feat!: add new peri (IDE)

guest/ide/ide.h

 #ifndef _IDE_H_
 #define _IDE_H_
 
-#define SECTOR_SIZE 512
+#include <stdint.h>
 
-// Write a sector.
-// Implement a device driver for the true physical hardware.
-void ide_write_sector_phys(int sector_idx, void *data);
+// --- DEFINE ---
 
-#endif
+// ...
+
+// --- FUNCTION ---
+
+/**
+ * Read a sector from the first disk.
+ * @param first sector to read (0-indexed)
+ * @param dst address to store to read data
+ * Based on the assembly code at http://wiki.osdev.org/ATA_read/write_sectors
+ */
+void ide_phys_write_sector(uint32_t sector_idx, void *data);
+
+void ide_pv_write_sector(uint32_t sector_idx, void *data);
+
+#endif // _IDE_H_

guest/ide/ide_phys.c

-#include <stdint.h>
 #include "ide.h"
+
+#include "guest/pmio.h"
 #include "shared/ide_regs.h"
-#include "../pmio.h"
+#include <stdint.h>
+
+// --- DEFINE ---
 
-// IDE controler is programmed in PMIO.
+// ...
+
+// --- STATIC FUNCTION ---
 
 /**
  * Wait for the disk drive to be ready.
  */
 static void wait_drive() {
+
     while ((inb(IDE_STATUS_REG) & 0xC0) != 0x40);
 }
 
@@ -16,29 +22,31 @@ static void wait_drive() {
  * Prepare the disk drive for read/write at the specified sector in 28-bit LBA mode.
  * @param sector the sector to read or write
  */
-static void pio_prepare(int sector) {
+static void pio_prepare(uint32_t sector) {
+
     wait_drive();
-    outb(IDE_DATA_BASE_REG+2, 1);  // sector count
-    outb(IDE_DATA_BASE_REG+3, sector & 0xff);  // send bits 0-7 of LBA
-    outb(IDE_DATA_BASE_REG+4, (sector >> 8) & 0xff);  // send bits 8-15 of LBA
-    outb(IDE_DATA_BASE_REG+5, (sector >> 16) & 0xff);  // send bits 16-23 of LBA
+
+    outb(IDE_DATA_BASE_REG+2, 1);                               // sector count
+    outb(IDE_DATA_BASE_REG+3, sector & 0xff);                   // send bits 0-7 of LBA
+    outb(IDE_DATA_BASE_REG+4, (sector >> 8) & 0xff);            // send bits 8-15 of LBA
+    outb(IDE_DATA_BASE_REG+5, (sector >> 16) & 0xff);           // send bits 16-23 of LBA
     outb(IDE_DATA_BASE_REG+6, ((sector >> 24) & 0x0f) | 0xe0);  // send bits 24-27 of LBA + set LBA mode; 0xe0 = 11100000b;
 }
 
-/**
- * Read a sector from the first disk.
- * @param first sector to read (0-indexed)
- * @param dst address to store to read data
- * Based on the assembly code at http://wiki.osdev.org/ATA_read/write_sectors
- */
-void ide_write_sector_phys(int sector, void *data) {
+// --- FUNCTION ---
+
+void ide_phys_write_sector(uint32_t sector, void *data) {
+
     pio_prepare(sector);
+
     outb(IDE_CMD_REG, 0x30);  // command port: write with retry
     wait_drive();
 
     uint16_t *d = (uint16_t *)data;
-    for (int i = 0; i < SECTOR_SIZE/2; i++) {
+    for (int i = 0; i < MAX_LOOP_IDE_DATA; i++) {
+
         outw(IDE_DATA_BASE_REG, *d);
         d++;
     }
 }
+

guest/ide/ide_pv.c

+#include "ide.h"
+
+#include "guest/pmio.h"
+#include "guest/utils.h"
+#include "shared/hypercall_params.h"
+
+// --- DEFINE ---
+
+// ...
+
+// --- FUNCTION ---
+
+void ide_pv_write_sector(uint32_t sector_idx, void *data) {
+
+    hyper_ide_params_t param_ide;
+    param_ide.sector_idx = sector_idx;
+    param_ide.data = (uint64_t)data;
+    memcpy((void *)HYPERCALL_SHARED_ADDR, (void *)&param_ide, sizeof(param_ide));
+
+    outb(HYPERCALL_PMIO_ADDR, HYPERCALL_CODE_IDE);
+}
+

shared/ide_regs.h

 #ifndef _IDE_REGS_H_
 #define _IDE_REGS_H_
 
-// Status register on the primary bus (read-only)
-#define IDE_STATUS_REG     0x1F7
+#define IDE_STATUS_REG     0x1F7  // Status register on the primary bus (read-only)
+#define IDE_CMD_REG        0x1F7  // Command register on the primary bus (write-only)
+#define IDE_DATA_BASE_REG  0x1F0  // Base port on primary bus (write-only)
 
-// Command register on the primary bus (write-only)
-#define IDE_CMD_REG        0x1F7
-
-// Base port on primary bus (write-only)
-#define IDE_DATA_BASE_REG  0x1F0
+#define SECTOR_SIZE         512
+#define MAX_SECTOR_NUM      ((1UL << 28) - 1)
+#define MAX_LOOP_IDE_DATA   (SECTOR_SIZE / 2)
 
 #endif