patch-2.1.79 linux/include/asm-sparc/sbi.h

• Lines: 108
• Date: Mon Jan 12 15:15:54 1998
• Orig file: v2.1.78/linux/include/asm-sparc/sbi.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.78/linux/include/asm-sparc/sbi.h linux/include/asm-sparc/sbi.h
@@ -0,0 +1,107 @@
+/* $Id: sbi.h,v 1.1 1997/11/19 15:12:16 jj Exp $
+ * 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__
+
+extern __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;
+}
+
+extern __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));
+}
+
+extern __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;
+}
+
+extern __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) */