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| author | Christophe Lombard <clombard@linux.vnet.ibm.com> | 2017-06-13 18:41:05 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-06-23 09:26:23 +0300 |
| commit | 797625deaedd9a0621376817db2813244b3246e3 (patch) | |
| tree | 98380967e1e8cd2653f49464b0ded56e29d510de /drivers/misc/cxl/main.c | |
| parent | 34f19ff1b5a0d11e46df479623d6936460105c9f (diff) | |
| download | linux-797625deaedd9a0621376817db2813244b3246e3.tar.xz | |
cxl: Fixes for Coherent Accelerator Interface Architecture 2.0
A previous set of patches "cxl: Add support for Coherent Accelerator
Interface Architecture 2.0" has introduced a new support for the CAPI
cards. These patches have been tested on Simulation environment and
quite a bit of them have been tested on real hardware.
This patch brings new fixes after a series of tests carried out on new
equipment:
- Add POWER9 definition.
- Re-enable any masked interrupts when the AFU is not activated
after resetting the AFU.
- Remove the api cxl_is_psl8/9 which is no longer useful.
- Do not dump CAPI1 registers.
- Rewrite cxl_is_page_fault() function.
- Do not register slb callack on P9.
Fixes: f24be42aab37 ("cxl: Add psl9 specific code")
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc/cxl/main.c')
| -rw-r--r-- | drivers/misc/cxl/main.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/misc/cxl/main.c b/drivers/misc/cxl/main.c index 1703655072b1..c1ba0d42cbc8 100644 --- a/drivers/misc/cxl/main.c +++ b/drivers/misc/cxl/main.c @@ -329,8 +329,15 @@ static int __init init_cxl(void) cxl_debugfs_init(); - if ((rc = register_cxl_calls(&cxl_calls))) - goto err; + /* + * we don't register the callback on P9. slb callack is only + * used for the PSL8 MMU and CX4. + */ + if (cxl_is_power8()) { + rc = register_cxl_calls(&cxl_calls); + if (rc) + goto err; + } if (cpu_has_feature(CPU_FTR_HVMODE)) { cxl_ops = &cxl_native_ops; @@ -347,7 +354,8 @@ static int __init init_cxl(void) return 0; err1: - unregister_cxl_calls(&cxl_calls); + if (cxl_is_power8()) + unregister_cxl_calls(&cxl_calls); err: cxl_debugfs_exit(); cxl_file_exit(); @@ -366,7 +374,8 @@ static void exit_cxl(void) cxl_debugfs_exit(); cxl_file_exit(); - unregister_cxl_calls(&cxl_calls); + if (cxl_is_power8()) + unregister_cxl_calls(&cxl_calls); idr_destroy(&cxl_adapter_idr); } |