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1 | /**************************************************************************** |
2 | * Driver for Solarflare Solarstorm network controllers and boards | |
3 | * Copyright 2009 Solarflare Communications Inc. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published | |
7 | * by the Free Software Foundation, incorporated herein by reference. | |
8 | */ | |
9 | ||
10 | #include "net_driver.h" | |
11 | #include "efx.h" | |
12 | #include "mac.h" | |
13 | #include "mcdi.h" | |
14 | #include "mcdi_pcol.h" | |
15 | ||
16 | static int efx_mcdi_set_mac(struct efx_nic *efx) | |
17 | { | |
18 | u32 reject, fcntl; | |
19 | u8 cmdbytes[MC_CMD_SET_MAC_IN_LEN]; | |
20 | ||
21 | memcpy(cmdbytes + MC_CMD_SET_MAC_IN_ADDR_OFST, | |
22 | efx->net_dev->dev_addr, ETH_ALEN); | |
23 | ||
24 | MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU, | |
25 | EFX_MAX_FRAME_LEN(efx->net_dev->mtu)); | |
26 | MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0); | |
27 | ||
28 | /* The MCDI command provides for controlling accept/reject | |
29 | * of broadcast packets too, but the driver doesn't currently | |
30 | * expose this. */ | |
31 | reject = (efx->promiscuous) ? 0 : | |
32 | (1 << MC_CMD_SET_MAC_IN_REJECT_UNCST_LBN); | |
33 | MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_REJECT, reject); | |
34 | ||
35 | switch (efx->wanted_fc) { | |
36 | case EFX_FC_RX | EFX_FC_TX: | |
37 | fcntl = MC_CMD_FCNTL_BIDIR; | |
38 | break; | |
39 | case EFX_FC_RX: | |
40 | fcntl = MC_CMD_FCNTL_RESPOND; | |
41 | break; | |
42 | default: | |
43 | fcntl = MC_CMD_FCNTL_OFF; | |
44 | break; | |
45 | } | |
46 | if (efx->wanted_fc & EFX_FC_AUTO) | |
47 | fcntl = MC_CMD_FCNTL_AUTO; | |
48 | ||
49 | MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl); | |
50 | ||
51 | return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes), | |
52 | NULL, 0, NULL); | |
53 | } | |
54 | ||
55 | static int efx_mcdi_get_mac_faults(struct efx_nic *efx, u32 *faults) | |
56 | { | |
57 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; | |
58 | size_t outlength; | |
59 | int rc; | |
60 | ||
61 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); | |
62 | ||
63 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, | |
64 | outbuf, sizeof(outbuf), &outlength); | |
65 | if (rc) | |
66 | goto fail; | |
67 | ||
68 | *faults = MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT); | |
69 | return 0; | |
70 | ||
71 | fail: | |
62776d03 BH |
72 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", |
73 | __func__, rc); | |
afd4aea0 BH |
74 | return rc; |
75 | } | |
76 | ||
77 | int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr, | |
78 | u32 dma_len, int enable, int clear) | |
79 | { | |
80 | u8 inbuf[MC_CMD_MAC_STATS_IN_LEN]; | |
81 | int rc; | |
82 | efx_dword_t *cmd_ptr; | |
3a595102 | 83 | int period = enable ? 1000 : 0; |
afd4aea0 BH |
84 | u32 addr_hi; |
85 | u32 addr_lo; | |
86 | ||
87 | BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_LEN != 0); | |
88 | ||
89 | addr_lo = ((u64)dma_addr) >> 0; | |
90 | addr_hi = ((u64)dma_addr) >> 32; | |
91 | ||
92 | MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_LO, addr_lo); | |
93 | MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_HI, addr_hi); | |
94 | cmd_ptr = (efx_dword_t *)MCDI_PTR(inbuf, MAC_STATS_IN_CMD); | |
3a595102 SH |
95 | EFX_POPULATE_DWORD_7(*cmd_ptr, |
96 | MC_CMD_MAC_STATS_CMD_DMA, !!enable, | |
97 | MC_CMD_MAC_STATS_CMD_CLEAR, clear, | |
98 | MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1, | |
99 | MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, !!enable, | |
100 | MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0, | |
101 | MC_CMD_MAC_STATS_CMD_PERIODIC_NOEVENT, 1, | |
102 | MC_CMD_MAC_STATS_CMD_PERIOD_MS, period); | |
afd4aea0 BH |
103 | MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len); |
104 | ||
105 | rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf), | |
106 | NULL, 0, NULL); | |
107 | if (rc) | |
108 | goto fail; | |
109 | ||
110 | return 0; | |
111 | ||
112 | fail: | |
62776d03 BH |
113 | netif_err(efx, hw, efx->net_dev, "%s: %s failed rc=%d\n", |
114 | __func__, enable ? "enable" : "disable", rc); | |
afd4aea0 BH |
115 | return rc; |
116 | } | |
117 | ||
118 | static int efx_mcdi_mac_reconfigure(struct efx_nic *efx) | |
119 | { | |
120 | int rc; | |
121 | ||
122 | rc = efx_mcdi_set_mac(efx); | |
123 | if (rc != 0) | |
124 | return rc; | |
125 | ||
126 | /* Restore the multicast hash registers. */ | |
127 | efx->type->push_multicast_hash(efx); | |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
132 | ||
133 | static bool efx_mcdi_mac_check_fault(struct efx_nic *efx) | |
134 | { | |
135 | u32 faults; | |
136 | int rc = efx_mcdi_get_mac_faults(efx, &faults); | |
137 | return (rc != 0) || (faults != 0); | |
138 | } | |
139 | ||
140 | ||
141 | struct efx_mac_operations efx_mcdi_mac_operations = { | |
142 | .reconfigure = efx_mcdi_mac_reconfigure, | |
143 | .update_stats = efx_port_dummy_op_void, | |
144 | .check_fault = efx_mcdi_mac_check_fault, | |
145 | }; |