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| author |  Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
| 2023-09-10 19:50:33 +0530 |
|---|---|---|
| committer |  Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
| 2023-10-06 12:57:22 +0300 |
| commit | cdb1013808bed0c0c392b44ed4eed6c7743028c3 (patch) | |
| tree | 39a8fdc5acd58d3e95008193e5157f798cfe950e /drivers/platform | |
| parent | platform/x86/intel/tpmi: Add debugfs support for read/write blocked (diff) | |
| download | linux-cdb1013808bed0c0c392b44ed4eed6c7743028c3.tar.gz linux-cdb1013808bed0c0c392b44ed4eed6c7743028c3.tar.bz2 linux-cdb1013808bed0c0c392b44ed4eed6c7743028c3.zip | |
platform/x86/amd/pmc: Add PMFW command id to support S2D force flush
Recent PMFW have the capability that can force flush the FIFO
contents to DRAM on sending a command id via the mailbox. Add this support
to the driver.
Co-developed-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20230910142034.2967110-1-Shyam-sundar.S-k@amd.com
[ij: Corrected whitespace in dev_dbg_once()]
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/amd/pmc/pmc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/platform/x86/amd/pmc/pmc.c b/drivers/platform/x86/amd/pmc/pmc.c index c1e788b67a74..922932a71233 100644 --- a/drivers/platform/x86/amd/pmc/pmc.c +++ b/drivers/platform/x86/amd/pmc/pmc.c @@ -55,6 +55,9 @@ #define S2D_TELEMETRY_BYTES_MAX 0x100000 #define S2D_TELEMETRY_DRAMBYTES_MAX 0x1000000 +/* STB Spill to DRAM Message Definition */ +#define STB_FORCE_FLUSH_DATA 0xCF + /* Base address of SMU for mapping physical address to virtual address */ #define AMD_PMC_MAPPING_SIZE 0x01000 #define AMD_PMC_BASE_ADDR_OFFSET 0x10000 @@ -236,7 +239,7 @@ static const struct file_operations amd_pmc_stb_debugfs_fops = { static int amd_pmc_stb_debugfs_open_v2(struct inode *inode, struct file *filp) { struct amd_pmc_dev *dev = filp->f_inode->i_private; - u32 *buf, fsize, num_samples, stb_rdptr_offset = 0; + u32 *buf, fsize, num_samples, val, stb_rdptr_offset = 0; int ret; /* Write dummy postcode while reading the STB buffer */ @@ -251,6 +254,10 @@ static int amd_pmc_stb_debugfs_open_v2(struct inode *inode, struct file *filp) /* Spill to DRAM num_samples uses separate SMU message port */ dev->msg_port = 1; + ret = amd_pmc_send_cmd(dev, 0, &val, STB_FORCE_FLUSH_DATA, 1); + if (ret) + dev_dbg_once(dev->dev, "S2D force flush not supported: %d\n", ret); + /* Get the num_samples to calculate the last push location */ ret = amd_pmc_send_cmd(dev, S2D_NUM_SAMPLES, &num_samples, dev->s2d_msg_id, true); /* Clear msg_port for other SMU operation */ |