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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-06-12 08:19:10 +0300 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-06-18 07:33:56 +0300 |
| commit | f143304442f4b273f28343910f79d0221984b096 (patch) | |
| tree | b530d93c3d07b9e6c3dc165a02de1e3b1582f9ff /drivers/fsi/fsi-scom.c | |
| parent | 5a3c2f7656d0332eca310c74fb3641da0e45df17 (diff) | |
| download | linux-f143304442f4b273f28343910f79d0221984b096.tar.xz | |
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: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Eddie James <eajames@linux.vnet.ibm.com>
Diffstat (limited to 'drivers/fsi/fsi-scom.c')
| -rw-r--r-- | drivers/fsi/fsi-scom.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/fsi/fsi-scom.c b/drivers/fsi/fsi-scom.c index 6ddfb6021420..e98573ecdae1 100644 --- a/drivers/fsi/fsi-scom.c +++ b/drivers/fsi/fsi-scom.c @@ -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) |