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1 From 14a44ab0330d290fade1403a920e299cc56d7300 Mon Sep 17 00:00:00 2001
2 From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
3 Date: Wed, 18 May 2022 15:55:28 +0100
4 Subject: [PATCH 12/12] net: mtk_eth_soc: partially convert to phylink_pcs
5
6 Partially convert mtk_eth_soc to phylink_pcs, moving the configuration,
7 link up and AN restart over. However, it seems mac_pcs_get_state()
8 doesn't actually get the state from the PCS, so we can't convert that
9 over without a better understanding of the hardware.
10
11 Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
12 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
13 ---
14 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 49 ++++++++----------
15 drivers/net/ethernet/mediatek/mtk_eth_soc.h | 7 ++-
16 drivers/net/ethernet/mediatek/mtk_sgmii.c | 55 +++++++++++----------
17 3 files changed, 53 insertions(+), 58 deletions(-)
18
19 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
20 +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
21 @@ -310,6 +310,25 @@ static void mtk_gmac0_rgmii_adjust(struc
22 mtk_w32(eth, val, TRGMII_TCK_CTRL);
23 }
24
25 +static struct phylink_pcs *mtk_mac_select_pcs(struct phylink_config *config,
26 + phy_interface_t interface)
27 +{
28 + struct mtk_mac *mac = container_of(config, struct mtk_mac,
29 + phylink_config);
30 + struct mtk_eth *eth = mac->hw;
31 + unsigned int sid;
32 +
33 + if (interface == PHY_INTERFACE_MODE_SGMII ||
34 + phy_interface_mode_is_8023z(interface)) {
35 + sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ?
36 + 0 : mac->id;
37 +
38 + return mtk_sgmii_select_pcs(eth->sgmii, sid);
39 + }
40 +
41 + return NULL;
42 +}
43 +
44 static void mtk_mac_config(struct phylink_config *config, unsigned int mode,
45 const struct phylink_link_state *state)
46 {
47 @@ -317,7 +336,7 @@ static void mtk_mac_config(struct phylin
48 phylink_config);
49 struct mtk_eth *eth = mac->hw;
50 int val, ge_mode, err = 0;
51 - u32 sid, i;
52 + u32 i;
53
54 /* MT76x8 has no hardware settings between for the MAC */
55 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628) &&
56 @@ -438,15 +457,6 @@ static void mtk_mac_config(struct phylin
57 SYSCFG0_SGMII_MASK,
58 ~(u32)SYSCFG0_SGMII_MASK);
59
60 - /* Decide how GMAC and SGMIISYS be mapped */
61 - sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ?
62 - 0 : mac->id;
63 -
64 - /* Setup SGMIISYS with the determined property */
65 - err = mtk_sgmii_config(eth->sgmii, sid, mode, state->interface);
66 - if (err)
67 - goto init_err;
68 -
69 /* Save the syscfg0 value for mac_finish */
70 mac->syscfg0 = val;
71 } else if (phylink_autoneg_inband(mode)) {
72 @@ -526,14 +536,6 @@ static void mtk_mac_pcs_get_state(struct
73 state->pause |= MLO_PAUSE_TX;
74 }
75
76 -static void mtk_mac_an_restart(struct phylink_config *config)
77 -{
78 - struct mtk_mac *mac = container_of(config, struct mtk_mac,
79 - phylink_config);
80 -
81 - mtk_sgmii_restart_an(mac->hw, mac->id);
82 -}
83 -
84 static void mtk_mac_link_down(struct phylink_config *config, unsigned int mode,
85 phy_interface_t interface)
86 {
87 @@ -554,15 +556,6 @@ static void mtk_mac_link_up(struct phyli
88 phylink_config);
89 u32 mcr;
90
91 - if (phy_interface_mode_is_8023z(interface)) {
92 - struct mtk_eth *eth = mac->hw;
93 -
94 - /* Decide how GMAC and SGMIISYS be mapped */
95 - int sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ?
96 - 0 : mac->id;
97 - mtk_sgmii_link_up(eth->sgmii, sid, speed, duplex);
98 - }
99 -
100 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id));
101 mcr &= ~(MAC_MCR_SPEED_100 | MAC_MCR_SPEED_1000 |
102 MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_TX_FC |
103 @@ -595,8 +588,8 @@ static void mtk_mac_link_up(struct phyli
104
105 static const struct phylink_mac_ops mtk_phylink_ops = {
106 .validate = phylink_generic_validate,
107 + .mac_select_pcs = mtk_mac_select_pcs,
108 .mac_pcs_get_state = mtk_mac_pcs_get_state,
109 - .mac_an_restart = mtk_mac_an_restart,
110 .mac_config = mtk_mac_config,
111 .mac_finish = mtk_mac_finish,
112 .mac_link_down = mtk_mac_link_down,
113 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
114 +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
115 @@ -964,10 +964,12 @@ struct mtk_soc_data {
116 * @regmap: The register map pointing at the range used to setup
117 * SGMII modes
118 * @ana_rgc3: The offset refers to register ANA_RGC3 related to regmap
119 + * @pcs: Phylink PCS structure
120 */
121 struct mtk_pcs {
122 struct regmap *regmap;
123 u32 ana_rgc3;
124 + struct phylink_pcs pcs;
125 };
126
127 /* struct mtk_sgmii - This is the structure holding sgmii regmap and its
128 @@ -1107,12 +1109,9 @@ void mtk_stats_update_mac(struct mtk_mac
129 void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg);
130 u32 mtk_r32(struct mtk_eth *eth, unsigned reg);
131
132 +struct phylink_pcs *mtk_sgmii_select_pcs(struct mtk_sgmii *ss, int id);
133 int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *np,
134 u32 ana_rgc3);
135 -int mtk_sgmii_config(struct mtk_sgmii *ss, int id, unsigned int mode,
136 - phy_interface_t interface);
137 -void mtk_sgmii_link_up(struct mtk_sgmii *ss, int id, int speed, int duplex);
138 -void mtk_sgmii_restart_an(struct mtk_eth *eth, int mac_id);
139
140 int mtk_gmac_sgmii_path_setup(struct mtk_eth *eth, int mac_id);
141 int mtk_gmac_gephy_path_setup(struct mtk_eth *eth, int mac_id);
142 --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c
143 +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c
144 @@ -14,14 +14,16 @@
145
146 #include "mtk_eth_soc.h"
147
148 +static struct mtk_pcs *pcs_to_mtk_pcs(struct phylink_pcs *pcs)
149 +{
150 + return container_of(pcs, struct mtk_pcs, pcs);
151 +}
152 +
153 /* For SGMII interface mode */
154 static int mtk_pcs_setup_mode_an(struct mtk_pcs *mpcs)
155 {
156 unsigned int val;
157
158 - if (!mpcs->regmap)
159 - return -EINVAL;
160 -
161 /* Setup the link timer and QPHY power up inside SGMIISYS */
162 regmap_write(mpcs->regmap, SGMSYS_PCS_LINK_TIMER,
163 SGMII_LINK_TIMER_DEFAULT);
164 @@ -50,9 +52,6 @@ static int mtk_pcs_setup_mode_force(stru
165 {
166 unsigned int val;
167
168 - if (!mpcs->regmap)
169 - return -EINVAL;
170 -
171 regmap_read(mpcs->regmap, mpcs->ana_rgc3, &val);
172 val &= ~RG_PHY_SPEED_MASK;
173 if (interface == PHY_INTERFACE_MODE_2500BASEX)
174 @@ -78,10 +77,12 @@ static int mtk_pcs_setup_mode_force(stru
175 return 0;
176 }
177
178 -int mtk_sgmii_config(struct mtk_sgmii *ss, int id, unsigned int mode,
179 - phy_interface_t interface)
180 +static int mtk_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
181 + phy_interface_t interface,
182 + const unsigned long *advertising,
183 + bool permit_pause_to_mac)
184 {
185 - struct mtk_pcs *mpcs = &ss->pcs[id];
186 + struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs);
187 int err = 0;
188
189 /* Setup SGMIISYS with the determined property */
190 @@ -93,22 +94,25 @@ int mtk_sgmii_config(struct mtk_sgmii *s
191 return err;
192 }
193
194 -static void mtk_pcs_restart_an(struct mtk_pcs *mpcs)
195 +static void mtk_pcs_restart_an(struct phylink_pcs *pcs)
196 {
197 + struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs);
198 unsigned int val;
199
200 - if (!mpcs->regmap)
201 - return;
202 -
203 regmap_read(mpcs->regmap, SGMSYS_PCS_CONTROL_1, &val);
204 val |= SGMII_AN_RESTART;
205 regmap_write(mpcs->regmap, SGMSYS_PCS_CONTROL_1, val);
206 }
207
208 -static void mtk_pcs_link_up(struct mtk_pcs *mpcs, int speed, int duplex)
209 +static void mtk_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
210 + phy_interface_t interface, int speed, int duplex)
211 {
212 + struct mtk_pcs *mpcs = pcs_to_mtk_pcs(pcs);
213 unsigned int val;
214
215 + if (!phy_interface_mode_is_8023z(interface))
216 + return;
217 +
218 /* SGMII force duplex setting */
219 regmap_read(mpcs->regmap, SGMSYS_SGMII_MODE, &val);
220 val &= ~SGMII_DUPLEX_FULL;
221 @@ -118,11 +122,11 @@ static void mtk_pcs_link_up(struct mtk_p
222 regmap_write(mpcs->regmap, SGMSYS_SGMII_MODE, val);
223 }
224
225 -/* For 1000BASE-X and 2500BASE-X interface modes */
226 -void mtk_sgmii_link_up(struct mtk_sgmii *ss, int id, int speed, int duplex)
227 -{
228 - mtk_pcs_link_up(&ss->pcs[id], speed, duplex);
229 -}
230 +static const struct phylink_pcs_ops mtk_pcs_ops = {
231 + .pcs_config = mtk_pcs_config,
232 + .pcs_an_restart = mtk_pcs_restart_an,
233 + .pcs_link_up = mtk_pcs_link_up,
234 +};
235
236 int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *r, u32 ana_rgc3)
237 {
238 @@ -139,18 +143,17 @@ int mtk_sgmii_init(struct mtk_sgmii *ss,
239 of_node_put(np);
240 if (IS_ERR(ss->pcs[i].regmap))
241 return PTR_ERR(ss->pcs[i].regmap);
242 +
243 + ss->pcs[i].pcs.ops = &mtk_pcs_ops;
244 }
245
246 return 0;
247 }
248
249 -void mtk_sgmii_restart_an(struct mtk_eth *eth, int mac_id)
250 +struct phylink_pcs *mtk_sgmii_select_pcs(struct mtk_sgmii *ss, int id)
251 {
252 - unsigned int sid;
253 -
254 - /* Decide how GMAC and SGMIISYS be mapped */
255 - sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ?
256 - 0 : mac_id;
257 + if (!ss->pcs[id].regmap)
258 + return NULL;
259
260 - mtk_pcs_restart_an(&eth->sgmii->pcs[sid]);
261 + return &ss->pcs[id].pcs;
262 }
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