powerpc/powernv: Functions to get/set PCI slot state
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:
parent
7e19bf32c8
commit
ea0d856cb2
|
@ -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 */
|
||||
|
|
|
@ -209,6 +209,12 @@ int64_t opal_flash_write(uint64_t id, uint64_t offset, uint64_t buf,
|
|||
uint64_t size, uint64_t token);
|
||||
int64_t opal_flash_erase(uint64_t id, uint64_t offset, uint64_t size,
|
||||
uint64_t token);
|
||||
int64_t opal_get_device_tree(uint32_t phandle, uint64_t buf, uint64_t len);
|
||||
int64_t opal_pci_get_presence_state(uint64_t id, uint64_t data);
|
||||
int64_t opal_pci_get_power_state(uint64_t id, uint64_t data);
|
||||
int64_t opal_pci_set_power_state(uint64_t async_token, uint64_t id,
|
||||
uint64_t data);
|
||||
int64_t opal_pci_poll2(uint64_t id, uint64_t data);
|
||||
|
||||
/* Internal functions */
|
||||
extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
|
||||
|
|
|
@ -12,12 +12,18 @@
|
|||
|
||||
#include <linux/pci.h>
|
||||
#include <misc/cxl-base.h>
|
||||
#include <asm/opal-api.h>
|
||||
|
||||
#define PCI_SLOT_ID_PREFIX 0x8000000000000000
|
||||
#define PCI_SLOT_ID(phb_id, bdfn) \
|
||||
(PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id))
|
||||
|
||||
extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
|
||||
extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
|
||||
extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
|
||||
extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
|
||||
extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
|
||||
struct opal_msg *msg);
|
||||
|
||||
int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
|
||||
int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
|
||||
|
|
|
@ -302,3 +302,7 @@ OPAL_CALL(opal_prd_msg, OPAL_PRD_MSG);
|
|||
OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR);
|
||||
OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR);
|
||||
OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH);
|
||||
OPAL_CALL(opal_get_device_tree, OPAL_GET_DEVICE_TREE);
|
||||
OPAL_CALL(opal_pci_get_presence_state, OPAL_PCI_GET_PRESENCE_STATE);
|
||||
OPAL_CALL(opal_pci_get_power_state, OPAL_PCI_GET_POWER_STATE);
|
||||
OPAL_CALL(opal_pci_set_power_state, OPAL_PCI_SET_POWER_STATE);
|
||||
|
|
|
@ -74,6 +74,88 @@ int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id)
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(pnv_pci_get_slot_id);
|
||||
|
||||
int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len)
|
||||
{
|
||||
int64_t rc;
|
||||
|
||||
if (!opal_check_token(OPAL_GET_DEVICE_TREE))
|
||||
return -ENXIO;
|
||||
|
||||
rc = opal_get_device_tree(phandle, (uint64_t)buf, len);
|
||||
if (rc < OPAL_SUCCESS)
|
||||
return -EIO;
|
||||
|
||||
return rc;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pnv_pci_get_device_tree);
|
||||
|
||||
int pnv_pci_get_presence_state(uint64_t id, uint8_t *state)
|
||||
{
|
||||
int64_t rc;
|
||||
|
||||
if (!opal_check_token(OPAL_PCI_GET_PRESENCE_STATE))
|
||||
return -ENXIO;
|
||||
|
||||
rc = opal_pci_get_presence_state(id, (uint64_t)state);
|
||||
if (rc != OPAL_SUCCESS)
|
||||
return -EIO;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pnv_pci_get_presence_state);
|
||||
|
||||
int pnv_pci_get_power_state(uint64_t id, uint8_t *state)
|
||||
{
|
||||
int64_t rc;
|
||||
|
||||
if (!opal_check_token(OPAL_PCI_GET_POWER_STATE))
|
||||
return -ENXIO;
|
||||
|
||||
rc = opal_pci_get_power_state(id, (uint64_t)state);
|
||||
if (rc != OPAL_SUCCESS)
|
||||
return -EIO;
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pnv_pci_get_power_state);
|
||||
|
||||
int pnv_pci_set_power_state(uint64_t id, uint8_t state, struct opal_msg *msg)
|
||||
{
|
||||
struct opal_msg m;
|
||||
int token, ret;
|
||||
int64_t rc;
|
||||
|
||||
if (!opal_check_token(OPAL_PCI_SET_POWER_STATE))
|
||||
return -ENXIO;
|
||||
|
||||
token = opal_async_get_token_interruptible();
|
||||
if (unlikely(token < 0))
|
||||
return token;
|
||||
|
||||
rc = opal_pci_set_power_state(token, id, (uint64_t)&state);
|
||||
if (rc == OPAL_SUCCESS) {
|
||||
ret = 0;
|
||||
goto exit;
|
||||
} else if (rc != OPAL_ASYNC_COMPLETION) {
|
||||
ret = -EIO;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
ret = opal_async_wait_response(token, &m);
|
||||
if (ret < 0)
|
||||
goto exit;
|
||||
|
||||
if (msg) {
|
||||
ret = 1;
|
||||
memcpy(msg, &m, sizeof(m));
|
||||
}
|
||||
|
||||
exit:
|
||||
opal_async_release_token(token);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(pnv_pci_set_power_state);
|
||||
|
||||
#ifdef CONFIG_PCI_MSI
|
||||
int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
|
||||
{
|
||||
|
|
Loading…
Reference in New Issue