diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-07-11 22:40:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-15 14:52:59 +0300 |
| commit | 434d611cddef1ceed32bf416a363992b01a3ff9a (patch) | |
| tree | a3257f7cec20386097ca1e79fded50777ea55d76 /drivers/hwtracing/coresight/coresight-catu.h | |
| parent | 8ed536b1e2838dad4f495347f0917b1cb6e3604f (diff) | |
| download | linux-434d611cddef1ceed32bf416a363992b01a3ff9a.tar.xz | |
coresight: catu: Plug in CATU as a backend for ETR buffer
Now that we can use a CATU with a scatter gather table, add support
for the TMC ETR to make use of the connected CATU in translate mode.
This is done by adding CATU as new buffer mode.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-catu.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-catu.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-catu.h b/drivers/hwtracing/coresight/coresight-catu.h index 4f221fccffca..1b281f0dcccc 100644 --- a/drivers/hwtracing/coresight/coresight-catu.h +++ b/drivers/hwtracing/coresight/coresight-catu.h @@ -27,6 +27,32 @@ #define CATU_MODE_PASS_THROUGH 0U #define CATU_MODE_TRANSLATE 1U +#define CATU_AXICTRL_ARCACHE_SHIFT 4 +#define CATU_AXICTRL_ARCACHE_MASK 0xf +#define CATU_AXICTRL_ARPROT_MASK 0x3 +#define CATU_AXICTRL_ARCACHE(arcache) \ + (((arcache) & CATU_AXICTRL_ARCACHE_MASK) << CATU_AXICTRL_ARCACHE_SHIFT) + +#define CATU_AXICTRL_VAL(arcache, arprot) \ + (CATU_AXICTRL_ARCACHE(arcache) | ((arprot) & CATU_AXICTRL_ARPROT_MASK)) + +#define AXI3_AxCACHE_WB_READ_ALLOC 0x7 +/* + * AXI - ARPROT bits: + * See AMBA AXI & ACE Protocol specification (ARM IHI 0022E) + * sectionA4.7 Access Permissions. + * + * Bit 0: 0 - Unprivileged access, 1 - Privileged access + * Bit 1: 0 - Secure access, 1 - Non-secure access. + * Bit 2: 0 - Data access, 1 - instruction access. + * + * CATU AXICTRL:ARPROT[2] is res0 as we always access data. + */ +#define CATU_OS_ARPROT 0x2 + +#define CATU_OS_AXICTRL \ + CATU_AXICTRL_VAL(AXI3_AxCACHE_WB_READ_ALLOC, CATU_OS_ARPROT) + #define CATU_STATUS_READY 8 #define CATU_STATUS_ADRERR 0 #define CATU_STATUS_AXIERR 4 @@ -67,6 +93,8 @@ catu_write_##name(struct catu_drvdata *drvdata, u64 val) \ CATU_REG32(control, CATU_CONTROL); CATU_REG32(mode, CATU_MODE); +CATU_REG32(irqen, CATU_IRQEN); +CATU_REG32(axictrl, CATU_AXICTRL); CATU_REG_PAIR(sladdr, CATU_SLADDRLO, CATU_SLADDRHI) CATU_REG_PAIR(inaddr, CATU_INADDRLO, CATU_INADDRHI) @@ -81,4 +109,11 @@ static inline bool coresight_is_catu_device(struct coresight_device *csdev) return true; } +#ifdef CONFIG_CORESIGHT_CATU +extern const struct etr_buf_operations etr_catu_buf_ops; +#else +/* Dummy declaration for the CATU ops */ +static const struct etr_buf_operations etr_catu_buf_ops; +#endif + #endif |