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Commit f1433044 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt
Browse files

fsi: scom: Add register definitions 



Add a few more register and bit definitions, also define and use
SCOM_READ_CMD (which is 0 but it makes the code clearer)

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: default avatarEddie James <eajames@linux.vnet.ibm.com>
parent 5a3c2f76

drivers/fsi/fsi-scom.c

+18 −1
Original line number Diff line number Diff line
@@ -30,8 +30,25 @@ 
#define SCOM_DATA0_REG		0x00

#define SCOM_DATA1_REG		0x04

#define SCOM_CMD_REG		0x08

#define SCOM_FSI2PIB_RESET_REG	0x18

#define SCOM_STATUS_REG		0x1C /* Read */

#define SCOM_PIB_RESET_REG	0x1C /* Write */



/* Command register */

#define SCOM_WRITE_CMD		0x80000000

#define SCOM_READ_CMD		0x00000000



/* Status register bits */

#define SCOM_STATUS_ERR_SUMMARY		0x80000000

#define SCOM_STATUS_PROTECTION		0x01000000

#define SCOM_STATUS_PIB_ABORT		0x00100000

#define SCOM_STATUS_PIB_RESP_MASK	0x00007000

#define SCOM_STATUS_PIB_RESP_SHIFT	12



#define SCOM_STATUS_ANY_ERR		(SCOM_STATUS_ERR_SUMMARY | \

					 SCOM_STATUS_PROTECTION | \

					 SCOM_STATUS_PIB_ABORT | \

					 SCOM_STATUS_PIB_RESP_MASK)



struct scom_device {

	struct list_head link;
@@ -85,7 +102,7 @@ static int get_scom(struct scom_device *scom_dev, uint64_t *value, 


	mutex_lock(&scom_dev->lock);

	*value = 0ULL;

	data = cpu_to_be32(addr);

	data = cpu_to_be32(SCOM_READ_CMD | addr);

	rc = fsi_device_write(scom_dev->fsi_dev, SCOM_CMD_REG, &data,

				sizeof(uint32_t));

	if (rc)