linux-kernel - [PATCH v2 1/8] firmware: cs_dsp: Introduce no_core

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 13 Mar 2023 15:49:48 +0000
From:   Richard Fitzgerald <rf@...nsource.cirrus.com>
To:     <broonie@...nel.org>, <pierre-louis.bossart@...ux.intel.com>
CC:     <peter.ujfalusi@...ux.intel.com>,
        <yung-chuan.liao@...ux.intel.com>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>, <patches@...nsource.cirrus.com>,
        Simon Trimmer <simont@...nsource.cirrus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>
Subject: [PATCH v2 1/8] firmware: cs_dsp: Introduce no_core_startstop for self-booting DSPs

From: Simon Trimmer <simont@...nsource.cirrus.com>

There are devices containing Halo Core DSPs that self-boot, cs_dsp is
used to manage the running firmware but the host does not have direct
control over starting and stopping the DSP and so cs_dsp should consider
the DSP to be always running.

Signed-off-by: Simon Trimmer <simont@...nsource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>
---
 drivers/firmware/cirrus/cs_dsp.c       | 14 +++++++++++++-
 include/linux/firmware/cirrus/cs_dsp.h |  1 +
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c
index f558b390fbfe..97b73a254380 100644
--- a/drivers/firmware/cirrus/cs_dsp.c
+++ b/drivers/firmware/cirrus/cs_dsp.c
@@ -301,6 +301,7 @@ struct cs_dsp_ops {
 static const struct cs_dsp_ops cs_dsp_adsp1_ops;
 static const struct cs_dsp_ops cs_dsp_adsp2_ops[];
 static const struct cs_dsp_ops cs_dsp_halo_ops;
+static const struct cs_dsp_ops cs_dsp_halo_ao_ops;
 
 struct cs_dsp_buf {
 	struct list_head list;
@@ -2821,7 +2822,10 @@ EXPORT_SYMBOL_NS_GPL(cs_dsp_adsp2_init, FW_CS_DSP);
  */
 int cs_dsp_halo_init(struct cs_dsp *dsp)
 {
-	dsp->ops = &cs_dsp_halo_ops;
+	if (dsp->no_core_startstop)
+		dsp->ops = &cs_dsp_halo_ao_ops;
+	else
+		dsp->ops = &cs_dsp_halo_ops;
 
 	return cs_dsp_common_init(dsp);
 }
@@ -3187,6 +3191,14 @@ static const struct cs_dsp_ops cs_dsp_halo_ops = {
 	.stop_core = cs_dsp_halo_stop_core,
 };
 
+static const struct cs_dsp_ops cs_dsp_halo_ao_ops = {
+	.parse_sizes = cs_dsp_adsp2_parse_sizes,
+	.validate_version = cs_dsp_halo_validate_version,
+	.setup_algs = cs_dsp_halo_setup_algs,
+	.region_to_reg = cs_dsp_halo_region_to_reg,
+	.show_fw_status = cs_dsp_halo_show_fw_status,
+};
+
 /**
  * cs_dsp_chunk_write() - Format data to a DSP memory chunk
  * @ch: Pointer to the chunk structure
diff --git a/include/linux/firmware/cirrus/cs_dsp.h b/include/linux/firmware/cirrus/cs_dsp.h
index cad828e21c72..29cd11d5a3cf 100644
--- a/include/linux/firmware/cirrus/cs_dsp.h
+++ b/include/linux/firmware/cirrus/cs_dsp.h
@@ -156,6 +156,7 @@ struct cs_dsp {
 	unsigned int sysclk_reg;
 	unsigned int sysclk_mask;
 	unsigned int sysclk_shift;
+	bool no_core_startstop;
 
 	struct list_head alg_regions;
 
-- 
2.30.2