xref: /openbmc/linux/arch/sparc/include/asm/sunbpp.h (revision b2441318)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * include/asm/sunbpp.h
4  */
5 
6 #ifndef _ASM_SPARC_SUNBPP_H
7 #define _ASM_SPARC_SUNBPP_H
8 
9 struct bpp_regs {
10   /* DMA registers */
11   __volatile__ __u32 p_csr;		/* DMA Control/Status Register */
12   __volatile__ __u32 p_addr;		/* Address Register */
13   __volatile__ __u32 p_bcnt;		/* Byte Count Register */
14   __volatile__ __u32 p_tst_csr;		/* Test Control/Status (DMA2 only) */
15   /* Parallel Port registers */
16   __volatile__ __u16 p_hcr;		/* Hardware Configuration Register */
17   __volatile__ __u16 p_ocr;		/* Operation Configuration Register */
18   __volatile__ __u8 p_dr;		/* Parallel Data Register */
19   __volatile__ __u8 p_tcr;		/* Transfer Control Register */
20   __volatile__ __u8 p_or;		/* Output Register */
21   __volatile__ __u8 p_ir;		/* Input Register */
22   __volatile__ __u16 p_icr;		/* Interrupt Control Register */
23 };
24 
25 /* P_HCR. Time is in increments of SBus clock. */
26 #define P_HCR_TEST      0x8000      /* Allows buried counters to be read */
27 #define P_HCR_DSW       0x7f00      /* Data strobe width (in ticks) */
28 #define P_HCR_DDS       0x007f      /* Data setup before strobe (in ticks) */
29 
30 /* P_OCR. */
31 #define P_OCR_MEM_CLR   0x8000
32 #define P_OCR_DATA_SRC  0x4000      /* )                  */
33 #define P_OCR_DS_DSEL   0x2000      /* )  Bidirectional      */
34 #define P_OCR_BUSY_DSEL 0x1000      /* )    selects            */
35 #define P_OCR_ACK_DSEL  0x0800      /* )                  */
36 #define P_OCR_EN_DIAG   0x0400
37 #define P_OCR_BUSY_OP   0x0200      /* Busy operation */
38 #define P_OCR_ACK_OP    0x0100      /* Ack operation */
39 #define P_OCR_SRST      0x0080      /* Reset state machines. Not selfcleaning. */
40 #define P_OCR_IDLE      0x0008      /* PP data transfer state machine is idle */
41 #define P_OCR_V_ILCK    0x0002      /* Versatec faded. Zebra only. */
42 #define P_OCR_EN_VER    0x0001      /* Enable Versatec (0 - enable). Zebra only. */
43 
44 /* P_TCR */
45 #define P_TCR_DIR       0x08
46 #define P_TCR_BUSY      0x04
47 #define P_TCR_ACK       0x02
48 #define P_TCR_DS        0x01        /* Strobe */
49 
50 /* P_OR */
51 #define P_OR_V3         0x20        /* )                 */
52 #define P_OR_V2         0x10        /* ) on Zebra only   */
53 #define P_OR_V1         0x08        /* )                 */
54 #define P_OR_INIT       0x04
55 #define P_OR_AFXN       0x02        /* Auto Feed */
56 #define P_OR_SLCT_IN    0x01
57 
58 /* P_IR */
59 #define P_IR_PE         0x04
60 #define P_IR_SLCT       0x02
61 #define P_IR_ERR        0x01
62 
63 /* P_ICR */
64 #define P_DS_IRQ        0x8000      /* RW1  */
65 #define P_ACK_IRQ       0x4000      /* RW1  */
66 #define P_BUSY_IRQ      0x2000      /* RW1  */
67 #define P_PE_IRQ        0x1000      /* RW1  */
68 #define P_SLCT_IRQ      0x0800      /* RW1  */
69 #define P_ERR_IRQ       0x0400      /* RW1  */
70 #define P_DS_IRQ_EN     0x0200      /* RW   Always on rising edge */
71 #define P_ACK_IRQ_EN    0x0100      /* RW   Always on rising edge */
72 #define P_BUSY_IRP      0x0080      /* RW   1= rising edge */
73 #define P_BUSY_IRQ_EN   0x0040      /* RW   */
74 #define P_PE_IRP        0x0020      /* RW   1= rising edge */
75 #define P_PE_IRQ_EN     0x0010      /* RW   */
76 #define P_SLCT_IRP      0x0008      /* RW   1= rising edge */
77 #define P_SLCT_IRQ_EN   0x0004      /* RW   */
78 #define P_ERR_IRP       0x0002      /* RW1  1= rising edge */
79 #define P_ERR_IRQ_EN    0x0001      /* RW   */
80 
81 #endif /* !(_ASM_SPARC_SUNBPP_H) */
82