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Diffstat (limited to 'sys/include/dev/ic/nvmevar.h')
-rw-r--r--sys/include/dev/ic/nvmevar.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/sys/include/dev/ic/nvmevar.h b/sys/include/dev/ic/nvmevar.h
index 52fa5ad..4a40071 100644
--- a/sys/include/dev/ic/nvmevar.h
+++ b/sys/include/dev/ic/nvmevar.h
@@ -41,6 +41,23 @@
#define NVME_OP_WRITE 0x01
#define NVME_OP_READ 0x02
+/* Controller Capabilities */
+#define CAP_MPSMIN(caps) ((caps >> 48) & 0xF)
+#define CAP_MPSMAX(caps) ((caps >> 52) & 0xF)
+#define CAP_TIMEOUT(caps) ((caps >> 24) & 0xFF)
+#define CAP_STRIDE(caps) ((caps >> 32) & 0xF)
+#define CAP_MQES(caps) (caps & 0xFFFF)
+#define CAP_CSS(caps) (caps & 0xFF)
+
+/* Controller Configuration */
+#define CONFIG_EN __BIT(0)
+#define CONFIG_CSS_SHIFT 4
+#define CONFIG_IOSQES_SHIFT 16
+#define CONFIG_IOCQES_SHIFT 20
+
+#define COMMAND_SIZE 64 /* In bytes (defined by spec) */
+#define STATUS_READY(status) (status & 1)
+
struct nvme_common_cmd {
uint8_t opcode;
uint8_t flags;