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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __CPM_H
3#define __CPM_H
4
5#include <linux/compiler.h>
6#include <linux/types.h>
7#include <linux/errno.h>
8#include <linux/of.h>
9#include <soc/fsl/qe/qe.h>
10
11/*
12 * SPI Parameter RAM common to QE and CPM.
13 */
14struct spi_pram {
15 __be16 rbase; /* Rx Buffer descriptor base address */
16 __be16 tbase; /* Tx Buffer descriptor base address */
17 u8 rfcr; /* Rx function code */
18 u8 tfcr; /* Tx function code */
19 __be16 mrblr; /* Max receive buffer length */
20 __be32 rstate; /* Internal */
21 __be32 rdp; /* Internal */
22 __be16 rbptr; /* Internal */
23 __be16 rbc; /* Internal */
24 __be32 rxtmp; /* Internal */
25 __be32 tstate; /* Internal */
26 __be32 tdp; /* Internal */
27 __be16 tbptr; /* Internal */
28 __be16 tbc; /* Internal */
29 __be32 txtmp; /* Internal */
30 __be32 res; /* Tx temp. */
31 __be16 rpbase; /* Relocation pointer (CPM1 only) */
32 __be16 res1; /* Reserved */
33};
34
35/*
36 * USB Controller pram common to QE and CPM.
37 */
38struct usb_ctlr {
39 u8 usb_usmod;
40 u8 usb_usadr;
41 u8 usb_uscom;
42 u8 res1[1];
43 __be16 usb_usep[4];
44 u8 res2[4];
45 __be16 usb_usber;
46 u8 res3[2];
47 __be16 usb_usbmr;
48 u8 res4[1];
49 u8 usb_usbs;
50 /* Fields down below are QE-only */
51 __be16 usb_ussft;
52 u8 res5[2];
53 __be16 usb_usfrn;
54 u8 res6[0x22];
55} __attribute__ ((packed));
56
57/*
58 * Function code bits, usually generic to devices.
59 */
60#ifdef CONFIG_CPM1
61#define CPMFCR_GBL ((u_char)0x00) /* Flag doesn't exist in CPM1 */
62#define CPMFCR_TC2 ((u_char)0x00) /* Flag doesn't exist in CPM1 */
63#define CPMFCR_DTB ((u_char)0x00) /* Flag doesn't exist in CPM1 */
64#define CPMFCR_BDB ((u_char)0x00) /* Flag doesn't exist in CPM1 */
65#else
66#define CPMFCR_GBL ((u_char)0x20) /* Set memory snooping */
67#define CPMFCR_TC2 ((u_char)0x04) /* Transfer code 2 value */
68#define CPMFCR_DTB ((u_char)0x02) /* Use local bus for data when set */
69#define CPMFCR_BDB ((u_char)0x01) /* Use local bus for BD when set */
70#endif
71#define CPMFCR_EB ((u_char)0x10) /* Set big endian byte order */
72
73/* Opcodes common to CPM1 and CPM2
74*/
75#define CPM_CR_INIT_TRX ((ushort)0x0000)
76#define CPM_CR_INIT_RX ((ushort)0x0001)
77#define CPM_CR_INIT_TX ((ushort)0x0002)
78#define CPM_CR_HUNT_MODE ((ushort)0x0003)
79#define CPM_CR_STOP_TX ((ushort)0x0004)
80#define CPM_CR_GRA_STOP_TX ((ushort)0x0005)
81#define CPM_CR_RESTART_TX ((ushort)0x0006)
82#define CPM_CR_CLOSE_RX_BD ((ushort)0x0007)
83#define CPM_CR_SET_GADDR ((ushort)0x0008)
84#define CPM_CR_SET_TIMER ((ushort)0x0008)
85#define CPM_CR_STOP_IDMA ((ushort)0x000b)
86
87/* Buffer descriptors used by many of the CPM protocols. */
88typedef struct cpm_buf_desc {
89 ushort cbd_sc; /* Status and Control */
90 ushort cbd_datlen; /* Data length in buffer */
91 uint cbd_bufaddr; /* Buffer address in host memory */
92} cbd_t;
93
94/* Buffer descriptor control/status used by serial
95 */
96
97#define BD_SC_EMPTY (0x8000) /* Receive is empty */
98#define BD_SC_READY (0x8000) /* Transmit is ready */
99#define BD_SC_WRAP (0x2000) /* Last buffer descriptor */
100#define BD_SC_INTRPT (0x1000) /* Interrupt on change */
101#define BD_SC_LAST (0x0800) /* Last buffer in frame */
102#define BD_SC_TC (0x0400) /* Transmit CRC */
103#define BD_SC_CM (0x0200) /* Continuous mode */
104#define BD_SC_ID (0x0100) /* Rec'd too many idles */
105#define BD_SC_P (0x0100) /* xmt preamble */
106#define BD_SC_BR (0x0020) /* Break received */
107#define BD_SC_FR (0x0010) /* Framing error */
108#define BD_SC_PR (0x0008) /* Parity error */
109#define BD_SC_NAK (0x0004) /* NAK - did not respond */
110#define BD_SC_OV (0x0002) /* Overrun */
111#define BD_SC_UN (0x0002) /* Underrun */
112#define BD_SC_CD (0x0001) /* */
113#define BD_SC_CL (0x0001) /* Collision */
114
115/* Buffer descriptor control/status used by Ethernet receive.
116 * Common to SCC and FCC.
117 */
118#define BD_ENET_RX_EMPTY (0x8000)
119#define BD_ENET_RX_WRAP (0x2000)
120#define BD_ENET_RX_INTR (0x1000)
121#define BD_ENET_RX_LAST (0x0800)
122#define BD_ENET_RX_FIRST (0x0400)
123#define BD_ENET_RX_MISS (0x0100)
124#define BD_ENET_RX_BC (0x0080) /* FCC Only */
125#define BD_ENET_RX_MC (0x0040) /* FCC Only */
126#define BD_ENET_RX_LG (0x0020)
127#define BD_ENET_RX_NO (0x0010)
128#define BD_ENET_RX_SH (0x0008)
129#define BD_ENET_RX_CR (0x0004)
130#define BD_ENET_RX_OV (0x0002)
131#define BD_ENET_RX_CL (0x0001)
132#define BD_ENET_RX_STATS (0x01ff) /* All status bits */
133
134/* Buffer descriptor control/status used by Ethernet transmit.
135 * Common to SCC and FCC.
136 */
137#define BD_ENET_TX_READY (0x8000)
138#define BD_ENET_TX_PAD (0x4000)
139#define BD_ENET_TX_WRAP (0x2000)
140#define BD_ENET_TX_INTR (0x1000)
141#define BD_ENET_TX_LAST (0x0800)
142#define BD_ENET_TX_TC (0x0400)
143#define BD_ENET_TX_DEF (0x0200)
144#define BD_ENET_TX_HB (0x0100)
145#define BD_ENET_TX_LC (0x0080)
146#define BD_ENET_TX_RL (0x0040)
147#define BD_ENET_TX_RCMASK (0x003c)
148#define BD_ENET_TX_UN (0x0002)
149#define BD_ENET_TX_CSL (0x0001)
150#define BD_ENET_TX_STATS (0x03ff) /* All status bits */
151
152/* Buffer descriptor control/status used by Transparent mode SCC.
153 */
154#define BD_SCC_TX_LAST (0x0800)
155
156/* Buffer descriptor control/status used by I2C.
157 */
158#define BD_I2C_START (0x0400)
159
160#ifdef CONFIG_CPM
161int cpm_command(u32 command, u8 opcode);
162#else
163static inline int cpm_command(u32 command, u8 opcode)
164{
165 return -ENOSYS;
166}
167#endif /* CONFIG_CPM */
168
169int cpm2_gpiochip_add32(struct device *dev);
170
171#endif