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hfi1_user_sdma_process_request(): map HFI1 kregbase

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This commit is contained in:
Balazs Gerofi
2017-08-03 16:40:14 +09:00
parent ec66229063
commit b60a980088
1 changed files with 45 additions and 0 deletions
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45
kernel/user_sdma.c
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@ -518,6 +518,19 @@ static u8 dlid_to_selector(u16 dlid)
return mapping[hash];
}
#ifndef __HFI1_ORIG__
/* hfi1/chip_registers.h */
#define CORE 0x000000000000
#define TXE (CORE + 0x000001800000)
/* hfi1/chip.h */
#define TXE_PIO_SEND (TXE + TXE_PIO_SEND_OFFSET)
#define TXE_PIO_SEND_OFFSET 0x0800000
#define TXE_PIO_SIZE (32 * 0x100000) /* 32 MB */
/* HFI1 device address in McKernel */
uint64_t hfi1_kregbase = 0;
#endif
#ifdef __HFI1_ORIG__
int hfi1_user_sdma_process_request(struct file *fp, struct iovec *iovec,
unsigned long dim, unsigned long *count)
@ -544,6 +557,38 @@ int hfi1_user_sdma_process_request(void *private_data, struct iovec *iovec,
u16 dlid;
u32 selector;
#ifndef __HFI1_ORIG__
if (!hfi1_kregbase) {
enum ihk_mc_pt_attribute attr = PTATTR_UNCACHABLE | PTATTR_WRITABLE;
void *virt;
#if 0
unsigned long phys = dd->physaddr;
hfi1_kregbase = dd->kregbase;
#else
unsigned long phys = *(uint64_t *)(((void *)dd) + 0xbf8);
hfi1_kregbase = *(uint64_t *)(((void *)dd) + 0xbe8);
#endif
/*
* No race condition here as ihk_mc_pt_set_page() holds
* the lock to kernel space mapping manipulation
*
* XXX: use large pages?
* XXX: where are we going to unmap this?
*/
for (virt = hfi1_kregbase; virt < (hfi1_kregbase + TXE_PIO_SEND);
virt += PAGE_SIZE, phys += PAGE_SIZE) {
if (ihk_mc_pt_set_page(NULL, virt, phys, attr) < 0) {
kprintf("%s: ERROR: mapping kregbase: 0x%lx -> 0x%lx\n",
__FUNCTION__, virt, phys);
}
}
dkprintf("%s: hfi1_kregbase: 0x%lx -> 0x%lx:%lu\n",
__FUNCTION__,
hfi1_kregbase, (phys - TXE_PIO_SEND), TXE_PIO_SEND);
}
#endif // __HFI1_ORIG__
hfi1_cdbg(AIOWRITE, "+");
if (iovec[idx].iov_len < sizeof(info) + sizeof(req->hdr)) {
hfi1_cdbg(