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mcctrl: redesign mcctrl_channels for IKC packet based syscall offloading

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This commit is contained in:
Balazs Gerofi
2016-08-09 16:49:42 +09:00
parent fb84d4ef11
commit d7bc947a02
9 changed files with 244 additions and 465 deletions
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24
executer/kernel/mcctrl/ikc.c
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@ -27,6 +27,7 @@
#include <linux/miscdevice.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/interrupt.h>
#include "mcctrl.h"
#ifdef ATTACHED_MIC
#include <sysdeps/mic/mic/micconst.h>
@ -49,8 +50,9 @@ static int syscall_packet_handler(struct ihk_ikc_channel_desc *c,
{
struct ikc_scd_packet *pisp = __packet;
struct mcctrl_usrdata *usrdata = ihk_host_os_get_usrdata(__os);
int msg = pisp->msg;
switch (pisp->msg) {
switch (msg) {
case SCD_MSG_INIT_CHANNEL:
mcctrl_ikc_init(__os, pisp->ref, pisp->arg, c);
break;
@ -108,6 +110,14 @@ static int syscall_packet_handler(struct ihk_ikc_channel_desc *c,
pisp->err, pisp->arg);
break;
}
/*
* SCD_MSG_SYSCALL_ONESIDE holds the packet and frees is it
* mcexec_ret_syscall(), for the rest, free it here.
*/
if (msg != SCD_MSG_SYSCALL_ONESIDE) {
kfree(pisp);
}
return 0;
}
@ -144,8 +154,6 @@ int mcctrl_ikc_set_recv_cpu(ihk_os_t os, int cpu)
ihk_ikc_channel_set_cpu(usrdata->channels[cpu].c,
ihk_ikc_get_processor_id());
kprintf("Setting the target to %d\n",
ihk_ikc_get_processor_id());
return 0;
}
@ -191,12 +199,13 @@ static void mcctrl_ikc_init(ihk_os_t os, int cpu, unsigned long rphys, struct ih
#endif
pmc->param.request_va =
(void *)__get_free_pages(GFP_ATOMIC,
(void *)__get_free_pages(in_interrupt() ? GFP_ATOMIC : GFP_KERNEL,
REQUEST_SHIFT - PAGE_SHIFT);
pmc->param.request_pa = virt_to_phys(pmc->param.request_va);
pmc->param.doorbell_va = usrdata->mcctrl_doorbell_va;
pmc->param.doorbell_pa = usrdata->mcctrl_doorbell_pa;
pmc->param.post_va = (void *)__get_free_page(GFP_ATOMIC);
pmc->param.post_va = (void *)__get_free_page(in_interrupt() ?
GFP_ATOMIC : GFP_KERNEL);
pmc->param.post_pa = virt_to_phys(pmc->param.post_va);
memset(pmc->param.doorbell_va, 0, PAGE_SIZE);
memset(pmc->param.request_va, 0, PAGE_SIZE);
@ -216,8 +225,9 @@ static void mcctrl_ikc_init(ihk_os_t os, int cpu, unsigned long rphys, struct ih
PAGE_SIZE, NULL, 0);
#endif
pmc->dma_buf = (void *)__get_free_pages(GFP_ATOMIC,
DMA_PIN_SHIFT - PAGE_SHIFT);
pmc->dma_buf = (void *)__get_free_pages(in_interrupt() ?
GFP_ATOMIC : GFP_KERNEL,
DMA_PIN_SHIFT - PAGE_SHIFT);
rpm->request_page = pmc->param.request_pa;
rpm->doorbell_page = pmc->param.doorbell_pa;