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-rw-r--r--drivers/misc/ibmasm/lowlevel.h123
1 files changed, 123 insertions, 0 deletions
diff --git a/drivers/misc/ibmasm/lowlevel.h b/drivers/misc/ibmasm/lowlevel.h
new file mode 100644
index 0000000000..25f1ed07c3
--- /dev/null
+++ b/drivers/misc/ibmasm/lowlevel.h
@@ -0,0 +1,123 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * IBM ASM Service Processor Device Driver
+ *
+ * Copyright (C) IBM Corporation, 2004
+ *
+ * Author: Max Asböck <amax@us.ibm.com>
+ */
+
+/* Condor service processor specific hardware definitions */
+
+#ifndef __IBMASM_CONDOR_H__
+#define __IBMASM_CONDOR_H__
+
+#include <asm/io.h>
+
+#define VENDORID_IBM 0x1014
+#define DEVICEID_RSA 0x010F
+
+#define GET_MFA_ADDR(x) (x & 0xFFFFFF00)
+
+#define MAILBOX_FULL(x) (x & 0x00000001)
+
+#define NO_MFAS_AVAILABLE 0xFFFFFFFF
+
+
+#define INBOUND_QUEUE_PORT 0x40 /* contains address of next free MFA */
+#define OUTBOUND_QUEUE_PORT 0x44 /* contains address of posted MFA */
+
+#define SP_INTR_MASK 0x00000008
+#define UART_INTR_MASK 0x00000010
+
+#define INTR_STATUS_REGISTER 0x13A0
+#define INTR_CONTROL_REGISTER 0x13A4
+
+#define SCOUT_COM_A_BASE 0x0000
+#define SCOUT_COM_B_BASE 0x0100
+#define SCOUT_COM_C_BASE 0x0200
+#define SCOUT_COM_D_BASE 0x0300
+
+static inline int sp_interrupt_pending(void __iomem *base_address)
+{
+ return SP_INTR_MASK & readl(base_address + INTR_STATUS_REGISTER);
+}
+
+static inline int uart_interrupt_pending(void __iomem *base_address)
+{
+ return UART_INTR_MASK & readl(base_address + INTR_STATUS_REGISTER);
+}
+
+static inline void ibmasm_enable_interrupts(void __iomem *base_address, int mask)
+{
+ void __iomem *ctrl_reg = base_address + INTR_CONTROL_REGISTER;
+ writel( readl(ctrl_reg) & ~mask, ctrl_reg);
+}
+
+static inline void ibmasm_disable_interrupts(void __iomem *base_address, int mask)
+{
+ void __iomem *ctrl_reg = base_address + INTR_CONTROL_REGISTER;
+ writel( readl(ctrl_reg) | mask, ctrl_reg);
+}
+
+static inline void enable_sp_interrupts(void __iomem *base_address)
+{
+ ibmasm_enable_interrupts(base_address, SP_INTR_MASK);
+}
+
+static inline void disable_sp_interrupts(void __iomem *base_address)
+{
+ ibmasm_disable_interrupts(base_address, SP_INTR_MASK);
+}
+
+static inline void enable_uart_interrupts(void __iomem *base_address)
+{
+ ibmasm_enable_interrupts(base_address, UART_INTR_MASK);
+}
+
+static inline void disable_uart_interrupts(void __iomem *base_address)
+{
+ ibmasm_disable_interrupts(base_address, UART_INTR_MASK);
+}
+
+#define valid_mfa(mfa) ( (mfa) != NO_MFAS_AVAILABLE )
+
+static inline u32 get_mfa_outbound(void __iomem *base_address)
+{
+ int retry;
+ u32 mfa;
+
+ for (retry=0; retry<=10; retry++) {
+ mfa = readl(base_address + OUTBOUND_QUEUE_PORT);
+ if (valid_mfa(mfa))
+ break;
+ }
+ return mfa;
+}
+
+static inline void set_mfa_outbound(void __iomem *base_address, u32 mfa)
+{
+ writel(mfa, base_address + OUTBOUND_QUEUE_PORT);
+}
+
+static inline u32 get_mfa_inbound(void __iomem *base_address)
+{
+ u32 mfa = readl(base_address + INBOUND_QUEUE_PORT);
+
+ if (MAILBOX_FULL(mfa))
+ return 0;
+
+ return mfa;
+}
+
+static inline void set_mfa_inbound(void __iomem *base_address, u32 mfa)
+{
+ writel(mfa, base_address + INBOUND_QUEUE_PORT);
+}
+
+static inline struct i2o_message *get_i2o_message(void __iomem *base_address, u32 mfa)
+{
+ return (struct i2o_message *)(GET_MFA_ADDR(mfa) + base_address);
+}
+
+#endif /* __IBMASM_CONDOR_H__ */