1 /**********************************************************************
4 * Contact: support@cavium.com
5 * Please include "LiquidIO" in the subject.
7 * Copyright (c) 2003-2016 Cavium, Inc.
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
18 **********************************************************************/
19 #include <linux/pci.h>
20 #include <linux/netdevice.h>
21 #include "liquidio_common.h"
22 #include "octeon_droq.h"
23 #include "octeon_iq.h"
24 #include "response_manager.h"
25 #include "octeon_device.h"
26 #include "octeon_nic.h"
27 #include "octeon_main.h"
30 octeon_alloc_soft_command_resp(struct octeon_device *oct,
31 union octeon_instr_64B *cmd,
34 struct octeon_soft_command *sc;
35 struct octeon_instr_ih3 *ih3;
36 struct octeon_instr_ih2 *ih2;
37 struct octeon_instr_irh *irh;
38 struct octeon_instr_rdp *rdp;
40 sc = (struct octeon_soft_command *)
41 octeon_alloc_soft_command(oct, 0, rdatasize, 0);
46 /* Copy existing command structure into the soft command */
47 memcpy(&sc->cmd, cmd, sizeof(union octeon_instr_64B));
49 /* Add in the response related fields. Opcode and Param are already
52 if (OCTEON_CN23XX_PF(oct) || OCTEON_CN23XX_VF(oct)) {
53 ih3 = (struct octeon_instr_ih3 *)&sc->cmd.cmd3.ih3;
54 rdp = (struct octeon_instr_rdp *)&sc->cmd.cmd3.rdp;
55 irh = (struct octeon_instr_irh *)&sc->cmd.cmd3.irh;
56 /*pkiih3 + irh + ossp[0] + ossp[1] + rdp + rptr = 40 bytes */
57 ih3->fsz = LIO_SOFTCMDRESP_IH3;
59 ih2 = (struct octeon_instr_ih2 *)&sc->cmd.cmd2.ih2;
60 rdp = (struct octeon_instr_rdp *)&sc->cmd.cmd2.rdp;
61 irh = (struct octeon_instr_irh *)&sc->cmd.cmd2.irh;
62 /* irh + ossp[0] + ossp[1] + rdp + rptr = 40 bytes */
63 ih2->fsz = LIO_SOFTCMDRESP_IH2;
66 irh->rflag = 1; /* a response is required */
68 rdp->pcie_port = oct->pcie_port;
69 rdp->rlen = rdatasize;
71 *sc->status_word = COMPLETION_WORD_INIT;
73 if (OCTEON_CN23XX_PF(oct) || OCTEON_CN23XX_VF(oct))
74 sc->cmd.cmd3.rptr = sc->dmarptr;
76 sc->cmd.cmd2.rptr = sc->dmarptr;
79 sc->timeout = jiffies + sc->wait_time;
84 int octnet_send_nic_data_pkt(struct octeon_device *oct,
85 struct octnic_data_pkt *ndata)
87 int ring_doorbell = 1;
89 return octeon_send_command(oct, ndata->q_no, ring_doorbell, &ndata->cmd,
90 ndata->buf, ndata->datasize,
94 static void octnet_link_ctrl_callback(struct octeon_device *oct,
98 struct octeon_soft_command *sc = (struct octeon_soft_command *)sc_ptr;
99 struct octnic_ctrl_pkt *nctrl;
101 nctrl = (struct octnic_ctrl_pkt *)sc->ctxptr;
103 /* Call the callback function if status is zero (meaning OK) or status
104 * contains a firmware status code bigger than zero (meaning the
105 * firmware is reporting an error).
106 * If no response was expected, status is OK if the command was posted
109 if ((!status || status > FIRMWARE_STATUS_CODE(0)) && nctrl->cb_fn) {
110 nctrl->status = status;
114 octeon_free_soft_command(oct, sc);
117 static inline struct octeon_soft_command
118 *octnic_alloc_ctrl_pkt_sc(struct octeon_device *oct,
119 struct octnic_ctrl_pkt *nctrl)
121 struct octeon_soft_command *sc = NULL;
124 u32 uddsize = 0, datasize = 0;
126 uddsize = (u32)(nctrl->ncmd.s.more * 8);
128 datasize = OCTNET_CMD_SIZE + uddsize;
129 rdatasize = (nctrl->wait_time) ? 16 : 0;
131 sc = (struct octeon_soft_command *)
132 octeon_alloc_soft_command(oct, datasize, rdatasize,
133 sizeof(struct octnic_ctrl_pkt));
138 memcpy(sc->ctxptr, nctrl, sizeof(struct octnic_ctrl_pkt));
140 data = (u8 *)sc->virtdptr;
142 memcpy(data, &nctrl->ncmd, OCTNET_CMD_SIZE);
144 octeon_swap_8B_data((u64 *)data, (OCTNET_CMD_SIZE >> 3));
147 /* Endian-Swap for UDD should have been done by caller. */
148 memcpy(data + OCTNET_CMD_SIZE, nctrl->udd, uddsize);
151 sc->iq_no = (u32)nctrl->iq_no;
153 octeon_prepare_soft_command(oct, sc, OPCODE_NIC, OPCODE_NIC_CMD,
156 sc->callback = octnet_link_ctrl_callback;
157 sc->callback_arg = sc;
158 sc->wait_time = nctrl->wait_time;
164 octnet_send_nic_ctrl_pkt(struct octeon_device *oct,
165 struct octnic_ctrl_pkt *nctrl)
168 struct octeon_soft_command *sc = NULL;
170 spin_lock_bh(&oct->cmd_resp_wqlock);
171 /* Allow only rx ctrl command to stop traffic on the chip
172 * during offline operations
174 if ((oct->cmd_resp_state == OCT_DRV_OFFLINE) &&
175 (nctrl->ncmd.s.cmd != OCTNET_CMD_RX_CTL)) {
176 spin_unlock_bh(&oct->cmd_resp_wqlock);
177 dev_err(&oct->pci_dev->dev,
178 "%s cmd:%d not processed since driver offline\n",
179 __func__, nctrl->ncmd.s.cmd);
183 sc = octnic_alloc_ctrl_pkt_sc(oct, nctrl);
185 dev_err(&oct->pci_dev->dev, "%s soft command alloc failed\n",
187 spin_unlock_bh(&oct->cmd_resp_wqlock);
191 retval = octeon_send_soft_command(oct, sc);
192 if (retval == IQ_SEND_FAILED) {
193 octeon_free_soft_command(oct, sc);
194 dev_err(&oct->pci_dev->dev, "%s pf_num:%d soft command:%d send failed status: %x\n",
195 __func__, oct->pf_num, nctrl->ncmd.s.cmd, retval);
196 spin_unlock_bh(&oct->cmd_resp_wqlock);
200 spin_unlock_bh(&oct->cmd_resp_wqlock);