refactor: abstract out the code for prdte creation (by imposing a constrain on buffer...

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

diff --git a/lunaix-os/hal/ahci/utils.c b/lunaix-os/hal/ahci/utils.c
index 3b1fbcb5f27fb83fa7d5106cedb7d5f9db36c80e..e101efdd42d300c11f504bb5f7beff4f6de70abc 100644 (file)
--- a/lunaix-os/hal/ahci/utils.c
+++ b/lunaix-os/hal/ahci/utils.c
@@ -9,6 +9,9 @@
 #define IDDEV_OFFSERIALNUM 10
 #define IDDEV_OFFMODELNUM 27
 #define IDDEV_OFFADDSUPPORT 69
+#define IDDEV_OFFALIGN 209
+#define IDDEV_OFFLPP 106
+#define IDDEV_OFFCAPABILITIES 49
 
 void
 ahci_parse_dev_info(struct hba_device* dev_info, uint16_t* data)
@@ -17,6 +20,9 @@ ahci_parse_dev_info(struct hba_device* dev_info, uint16_t* data)
     dev_info->block_size = *((uint32_t*)(data + IDDEV_OFFLSECSIZE));
     dev_info->cbd_size = (*data & 0x3) ? 16 : 12;
     dev_info->wwn = *(uint64_t*)(data + IDDEV_OFFWWN);
+    dev_info->block_per_sec = 1 << (*(data + IDDEV_OFFLPP) & 0xf);
+    dev_info->alignment_offset = *(data + IDDEV_OFFALIGN) & 0x3fff;
+    dev_info->capabilities = *((uint32_t*)(data + IDDEV_OFFCAPABILITIES));
 
     if (!dev_info->block_size) {
         dev_info->block_size = 512;