* Copyright 2010-2017 Intel Corporation.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* as published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
* Disclaimer: The codes contained in these modules may be specific to
* the Intel Software Development Platform codenamed Knights Ferry,
* and the Intel product codenamed Knights Corner, and are not backward
* compatible with other Intel products. Additionally, Intel will NOT
* support the codes or instruction set in future products.
* Intel offers no warranty of any kind regarding the code. This code is
* licensed on an "AS IS" basis and Intel is not obligated to provide
* any support, assistance, installation, training, or other services
* of any kind. Intel is also not obligated to provide any updates,
* enhancements or extensions. Intel specifically disclaims any warranty
* of merchantability, non-infringement, fitness for any particular
* purpose, and any other warranty.
* Further, Intel disclaims all liability of any kind, including but
* not limited to liability for infringement of any proprietary rights,
* relating to the use of the code, even if Intel is notified of the
* possibility of such liability. Except as expressly stated in an Intel
* license agreement provided with this code and agreed upon with Intel,
* no license, express or implied, by estoppel or otherwise, to any
* intellectual property rights is granted herein.
/* vnet/mic_shutdown/hvc/virtio */
#define VNET_SBOX_INT_IDX 0
#define MIC_SHT_SBOX_INT_IDX 1
#define HVC_SBOX_INT_IDX 2
#define VIRTIO_SBOX_INT_IDX 3
#define PM_SBOX_INT_IDX 4
#define MIC_BSP_INTERRUPT_VECTOR 229 // Host->Card(bootstrap) Interrupt Vector#
* Current usage of MIC interrupts:
* APICICR1 - mic shutdown interrupt
* vnet/hvc/virtio - APICICR0
* mic shutdown interrupt - APICICR1
static void __mic_send_intr(mic_ctx_t
*mic_ctx
, int i
)
uint64_t apic_icr_offset
= SBOX_APICICR0
+ i
* 8;
apicicr_low
= SBOX_READ(mic_ctx
->mmio
.va
, apic_icr_offset
);
/* for KNC we need to make sure we "hit" the send_icr bit (13) */
if (mic_ctx
->bi_family
== FAMILY_KNC
)
apicicr_low
= (apicicr_low
| (1 << 13));
/* MIC card only triggers when we write the lower part of the
SBOX_WRITE(apicicr_low
, mic_ctx
->mmio
.va
, apic_icr_offset
);
static inline void mic_send_vnet_intr(mic_ctx_t
*mic_ctx
)
__mic_send_intr(mic_ctx
, VNET_SBOX_INT_IDX
);
static inline void mic_send_hvc_intr(mic_ctx_t
*mic_ctx
)
__mic_send_intr(mic_ctx
, HVC_SBOX_INT_IDX
);
static inline void mic_send_scif_intr(mic_ctx_t
*mic_ctx
)
__mic_send_intr(mic_ctx
, 0);
static inline void mic_send_virtio_intr(mic_ctx_t
*mic_ctx
)
__mic_send_intr(mic_ctx
, VIRTIO_SBOX_INT_IDX
);
static inline void mic_send_sht_intr(mic_ctx_t
*mic_ctx
)
__mic_send_intr(mic_ctx
, 1);
static inline void mic_send_pm_intr(mic_ctx_t
*mic_ctx
)
__mic_send_intr(mic_ctx
, PM_SBOX_INT_IDX
);
static inline void mic_send_bootstrap_intr(mic_ctx_t
*mic_ctx
)
uint64_t apic_icr_offset
= SBOX_APICICR7
;
int vector
= MIC_BSP_INTERRUPT_VECTOR
;
if (mic_ctx
->bi_family
== FAMILY_ABR
){
/* for KNC we need to make sure we "hit" the send_icr bit (13) */
apicicr_low
= (vector
| (1 << 13));
SBOX_WRITE(mic_ctx
->apic_id
, mic_ctx
->mmio
.va
, apic_icr_offset
+ 4);
// MIC card only triggers when we write the lower part of the address (upper bits)
SBOX_WRITE(apicicr_low
, mic_ctx
->mmio
.va
, apic_icr_offset
);