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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a812dcc3a2
Add UV support to xpc_remote_memcpy(), which involves interfacing to the GRU driver. Signed-off-by: Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
148 lines
3.6 KiB
C
148 lines
3.6 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
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*/
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/*
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* Cross Partition Communication (XPC) uv-based functions.
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*
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* Architecture specific implementation of common functions.
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*
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*/
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#include <linux/kernel.h>
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#include <asm/uv/uv_hub.h>
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#include "../sgi-gru/grukservices.h"
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#include "xpc.h"
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static DECLARE_BITMAP(xpc_heartbeating_to_mask_uv, XP_MAX_NPARTITIONS_UV);
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static void *xpc_activate_mq;
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static void
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xpc_send_local_activate_IRQ_uv(struct xpc_partition *part)
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{
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/*
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* !!! Make our side think that the remote parition sent an activate
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* !!! message our way. Also do what the activate IRQ handler would
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* !!! do had one really been sent.
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*/
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}
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static enum xp_retval
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xpc_rsvd_page_init_uv(struct xpc_rsvd_page *rp)
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{
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/* !!! need to have established xpc_activate_mq earlier */
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rp->sn.activate_mq_gpa = uv_gpa(xpc_activate_mq);
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return xpSuccess;
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}
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static void
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xpc_increment_heartbeat_uv(void)
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{
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/* !!! send heartbeat msg to xpc_heartbeating_to_mask partids */
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}
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static void
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xpc_heartbeat_init_uv(void)
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{
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bitmap_zero(xpc_heartbeating_to_mask_uv, XP_MAX_NPARTITIONS_UV);
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xpc_heartbeating_to_mask = &xpc_heartbeating_to_mask_uv[0];
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}
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static void
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xpc_heartbeat_exit_uv(void)
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{
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/* !!! send heartbeat_offline msg to xpc_heartbeating_to_mask partids */
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}
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static void
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xpc_request_partition_activation_uv(struct xpc_rsvd_page *remote_rp,
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unsigned long remote_rp_pa, int nasid)
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{
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short partid = remote_rp->SAL_partid;
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struct xpc_partition *part = &xpc_partitions[partid];
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/*
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* !!! Setup part structure with the bits of info we can glean from the rp:
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* !!! part->remote_rp_pa = remote_rp_pa;
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* !!! part->sn.uv.activate_mq_gpa = remote_rp->sn.activate_mq_gpa;
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*/
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xpc_send_local_activate_IRQ_uv(part);
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}
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static void
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xpc_request_partition_reactivation_uv(struct xpc_partition *part)
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{
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xpc_send_local_activate_IRQ_uv(part);
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}
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/*
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* Setup the infrastructure necessary to support XPartition Communication
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* between the specified remote partition and the local one.
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*/
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static enum xp_retval
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xpc_setup_infrastructure_uv(struct xpc_partition *part)
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{
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/* !!! this function needs fleshing out */
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return xpUnsupported;
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}
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/*
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* Teardown the infrastructure necessary to support XPartition Communication
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* between the specified remote partition and the local one.
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*/
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static void
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xpc_teardown_infrastructure_uv(struct xpc_partition *part)
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{
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/* !!! this function needs fleshing out */
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return;
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}
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static enum xp_retval
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xpc_make_first_contact_uv(struct xpc_partition *part)
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{
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/* !!! this function needs fleshing out */
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return xpUnsupported;
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}
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static u64
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xpc_get_chctl_all_flags_uv(struct xpc_partition *part)
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{
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/* !!! this function needs fleshing out */
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return 0UL;
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}
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static struct xpc_msg *
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xpc_get_deliverable_msg_uv(struct xpc_channel *ch)
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{
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/* !!! this function needs fleshing out */
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return NULL;
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}
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void
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xpc_init_uv(void)
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{
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xpc_rsvd_page_init = xpc_rsvd_page_init_uv;
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xpc_increment_heartbeat = xpc_increment_heartbeat_uv;
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xpc_heartbeat_init = xpc_heartbeat_init_uv;
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xpc_heartbeat_exit = xpc_heartbeat_exit_uv;
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xpc_request_partition_activation = xpc_request_partition_activation_uv;
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xpc_request_partition_reactivation =
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xpc_request_partition_reactivation_uv;
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xpc_setup_infrastructure = xpc_setup_infrastructure_uv;
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xpc_teardown_infrastructure = xpc_teardown_infrastructure_uv;
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xpc_make_first_contact = xpc_make_first_contact_uv;
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xpc_get_chctl_all_flags = xpc_get_chctl_all_flags_uv;
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xpc_get_deliverable_msg = xpc_get_deliverable_msg_uv;
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}
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void
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xpc_exit_uv(void)
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{
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}
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