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| author | Tomas Winkler <tomas.winkler@intel.com> | 2022-09-08 00:51:08 +0300 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2022-09-12 15:23:11 +0300 |
| commit | 342e4c7e2d38e421f99898b629b5d82e5ae90323 (patch) | |
| tree | 6651eeae1839fb62abaadb7b38852b4da850031f /drivers/misc/mei/gsc-me.c | |
| parent | fa313ede703115c9ebb31ce36a946aae23c14d61 (diff) | |
| download | linux-stable-342e4c7e2d38e421f99898b629b5d82e5ae90323.tar.gz linux-stable-342e4c7e2d38e421f99898b629b5d82e5ae90323.tar.bz2 linux-stable-342e4c7e2d38e421f99898b629b5d82e5ae90323.zip | |
mei: gsc: setup gsc extended operational memory
1. Retrieve extended operational memory physical pointers from the
auxiliary device info.
2. Setup memory registers.
3. Notify firmware that the memory is ready by sending the memory
ready command.
4. Disable PXP device if GSC is not in PXP mode.
CC: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-12-tomas.winkler@intel.com
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/misc/mei/gsc-me.c')
| -rw-r--r-- | drivers/misc/mei/gsc-me.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c index bfa6154b93e2..6b22726aed55 100644 --- a/drivers/misc/mei/gsc-me.c +++ b/drivers/misc/mei/gsc-me.c @@ -32,6 +32,17 @@ static int mei_gsc_read_hfs(const struct mei_device *dev, int where, u32 *val) return 0; } +static void mei_gsc_set_ext_op_mem(const struct mei_me_hw *hw, struct resource *mem) +{ + u32 low = lower_32_bits(mem->start); + u32 hi = upper_32_bits(mem->start); + u32 limit = (resource_size(mem) / SZ_4K) | GSC_EXT_OP_MEM_VALID; + + iowrite32(low, hw->mem_addr + H_GSC_EXT_OP_MEM_BASE_ADDR_LO_REG); + iowrite32(hi, hw->mem_addr + H_GSC_EXT_OP_MEM_BASE_ADDR_HI_REG); + iowrite32(limit, hw->mem_addr + H_GSC_EXT_OP_MEM_LIMIT_REG); +} + static int mei_gsc_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *aux_dev_id) { @@ -67,6 +78,11 @@ static int mei_gsc_probe(struct auxiliary_device *aux_dev, dev_set_drvdata(device, dev); + if (adev->ext_op_mem.start) { + mei_gsc_set_ext_op_mem(hw, &adev->ext_op_mem); + dev->pxp_mode = MEI_DEV_PXP_INIT; + } + /* use polling */ if (mei_me_hw_use_polling(hw)) { mei_disable_interrupts(dev); |