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gerrit-public.fairphone.software / kernel / msm / f1d3d38af75789f1b82969b83b69cab540609789 / . / drivers / net / chelsio / my3126.c
blob: 0b90014d5b3e7a4d19f032c679b57c72a3b98f59 [file] [log] [blame]
Stephen Hemmingerf1d3d382006-12-01 16:36:16 -0800[diff] [blame^]1/* $Date: 2005/11/12 02:13:49 $ $RCSfile: my3126.c,v $ $Revision: 1.15 $ */
2#include "cphy.h"
3#include "elmer0.h"
4#include "suni1x10gexp_regs.h"
5
6/* Port Reset */
7static int my3126_reset(struct cphy *cphy, int wait)
8{
9 /*
10 * This can be done through registers. It is not required since
11 * a full chip reset is used.
12 */
13 return (0);
14}
15
16static int my3126_interrupt_enable(struct cphy *cphy)
17{
18 schedule_delayed_work(&cphy->phy_update, HZ/30);
19 t1_tpi_read(cphy->adapter, A_ELMER0_GPO, &cphy->elmer_gpo);
20 return (0);
21}
22
23static int my3126_interrupt_disable(struct cphy *cphy)
24{
25 cancel_rearming_delayed_work(&cphy->phy_update);
26 return (0);
27}
28
29static int my3126_interrupt_clear(struct cphy *cphy)
30{
31 return (0);
32}
33
34#define OFFSET(REG_ADDR) (REG_ADDR << 2)
35
36static int my3126_interrupt_handler(struct cphy *cphy)
37{
38 u32 val;
39 u16 val16;
40 u16 status;
41 u32 act_count;
42 adapter_t *adapter;
43 adapter = cphy->adapter;
44
45 if (cphy->count == 50) {
46 mdio_read(cphy, 0x1, 0x1, &val);
47 val16 = (u16) val;
48 status = cphy->bmsr ^ val16;
49
50 if (status & BMSR_LSTATUS)
51 t1_link_changed(adapter, 0);
52 cphy->bmsr = val16;
53
54 /* We have only enabled link change interrupts so it
55 must be that
56 */
57 cphy->count = 0;
58 }
59
60 t1_tpi_write(adapter, OFFSET(SUNI1x10GEXP_REG_MSTAT_CONTROL),
61 SUNI1x10GEXP_BITMSK_MSTAT_SNAP);
62 t1_tpi_read(adapter,
63 OFFSET(SUNI1x10GEXP_REG_MSTAT_COUNTER_1_LOW), &act_count);
64 t1_tpi_read(adapter,
65 OFFSET(SUNI1x10GEXP_REG_MSTAT_COUNTER_33_LOW), &val);
66 act_count += val;
67
68 /* Populate elmer_gpo with the register value */
69 t1_tpi_read(adapter, A_ELMER0_GPO, &val);
70 cphy->elmer_gpo = val;
71
72 if ( (val & (1 << 8)) || (val & (1 << 19)) ||
73 (cphy->act_count == act_count) || cphy->act_on ) {
74 if (is_T2(adapter))
75 val |= (1 << 9);
76 else if (t1_is_T1B(adapter))
77 val |= (1 << 20);
78 cphy->act_on = 0;
79 } else {
80 if (is_T2(adapter))
81 val &= ~(1 << 9);
82 else if (t1_is_T1B(adapter))
83 val &= ~(1 << 20);
84 cphy->act_on = 1;
85 }
86
87 t1_tpi_write(adapter, A_ELMER0_GPO, val);
88
89 cphy->elmer_gpo = val;
90 cphy->act_count = act_count;
91 cphy->count++;
92
93 return cphy_cause_link_change;
94}
95
96static void my3216_poll(void *arg)
97{
98 my3126_interrupt_handler(arg);
99}
100
101static int my3126_set_loopback(struct cphy *cphy, int on)
102{
103 return (0);
104}
105
106/* To check the activity LED */
107static int my3126_get_link_status(struct cphy *cphy,
108 int *link_ok, int *speed, int *duplex, int *fc)
109{
110 u32 val;
111 u16 val16;
112 adapter_t *adapter;
113
114 adapter = cphy->adapter;
115 mdio_read(cphy, 0x1, 0x1, &val);
116 val16 = (u16) val;
117
118 /* Populate elmer_gpo with the register value */
119 t1_tpi_read(adapter, A_ELMER0_GPO, &val);
120 cphy->elmer_gpo = val;
121
122 *link_ok = (val16 & BMSR_LSTATUS);
123
124 if (*link_ok) {
125 /* Turn on the LED. */
126 if (is_T2(adapter))
127 val &= ~(1 << 8);
128 else if (t1_is_T1B(adapter))
129 val &= ~(1 << 19);
130 } else {
131 /* Turn off the LED. */
132 if (is_T2(adapter))
133 val |= (1 << 8);
134 else if (t1_is_T1B(adapter))
135 val |= (1 << 19);
136 }
137
138 t1_tpi_write(adapter, A_ELMER0_GPO, val);
139 cphy->elmer_gpo = val;
140 *speed = SPEED_10000;
141 *duplex = DUPLEX_FULL;
142
143 /* need to add flow control */
144 if (fc)
145 *fc = PAUSE_RX | PAUSE_TX;
146
147 return (0);
148}
149
150static void my3126_destroy(struct cphy *cphy)
151{
152 kfree(cphy);
153}
154
155static struct cphy_ops my3126_ops = {
156 .destroy = my3126_destroy,
157 .reset = my3126_reset,
158 .interrupt_enable = my3126_interrupt_enable,
159 .interrupt_disable = my3126_interrupt_disable,
160 .interrupt_clear = my3126_interrupt_clear,
161 .interrupt_handler = my3126_interrupt_handler,
162 .get_link_status = my3126_get_link_status,
163 .set_loopback = my3126_set_loopback,
164};
165
166static struct cphy *my3126_phy_create(adapter_t *adapter,
167 int phy_addr, struct mdio_ops *mdio_ops)
168{
169 struct cphy *cphy = kzalloc(sizeof (*cphy), GFP_KERNEL);
170
171 if (cphy)
172 cphy_init(cphy, adapter, phy_addr, &my3126_ops, mdio_ops);
173
174 INIT_WORK(&cphy->phy_update, my3216_poll, cphy);
175 cphy->bmsr = 0;
176
177 return (cphy);
178}
179
180/* Chip Reset */
181static int my3126_phy_reset(adapter_t * adapter)
182{
183 u32 val;
184
185 t1_tpi_read(adapter, A_ELMER0_GPO, &val);
186 val &= ~4;
187 t1_tpi_write(adapter, A_ELMER0_GPO, val);
188 msleep(100);
189
190 t1_tpi_write(adapter, A_ELMER0_GPO, val | 4);
191 msleep(1000);
192
193 /* Now lets enable the Laser. Delay 100us */
194 t1_tpi_read(adapter, A_ELMER0_GPO, &val);
195 val |= 0x8000;
196 t1_tpi_write(adapter, A_ELMER0_GPO, val);
197 udelay(100);
198 return (0);
199}
200
201struct gphy t1_my3126_ops = {
202 my3126_phy_create,
203 my3126_phy_reset
204};