[patch v2 05/13] x86: Remove support for UV1 platform from uv_bau.h

From: steve . wahl
Date: Thu Jul 09 2020 - 10:55:58 EST

arch/x86/include/asm/uv/uv_bau.h: Remove UV1 support
arch/x86/platform/uv/tlb_uv.c: follow structure name change in uv_bau.h

Signed-off-by: Steve Wahl <steve.wahl@xxxxxxx>
---
arch/x86/include/asm/uv/uv_bau.h | 118 ++-------------------------------------
arch/x86/platform/uv/tlb_uv.c | 4 -
2 files changed, 9 insertions(+), 113 deletions(-)

--- linux.orig/arch/x86/include/asm/uv/uv_bau.h 2020-07-07 10:49:50.265510378 -0500
+++ linux/arch/x86/include/asm/uv/uv_bau.h 2020-07-07 10:56:14.265046872 -0500
@@ -46,10 +46,7 @@
#define UV_ACT_STATUS_SIZE 2
#define UV_DISTRIBUTION_SIZE 256
#define UV_SW_ACK_NPENDING 8
-#define UV1_NET_ENDPOINT_INTD 0x38
-#define UV2_NET_ENDPOINT_INTD 0x28
-#define UV_NET_ENDPOINT_INTD (is_uv1_hub() ? \
- UV1_NET_ENDPOINT_INTD : UV2_NET_ENDPOINT_INTD)
+#define UV_NET_ENDPOINT_INTD 0x28
#define UV_PAYLOADQ_GNODE_SHIFT 49
#define UV_PTC_BASENAME "sgi_uv/ptc_statistics"
#define UV_BAU_BASENAME "sgi_uv/bau_tunables"
@@ -64,14 +61,9 @@
* UV2: Bit 19 selects between
* (0): 10 microsecond timebase and
* (1): 80 microseconds
- * we're using 560us, similar to UV1: 65 units of 10us
+ * we're using 560us
*/
-#define UV1_INTD_SOFT_ACK_TIMEOUT_PERIOD (9UL)
-#define UV2_INTD_SOFT_ACK_TIMEOUT_PERIOD (15UL)
-
-#define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD (is_uv1_hub() ? \
- UV1_INTD_SOFT_ACK_TIMEOUT_PERIOD : \
- UV2_INTD_SOFT_ACK_TIMEOUT_PERIOD)
+#define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD (15UL)
/* assuming UV3 is the same */

#define BAU_MISC_CONTROL_MULT_MASK 3
@@ -148,7 +140,6 @@

#define UV_LB_SUBNODEID 0x10

-/* these two are the same for UV1 and UV2: */
#define UV_SA_SHFT UVH_LB_BAU_MISC_CONTROL_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHFT
#define UV_SA_MASK UVH_LB_BAU_MISC_CONTROL_INTD_SOFT_ACK_TIMEOUT_PERIOD_MASK
/* 4 bits of software ack period */
@@ -189,8 +180,7 @@
#define BAU_DESC_QUALIFIER 0x534749

enum uv_bau_version {
- UV_BAU_V1 = 1,
- UV_BAU_V2,
+ UV_BAU_V2 = 2,
UV_BAU_V3,
UV_BAU_V4,
};
@@ -233,12 +223,12 @@ struct bau_local_cpumask {
*/

/**
- * struct uv1_2_3_bau_msg_payload - defines payload for INTD transactions
+ * struct uv2_3_bau_msg_payload - defines payload for INTD transactions
* @address: Signifies a page or all TLB's of the cpu
* @sending_cpu: CPU from which the message originates
* @acknowledge_count: CPUs on the destination Hub that received the interrupt
*/
-struct uv1_2_3_bau_msg_payload {
+struct uv2_3_bau_msg_payload {
u64 address;
u16 sending_cpu;
u16 acknowledge_count;
@@ -260,89 +250,6 @@ struct uv4_bau_msg_payload {
};

/*
- * UV1 Message header: 16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)
- * see table 4.2.3.0.1 in broacast_assist spec.
- */
-struct uv1_bau_msg_header {
- unsigned int dest_subnodeid:6; /* must be 0x10, for the LB */
- /* bits 5:0 */
- unsigned int base_dest_nasid:15; /* nasid of the first bit */
- /* bits 20:6 */ /* in uvhub map */
- unsigned int command:8; /* message type */
- /* bits 28:21 */
- /* 0x38: SN3net EndPoint Message */
- unsigned int rsvd_1:3; /* must be zero */
- /* bits 31:29 */
- /* int will align on 32 bits */
- unsigned int rsvd_2:9; /* must be zero */
- /* bits 40:32 */
- /* Suppl_A is 56-41 */
- unsigned int sequence:16; /* message sequence number */
- /* bits 56:41 */ /* becomes bytes 16-17 of msg */
- /* Address field (96:57) is
- never used as an address
- (these are address bits
- 42:3) */
-
- unsigned int rsvd_3:1; /* must be zero */
- /* bit 57 */
- /* address bits 27:4 are payload */
- /* these next 24 (58-81) bits become bytes 12-14 of msg */
- /* bits 65:58 land in byte 12 */
- unsigned int replied_to:1; /* sent as 0 by the source to
- byte 12 */
- /* bit 58 */
- unsigned int msg_type:3; /* software type of the
- message */
- /* bits 61:59 */
- unsigned int canceled:1; /* message canceled, resource
- is to be freed*/
- /* bit 62 */
- unsigned int payload_1a:1; /* not currently used */
- /* bit 63 */
- unsigned int payload_1b:2; /* not currently used */
- /* bits 65:64 */
-
- /* bits 73:66 land in byte 13 */
- unsigned int payload_1ca:6; /* not currently used */
- /* bits 71:66 */
- unsigned int payload_1c:2; /* not currently used */
- /* bits 73:72 */
-
- /* bits 81:74 land in byte 14 */
- unsigned int payload_1d:6; /* not currently used */
- /* bits 79:74 */
- unsigned int payload_1e:2; /* not currently used */
- /* bits 81:80 */
-
- unsigned int rsvd_4:7; /* must be zero */
- /* bits 88:82 */
- unsigned int swack_flag:1; /* software acknowledge flag */
- /* bit 89 */
- /* INTD trasactions at
- destination are to wait for
- software acknowledge */
- unsigned int rsvd_5:6; /* must be zero */
- /* bits 95:90 */
- unsigned int rsvd_6:5; /* must be zero */
- /* bits 100:96 */
- unsigned int int_both:1; /* if 1, interrupt both sockets
- on the uvhub */
- /* bit 101*/
- unsigned int fairness:3; /* usually zero */
- /* bits 104:102 */
- unsigned int multilevel:1; /* multi-level multicast
- format */
- /* bit 105 */
- /* 0 for TLB: endpoint multi-unicast messages */
- unsigned int chaining:1; /* next descriptor is part of
- this activation*/
- /* bit 106 */
- unsigned int rsvd_7:21; /* must be zero */
- /* bits 127:107 */
-};
-
-/*
* UV2 Message header: 16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)
* see figure 9-2 of harp_sys.pdf
* assuming UV3 is the same
@@ -418,25 +325,14 @@ struct bau_desc {
* message template, consisting of header and payload:
*/
union bau_msg_header {
- struct uv1_bau_msg_header uv1_hdr;
struct uv2_3_bau_msg_header uv2_3_hdr;
} header;

union bau_payload_header {
- struct uv1_2_3_bau_msg_payload uv1_2_3;
+ struct uv2_3_bau_msg_payload uv2_3;
struct uv4_bau_msg_payload uv4;
} payload;
};
-/* UV1:
- * -payload-- ---------header------
- * bytes 0-11 bits 41-56 bits 58-81
- * A B (2) C (3)
- *
- * A/B/C are moved to:
- * A C B
- * bytes 0-11 bytes 12-14 bytes 16-17 (byte 15 filled in by hw as vector)
- * ------------payload queue-----------
- */
/* UV2:
* -payload-- ---------header------
* bytes 0-11 bits 70-78 bits 21-44
--- linux.orig/arch/x86/platform/uv/tlb_uv.c 2020-07-07 10:56:13.665047592 -0500
+++ linux/arch/x86/platform/uv/tlb_uv.c 2020-07-07 10:56:14.273046863 -0500
@@ -1050,8 +1050,8 @@ const struct cpumask *uv_flush_tlb_other
switch (bcp->uvhub_version) {
case UV_BAU_V2:
case UV_BAU_V3:
- bau_desc->payload.uv1_2_3.address = address;
- bau_desc->payload.uv1_2_3.sending_cpu = cpu;
+ bau_desc->payload.uv2_3.address = address;
+ bau_desc->payload.uv2_3.sending_cpu = cpu;
break;
case UV_BAU_V4:
bau_desc->payload.uv4.address = address;