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Diffstat (limited to 'arch/x86/include/asm/iosf_mbi.h')
-rw-r--r--arch/x86/include/asm/iosf_mbi.h55
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/x86/include/asm/iosf_mbi.h b/arch/x86/include/asm/iosf_mbi.h
index 8e71c7941767..57995f0596a6 100644
--- a/arch/x86/include/asm/iosf_mbi.h
+++ b/arch/x86/include/asm/iosf_mbi.h
@@ -50,6 +50,32 @@
#define BT_MBI_PCIE_READ 0x00
#define BT_MBI_PCIE_WRITE 0x01
+/* Quark available units */
+#define QRK_MBI_UNIT_HBA 0x00
+#define QRK_MBI_UNIT_HB 0x03
+#define QRK_MBI_UNIT_RMU 0x04
+#define QRK_MBI_UNIT_MM 0x05
+#define QRK_MBI_UNIT_MMESRAM 0x05
+#define QRK_MBI_UNIT_SOC 0x31
+
+/* Quark read/write opcodes */
+#define QRK_MBI_HBA_READ 0x10
+#define QRK_MBI_HBA_WRITE 0x11
+#define QRK_MBI_HB_READ 0x10
+#define QRK_MBI_HB_WRITE 0x11
+#define QRK_MBI_RMU_READ 0x10
+#define QRK_MBI_RMU_WRITE 0x11
+#define QRK_MBI_MM_READ 0x10
+#define QRK_MBI_MM_WRITE 0x11
+#define QRK_MBI_MMESRAM_READ 0x12
+#define QRK_MBI_MMESRAM_WRITE 0x13
+#define QRK_MBI_SOC_READ 0x06
+#define QRK_MBI_SOC_WRITE 0x07
+
+#if IS_ENABLED(CONFIG_IOSF_MBI)
+
+bool iosf_mbi_available(void);
+
/**
* iosf_mbi_read() - MailBox Interface read command
* @port: port indicating subunit being accessed
@@ -87,4 +113,33 @@ int iosf_mbi_write(u8 port, u8 opcode, u32 offset, u32 mdr);
*/
int iosf_mbi_modify(u8 port, u8 opcode, u32 offset, u32 mdr, u32 mask);
+#else /* CONFIG_IOSF_MBI is not enabled */
+static inline
+bool iosf_mbi_available(void)
+{
+ return false;
+}
+
+static inline
+int iosf_mbi_read(u8 port, u8 opcode, u32 offset, u32 *mdr)
+{
+ WARN(1, "IOSF_MBI driver not available");
+ return -EPERM;
+}
+
+static inline
+int iosf_mbi_write(u8 port, u8 opcode, u32 offset, u32 mdr)
+{
+ WARN(1, "IOSF_MBI driver not available");
+ return -EPERM;
+}
+
+static inline
+int iosf_mbi_modify(u8 port, u8 opcode, u32 offset, u32 mdr, u32 mask)
+{
+ WARN(1, "IOSF_MBI driver not available");
+ return -EPERM;
+}
+#endif /* CONFIG_IOSF_MBI */
+
#endif /* IOSF_MBI_SYMS_H */