1 /**********************************************************************
2 * Author: Cavium Networks
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
7 * Copyright (c) 2003-2007 Cavium Networks
9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation.
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Public License for more
19 * You should have received a copy of the GNU General Public License
20 * along with this file; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 * or visit http://www.gnu.org/licenses/.
24 * This file may also be available under a different license from Cavium.
25 * Contact Cavium Networks for more information
26 **********************************************************************/
27 #include <linux/kernel.h>
28 #include <linux/mii.h>
31 #include <asm/atomic.h>
32 #include <asm/octeon/octeon.h>
34 #include "ethernet-defines.h"
35 #include "ethernet-tx.h"
36 #include "ethernet-mdio.h"
37 #include "ethernet-util.h"
38 #include "octeon-ethernet.h"
39 #include "ethernet-common.h"
44 #include "cvmx-helper.h"
46 #include "cvmx-gmxx-defs.h"
49 * Get the low level ethernet statistics
51 * @dev: Device to get the statistics from
52 * Returns Pointer to the statistics
54 static struct net_device_stats
*cvm_oct_common_get_stats(struct net_device
*dev
)
56 cvmx_pip_port_status_t rx_status
;
57 cvmx_pko_port_status_t tx_status
;
58 struct octeon_ethernet
*priv
= netdev_priv(dev
);
60 if (priv
->port
< CVMX_PIP_NUM_INPUT_PORTS
) {
61 if (octeon_is_simulation()) {
62 /* The simulator doesn't support statistics */
63 memset(&rx_status
, 0, sizeof(rx_status
));
64 memset(&tx_status
, 0, sizeof(tx_status
));
66 cvmx_pip_get_port_status(priv
->port
, 1, &rx_status
);
67 cvmx_pko_get_port_status(priv
->port
, 1, &tx_status
);
70 priv
->stats
.rx_packets
+= rx_status
.inb_packets
;
71 priv
->stats
.tx_packets
+= tx_status
.packets
;
72 priv
->stats
.rx_bytes
+= rx_status
.inb_octets
;
73 priv
->stats
.tx_bytes
+= tx_status
.octets
;
74 priv
->stats
.multicast
+= rx_status
.multicast_packets
;
75 priv
->stats
.rx_crc_errors
+= rx_status
.inb_errors
;
76 priv
->stats
.rx_frame_errors
+= rx_status
.fcs_align_err_packets
;
79 * The drop counter must be incremented atomically
80 * since the RX tasklet also increments it.
83 atomic64_add(rx_status
.dropped_packets
,
84 (atomic64_t
*)&priv
->stats
.rx_dropped
);
86 atomic_add(rx_status
.dropped_packets
,
87 (atomic_t
*)&priv
->stats
.rx_dropped
);
95 * Set the multicast list. Currently unimplemented.
97 * @dev: Device to work on
99 static void cvm_oct_common_set_multicast_list(struct net_device
*dev
)
101 union cvmx_gmxx_prtx_cfg gmx_cfg
;
102 struct octeon_ethernet
*priv
= netdev_priv(dev
);
103 int interface
= INTERFACE(priv
->port
);
104 int index
= INDEX(priv
->port
);
107 && (cvmx_helper_interface_get_mode(interface
) !=
108 CVMX_HELPER_INTERFACE_MODE_SPI
)) {
109 union cvmx_gmxx_rxx_adr_ctl control
;
111 control
.s
.bcst
= 1; /* Allow broadcast MAC addresses */
113 if (dev
->mc_list
|| (dev
->flags
& IFF_ALLMULTI
) ||
114 (dev
->flags
& IFF_PROMISC
))
115 /* Force accept multicast packets */
118 /* Force reject multicat packets */
121 if (dev
->flags
& IFF_PROMISC
)
123 * Reject matches if promisc. Since CAM is
124 * shut off, should accept everything.
126 control
.s
.cam_mode
= 0;
128 /* Filter packets based on the CAM */
129 control
.s
.cam_mode
= 1;
132 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index
, interface
));
133 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index
, interface
),
134 gmx_cfg
.u64
& ~1ull);
136 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index
, interface
),
138 if (dev
->flags
& IFF_PROMISC
)
139 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
140 (index
, interface
), 0);
142 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
143 (index
, interface
), 1);
145 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index
, interface
),
151 * Set the hardware MAC address for a device
153 * @dev: Device to change the MAC address for
154 * @addr: Address structure to change it too. MAC address is addr + 2.
155 * Returns Zero on success
157 static int cvm_oct_common_set_mac_address(struct net_device
*dev
, void *addr
)
159 struct octeon_ethernet
*priv
= netdev_priv(dev
);
160 union cvmx_gmxx_prtx_cfg gmx_cfg
;
161 int interface
= INTERFACE(priv
->port
);
162 int index
= INDEX(priv
->port
);
164 memcpy(dev
->dev_addr
, addr
+ 2, 6);
167 && (cvmx_helper_interface_get_mode(interface
) !=
168 CVMX_HELPER_INTERFACE_MODE_SPI
)) {
172 for (i
= 0; i
< 6; i
++)
173 mac
= (mac
<< 8) | (uint64_t) (ptr
[i
+ 2]);
176 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index
, interface
));
177 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index
, interface
),
178 gmx_cfg
.u64
& ~1ull);
180 cvmx_write_csr(CVMX_GMXX_SMACX(index
, interface
), mac
);
181 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index
, interface
),
183 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index
, interface
),
185 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index
, interface
),
187 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index
, interface
),
189 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index
, interface
),
191 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index
, interface
),
193 cvm_oct_common_set_multicast_list(dev
);
194 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index
, interface
),
201 * Change the link MTU. Unimplemented
203 * @dev: Device to change
204 * @new_mtu: The new MTU
206 * Returns Zero on success
208 static int cvm_oct_common_change_mtu(struct net_device
*dev
, int new_mtu
)
210 struct octeon_ethernet
*priv
= netdev_priv(dev
);
211 int interface
= INTERFACE(priv
->port
);
212 int index
= INDEX(priv
->port
);
213 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
220 * Limit the MTU to make sure the ethernet packets are between
221 * 64 bytes and 65535 bytes.
223 if ((new_mtu
+ 14 + 4 + vlan_bytes
< 64)
224 || (new_mtu
+ 14 + 4 + vlan_bytes
> 65392)) {
225 pr_err("MTU must be between %d and %d.\n",
226 64 - 14 - 4 - vlan_bytes
, 65392 - 14 - 4 - vlan_bytes
);
232 && (cvmx_helper_interface_get_mode(interface
) !=
233 CVMX_HELPER_INTERFACE_MODE_SPI
)) {
234 /* Add ethernet header and FCS, and VLAN if configured. */
235 int max_packet
= new_mtu
+ 14 + 4 + vlan_bytes
;
237 if (OCTEON_IS_MODEL(OCTEON_CN3XXX
)
238 || OCTEON_IS_MODEL(OCTEON_CN58XX
)) {
239 /* Signal errors on packets larger than the MTU */
240 cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index
, interface
),
244 * Set the hardware to truncate packets larger
245 * than the MTU and smaller the 64 bytes.
247 union cvmx_pip_frm_len_chkx frm_len_chk
;
249 frm_len_chk
.s
.minlen
= 64;
250 frm_len_chk
.s
.maxlen
= max_packet
;
251 cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface
),
255 * Set the hardware to truncate packets larger than
256 * the MTU. The jabber register must be set to a
257 * multiple of 8 bytes, so round up.
259 cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index
, interface
),
260 (max_packet
+ 7) & ~7u);
266 * Per network device initialization
268 * @dev: Device to initialize
269 * Returns Zero on success
271 int cvm_oct_common_init(struct net_device
*dev
)
274 char mac
[8] = { 0x00, 0x00,
275 octeon_bootinfo
->mac_addr_base
[0],
276 octeon_bootinfo
->mac_addr_base
[1],
277 octeon_bootinfo
->mac_addr_base
[2],
278 octeon_bootinfo
->mac_addr_base
[3],
279 octeon_bootinfo
->mac_addr_base
[4],
280 octeon_bootinfo
->mac_addr_base
[5] + count
282 struct octeon_ethernet
*priv
= netdev_priv(dev
);
285 * Force the interface to use the POW send if always_use_pow
286 * was specified or it is in the pow send list.
288 if ((pow_send_group
!= -1)
289 && (always_use_pow
|| strstr(pow_send_list
, dev
->name
)))
292 if (priv
->queue
!= -1) {
293 dev
->hard_start_xmit
= cvm_oct_xmit
;
294 if (USE_HW_TCPUDP_CHECKSUM
)
295 dev
->features
|= NETIF_F_IP_CSUM
;
297 dev
->hard_start_xmit
= cvm_oct_xmit_pow
;
300 dev
->get_stats
= cvm_oct_common_get_stats
;
301 dev
->set_mac_address
= cvm_oct_common_set_mac_address
;
302 dev
->set_multicast_list
= cvm_oct_common_set_multicast_list
;
303 dev
->change_mtu
= cvm_oct_common_change_mtu
;
304 dev
->do_ioctl
= cvm_oct_ioctl
;
305 /* We do our own locking, Linux doesn't need to */
306 dev
->features
|= NETIF_F_LLTX
;
307 SET_ETHTOOL_OPS(dev
, &cvm_oct_ethtool_ops
);
308 #ifdef CONFIG_NET_POLL_CONTROLLER
309 dev
->poll_controller
= cvm_oct_poll_controller
;
312 cvm_oct_mdio_setup_device(dev
);
313 dev
->set_mac_address(dev
, mac
);
314 dev
->change_mtu(dev
, dev
->mtu
);
317 * Zero out stats for port so we won't mistakenly show
318 * counters from the bootloader.
320 memset(dev
->get_stats(dev
), 0, sizeof(struct net_device_stats
));
325 void cvm_oct_common_uninit(struct net_device
*dev
)
327 /* Currently nothing to do */