1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */ 2 /* 3 * Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc. 4 * Copyright (c) 2014, I2SE GmbH 5 */ 6 7 /* Qualcomm Atheros SPI register definition. 8 * 9 * This module is designed to define the Qualcomm Atheros SPI register 10 * placeholders; 11 */ 12 13 #ifndef _QCA_SPI_H 14 #define _QCA_SPI_H 15 16 #include <linux/netdevice.h> 17 #include <linux/sched.h> 18 #include <linux/skbuff.h> 19 #include <linux/spi/spi.h> 20 #include <linux/types.h> 21 22 #include "qca_7k_common.h" 23 24 #define QCASPI_DRV_VERSION "0.2.7-i" 25 #define QCASPI_DRV_NAME "qcaspi" 26 27 #define QCASPI_GOOD_SIGNATURE 0xAA55 28 29 #define QCASPI_TX_RING_MAX_LEN 10 30 #define QCASPI_TX_RING_MIN_LEN 2 31 #define QCASPI_RX_MAX_FRAMES 4 32 33 /* sync related constants */ 34 #define QCASPI_SYNC_UNKNOWN 0 35 #define QCASPI_SYNC_RESET 1 36 #define QCASPI_SYNC_READY 2 37 38 #define QCASPI_RESET_TIMEOUT 10 39 40 /* sync events */ 41 #define QCASPI_EVENT_UPDATE 0 42 #define QCASPI_EVENT_CPUON 1 43 44 struct tx_ring { 45 struct sk_buff *skb[QCASPI_TX_RING_MAX_LEN]; 46 u16 head; 47 u16 tail; 48 u16 size; 49 u16 count; 50 }; 51 52 struct qcaspi_stats { 53 u64 trig_reset; 54 u64 device_reset; 55 u64 reset_timeout; 56 u64 read_err; 57 u64 write_err; 58 u64 read_buf_err; 59 u64 write_buf_err; 60 u64 out_of_mem; 61 u64 write_buf_miss; 62 u64 ring_full; 63 u64 spi_err; 64 u64 write_verify_failed; 65 u64 buf_avail_err; 66 u64 bad_signature; 67 }; 68 69 struct qcaspi { 70 struct net_device *net_dev; 71 struct spi_device *spi_dev; 72 struct task_struct *spi_thread; 73 74 struct tx_ring txr; 75 struct qcaspi_stats stats; 76 77 u8 *rx_buffer; 78 u32 buffer_size; 79 u8 sync; 80 81 struct qcafrm_handle frm_handle; 82 struct sk_buff *rx_skb; 83 84 unsigned long flags; 85 u16 reset_count; 86 87 #ifdef CONFIG_DEBUG_FS 88 struct dentry *device_root; 89 #endif 90 91 /* user configurable options */ 92 u8 legacy_mode; 93 u16 burst_len; 94 }; 95 96 #endif /* _QCA_SPI_H */ 97