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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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343 lines
9.3 KiB
C
343 lines
9.3 KiB
C
/*
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* Copyright (c) 2000-2001 Adaptec Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* String handling code courtesy of Gerard Roudier's <groudier@club-internet.fr>
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* sym driver.
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*
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* $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_proc.c#29 $
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*/
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#include "aic7xxx_osm.h"
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#include "aic7xxx_inline.h"
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#include "aic7xxx_93cx6.h"
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static void ahc_dump_target_state(struct ahc_softc *ahc,
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struct seq_file *m,
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u_int our_id, char channel,
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u_int target_id, u_int target_offset);
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static void ahc_dump_device_state(struct seq_file *m,
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struct scsi_device *dev);
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/*
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* Table of syncrates that don't follow the "divisible by 4"
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* rule. This table will be expanded in future SCSI specs.
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*/
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static const struct {
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u_int period_factor;
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u_int period; /* in 100ths of ns */
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} scsi_syncrates[] = {
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{ 0x08, 625 }, /* FAST-160 */
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{ 0x09, 1250 }, /* FAST-80 */
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{ 0x0a, 2500 }, /* FAST-40 40MHz */
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{ 0x0b, 3030 }, /* FAST-40 33MHz */
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{ 0x0c, 5000 } /* FAST-20 */
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};
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/*
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* Return the frequency in kHz corresponding to the given
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* sync period factor.
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*/
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static u_int
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ahc_calc_syncsrate(u_int period_factor)
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{
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int i;
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/* See if the period is in the "exception" table */
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for (i = 0; i < ARRAY_SIZE(scsi_syncrates); i++) {
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if (period_factor == scsi_syncrates[i].period_factor) {
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/* Period in kHz */
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return (100000000 / scsi_syncrates[i].period);
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}
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}
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/*
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* Wasn't in the table, so use the standard
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* 4 times conversion.
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*/
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return (10000000 / (period_factor * 4 * 10));
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}
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static void
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ahc_format_transinfo(struct seq_file *m, struct ahc_transinfo *tinfo)
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{
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u_int speed;
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u_int freq;
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u_int mb;
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speed = 3300;
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freq = 0;
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if (tinfo->offset != 0) {
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freq = ahc_calc_syncsrate(tinfo->period);
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speed = freq;
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}
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speed *= (0x01 << tinfo->width);
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mb = speed / 1000;
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if (mb > 0)
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seq_printf(m, "%d.%03dMB/s transfers", mb, speed % 1000);
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else
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seq_printf(m, "%dKB/s transfers", speed);
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if (freq != 0) {
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seq_printf(m, " (%d.%03dMHz%s, offset %d",
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freq / 1000, freq % 1000,
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(tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
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? " DT" : "", tinfo->offset);
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}
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if (tinfo->width > 0) {
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if (freq != 0) {
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seq_printf(m, ", ");
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} else {
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seq_printf(m, " (");
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}
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seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width));
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} else if (freq != 0) {
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seq_printf(m, ")");
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}
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seq_printf(m, "\n");
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}
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static void
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ahc_dump_target_state(struct ahc_softc *ahc, struct seq_file *m,
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u_int our_id, char channel, u_int target_id,
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u_int target_offset)
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{
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struct scsi_target *starget;
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struct ahc_initiator_tinfo *tinfo;
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struct ahc_tmode_tstate *tstate;
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int lun;
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tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
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target_id, &tstate);
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if ((ahc->features & AHC_TWIN) != 0)
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seq_printf(m, "Channel %c ", channel);
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seq_printf(m, "Target %d Negotiation Settings\n", target_id);
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seq_printf(m, "\tUser: ");
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ahc_format_transinfo(m, &tinfo->user);
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starget = ahc->platform_data->starget[target_offset];
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if (!starget)
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return;
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seq_printf(m, "\tGoal: ");
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ahc_format_transinfo(m, &tinfo->goal);
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seq_printf(m, "\tCurr: ");
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ahc_format_transinfo(m, &tinfo->curr);
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for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
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struct scsi_device *sdev;
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sdev = scsi_device_lookup_by_target(starget, lun);
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if (sdev == NULL)
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continue;
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ahc_dump_device_state(m, sdev);
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}
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}
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static void
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ahc_dump_device_state(struct seq_file *m, struct scsi_device *sdev)
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{
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struct ahc_linux_device *dev = scsi_transport_device_data(sdev);
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seq_printf(m, "\tChannel %c Target %d Lun %d Settings\n",
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sdev->sdev_target->channel + 'A',
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sdev->sdev_target->id, sdev->lun);
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seq_printf(m, "\t\tCommands Queued %ld\n", dev->commands_issued);
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seq_printf(m, "\t\tCommands Active %d\n", dev->active);
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seq_printf(m, "\t\tCommand Openings %d\n", dev->openings);
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seq_printf(m, "\t\tMax Tagged Openings %d\n", dev->maxtags);
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seq_printf(m, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
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}
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int
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ahc_proc_write_seeprom(struct Scsi_Host *shost, char *buffer, int length)
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{
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struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
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struct seeprom_descriptor sd;
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int have_seeprom;
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u_long s;
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int paused;
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int written;
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/* Default to failure. */
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written = -EINVAL;
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ahc_lock(ahc, &s);
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paused = ahc_is_paused(ahc);
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if (!paused)
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ahc_pause(ahc);
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if (length != sizeof(struct seeprom_config)) {
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printk("ahc_proc_write_seeprom: incorrect buffer size\n");
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goto done;
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}
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have_seeprom = ahc_verify_cksum((struct seeprom_config*)buffer);
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if (have_seeprom == 0) {
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printk("ahc_proc_write_seeprom: cksum verification failed\n");
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goto done;
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}
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sd.sd_ahc = ahc;
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#if AHC_PCI_CONFIG > 0
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if ((ahc->chip & AHC_PCI) != 0) {
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sd.sd_control_offset = SEECTL;
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sd.sd_status_offset = SEECTL;
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sd.sd_dataout_offset = SEECTL;
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if (ahc->flags & AHC_LARGE_SEEPROM)
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sd.sd_chip = C56_66;
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else
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sd.sd_chip = C46;
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sd.sd_MS = SEEMS;
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sd.sd_RDY = SEERDY;
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sd.sd_CS = SEECS;
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sd.sd_CK = SEECK;
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sd.sd_DO = SEEDO;
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sd.sd_DI = SEEDI;
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have_seeprom = ahc_acquire_seeprom(ahc, &sd);
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} else
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#endif
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if ((ahc->chip & AHC_VL) != 0) {
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sd.sd_control_offset = SEECTL_2840;
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sd.sd_status_offset = STATUS_2840;
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sd.sd_dataout_offset = STATUS_2840;
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sd.sd_chip = C46;
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sd.sd_MS = 0;
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sd.sd_RDY = EEPROM_TF;
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sd.sd_CS = CS_2840;
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sd.sd_CK = CK_2840;
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sd.sd_DO = DO_2840;
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sd.sd_DI = DI_2840;
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have_seeprom = TRUE;
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} else {
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printk("ahc_proc_write_seeprom: unsupported adapter type\n");
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goto done;
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}
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if (!have_seeprom) {
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printk("ahc_proc_write_seeprom: No Serial EEPROM\n");
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goto done;
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} else {
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u_int start_addr;
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if (ahc->seep_config == NULL) {
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ahc->seep_config = kmalloc(sizeof(*ahc->seep_config), GFP_ATOMIC);
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if (ahc->seep_config == NULL) {
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printk("aic7xxx: Unable to allocate serial "
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"eeprom buffer. Write failing\n");
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goto done;
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}
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}
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printk("aic7xxx: Writing Serial EEPROM\n");
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start_addr = 32 * (ahc->channel - 'A');
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ahc_write_seeprom(&sd, (u_int16_t *)buffer, start_addr,
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sizeof(struct seeprom_config)/2);
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ahc_read_seeprom(&sd, (uint16_t *)ahc->seep_config,
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start_addr, sizeof(struct seeprom_config)/2);
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#if AHC_PCI_CONFIG > 0
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if ((ahc->chip & AHC_VL) == 0)
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ahc_release_seeprom(&sd);
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#endif
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written = length;
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}
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done:
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if (!paused)
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ahc_unpause(ahc);
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ahc_unlock(ahc, &s);
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return (written);
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}
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/*
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* Return information to handle /proc support for the driver.
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*/
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int
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ahc_linux_show_info(struct seq_file *m, struct Scsi_Host *shost)
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{
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struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
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char ahc_info[256];
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u_int max_targ;
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u_int i;
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seq_printf(m, "Adaptec AIC7xxx driver version: %s\n",
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AIC7XXX_DRIVER_VERSION);
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seq_printf(m, "%s\n", ahc->description);
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ahc_controller_info(ahc, ahc_info);
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seq_printf(m, "%s\n", ahc_info);
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seq_printf(m, "Allocated SCBs: %d, SG List Length: %d\n\n",
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ahc->scb_data->numscbs, AHC_NSEG);
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if (ahc->seep_config == NULL)
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seq_printf(m, "No Serial EEPROM\n");
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else {
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seq_printf(m, "Serial EEPROM:\n");
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for (i = 0; i < sizeof(*ahc->seep_config)/2; i++) {
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if (((i % 8) == 0) && (i != 0)) {
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seq_printf(m, "\n");
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}
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seq_printf(m, "0x%.4x ",
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((uint16_t*)ahc->seep_config)[i]);
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}
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seq_printf(m, "\n");
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}
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seq_printf(m, "\n");
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max_targ = 16;
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if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
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max_targ = 8;
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for (i = 0; i < max_targ; i++) {
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u_int our_id;
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u_int target_id;
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char channel;
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channel = 'A';
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our_id = ahc->our_id;
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target_id = i;
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if (i > 7 && (ahc->features & AHC_TWIN) != 0) {
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channel = 'B';
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our_id = ahc->our_id_b;
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target_id = i % 8;
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}
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ahc_dump_target_state(ahc, m, our_id,
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channel, target_id, i);
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}
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return 0;
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}
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