ata fixes for 6.9-rc4
- Add the mask_port_map parameter to the ahci driver. This is a follow-up to the recent snafu with the ASMedia controller and its virtual port hidding port-multiplier devices. As ASMedia confirmed that there is no way to determine if these slow-to-probe virtual ports are actually representing the ports of a port-multiplier devices, this new parameter allow masking ports to significantly speed up probing during system boot, resulting in shorter boot times. - A fix for an incorrect handling of a port unlock in ata_scsi_dev_rescan(). - Allow command duration limits to be detected for ACS-4 devices are there are such devices out in the field. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSRPv8tYSvhwAzJdzjdoc3SxdoYdgUCZho+/AAKCRDdoc3SxdoY dhm2AP49p/aAmpTGKYQjXwiQWH4JMR/ey9rZgdw0jjGtMYkdRQEA+aCLtWFKnENr 1E+lnTO+ef01BhJlk/FCK2VyOqCNxwM= =pDw+ -----END PGP SIGNATURE----- Merge tag 'ata-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux Pull ata fixes from Damien Le Moal: - Add the mask_port_map parameter to the ahci driver. This is a follow-up to the recent snafu with the ASMedia controller and its virtual port hidding port-multiplier devices. As ASMedia confirmed that there is no way to determine if these slow-to-probe virtual ports are actually representing the ports of a port-multiplier devices, this new parameter allow masking ports to significantly speed up probing during system boot, resulting in shorter boot times. - A fix for an incorrect handling of a port unlock in ata_scsi_dev_rescan(). - Allow command duration limits to be detected for ACS-4 devices are there are such devices out in the field. * tag 'ata-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux: ata: libata-core: Allow command duration limits detection for ACS-4 drives ata: libata-scsi: Fix ata_scsi_dev_rescan() error path ata: ahci: Add mask_port_map module parameter
This commit is contained in:
commit
7efd0a7403
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@ -666,6 +666,87 @@ static int mobile_lpm_policy = -1;
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module_param(mobile_lpm_policy, int, 0644);
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MODULE_PARM_DESC(mobile_lpm_policy, "Default LPM policy for mobile chipsets");
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static char *ahci_mask_port_map;
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module_param_named(mask_port_map, ahci_mask_port_map, charp, 0444);
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MODULE_PARM_DESC(mask_port_map,
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"32-bits port map masks to ignore controllers ports. "
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"Valid values are: "
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"\"<mask>\" to apply the same mask to all AHCI controller "
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"devices, and \"<pci_dev>=<mask>,<pci_dev>=<mask>,...\" to "
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"specify different masks for the controllers specified, "
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"where <pci_dev> is the PCI ID of an AHCI controller in the "
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"form \"domain:bus:dev.func\"");
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static void ahci_apply_port_map_mask(struct device *dev,
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struct ahci_host_priv *hpriv, char *mask_s)
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{
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unsigned int mask;
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if (kstrtouint(mask_s, 0, &mask)) {
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dev_err(dev, "Invalid port map mask\n");
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return;
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}
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hpriv->mask_port_map = mask;
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}
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static void ahci_get_port_map_mask(struct device *dev,
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struct ahci_host_priv *hpriv)
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{
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char *param, *end, *str, *mask_s;
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char *name;
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if (!strlen(ahci_mask_port_map))
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return;
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str = kstrdup(ahci_mask_port_map, GFP_KERNEL);
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if (!str)
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return;
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/* Handle single mask case */
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if (!strchr(str, '=')) {
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ahci_apply_port_map_mask(dev, hpriv, str);
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goto free;
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}
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/*
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* Mask list case: parse the parameter to apply the mask only if
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* the device name matches.
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*/
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param = str;
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end = param + strlen(param);
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while (param && param < end && *param) {
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name = param;
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param = strchr(name, '=');
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if (!param)
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break;
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*param = '\0';
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param++;
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if (param >= end)
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break;
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if (strcmp(dev_name(dev), name) != 0) {
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param = strchr(param, ',');
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if (param)
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param++;
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continue;
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}
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mask_s = param;
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param = strchr(mask_s, ',');
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if (param) {
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*param = '\0';
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param++;
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}
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ahci_apply_port_map_mask(dev, hpriv, mask_s);
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}
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free:
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kfree(str);
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}
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static void ahci_pci_save_initial_config(struct pci_dev *pdev,
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struct ahci_host_priv *hpriv)
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{
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@ -688,6 +769,10 @@ static void ahci_pci_save_initial_config(struct pci_dev *pdev,
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"Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n");
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}
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/* Handle port map masks passed as module parameter. */
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if (ahci_mask_port_map)
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ahci_get_port_map_mask(&pdev->dev, hpriv);
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ahci_save_initial_config(&pdev->dev, hpriv);
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}
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@ -2539,7 +2539,7 @@ static void ata_dev_config_cdl(struct ata_device *dev)
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bool cdl_enabled;
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u64 val;
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if (ata_id_major_version(dev->id) < 12)
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if (ata_id_major_version(dev->id) < 11)
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goto not_supported;
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if (!ata_log_supported(dev, ATA_LOG_IDENTIFY_DEVICE) ||
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@ -4745,7 +4745,7 @@ void ata_scsi_dev_rescan(struct work_struct *work)
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* bail out.
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*/
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if (ap->pflags & ATA_PFLAG_SUSPENDED)
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goto unlock;
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goto unlock_ap;
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if (!sdev)
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continue;
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@ -4758,7 +4758,7 @@ void ata_scsi_dev_rescan(struct work_struct *work)
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if (do_resume) {
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ret = scsi_resume_device(sdev);
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if (ret == -EWOULDBLOCK)
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goto unlock;
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goto unlock_scan;
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dev->flags &= ~ATA_DFLAG_RESUMING;
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}
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ret = scsi_rescan_device(sdev);
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@ -4766,12 +4766,13 @@ void ata_scsi_dev_rescan(struct work_struct *work)
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spin_lock_irqsave(ap->lock, flags);
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if (ret)
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goto unlock;
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goto unlock_ap;
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}
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}
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unlock:
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unlock_ap:
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spin_unlock_irqrestore(ap->lock, flags);
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unlock_scan:
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mutex_unlock(&ap->scsi_scan_mutex);
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/* Reschedule with a delay if scsi_rescan_device() returned an error */
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