refactor: add a simple ramfs for rootfs. Twifs should have more specific job in future.

[lunaix-os.git] / lunaix-os / hal / ahci / atapi.c

diff --git a/lunaix-os/hal/ahci/atapi.c b/lunaix-os/hal/ahci/atapi.c
index 0ef5099404b3bfa5a0f5a1211858743620662835..f75c1bec6cb59ed463907c8c1a104d2e2c2ba946 100644 (file)
--- a/lunaix-os/hal/ahci/atapi.c
+++ b/lunaix-os/hal/ahci/atapi.c
@@ -1,7 +1,7 @@
+#include <hal/ahci/ahci.h>
 #include <hal/ahci/hba.h>
 #include <hal/ahci/sata.h>
 #include <hal/ahci/scsi.h>
-#include <hal/ahci/utils.h>
 
 #include <klibc/string.h>
 #include <lunaix/mm/valloc.h>
@@ -37,11 +37,18 @@ scsi_create_packet16(struct scsi_cdb16* cdb,
 void
 scsi_parse_capacity(struct hba_device* device, uint32_t* parameter)
 {
-    device->max_lba = SCSI_FLIP(*(parameter + 1));
-    device->block_size = SCSI_FLIP(*(parameter + 2));
+    if (device->cbd_size == SCSI_CDB16) {
+        device->max_lba =
+          SCSI_FLIP(*(parameter + 1)) | (SCSI_FLIP(*parameter) << 32);
+        device->block_size = SCSI_FLIP(*(parameter + 2));
+    } else {
+        // for READ_CAPACITY(10)
+        device->max_lba = SCSI_FLIP(*(parameter));
+        device->block_size = SCSI_FLIP(*(parameter + 1));
+    }
 }
 
-void
+int
 __scsi_buffer_io(struct hba_device* dev,
                  uint64_t lba,
                  void* buffer,
@@ -54,23 +61,17 @@ __scsi_buffer_io(struct hba_device* dev,
     struct hba_cmdh* header;
     struct hba_cmdt* table;
     int slot = hba_prepare_cmd(port, &table, &header, buffer, size);
-    int bitmask = 1 << slot;
-
-    // 确保端口是空闲的
-    wait_until(!(port->regs[HBA_RPxTFD] & (HBA_PxTFD_BSY | HBA_PxTFD_DRQ)));
-
-    port->regs[HBA_RPxIS] = 0;
 
     header->options |= (HBA_CMDH_WRITE * (write == 1)) | HBA_CMDH_ATAPI;
 
     uint32_t count = ICEIL(size, port->device->block_size);
 
-    struct sata_reg_fis* fis = table->command_fis;
+    struct sata_reg_fis* fis = (struct sata_reg_fis*)table->command_fis;
     void* cdb = table->atapi_cmd;
     sata_create_fis(fis, ATA_PACKET, (size << 8), 0);
     fis->feature = 1 | ((!write) << 2);
 
-    if (port->device->cbd_size == 16) {
+    if (port->device->cbd_size == SCSI_CDB16) {
         scsi_create_packet16((struct scsi_cdb16*)cdb,
                              write ? SCSI_WRITE_BLOCKS_16 : SCSI_READ_BLOCKS_16,
                              lba,
@@ -85,42 +86,26 @@ __scsi_buffer_io(struct hba_device* dev,
     // field: cdb->misc1
     *((uint8_t*)cdb + 1) = 3 << 5; // RPROTECT=011b 禁用保护检查
 
-    int retries = 0;
-
-    while (retries < MAX_RETRY) {
-        port->regs[HBA_RPxCI] = bitmask;
-
-        wait_until(!(port->regs[HBA_RPxCI] & bitmask));
-
-        if ((port->regs[HBA_RPxTFD] & HBA_PxTFD_ERR)) {
-            // 有错误
-            sata_read_error(port);
-            retries++;
-        } else {
-            vfree_dma(table);
-            return 1;
-        }
-    }
-
-fail:
+    int is_ok = ahci_try_send(port, slot);
     vfree_dma(table);
-    return 0;
+
+    return is_ok;
 }
 
-void
+int
 scsi_read_buffer(struct hba_device* dev,
                  uint64_t lba,
                  void* buffer,
                  uint32_t size)
 {
-    __scsi_buffer_io(dev, lba, buffer, size, 0);
+    return __scsi_buffer_io(dev, lba, buffer, size, 0);
 }
 
-void
+int
 scsi_write_buffer(struct hba_device* dev,
                   uint64_t lba,
                   void* buffer,
                   uint32_t size)
 {
-    __scsi_buffer_io(dev, lba, buffer, size, 1);
+    return __scsi_buffer_io(dev, lba, buffer, size, 1);
 }
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