1// SPDX-License-Identifier: GPL-2.0-only
2/* Atlantic Network Driver
3 * Copyright (C) 2020 Marvell International Ltd.
4 */
5
6#include <linux/iopoll.h>
7
8#include "aq_hw_utils.h"
9#include "hw_atl/hw_atl_utils.h"
10#include "hw_atl2_utils.h"
11#include "hw_atl2_llh.h"
12#include "hw_atl2_llh_internal.h"
13
14#define HW_ATL2_FW_VER_1X          0x01000000U
15
16#define AQ_A2_BOOT_STARTED         BIT(0x18)
17#define AQ_A2_CRASH_INIT           BIT(0x1B)
18#define AQ_A2_BOOT_CODE_FAILED     BIT(0x1C)
19#define AQ_A2_FW_INIT_FAILED       BIT(0x1D)
20#define AQ_A2_FW_INIT_COMP_SUCCESS BIT(0x1F)
21
22#define AQ_A2_FW_BOOT_FAILED_MASK (AQ_A2_CRASH_INIT | \
23				   AQ_A2_BOOT_CODE_FAILED | \
24				   AQ_A2_FW_INIT_FAILED)
25#define AQ_A2_FW_BOOT_COMPLETE_MASK (AQ_A2_FW_BOOT_FAILED_MASK | \
26				     AQ_A2_FW_INIT_COMP_SUCCESS)
27
28#define AQ_A2_FW_BOOT_REQ_REBOOT        BIT(0x0)
29#define AQ_A2_FW_BOOT_REQ_HOST_BOOT     BIT(0x8)
30#define AQ_A2_FW_BOOT_REQ_MAC_FAST_BOOT BIT(0xA)
31#define AQ_A2_FW_BOOT_REQ_PHY_FAST_BOOT BIT(0xB)
32
33int hw_atl2_utils_initfw(struct aq_hw_s *self, const struct aq_fw_ops **fw_ops)
34{
35	int err;
36
37	self->fw_ver_actual = hw_atl2_utils_get_fw_version(self);
38
39	if (hw_atl_utils_ver_match(HW_ATL2_FW_VER_1X, self->fw_ver_actual)) {
40		*fw_ops = &aq_a2_fw_ops;
41	} else {
42		aq_pr_err("Bad FW version detected: %x, but continue\n",
43			  self->fw_ver_actual);
44		*fw_ops = &aq_a2_fw_ops;
45	}
46	aq_pr_trace("Detect ATL2FW %x\n", self->fw_ver_actual);
47	self->aq_fw_ops = *fw_ops;
48	err = self->aq_fw_ops->init(self);
49
50	self->chip_features |= ATL_HW_CHIP_ANTIGUA;
51
52	return err;
53}
54
55static bool hw_atl2_mcp_boot_complete(struct aq_hw_s *self)
56{
57	u32 rbl_status;
58
59	rbl_status = hw_atl2_mif_mcp_boot_reg_get(self);
60	if (rbl_status & AQ_A2_FW_BOOT_COMPLETE_MASK)
61		return true;
62
63	/* Host boot requested */
64	if (hw_atl2_mif_host_req_int_get(self) & HW_ATL2_MCP_HOST_REQ_INT_READY)
65		return true;
66
67	return false;
68}
69
70int hw_atl2_utils_soft_reset(struct aq_hw_s *self)
71{
72	bool rbl_complete = false;
73	u32 rbl_status = 0;
74	u32 rbl_request;
75	int err;
76
77	hw_atl2_mif_host_req_int_clr(self, 0x01);
78	rbl_request = AQ_A2_FW_BOOT_REQ_REBOOT;
79#ifdef AQ_CFG_FAST_START
80	rbl_request |= AQ_A2_FW_BOOT_REQ_MAC_FAST_BOOT;
81#endif
82	hw_atl2_mif_mcp_boot_reg_set(self, rbl_request);
83
84	/* Wait for RBL boot */
85	err = readx_poll_timeout_atomic(hw_atl2_mif_mcp_boot_reg_get, self,
86				rbl_status,
87				((rbl_status & AQ_A2_BOOT_STARTED) &&
88				 (rbl_status != 0xFFFFFFFFu)),
89				10, 200000);
90	if (err) {
91		aq_pr_err("Boot code hanged");
92		goto err_exit;
93	}
94
95	err = readx_poll_timeout_atomic(hw_atl2_mcp_boot_complete, self,
96					rbl_complete,
97					rbl_complete,
98					10, 2000000);
99
100	if (err) {
101		aq_pr_err("FW Restart timed out");
102		goto err_exit;
103	}
104
105	rbl_status = hw_atl2_mif_mcp_boot_reg_get(self);
106
107	if (rbl_status & AQ_A2_FW_BOOT_FAILED_MASK) {
108		err = -EIO;
109		aq_pr_err("FW Restart failed");
110		goto err_exit;
111	}
112
113	if (hw_atl2_mif_host_req_int_get(self) &
114	    HW_ATL2_MCP_HOST_REQ_INT_READY) {
115		err = -EIO;
116		aq_pr_err("No FW detected. Dynamic FW load not implemented");
117		goto err_exit;
118	}
119
120	if (self->aq_fw_ops) {
121		err = self->aq_fw_ops->init(self);
122		if (err) {
123			aq_pr_err("FW Init failed");
124			goto err_exit;
125		}
126	}
127
128err_exit:
129	return err;
130}
131