From be9c1b75e49848c487f6a7d3b758a7a9f3a0efc2 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Sat, 23 Jan 2010 22:39:53 +0100
Subject: [PATCH] Decoding of the SATA HBA capability

---
 lib/header.h |  8 ++++++++
 ls-caps.c    | 25 ++++++++++++++++++++++++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/lib/header.h b/lib/header.h
index 92d7d1e..63e975b 100644
--- a/lib/header.h
+++ b/lib/header.h
@@ -224,6 +224,8 @@
 #define PCI_EXT_CAP_ID_ATS	0x0f	/* Address Translation Service */
 #define PCI_EXT_CAP_ID_SRIOV	0x10	/* Single Root I/O Virtualization */
 
+/*** Definitions of capabilities ***/
+
 /* Power Management Registers */
 
 #define  PCI_PM_CAP_VER_MASK	0x0007	/* Version (2=PM1.1) */
@@ -884,6 +886,12 @@
 #define PCI_AF_STATUS		5
 #define  PCI_AF_STATUS_TP	0x01
 
+/* SATA Host Bus Adapter */
+#define PCI_SATA_HBA_BARS	4
+#define PCI_SATA_HBA_REG0	8
+
+/*** Definitions of extended capabilities ***/
+
 /* Advanced Error Reporting */
 #define PCI_ERR_UNCOR_STATUS	4	/* Uncorrectable Error Status */
 #define  PCI_ERR_UNC_TRAIN	0x00000001	/* Undefined in PCIe rev1.1 & 2.0 spec */
diff --git a/ls-caps.c b/ls-caps.c
index 5ca2cd4..cc47873 100644
--- a/ls-caps.c
+++ b/ls-caps.c
@@ -1164,6 +1164,29 @@ cap_af(struct device *d, int where)
   printf("\t\tAFStatus: TP%c\n", FLAG(reg, PCI_AF_STATUS_TP));
 }
 
+static void
+cap_sata_hba(struct device *d, int where, int cap)
+{
+  u32 bars;
+  int bar;
+
+  printf("SATA HBA v%d.%d", BITS(cap, 4, 4), BITS(cap, 0, 4));
+  if (verbose < 2 || !config_fetch(d, where + PCI_SATA_HBA_BARS, 4))
+    {
+      printf("\n");
+      return;
+    }
+
+  bars = get_conf_long(d, where + PCI_SATA_HBA_BARS);
+  bar = BITS(bars, 0, 4);
+  if (bar >= 4 && bar <= 9)
+    printf(" BAR%d Offset=%08x\n", bar - 4, BITS(bars, 4, 20));
+  else if (bar == 15)
+    printf(" InCfgSpace\n");
+  else
+    printf(" BAR??%d\n", bar);
+}
+
 void
 show_caps(struct device *d)
 {
@@ -1253,7 +1276,7 @@ show_caps(struct device *d)
 	      cap_msix(d, where, cap);
 	      break;
 	    case PCI_CAP_ID_SATA:
-	      printf("SATA HBA <?>\n");
+	      cap_sata_hba(d, where, cap);
 	      break;
 	    case PCI_CAP_ID_AF:
 	      cap_af(d, where);
-- 
2.39.2