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powerpc/powernv: Functions to get/set PCI slot state

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This exports 4 functions, which base on the corresponding OPAL
APIs to get/set PCI slot status. Those functions are going to
be used by PowerNV PCI hotplug driver:

   pnv_pci_get_device_tree()    opal_get_device_tree()
   pnv_pci_get_presence_state() opal_pci_get_presence_state()
   pnv_pci_get_power_state()    opal_pci_get_power_state()
   pnv_pci_set_power_state()    opal_pci_set_power_state()

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Gavin Shan
2016-05-20 16:41:41 +10:00
committed by Michael Ellerman
parent 7e19bf32c8
commit ea0d856cb2
5 changed files with 115 additions and 1 deletions
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18
arch/powerpc/include/asm/opal-api.h
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@@ -158,7 +158,11 @@
#define OPAL_LEDS_SET_INDICATOR 115
#define OPAL_CEC_REBOOT2 116
#define OPAL_CONSOLE_FLUSH 117
#define OPAL_LAST 117
#define OPAL_GET_DEVICE_TREE 118
#define OPAL_PCI_GET_PRESENCE_STATE 119
#define OPAL_PCI_GET_POWER_STATE 120
#define OPAL_PCI_SET_POWER_STATE 121
#define OPAL_LAST 121
/* Device tree flags */
@@ -344,6 +348,18 @@ enum OpalPciResetState {
OPAL_ASSERT_RESET = 1
};
enum OpalPciSlotPresence {
OPAL_PCI_SLOT_EMPTY = 0,
OPAL_PCI_SLOT_PRESENT = 1
};
enum OpalPciSlotPower {
OPAL_PCI_SLOT_POWER_OFF = 0,
OPAL_PCI_SLOT_POWER_ON = 1,
OPAL_PCI_SLOT_OFFLINE = 2,
OPAL_PCI_SLOT_ONLINE = 3
};
enum OpalSlotLedType {
OPAL_SLOT_LED_TYPE_ID = 0, /* IDENTIFY LED */
OPAL_SLOT_LED_TYPE_FAULT = 1, /* FAULT LED */