write(bus, slot, func, 4, command_register);
+}
+
 /**
  * @brief [PCI] Ищет все устройства и выводит на экран
  */

kernel/src/kernel.c

@@ -22,6 +22,7 @@
 
 #include "fs/natfs.h"
 #include "net/stack.h"
+#include "drv/audio/hda.h"
 
 #include <lib/pixel.h>
 
@@ -403,6 +404,8 @@ int kernel(multiboot_header_t* mboot, uint32_t initial_esp) {
 
     if (is_rsdp){
         RSDPDescriptor* rsdp = rsdp_find();
+		acpi_scan_all_tables(rsdp->RSDTaddress);
+
         find_facp(rsdp->RSDTaddress);
         find_apic(rsdp->RSDTaddress);
     }
@@ -519,8 +522,7 @@ int kernel(multiboot_header_t* mboot, uint32_t initial_esp) {
 
     // vio_ntw_init();
 
-    extern void intel_hda_init();
-    intel_hda_init();
+    hda_init();
 
     cli();
 

kernel/src/sys/acpi.c

@@ -67,6 +67,42 @@ ACPISDTHeader* find_table(uint32_t rsdt_addr, uint32_t sdt_count, char signature
     return 0;
 }
 
+void acpi_scan_all_tables(uint32_t rsdt_addr) {
+    ACPISDTHeader* rsdt = (ACPISDTHeader*)rsdt_addr;
+
+    map_pages(
+        get_kernel_page_directory(),
+        rsdt_addr,
+		rsdt_addr,
+        PAGE_SIZE,
+        PAGE_PRESENT
+    );
+
+
+    uint32_t sdt_count = (rsdt->Length - sizeof(ACPISDTHeader));
+
+    qemu_log("LEN: %d (// %d)", rsdt->Length, sizeof(ACPISDTHeader));
+
+    uint32_t* rsdt_end = (uint32_t*)(rsdt_addr + sizeof(ACPISDTHeader));
+
+    qemu_log("RSDT start: %x", rsdt_addr);
+    qemu_log("RSDT end: %x", rsdt_end);
+    qemu_log("RSDT size: %d", sizeof(ACPISDTHeader));
+
+    for(uint32_t i = 0; i < sdt_count; i++) {
+        ACPISDTHeader* entry = (ACPISDTHeader*)(rsdt_end[i]);
+
+        if(entry == 0) {
+            break;
+        }
+
+		qemu_log("[%x] Found table: %.4s", entry, entry->Signature);
+    }
+
+    unmap_single_page(get_kernel_page_directory(), (virtual_addr_t) rsdt_addr);
+}
+
+
 void find_facp(size_t rsdt_addr) {
 	qemu_log("FACP at P%x", rsdt_addr);
 
@@ -78,6 +114,7 @@ void find_facp(size_t rsdt_addr) {
         PAGE_PRESENT
     );
 
+
     ACPISDTHeader* rsdt = (ACPISDTHeader*)rsdt_addr;
 
 //	new_qemu_printf("OEM: %.11s\n", rsdt->OEMID);