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-rw-r--r--arch/mips/include/asm/sgi/pi1.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/mips/include/asm/sgi/pi1.h b/arch/mips/include/asm/sgi/pi1.h
new file mode 100644
index 0000000000..88b814ef3f
--- /dev/null
+++ b/arch/mips/include/asm/sgi/pi1.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * pi1.h: Definitions for SGI PI1 parallel port
+ */
+
+#ifndef _SGI_PI1_H
+#define _SGI_PI1_H
+
+struct pi1_regs {
+ u8 _data[3];
+ volatile u8 data;
+ u8 _ctrl[3];
+ volatile u8 ctrl;
+#define PI1_CTRL_STROBE_N 0x01
+#define PI1_CTRL_AFD_N 0x02
+#define PI1_CTRL_INIT_N 0x04
+#define PI1_CTRL_SLIN_N 0x08
+#define PI1_CTRL_IRQ_ENA 0x10
+#define PI1_CTRL_DIR 0x20
+#define PI1_CTRL_SEL 0x40
+ u8 _status[3];
+ volatile u8 status;
+#define PI1_STAT_DEVID 0x03 /* bits 0-1 */
+#define PI1_STAT_NOINK 0x04 /* SGI MODE only */
+#define PI1_STAT_ERROR 0x08
+#define PI1_STAT_ONLINE 0x10
+#define PI1_STAT_PE 0x20
+#define PI1_STAT_ACK 0x40
+#define PI1_STAT_BUSY 0x80
+ u8 _dmactrl[3];
+ volatile u8 dmactrl;
+#define PI1_DMACTRL_FIFO_EMPTY 0x01 /* fifo empty R/O */
+#define PI1_DMACTRL_ABORT 0x02 /* reset DMA and internal fifo W/O */
+#define PI1_DMACTRL_STDMODE 0x00 /* bits 2-3 */
+#define PI1_DMACTRL_SGIMODE 0x04 /* bits 2-3 */
+#define PI1_DMACTRL_RICOHMODE 0x08 /* bits 2-3 */
+#define PI1_DMACTRL_HPMODE 0x0c /* bits 2-3 */
+#define PI1_DMACTRL_BLKMODE 0x10 /* block mode */
+#define PI1_DMACTRL_FIFO_CLEAR 0x20 /* clear fifo W/O */
+#define PI1_DMACTRL_READ 0x40 /* read */
+#define PI1_DMACTRL_RUN 0x80 /* pedal to the metal */
+ u8 _intstat[3];
+ volatile u8 intstat;
+#define PI1_INTSTAT_ACK 0x04
+#define PI1_INTSTAT_FEMPTY 0x08
+#define PI1_INTSTAT_NOINK 0x10
+#define PI1_INTSTAT_ONLINE 0x20
+#define PI1_INTSTAT_ERR 0x40
+#define PI1_INTSTAT_PE 0x80
+ u8 _intmask[3];
+ volatile u8 intmask; /* enabled low, reset high*/
+#define PI1_INTMASK_ACK 0x04
+#define PI1_INTMASK_FIFO_EMPTY 0x08
+#define PI1_INTMASK_NOINK 0x10
+#define PI1_INTMASK_ONLINE 0x20
+#define PI1_INTMASK_ERR 0x40
+#define PI1_INTMASK_PE 0x80
+ u8 _timer1[3];
+ volatile u8 timer1;
+#define PI1_TIME1 0x27
+ u8 _timer2[3];
+ volatile u8 timer2;
+#define PI1_TIME2 0x13
+ u8 _timer3[3];
+ volatile u8 timer3;
+#define PI1_TIME3 0x10
+ u8 _timer4[3];
+ volatile u8 timer4;
+#define PI1_TIME4 0x00
+};
+
+#endif