/*
* The PCI Utilities -- Show Extended Capabilities
*
- * Copyright (c) 1997--2010 Martin Mares <mj@ucw.cz>
+ * Copyright (c) 1997--2020 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
return;
ctrl3 = get_conf_word(d, where + PCI_SEC_LNKCTL3);
- printf("\t\tLnkCtl3: LnkEquIntrruptEn%c, PerformEqu%c\n",
+ printf("\t\tLnkCtl3: LnkEquIntrruptEn%c PerformEqu%c\n",
FLAG(ctrl3, PCI_SEC_LNKCTL3_LNK_EQU_REQ_INTR_EN),
FLAG(ctrl3, PCI_SEC_LNKCTL3_PERFORM_LINK_EQU));
}
}
+static void
+cap_dvsec_cxl(struct device *d, int where)
+{
+ u16 l;
+
+ printf(": CXL\n");
+ if (verbose < 2)
+ return;
+
+ if (!config_fetch(d, where + PCI_CXL_CAP, 12))
+ return;
+
+ l = get_conf_word(d, where + PCI_CXL_CAP);
+ printf("\t\tCXLCap:\tCache%c IO%c Mem%c Mem HW Init%c HDMCount %d Viral%c\n",
+ FLAG(l, PCI_CXL_CAP_CACHE), FLAG(l, PCI_CXL_CAP_IO), FLAG(l, PCI_CXL_CAP_MEM),
+ FLAG(l, PCI_CXL_CAP_MEM_HWINIT), PCI_CXL_CAP_HDM_CNT(l), FLAG(l, PCI_CXL_CAP_VIRAL));
+
+ l = get_conf_word(d, where + PCI_CXL_CTRL);
+ printf("\t\tCXLCtl:\tCache%c IO%c Mem%c Cache SF Cov %d Cache SF Gran %d Cache Clean%c Viral%c\n",
+ FLAG(l, PCI_CXL_CTRL_CACHE), FLAG(l, PCI_CXL_CTRL_IO), FLAG(l, PCI_CXL_CTRL_MEM),
+ PCI_CXL_CTRL_CACHE_SF_COV(l), PCI_CXL_CTRL_CACHE_SF_GRAN(l), FLAG(l, PCI_CXL_CTRL_CACHE_CLN),
+ FLAG(l, PCI_CXL_CTRL_VIRAL));
+
+ l = get_conf_word(d, where + PCI_CXL_STATUS);
+ printf("\t\tCXLSta:\tViral%c\n", FLAG(l, PCI_CXL_STATUS_VIRAL));
+}
+
+static void
+cap_dvsec(struct device *d, int where)
+{
+ printf("Designated Vendor-Specific: ");
+ if (!config_fetch(d, where + PCI_DVSEC_HEADER1, 8))
+ {
+ printf("<unreadable>\n");
+ return;
+ }
+
+ u32 hdr = get_conf_long(d, where + PCI_DVSEC_HEADER1);
+ u16 vendor = BITS(hdr, 0, 16);
+ byte rev = BITS(hdr, 16, 4);
+ u16 len = BITS(hdr, 20, 12);
+
+ u16 id = get_conf_long(d, where + PCI_DVSEC_HEADER2);
+
+ printf("Vendor=%04x ID=%04x Rev=%d Len=%d", vendor, id, rev, len);
+ if (vendor == PCI_DVSEC_VENDOR_ID_CXL && id == PCI_DVSEC_ID_CXL && len >= 16)
+ cap_dvsec_cxl(d, where);
+ else
+ printf(" <?>\n");
+}
+
static void
cap_evendor(struct device *d, int where)
{
}
}
+static void
+print_rebar_range_size(int ld2_size)
+{
+ // This function prints the input as a power-of-2 size value
+ // It is biased with 1MB = 0, ...
+ // Maximum resizable BAR value supported is 2^63 bytes = 43
+ // for the extended resizable BAR capability definition
+ // (otherwise it would stop at 2^28)
+
+ if (ld2_size >= 0 && ld2_size < 10)
+ printf(" %dMB", (1 << ld2_size));
+ else if (ld2_size >= 10 && ld2_size < 20)
+ printf(" %dGB", (1 << (ld2_size-10)));
+ else if (ld2_size >= 20 && ld2_size < 30)
+ printf(" %dTB", (1 << (ld2_size-20)));
+ else if (ld2_size >= 30 && ld2_size < 40)
+ printf(" %dPB", (1 << (ld2_size-30)));
+ else if (ld2_size >= 40 && ld2_size < 44)
+ printf(" %dEB", (1 << (ld2_size-40)));
+ else
+ printf(" <unknown>");
+}
+
+static void
+cap_rebar(struct device *d, int where, int virtual)
+{
+ u32 sizes_buffer, control_buffer, ext_sizes, current_size;
+ u16 bar_index, barcount, data_count;
+ // If structure exists at least one bar is defined
+ u16 num_bars = 1;
+
+ printf("%s Resizable BAR\n", (virtual) ? "Virtual" : "Physical");
+
+ if (verbose < 1)
+ return;
+
+ // Go through all defined BAR definitions of the caps, at minimum 1
+ // (loop also terminates if num_bars read from caps is > 6)
+ for (barcount = 0; barcount < num_bars; barcount++)
+ {
+ where += 4;
+
+ // Get the next BAR configuration
+ if (!config_fetch(d, where, 8))
+ {
+ printf("\t\t<unreadable>\n");
+ return;
+ }
+
+ sizes_buffer = get_conf_long(d, where) >> 4;
+
+ where += 4;
+
+ control_buffer = get_conf_long(d, where);
+
+ bar_index = control_buffer & 0x07;
+ current_size = (control_buffer >> 8) & 0x3f;
+ ext_sizes = control_buffer >> 16;
+
+ if (barcount == 0)
+ {
+ // Only index 0 controlreg has the num_bar count definition
+ num_bars = (control_buffer >> 5) & 0x07;
+ if (verbose == 1)
+ {
+ // Must be below or equal 6
+ if (num_bars <= 6)
+ {
+ // Fewer resizable BARs than total supported BARs may be available,
+ // or the resizable BAR support may not start at BAR index 0.
+ // list how many resizable BARs are expected.
+ printf("\t\t%d resizable BAR%s available\n", num_bars, (num_bars == 1) ? "" : "s");
+ }
+ }
+ // If num_bars value is outside of the supported range, exit the parsing loop
+ if (num_bars > 6)
+ {
+ printf("\t\t<error in resizable BAR # value: %d is out of specification>", num_bars);
+ break;
+ }
+ }
+
+ // Resizable BAR list entry have an arbitrary index and current size
+ printf("\t\tBAR %d, current size:", bar_index);
+ print_rebar_range_size(current_size);
+
+ // Only print out the detail BAR sizes if vv is defined. Function modifies caps bits
+ // to enumerate supported sizes, ext_sizes is only != 0 for devices with
+ // extended resizable BAR capability, e.g. when > 128TB is needed
+
+ if ((verbose < 2) ||
+ ((sizes_buffer == 0) && (ext_sizes == 0)))
+ {
+ printf("\n");
+ continue;
+ }
+
+ printf("\n\t\tsupported:");
+
+ for (data_count = 0; data_count < 28; data_count++)
+ {
+ if ((sizes_buffer & (1U << data_count)) != 0)
+ {
+ // Mark the supported size as processed
+ sizes_buffer &= ~(1U << data_count);
+ print_rebar_range_size(data_count);
+ }
+ }
+
+ // If a device needs > 128TB BAR, extended Resizable BAR feature is active and
+ // ext_sizes is set. This is not common.
+
+ if (ext_sizes != 0)
+ {
+ for (data_count = 0; data_count < 16; data_count++)
+ {
+ if ((ext_sizes & (1U << data_count)) != 0)
+ {
+ // Mark the supported size as processed
+ ext_sizes &= ~(1U << data_count);
+ print_rebar_range_size((data_count + 28));
+ }
+ }
+ }
+ printf("\n");
+ }
+}
+
void
show_ext_caps(struct device *d, int type)
{
cap_pri(d, where);
break;
case PCI_EXT_CAP_ID_REBAR:
- printf("Resizable BAR <?>\n");
+ cap_rebar(d, where, 0);
break;
case PCI_EXT_CAP_ID_DPA:
printf("Dynamic Power Allocation <?>\n");
printf("Readiness Time Reporting <?>\n");
break;
case PCI_EXT_CAP_ID_DVSEC:
- printf("Designated Vendor-Specific <?>\n");
+ cap_dvsec(d, where);
break;
case PCI_EXT_CAP_ID_VF_REBAR:
- printf("VF Resizable BAR <?>\n");
+ cap_rebar(d, where, 1);
break;
case PCI_EXT_CAP_ID_DLNK:
printf("Data Link Feature <?>\n");
projects / pciutils.git / blobdiff