1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2009-2010 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 "mcdi.h"
13 #include "mcdi_pcol.h"
14
efx_mcdi_set_mac(struct efx_nic * efx)15 int efx_mcdi_set_mac(struct efx_nic *efx)
16 {
17 u32 reject, fcntl;
18 u8 cmdbytes[MC_CMD_SET_MAC_IN_LEN];
19
20 memcpy(cmdbytes + MC_CMD_SET_MAC_IN_ADDR_OFST,
21 efx->net_dev->dev_addr, ETH_ALEN);
22
23 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU,
24 EFX_MAX_FRAME_LEN(efx->net_dev->mtu));
25 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0);
26
27 /* The MCDI command provides for controlling accept/reject
28 * of broadcast packets too, but the driver doesn't currently
29 * expose this. */
30 reject = (efx->promiscuous) ? 0 :
31 (1 << MC_CMD_SET_MAC_IN_REJECT_UNCST_LBN);
32 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_REJECT, reject);
33
34 switch (efx->wanted_fc) {
35 case EFX_FC_RX | EFX_FC_TX:
36 fcntl = MC_CMD_FCNTL_BIDIR;
37 break;
38 case EFX_FC_RX:
39 fcntl = MC_CMD_FCNTL_RESPOND;
40 break;
41 default:
42 fcntl = MC_CMD_FCNTL_OFF;
43 break;
44 }
45 if (efx->wanted_fc & EFX_FC_AUTO)
46 fcntl = MC_CMD_FCNTL_AUTO;
47 if (efx->fc_disable)
48 fcntl = MC_CMD_FCNTL_OFF;
49
50 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl);
51
52 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes),
53 NULL, 0, NULL);
54 }
55
efx_mcdi_mac_check_fault(struct efx_nic * efx)56 bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
57 {
58 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
59 size_t outlength;
60 int rc;
61
62 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
63
64 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
65 outbuf, sizeof(outbuf), &outlength);
66 if (rc) {
67 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
68 __func__, rc);
69 return true;
70 }
71
72 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
73 }
74
efx_mcdi_mac_stats(struct efx_nic * efx,dma_addr_t dma_addr,u32 dma_len,int enable,int clear)75 int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
76 u32 dma_len, int enable, int clear)
77 {
78 u8 inbuf[MC_CMD_MAC_STATS_IN_LEN];
79 int rc;
80 efx_dword_t *cmd_ptr;
81 int period = enable ? 1000 : 0;
82 u32 addr_hi;
83 u32 addr_lo;
84
85 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0);
86
87 addr_lo = ((u64)dma_addr) >> 0;
88 addr_hi = ((u64)dma_addr) >> 32;
89
90 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_LO, addr_lo);
91 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_HI, addr_hi);
92 cmd_ptr = (efx_dword_t *)MCDI_PTR(inbuf, MAC_STATS_IN_CMD);
93 EFX_POPULATE_DWORD_7(*cmd_ptr,
94 MC_CMD_MAC_STATS_IN_DMA, !!enable,
95 MC_CMD_MAC_STATS_IN_CLEAR, clear,
96 MC_CMD_MAC_STATS_IN_PERIODIC_CHANGE, 1,
97 MC_CMD_MAC_STATS_IN_PERIODIC_ENABLE, !!enable,
98 MC_CMD_MAC_STATS_IN_PERIODIC_CLEAR, 0,
99 MC_CMD_MAC_STATS_IN_PERIODIC_NOEVENT, 1,
100 MC_CMD_MAC_STATS_IN_PERIOD_MS, period);
101 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
102
103 rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
104 NULL, 0, NULL);
105 if (rc)
106 goto fail;
107
108 return 0;
109
110 fail:
111 netif_err(efx, hw, efx->net_dev, "%s: %s failed rc=%d\n",
112 __func__, enable ? "enable" : "disable", rc);
113 return rc;
114 }
115
efx_mcdi_mac_reconfigure(struct efx_nic * efx)116 int efx_mcdi_mac_reconfigure(struct efx_nic *efx)
117 {
118 int rc;
119
120 WARN_ON(!mutex_is_locked(&efx->mac_lock));
121
122 rc = efx_mcdi_set_mac(efx);
123 if (rc != 0)
124 return rc;
125
126 return efx_mcdi_rpc(efx, MC_CMD_SET_MCAST_HASH,
127 efx->multicast_hash.byte,
128 sizeof(efx->multicast_hash),
129 NULL, 0, NULL);
130 }
131