1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2019 - 2022 Beijing WangXun Technology Co., Ltd. */
3
4#include <linux/etherdevice.h>
5#include <linux/iopoll.h>
6#include <linux/pci.h>
7
8#include "../libwx/wx_type.h"
9#include "../libwx/wx_hw.h"
10#include "ngbe_type.h"
11#include "ngbe_hw.h"
12
13int ngbe_eeprom_chksum_hostif(struct wx *wx)
14{
15	struct wx_hic_read_shadow_ram buffer;
16	int status;
17	int tmp;
18
19	buffer.hdr.req.cmd = NGBE_FW_EEPROM_CHECKSUM_CMD;
20	buffer.hdr.req.buf_lenh = 0;
21	buffer.hdr.req.buf_lenl = 0;
22	buffer.hdr.req.checksum = NGBE_FW_CMD_DEFAULT_CHECKSUM;
23	/* convert offset from words to bytes */
24	buffer.address = 0;
25	/* one word */
26	buffer.length = 0;
27
28	status = wx_host_interface_command(wx, (u32 *)&buffer, sizeof(buffer),
29					   WX_HI_COMMAND_TIMEOUT, false);
30
31	if (status < 0)
32		return status;
33	tmp = rd32a(wx, WX_MNG_MBOX, 1);
34	if (tmp == NGBE_FW_CMD_ST_PASS)
35		return 0;
36	return -EIO;
37}
38
39static int ngbe_reset_misc(struct wx *wx)
40{
41	wx_reset_misc(wx);
42	if (wx->gpio_ctrl) {
43		/* gpio0 is used to power on/off control*/
44		wr32(wx, NGBE_GPIO_DDR, 0x1);
45		ngbe_sfp_modules_txrx_powerctl(wx, false);
46	}
47	return 0;
48}
49
50void ngbe_sfp_modules_txrx_powerctl(struct wx *wx, bool swi)
51{
52	/* gpio0 is used to power on control . 0 is on */
53	wr32(wx, NGBE_GPIO_DR, swi ? 0 : NGBE_GPIO_DR_0);
54}
55
56/**
57 *  ngbe_reset_hw - Perform hardware reset
58 *  @wx: pointer to hardware structure
59 *
60 *  Resets the hardware by resetting the transmit and receive units, masks
61 *  and clears all interrupts, perform a PHY reset, and perform a link (MAC)
62 *  reset.
63 **/
64int ngbe_reset_hw(struct wx *wx)
65{
66	u32 val = 0;
67	int ret = 0;
68
69	/* Call wx stop to disable tx/rx and clear interrupts */
70	ret = wx_stop_adapter(wx);
71	if (ret != 0)
72		return ret;
73
74	if (wx->mac_type != em_mac_type_mdi) {
75		val = WX_MIS_RST_LAN_RST(wx->bus.func);
76		wr32(wx, WX_MIS_RST, val | rd32(wx, WX_MIS_RST));
77
78		ret = read_poll_timeout(rd32, val,
79					!(val & (BIT(9) << wx->bus.func)), 1000,
80					100000, false, wx, 0x10028);
81		if (ret) {
82			wx_err(wx, "Lan reset exceed s maximum times.\n");
83			return ret;
84		}
85	}
86	ngbe_reset_misc(wx);
87
88	wx_clear_hw_cntrs(wx);
89
90	/* Store the permanent mac address */
91	wx_get_mac_addr(wx, wx->mac.perm_addr);
92
93	/* reset num_rar_entries to 128 */
94	wx->mac.num_rar_entries = NGBE_RAR_ENTRIES;
95	wx_init_rx_addrs(wx);
96	pci_set_master(wx->pdev);
97
98	return 0;
99}
100