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-rw-r--r--arch/sparc/include/asm/sbi.h116
1 files changed, 116 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/sbi.h b/arch/sparc/include/asm/sbi.h
new file mode 100644
index 000000000..4d6026c1e
--- /dev/null
+++ b/arch/sparc/include/asm/sbi.h
@@ -0,0 +1,116 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * sbi.h: SBI (Sbus Interface on sun4d) definitions
+ *
+ * Copyright (C) 1997 Jakub Jelinek <jj@sunsite.mff.cuni.cz>
+ */
+
+#ifndef _SPARC_SBI_H
+#define _SPARC_SBI_H
+
+#include <asm/obio.h>
+
+/* SBI */
+struct sbi_regs {
+/* 0x0000 */ u32 cid; /* Component ID */
+/* 0x0004 */ u32 ctl; /* Control */
+/* 0x0008 */ u32 status; /* Status */
+ u32 _unused1;
+
+/* 0x0010 */ u32 cfg0; /* Slot0 config reg */
+/* 0x0014 */ u32 cfg1; /* Slot1 config reg */
+/* 0x0018 */ u32 cfg2; /* Slot2 config reg */
+/* 0x001c */ u32 cfg3; /* Slot3 config reg */
+
+/* 0x0020 */ u32 stb0; /* Streaming buf control for slot 0 */
+/* 0x0024 */ u32 stb1; /* Streaming buf control for slot 1 */
+/* 0x0028 */ u32 stb2; /* Streaming buf control for slot 2 */
+/* 0x002c */ u32 stb3; /* Streaming buf control for slot 3 */
+
+/* 0x0030 */ u32 intr_state; /* Interrupt state */
+/* 0x0034 */ u32 intr_tid; /* Interrupt target ID */
+/* 0x0038 */ u32 intr_diag; /* Interrupt diagnostics */
+};
+
+#define SBI_CID 0x02800000
+#define SBI_CTL 0x02800004
+#define SBI_STATUS 0x02800008
+#define SBI_CFG0 0x02800010
+#define SBI_CFG1 0x02800014
+#define SBI_CFG2 0x02800018
+#define SBI_CFG3 0x0280001c
+#define SBI_STB0 0x02800020
+#define SBI_STB1 0x02800024
+#define SBI_STB2 0x02800028
+#define SBI_STB3 0x0280002c
+#define SBI_INTR_STATE 0x02800030
+#define SBI_INTR_TID 0x02800034
+#define SBI_INTR_DIAG 0x02800038
+
+/* Burst bits for 8, 16, 32, 64 are in cfgX registers at bits 2, 3, 4, 5 respectively */
+#define SBI_CFG_BURST_MASK 0x0000001e
+
+/* How to make devid from sbi no */
+#define SBI2DEVID(sbino) ((sbino<<4)|2)
+
+/* intr_state has 4 bits for slots 0 .. 3 and these bits are repeated for each sbus irq level
+ *
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * SBUS IRQ LEVEL | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Reser |
+ * SLOT # |3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0|3|2|1|0| ved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-------+
+ * Bits 31 27 23 19 15 11 7 3 0
+ */
+
+
+#ifndef __ASSEMBLY__
+
+static inline int acquire_sbi(int devid, int mask)
+{
+ __asm__ __volatile__ ("swapa [%2] %3, %0" :
+ "=r" (mask) :
+ "0" (mask),
+ "r" (ECSR_DEV_BASE(devid) | SBI_INTR_STATE),
+ "i" (ASI_M_CTL));
+ return mask;
+}
+
+static inline void release_sbi(int devid, int mask)
+{
+ __asm__ __volatile__ ("sta %0, [%1] %2" : :
+ "r" (mask),
+ "r" (ECSR_DEV_BASE(devid) | SBI_INTR_STATE),
+ "i" (ASI_M_CTL));
+}
+
+static inline void set_sbi_tid(int devid, int targetid)
+{
+ __asm__ __volatile__ ("sta %0, [%1] %2" : :
+ "r" (targetid),
+ "r" (ECSR_DEV_BASE(devid) | SBI_INTR_TID),
+ "i" (ASI_M_CTL));
+}
+
+static inline int get_sbi_ctl(int devid, int cfgno)
+{
+ int cfg;
+
+ __asm__ __volatile__ ("lda [%1] %2, %0" :
+ "=r" (cfg) :
+ "r" ((ECSR_DEV_BASE(devid) | SBI_CFG0) + (cfgno<<2)),
+ "i" (ASI_M_CTL));
+ return cfg;
+}
+
+static inline void set_sbi_ctl(int devid, int cfgno, int cfg)
+{
+ __asm__ __volatile__ ("sta %0, [%1] %2" : :
+ "r" (cfg),
+ "r" ((ECSR_DEV_BASE(devid) | SBI_CFG0) + (cfgno<<2)),
+ "i" (ASI_M_CTL));
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* !(_SPARC_SBI_H) */