xiaomi-sm8450/android_kernel_xiaomi_sm8450
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cxl: Add ability to reset the card

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Adds reset to sysfs which will PERST the card. If load_image_on_perst is set
to "user" or "factory", the PERST will cause that image to be loaded.

load_image_on_perst is set to "user" for production.

"none" could be used for debugging. The PSL trace arrays are preserved which
then can be read through debugfs.

PERST also triggers CAPP recovery. An HMI comes in, which is handled by EEH.
EEH unbinds the driver, calls into Sapphire to reinitialize the PHB, then
rebinds the driver.

Signed-off-by: Ryan Grimm <grimm@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Ryan Grimm
2015-01-19 11:52:51 -06:00
committed by Michael Ellerman
parent 1212aa1c8c
commit 62fa19d4b4
4 changed files with 63 additions and 0 deletions
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drivers/misc/cxl/cxl.h
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@@ -489,6 +489,7 @@ int cxl_alloc_irq_ranges(struct cxl_irq_ranges *irqs, struct cxl *adapter, unsig
void cxl_release_irq_ranges(struct cxl_irq_ranges *irqs, struct cxl *adapter);
int cxl_setup_irq(struct cxl *adapter, unsigned int hwirq, unsigned int virq);
int cxl_update_image_control(struct cxl *adapter);
int cxl_reset(struct cxl *adapter);
/* common == phyp + powernv */
struct cxl_process_element_common {