[PATCH 1/2] Add Hypertransport capability defines.

Eric W. Biederman
2006-07-10T22:15:12Z

This adds defines for the hypertransport capability subtypes
and starts using them a little.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---

This patch is against 2.6.18-rc1-mm1

arch/powerpc/sysdev/mpic.c | 2 +-
include/linux/pci_regs.h | 21 +++++++++++++++++++++
2 files changed, 22 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 9961eda..9be8c49 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -251,7 +251,7 @@ static void __init mpic_scan_ht_pic(stru
u8 id = readb(devbase + pos + PCI_CAP_LIST_ID);
if (id == PCI_CAP_ID_HT) {
id = readb(devbase + pos + 3);
- if (id == 0x80)
+ if (id == HT_CAPTYPE_IRQ)
break;
}
}
diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h
index 05b893e..0ea629c 100644
--- a/include/linux/pci_regs.h
+++ b/include/linux/pci_regs.h
@@ -12,6 +12,11 @@
* PCI Local Bus Specification
* PCI to PCI Bridge Specification
* PCI System Design Guide
+ *
+ * For hypertransport information, please consult the following manuals
+ * from http://www.hypertranposrt.org
+ *
+ * The Hypertransport I/O Link Specification
*/

#ifndef LINUX_PCI_REGS_H
@@ -447,4 +452,20 @@ #define PCI_PWR_DATA_RAIL(x) (((x) >> 1
#define PCI_PWR_CAP 12 /* Capability */
#define PCI_PWR_CAP_BUDGET(x) ((x) & 1) /* Included in system budget */

+/* Hypertransport sub capability types */
+#define HT_CAPTYPE_SLAVE 0x00 /* Slave/Primary link configuration */
+#define HT_CAPTYPE_HOST 0x20 /* Host/Secondary link configuration */
+#define HT_CAPTYPE_IRQ 0x80 /* IRQ Configuration */
+#define HT_CAPTYPE_REMAPPING_40 0xA0 /* 40 bit address remapping */
+#define HT_CAPTYPE_REMAPPING_64 0xA2 /* 64 bit address remapping */
+#define HT_CAPTYPE_UNITID_CLUMP 0x90 /* Unit ID clumping */
+#define HT_CAPTYPE_EXTCONF 0x98 /* Extended Configuration Space Access */
+#define HT_CAPTYPE_MSI_MAPPING 0xA8 /* MSI Mapping Capability */
+#define HT_CAPTYPE_DIRECT_ROUTE 0xB0 /* Direct routing configuration */
+#define HT_CAPTYPE_VCSET 0xB8 /* Virtual Channel configuration */
+#define HT_CAPTYPE_ERROR_RETRY 0xC0 /* Retry on error configuration */
+#define HT_CAPTYPE_GEN3 0xD0 /* Generation 3 hypertransport configuration */
+#define HT_CAPTYPE_PM 0xE0 /* Hypertransport powermanagement configuration */
+
+
#endif /* LINUX_PCI_REGS_H */
--
1.4.1.gac83a