1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
From 4264350acb75430d5021a1d7de56a33faf69a097 Mon Sep 17 00:00:00 2001
From: Ansuel Smith <ansuelsmth@gmail.com>
Date: Wed, 2 Feb 2022 01:03:32 +0100
Subject: [PATCH 13/16] net: dsa: qca8k: move page cache to driver priv
There can be multiple qca8k switch on the same system. Move the static
qca8k_current_page to qca8k_priv and make it specific for each switch.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/qca8k.c | 42 ++++++++++++++++++++---------------------
drivers/net/dsa/qca8k.h | 9 +++++++++
2 files changed, 29 insertions(+), 22 deletions(-)
--- a/drivers/net/dsa/qca8k.c
+++ b/drivers/net/dsa/qca8k.c
@@ -75,12 +75,6 @@ static const struct qca8k_mib_desc ar832
MIB_DESC(1, 0xac, "TXUnicast"),
};
-/* The 32bit switch registers are accessed indirectly. To achieve this we need
- * to set the page of the register. Track the last page that was set to reduce
- * mdio writes
- */
-static u16 qca8k_current_page = 0xffff;
-
static void
qca8k_split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
{
@@ -134,11 +128,13 @@ qca8k_mii_write32(struct mii_bus *bus, i
}
static int
-qca8k_set_page(struct mii_bus *bus, u16 page)
+qca8k_set_page(struct qca8k_priv *priv, u16 page)
{
+ u16 *cached_page = &priv->mdio_cache.page;
+ struct mii_bus *bus = priv->bus;
int ret;
- if (page == qca8k_current_page)
+ if (page == *cached_page)
return 0;
ret = bus->write(bus, 0x18, 0, page);
@@ -148,7 +144,7 @@ qca8k_set_page(struct mii_bus *bus, u16
return ret;
}
- qca8k_current_page = page;
+ *cached_page = page;
usleep_range(1000, 2000);
return 0;
}
@@ -374,7 +370,7 @@ qca8k_regmap_read(void *ctx, uint32_t re
mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
- ret = qca8k_set_page(bus, page);
+ ret = qca8k_set_page(priv, page);
if (ret < 0)
goto exit;
@@ -400,7 +396,7 @@ qca8k_regmap_write(void *ctx, uint32_t r
mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
- ret = qca8k_set_page(bus, page);
+ ret = qca8k_set_page(priv, page);
if (ret < 0)
goto exit;
@@ -427,7 +423,7 @@ qca8k_regmap_update_bits(void *ctx, uint
mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
- ret = qca8k_set_page(bus, page);
+ ret = qca8k_set_page(priv, page);
if (ret < 0)
goto exit;
@@ -1098,8 +1094,9 @@ qca8k_mdio_busy_wait(struct mii_bus *bus
}
static int
-qca8k_mdio_write(struct mii_bus *bus, int phy, int regnum, u16 data)
+qca8k_mdio_write(struct qca8k_priv *priv, int phy, int regnum, u16 data)
{
+ struct mii_bus *bus = priv->bus;
u16 r1, r2, page;
u32 val;
int ret;
@@ -1116,7 +1113,7 @@ qca8k_mdio_write(struct mii_bus *bus, in
mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
- ret = qca8k_set_page(bus, page);
+ ret = qca8k_set_page(priv, page);
if (ret)
goto exit;
@@ -1135,8 +1132,9 @@ exit:
}
static int
-qca8k_mdio_read(struct mii_bus *bus, int phy, int regnum)
+qca8k_mdio_read(struct qca8k_priv *priv, int phy, int regnum)
{
+ struct mii_bus *bus = priv->bus;
u16 r1, r2, page;
u32 val;
int ret;
@@ -1152,7 +1150,7 @@ qca8k_mdio_read(struct mii_bus *bus, int
mutex_lock_nested(&bus->mdio_lock, MDIO_MUTEX_NESTED);
- ret = qca8k_set_page(bus, page);
+ ret = qca8k_set_page(priv, page);
if (ret)
goto exit;
@@ -1181,7 +1179,6 @@ static int
qca8k_internal_mdio_write(struct mii_bus *slave_bus, int phy, int regnum, u16 data)
{
struct qca8k_priv *priv = slave_bus->priv;
- struct mii_bus *bus = priv->bus;
int ret;
/* Use mdio Ethernet when available, fallback to legacy one on error */
@@ -1189,14 +1186,13 @@ qca8k_internal_mdio_write(struct mii_bus
if (!ret)
return 0;
- return qca8k_mdio_write(bus, phy, regnum, data);
+ return qca8k_mdio_write(priv, phy, regnum, data);
}
static int
qca8k_internal_mdio_read(struct mii_bus *slave_bus, int phy, int regnum)
{
struct qca8k_priv *priv = slave_bus->priv;
- struct mii_bus *bus = priv->bus;
int ret;
/* Use mdio Ethernet when available, fallback to legacy one on error */
@@ -1204,7 +1200,7 @@ qca8k_internal_mdio_read(struct mii_bus
if (ret >= 0)
return ret;
- return qca8k_mdio_read(bus, phy, regnum);
+ return qca8k_mdio_read(priv, phy, regnum);
}
static int
@@ -1225,7 +1221,7 @@ qca8k_phy_write(struct dsa_switch *ds, i
if (!ret)
return ret;
- return qca8k_mdio_write(priv->bus, port, regnum, data);
+ return qca8k_mdio_write(priv, port, regnum, data);
}
static int
@@ -1246,7 +1242,7 @@ qca8k_phy_read(struct dsa_switch *ds, in
if (ret >= 0)
return ret;
- ret = qca8k_mdio_read(priv->bus, port, regnum);
+ ret = qca8k_mdio_read(priv, port, regnum);
if (ret < 0)
return 0xffff;
@@ -3060,6 +3056,8 @@ qca8k_sw_probe(struct mdio_device *mdiod
return PTR_ERR(priv->regmap);
}
+ priv->mdio_cache.page = 0xffff;
+
/* Check the detected switch id */
ret = qca8k_read_switch_id(priv);
if (ret)
--- a/drivers/net/dsa/qca8k.h
+++ b/drivers/net/dsa/qca8k.h
@@ -363,6 +363,14 @@ struct qca8k_ports_config {
u8 rgmii_tx_delay[QCA8K_NUM_CPU_PORTS]; /* 0: CPU port0, 1: CPU port6 */
};
+struct qca8k_mdio_cache {
+/* The 32bit switch registers are accessed indirectly. To achieve this we need
+ * to set the page of the register. Track the last page that was set to reduce
+ * mdio writes
+ */
+ u16 page;
+};
+
struct qca8k_priv {
u8 switch_id;
u8 switch_revision;
@@ -383,6 +391,7 @@ struct qca8k_priv {
struct net_device *mgmt_master; /* Track if mdio/mib Ethernet is available */
struct qca8k_mgmt_eth_data mgmt_eth_data;
struct qca8k_mib_eth_data mib_eth_data;
+ struct qca8k_mdio_cache mdio_cache;
};
struct qca8k_mib_desc {
|
