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Fix nda(4) PCIe link status output
Differentiate between PCI Express Endpoint devices and Root Complex Integrated Endpoints in the nda driver. The Link Status and Capability registers are not valid for Integrated Endpoints and should not be displayed. The bhyve emulated NVMe device will advertise as being an Integrated Endpoint. Reviewed by: imp Approved byL imp (mentor) Differential Revision: https://reviews.freebsd.org/D20282
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commit
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=348786
@ -722,6 +722,8 @@ nvme_announce_periph(struct cam_periph *periph)
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struct ccb_trans_settings cts;
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struct cam_path *path = periph->path;
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struct ccb_trans_settings_nvme *nvmex;
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struct sbuf sb;
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char buffer[120];
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cam_periph_assert(periph, MA_OWNED);
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@ -736,13 +738,18 @@ nvme_announce_periph(struct cam_periph *periph)
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/* Ask the SIM for its base transfer speed */
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xpt_path_inq(&cpi, periph->path);
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printf("%s%d: nvme version %d.%d x%d (max x%d) lanes PCIe Gen%d (max Gen%d) link",
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sbuf_new(&sb, buffer, sizeof(buffer), SBUF_FIXEDLEN);
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sbuf_printf(&sb, "%s%d: nvme version %d.%d",
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periph->periph_name, periph->unit_number,
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NVME_MAJOR(nvmex->spec),
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NVME_MINOR(nvmex->spec),
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nvmex->lanes, nvmex->max_lanes,
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nvmex->speed, nvmex->max_speed);
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printf("\n");
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NVME_MINOR(nvmex->spec));
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if (nvmex->valid & CTS_NVME_VALID_LINK)
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sbuf_printf(&sb, " x%d (max x%d) lanes PCIe Gen%d (max Gen%d) link",
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nvmex->lanes, nvmex->max_lanes,
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nvmex->speed, nvmex->max_speed);
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sbuf_printf(&sb, "\n");
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sbuf_finish(&sb);
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sbuf_putbuf(&sb);
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}
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static void
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@ -212,7 +212,7 @@ nvme_sim_action(struct cam_sim *sim, union ccb *ccb)
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struct ccb_trans_settings_nvme *nvmep;
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struct ccb_trans_settings_nvme *nvmex;
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device_t dev;
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uint32_t status, caps;
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uint32_t status, caps, flags;
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dev = ctrlr->dev;
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cts = &ccb->cts;
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@ -221,12 +221,16 @@ nvme_sim_action(struct cam_sim *sim, union ccb *ccb)
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status = pcie_read_config(dev, PCIER_LINK_STA, 2);
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caps = pcie_read_config(dev, PCIER_LINK_CAP, 2);
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nvmex->valid = CTS_NVME_VALID_SPEC | CTS_NVME_VALID_LINK;
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flags = pcie_read_config(dev, PCIER_FLAGS, 2);
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nvmex->spec = nvme_mmio_read_4(ctrlr, vs);
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nvmex->speed = status & PCIEM_LINK_STA_SPEED;
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nvmex->lanes = (status & PCIEM_LINK_STA_WIDTH) >> 4;
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nvmex->max_speed = caps & PCIEM_LINK_CAP_MAX_SPEED;
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nvmex->max_lanes = (caps & PCIEM_LINK_CAP_MAX_WIDTH) >> 4;
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nvmex->valid = CTS_NVME_VALID_SPEC;
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if ((flags & PCIEM_FLAGS_TYPE) == PCIEM_TYPE_ENDPOINT) {
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nvmex->valid |= CTS_NVME_VALID_LINK;
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nvmex->speed = status & PCIEM_LINK_STA_SPEED;
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nvmex->lanes = (status & PCIEM_LINK_STA_WIDTH) >> 4;
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nvmex->max_speed = caps & PCIEM_LINK_CAP_MAX_SPEED;
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nvmex->max_lanes = (caps & PCIEM_LINK_CAP_MAX_WIDTH) >> 4;
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}
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/* XXX these should be something else maybe ? */
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nvmep->valid = 1;
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