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 */ 14 struct 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 */ 38 struct 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. */ 88 typedef 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 161 int cpm_command(u32 command, u8 opcode); 162 #else cpm_command(u32 command,u8 opcode)163 static inline int cpm_command(u32 command, u8 opcode) 164 { 165 return -ENOSYS; 166 } 167 #endif /* CONFIG_CPM */ 168 169 int cpm2_gpiochip_add32(struct device_node *np); 170 171 #endif 172