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![Bradley Grove](/assets/img/avatar_default.png)
Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
524 lines
14 KiB
C
524 lines
14 KiB
C
/*
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* linux/drivers/scsi/esas2r/esas2r_vda.c
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* esas2r driver VDA firmware interface functions
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*
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* Copyright (c) 2001-2013 ATTO Technology, Inc.
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* (mailto:linuxdrivers@attotech.com)
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*/
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* NO WARRANTY
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* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
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* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
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* solely responsible for determining the appropriateness of using and
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* distributing the Program and assumes all risks associated with its
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* exercise of rights under this Agreement, including but not limited to
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* the risks and costs of program errors, damage to or loss of data,
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* programs or equipment, and unavailability or interruption of operations.
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*
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* DISCLAIMER OF LIABILITY
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* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
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* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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#include "esas2r.h"
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static u8 esas2r_vdaioctl_versions[] = {
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ATTO_VDA_VER_UNSUPPORTED,
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ATTO_VDA_FLASH_VER,
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ATTO_VDA_VER_UNSUPPORTED,
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ATTO_VDA_VER_UNSUPPORTED,
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ATTO_VDA_CLI_VER,
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ATTO_VDA_VER_UNSUPPORTED,
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ATTO_VDA_CFG_VER,
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ATTO_VDA_MGT_VER,
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ATTO_VDA_GSV_VER
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};
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static void clear_vda_request(struct esas2r_request *rq);
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static void esas2r_complete_vda_ioctl(struct esas2r_adapter *a,
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struct esas2r_request *rq);
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/* Prepare a VDA IOCTL request to be sent to the firmware. */
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bool esas2r_process_vda_ioctl(struct esas2r_adapter *a,
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struct atto_ioctl_vda *vi,
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struct esas2r_request *rq,
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struct esas2r_sg_context *sgc)
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{
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u32 datalen = 0;
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struct atto_vda_sge *firstsg = NULL;
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u8 vercnt = (u8)ARRAY_SIZE(esas2r_vdaioctl_versions);
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vi->status = ATTO_STS_SUCCESS;
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vi->vda_status = RS_PENDING;
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if (vi->function >= vercnt) {
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vi->status = ATTO_STS_INV_FUNC;
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return false;
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}
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if (vi->version > esas2r_vdaioctl_versions[vi->function]) {
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vi->status = ATTO_STS_INV_VERSION;
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return false;
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}
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if (test_bit(AF_DEGRADED_MODE, &a->flags)) {
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vi->status = ATTO_STS_DEGRADED;
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return false;
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}
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if (vi->function != VDA_FUNC_SCSI)
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clear_vda_request(rq);
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rq->vrq->scsi.function = vi->function;
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rq->interrupt_cb = esas2r_complete_vda_ioctl;
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rq->interrupt_cx = vi;
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switch (vi->function) {
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case VDA_FUNC_FLASH:
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if (vi->cmd.flash.sub_func != VDA_FLASH_FREAD
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&& vi->cmd.flash.sub_func != VDA_FLASH_FWRITE
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&& vi->cmd.flash.sub_func != VDA_FLASH_FINFO) {
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vi->status = ATTO_STS_INV_FUNC;
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return false;
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}
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if (vi->cmd.flash.sub_func != VDA_FLASH_FINFO)
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datalen = vi->data_length;
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rq->vrq->flash.length = cpu_to_le32(datalen);
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rq->vrq->flash.sub_func = vi->cmd.flash.sub_func;
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memcpy(rq->vrq->flash.data.file.file_name,
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vi->cmd.flash.data.file.file_name,
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sizeof(vi->cmd.flash.data.file.file_name));
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firstsg = rq->vrq->flash.data.file.sge;
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break;
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case VDA_FUNC_CLI:
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datalen = vi->data_length;
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rq->vrq->cli.cmd_rsp_len =
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cpu_to_le32(vi->cmd.cli.cmd_rsp_len);
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rq->vrq->cli.length = cpu_to_le32(datalen);
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firstsg = rq->vrq->cli.sge;
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break;
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case VDA_FUNC_MGT:
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{
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u8 *cmdcurr_offset = sgc->cur_offset
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- offsetof(struct atto_ioctl_vda, data)
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+ offsetof(struct atto_ioctl_vda, cmd)
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+ offsetof(struct atto_ioctl_vda_mgt_cmd,
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data);
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/*
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* build the data payload SGL here first since
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* esas2r_sgc_init() will modify the S/G list offset for the
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* management SGL (which is built below where the data SGL is
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* usually built).
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*/
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if (vi->data_length) {
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u32 payldlen = 0;
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if (vi->cmd.mgt.mgt_func == VDAMGT_DEV_HEALTH_REQ
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|| vi->cmd.mgt.mgt_func == VDAMGT_DEV_METRICS) {
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rq->vrq->mgt.payld_sglst_offset =
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(u8)offsetof(struct atto_vda_mgmt_req,
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payld_sge);
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payldlen = vi->data_length;
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datalen = vi->cmd.mgt.data_length;
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} else if (vi->cmd.mgt.mgt_func == VDAMGT_DEV_INFO2
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|| vi->cmd.mgt.mgt_func ==
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VDAMGT_DEV_INFO2_BYADDR) {
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datalen = vi->data_length;
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cmdcurr_offset = sgc->cur_offset;
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} else {
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vi->status = ATTO_STS_INV_PARAM;
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return false;
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}
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/* Setup the length so building the payload SGL works */
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rq->vrq->mgt.length = cpu_to_le32(datalen);
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if (payldlen) {
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rq->vrq->mgt.payld_length =
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cpu_to_le32(payldlen);
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esas2r_sgc_init(sgc, a, rq,
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rq->vrq->mgt.payld_sge);
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sgc->length = payldlen;
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if (!esas2r_build_sg_list(a, rq, sgc)) {
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vi->status = ATTO_STS_OUT_OF_RSRC;
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return false;
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}
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}
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} else {
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datalen = vi->cmd.mgt.data_length;
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rq->vrq->mgt.length = cpu_to_le32(datalen);
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}
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/*
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* Now that the payload SGL is built, if any, setup to build
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* the management SGL.
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*/
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firstsg = rq->vrq->mgt.sge;
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sgc->cur_offset = cmdcurr_offset;
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/* Finish initializing the management request. */
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rq->vrq->mgt.mgt_func = vi->cmd.mgt.mgt_func;
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rq->vrq->mgt.scan_generation = vi->cmd.mgt.scan_generation;
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rq->vrq->mgt.dev_index =
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cpu_to_le32(vi->cmd.mgt.dev_index);
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esas2r_nuxi_mgt_data(rq->vrq->mgt.mgt_func, &vi->cmd.mgt.data);
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break;
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}
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case VDA_FUNC_CFG:
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if (vi->data_length
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|| vi->cmd.cfg.data_length == 0) {
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vi->status = ATTO_STS_INV_PARAM;
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return false;
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}
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if (vi->cmd.cfg.cfg_func == VDA_CFG_INIT) {
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vi->status = ATTO_STS_INV_FUNC;
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return false;
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}
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rq->vrq->cfg.sub_func = vi->cmd.cfg.cfg_func;
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rq->vrq->cfg.length = cpu_to_le32(vi->cmd.cfg.data_length);
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if (vi->cmd.cfg.cfg_func == VDA_CFG_GET_INIT) {
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memcpy(&rq->vrq->cfg.data,
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&vi->cmd.cfg.data,
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vi->cmd.cfg.data_length);
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esas2r_nuxi_cfg_data(rq->vrq->cfg.sub_func,
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&rq->vrq->cfg.data);
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} else {
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vi->status = ATTO_STS_INV_FUNC;
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return false;
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}
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break;
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case VDA_FUNC_GSV:
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vi->cmd.gsv.rsp_len = vercnt;
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memcpy(vi->cmd.gsv.version_info, esas2r_vdaioctl_versions,
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vercnt);
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vi->vda_status = RS_SUCCESS;
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break;
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default:
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vi->status = ATTO_STS_INV_FUNC;
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return false;
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}
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if (datalen) {
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esas2r_sgc_init(sgc, a, rq, firstsg);
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sgc->length = datalen;
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if (!esas2r_build_sg_list(a, rq, sgc)) {
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vi->status = ATTO_STS_OUT_OF_RSRC;
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return false;
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}
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}
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esas2r_start_request(a, rq);
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return true;
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}
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static void esas2r_complete_vda_ioctl(struct esas2r_adapter *a,
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struct esas2r_request *rq)
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{
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struct atto_ioctl_vda *vi = (struct atto_ioctl_vda *)rq->interrupt_cx;
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vi->vda_status = rq->req_stat;
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switch (vi->function) {
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case VDA_FUNC_FLASH:
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if (vi->cmd.flash.sub_func == VDA_FLASH_FINFO
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|| vi->cmd.flash.sub_func == VDA_FLASH_FREAD)
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vi->cmd.flash.data.file.file_size =
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le32_to_cpu(rq->func_rsp.flash_rsp.file_size);
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break;
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case VDA_FUNC_MGT:
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vi->cmd.mgt.scan_generation =
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rq->func_rsp.mgt_rsp.scan_generation;
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vi->cmd.mgt.dev_index = le16_to_cpu(
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rq->func_rsp.mgt_rsp.dev_index);
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if (vi->data_length == 0)
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vi->cmd.mgt.data_length =
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le32_to_cpu(rq->func_rsp.mgt_rsp.length);
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esas2r_nuxi_mgt_data(rq->vrq->mgt.mgt_func, &vi->cmd.mgt.data);
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break;
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case VDA_FUNC_CFG:
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if (vi->cmd.cfg.cfg_func == VDA_CFG_GET_INIT) {
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struct atto_ioctl_vda_cfg_cmd *cfg = &vi->cmd.cfg;
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struct atto_vda_cfg_rsp *rsp = &rq->func_rsp.cfg_rsp;
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char buf[sizeof(cfg->data.init.fw_release) + 1];
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cfg->data_length =
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cpu_to_le32(sizeof(struct atto_vda_cfg_init));
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cfg->data.init.vda_version =
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le32_to_cpu(rsp->vda_version);
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cfg->data.init.fw_build = rsp->fw_build;
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snprintf(buf, sizeof(buf), "%1.1u.%2.2u",
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(int)LOBYTE(le16_to_cpu(rsp->fw_release)),
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(int)HIBYTE(le16_to_cpu(rsp->fw_release)));
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memcpy(&cfg->data.init.fw_release, buf,
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sizeof(cfg->data.init.fw_release));
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if (LOWORD(LOBYTE(cfg->data.init.fw_build)) == 'A')
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cfg->data.init.fw_version =
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cfg->data.init.fw_build;
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else
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cfg->data.init.fw_version =
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cfg->data.init.fw_release;
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} else {
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esas2r_nuxi_cfg_data(rq->vrq->cfg.sub_func,
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&vi->cmd.cfg.data);
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}
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break;
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case VDA_FUNC_CLI:
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vi->cmd.cli.cmd_rsp_len =
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le32_to_cpu(rq->func_rsp.cli_rsp.cmd_rsp_len);
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break;
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default:
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break;
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}
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}
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/* Build a flash VDA request. */
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void esas2r_build_flash_req(struct esas2r_adapter *a,
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struct esas2r_request *rq,
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u8 sub_func,
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u8 cksum,
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u32 addr,
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u32 length)
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{
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struct atto_vda_flash_req *vrq = &rq->vrq->flash;
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clear_vda_request(rq);
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rq->vrq->scsi.function = VDA_FUNC_FLASH;
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if (sub_func == VDA_FLASH_BEGINW
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|| sub_func == VDA_FLASH_WRITE
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|| sub_func == VDA_FLASH_READ)
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vrq->sg_list_offset = (u8)offsetof(struct atto_vda_flash_req,
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data.sge);
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vrq->length = cpu_to_le32(length);
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vrq->flash_addr = cpu_to_le32(addr);
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vrq->checksum = cksum;
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vrq->sub_func = sub_func;
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}
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/* Build a VDA management request. */
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void esas2r_build_mgt_req(struct esas2r_adapter *a,
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struct esas2r_request *rq,
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u8 sub_func,
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u8 scan_gen,
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u16 dev_index,
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u32 length,
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void *data)
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{
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struct atto_vda_mgmt_req *vrq = &rq->vrq->mgt;
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clear_vda_request(rq);
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rq->vrq->scsi.function = VDA_FUNC_MGT;
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vrq->mgt_func = sub_func;
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vrq->scan_generation = scan_gen;
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vrq->dev_index = cpu_to_le16(dev_index);
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vrq->length = cpu_to_le32(length);
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if (vrq->length) {
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if (test_bit(AF_LEGACY_SGE_MODE, &a->flags)) {
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vrq->sg_list_offset = (u8)offsetof(
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struct atto_vda_mgmt_req, sge);
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vrq->sge[0].length = cpu_to_le32(SGE_LAST | length);
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vrq->sge[0].address = cpu_to_le64(
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rq->vrq_md->phys_addr +
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sizeof(union atto_vda_req));
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} else {
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vrq->sg_list_offset = (u8)offsetof(
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struct atto_vda_mgmt_req, prde);
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vrq->prde[0].ctl_len = cpu_to_le32(length);
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vrq->prde[0].address = cpu_to_le64(
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rq->vrq_md->phys_addr +
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sizeof(union atto_vda_req));
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}
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}
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if (data) {
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esas2r_nuxi_mgt_data(sub_func, data);
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memcpy(&rq->vda_rsp_data->mgt_data.data.bytes[0], data,
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length);
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}
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}
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/* Build a VDA asyncronous event (AE) request. */
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void esas2r_build_ae_req(struct esas2r_adapter *a, struct esas2r_request *rq)
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{
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struct atto_vda_ae_req *vrq = &rq->vrq->ae;
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clear_vda_request(rq);
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rq->vrq->scsi.function = VDA_FUNC_AE;
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vrq->length = cpu_to_le32(sizeof(struct atto_vda_ae_data));
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if (test_bit(AF_LEGACY_SGE_MODE, &a->flags)) {
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vrq->sg_list_offset =
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(u8)offsetof(struct atto_vda_ae_req, sge);
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vrq->sge[0].length = cpu_to_le32(SGE_LAST | vrq->length);
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vrq->sge[0].address = cpu_to_le64(
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rq->vrq_md->phys_addr +
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sizeof(union atto_vda_req));
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} else {
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vrq->sg_list_offset = (u8)offsetof(struct atto_vda_ae_req,
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prde);
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vrq->prde[0].ctl_len = cpu_to_le32(vrq->length);
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vrq->prde[0].address = cpu_to_le64(
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rq->vrq_md->phys_addr +
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sizeof(union atto_vda_req));
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}
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}
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/* Build a VDA CLI request. */
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void esas2r_build_cli_req(struct esas2r_adapter *a,
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struct esas2r_request *rq,
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u32 length,
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u32 cmd_rsp_len)
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{
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struct atto_vda_cli_req *vrq = &rq->vrq->cli;
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clear_vda_request(rq);
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rq->vrq->scsi.function = VDA_FUNC_CLI;
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vrq->length = cpu_to_le32(length);
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vrq->cmd_rsp_len = cpu_to_le32(cmd_rsp_len);
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vrq->sg_list_offset = (u8)offsetof(struct atto_vda_cli_req, sge);
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}
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/* Build a VDA IOCTL request. */
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void esas2r_build_ioctl_req(struct esas2r_adapter *a,
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struct esas2r_request *rq,
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u32 length,
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u8 sub_func)
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{
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struct atto_vda_ioctl_req *vrq = &rq->vrq->ioctl;
|
|
|
|
clear_vda_request(rq);
|
|
|
|
rq->vrq->scsi.function = VDA_FUNC_IOCTL;
|
|
|
|
vrq->length = cpu_to_le32(length);
|
|
vrq->sub_func = sub_func;
|
|
vrq->sg_list_offset = (u8)offsetof(struct atto_vda_ioctl_req, sge);
|
|
}
|
|
|
|
/* Build a VDA configuration request. */
|
|
void esas2r_build_cfg_req(struct esas2r_adapter *a,
|
|
struct esas2r_request *rq,
|
|
u8 sub_func,
|
|
u32 length,
|
|
void *data)
|
|
{
|
|
struct atto_vda_cfg_req *vrq = &rq->vrq->cfg;
|
|
|
|
clear_vda_request(rq);
|
|
|
|
rq->vrq->scsi.function = VDA_FUNC_CFG;
|
|
|
|
vrq->sub_func = sub_func;
|
|
vrq->length = cpu_to_le32(length);
|
|
|
|
if (data) {
|
|
esas2r_nuxi_cfg_data(sub_func, data);
|
|
|
|
memcpy(&vrq->data, data, length);
|
|
}
|
|
}
|
|
|
|
static void clear_vda_request(struct esas2r_request *rq)
|
|
{
|
|
u32 handle = rq->vrq->scsi.handle;
|
|
|
|
memset(rq->vrq, 0, sizeof(*rq->vrq));
|
|
|
|
rq->vrq->scsi.handle = handle;
|
|
|
|
rq->req_stat = RS_PENDING;
|
|
|
|
/* since the data buffer is separate clear that too */
|
|
|
|
memset(rq->data_buf, 0, ESAS2R_DATA_BUF_LEN);
|
|
|
|
/*
|
|
* Setup next and prev pointer in case the request is not going through
|
|
* esas2r_start_request().
|
|
*/
|
|
|
|
INIT_LIST_HEAD(&rq->req_list);
|
|
}
|