diff options
| author | Christophe Lombard <clombard@linux.vnet.ibm.com> | 2020-11-25 18:50:11 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-12-03 17:01:30 +0300 |
| commit | d731feea00c7c1734c9697558f2a1962c12d2710 (patch) | |
| tree | 06b53cfd7eef05dbf3f7e4996244a7006443b69e /drivers/misc/ocxl/link.c | |
| parent | 19b311ca51e108b6d8d679496af8635fdc1984a8 (diff) | |
| download | linux-d731feea00c7c1734c9697558f2a1962c12d2710.tar.xz | |
ocxl: Update the Process Element Entry
To complete the MMIO based mechanism, the fields: PASID, bus, device and
function of the Process Element Entry have to be filled. (See
OpenCAPI Power Platform Architecture document)
Hypervisor Process Element Entry
Word
0 1 .... 7 8 ...... 12 13 ..15 16.... 19 20 ........... 31
0 OSL Configuration State (0:31)
1 OSL Configuration State (32:63)
2 PASID | Reserved
3 Bus | Device |Function | Reserved
4 Reserved
5 Reserved
6 ....
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201125155013.39955-4-clombard@linux.vnet.ibm.com
Diffstat (limited to 'drivers/misc/ocxl/link.c')
| -rw-r--r-- | drivers/misc/ocxl/link.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/misc/ocxl/link.c b/drivers/misc/ocxl/link.c index fd73d3bc0eb6..77381dda2c45 100644 --- a/drivers/misc/ocxl/link.c +++ b/drivers/misc/ocxl/link.c @@ -494,7 +494,7 @@ static u64 calculate_cfg_state(bool kernel) } int ocxl_link_add_pe(void *link_handle, int pasid, u32 pidr, u32 tidr, - u64 amr, struct mm_struct *mm, + u64 amr, u16 bdf, struct mm_struct *mm, void (*xsl_err_cb)(void *data, u64 addr, u64 dsisr), void *xsl_err_data) { @@ -529,6 +529,8 @@ int ocxl_link_add_pe(void *link_handle, int pasid, u32 pidr, u32 tidr, memset(pe, 0, sizeof(struct ocxl_process_element)); pe->config_state = cpu_to_be64(calculate_cfg_state(pidr == 0)); + pe->pasid = cpu_to_be32(pasid << (31 - 19)); + pe->bdf = cpu_to_be16(bdf); pe->lpid = cpu_to_be32(mfspr(SPRN_LPID)); pe->pid = cpu_to_be32(pidr); pe->tid = cpu_to_be32(tidr); |