soc: fsl: dpio: extract the QBMAN clock frequency from the attributes

Through the dpio_get_attributes() firmware call the dpio driver has access to the QBMAN clock frequency. Extend the structure which holds the firmware's response so that we can have access to this information. This will be needed in the next patches which also add support for interrupt coalescing which needs to be configured based on the frequency. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Oct 15, 2021 · 2cf0b6f · 2cf0b6f
1 parent f3fafbc
commit 2cf0b6f
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Showing 7 changed files with 11 additions and 0 deletions.
diff --git a/drivers/soc/fsl/dpio/dpio-cmd.h b/drivers/soc/fsl/dpio/dpio-cmd.h
@@ -46,6 +46,9 @@ struct dpio_rsp_get_attr {
 	__le64 qbman_portal_ci_addr;
 	/* cmd word 3 */
 	__le32 qbman_version;
+	__le32 pad1;
+	/* cmd word 4 */
+	__le32 clk;
 };
 
 struct dpio_stashing_dest {

diff --git a/drivers/soc/fsl/dpio/dpio-driver.c b/drivers/soc/fsl/dpio/dpio-driver.c
@@ -162,6 +162,7 @@ static int dpaa2_dpio_probe(struct fsl_mc_device *dpio_dev)
 		goto err_get_attr;
 	}
 	desc.qman_version = dpio_attrs.qbman_version;
+	desc.qman_clk = dpio_attrs.clk;
 
 	err = dpio_enable(dpio_dev->mc_io, 0, dpio_dev->mc_handle);
 	if (err) {

diff --git a/drivers/soc/fsl/dpio/dpio-service.c b/drivers/soc/fsl/dpio/dpio-service.c
@@ -127,6 +127,7 @@ struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc,
 	obj->dpio_desc = *desc;
 	obj->swp_desc.cena_bar = obj->dpio_desc.regs_cena;
 	obj->swp_desc.cinh_bar = obj->dpio_desc.regs_cinh;
+	obj->swp_desc.qman_clk = obj->dpio_desc.qman_clk;
 	obj->swp_desc.qman_version = obj->dpio_desc.qman_version;
 	obj->swp = qbman_swp_init(&obj->swp_desc);
 

diff --git a/drivers/soc/fsl/dpio/dpio.c b/drivers/soc/fsl/dpio/dpio.c
@@ -162,6 +162,7 @@ int dpio_get_attributes(struct fsl_mc_io *mc_io,
 	attr->qbman_portal_ci_offset =
 		le64_to_cpu(dpio_rsp->qbman_portal_ci_addr);
 	attr->qbman_version = le32_to_cpu(dpio_rsp->qbman_version);
+	attr->clk = le32_to_cpu(dpio_rsp->clk);
 
 	return 0;
 }

diff --git a/drivers/soc/fsl/dpio/dpio.h b/drivers/soc/fsl/dpio/dpio.h
@@ -59,6 +59,7 @@ int dpio_disable(struct fsl_mc_io	*mc_io,
  * @num_priorities: Number of priorities for the notification channel (1-8);
  *			relevant only if 'channel_mode = DPIO_LOCAL_CHANNEL'
  * @qbman_version: QBMAN version
+ * @clk: QBMAN clock frequency value in Hz
  */
 struct dpio_attr {
 	int			id;
@@ -68,6 +69,7 @@ struct dpio_attr {
 	enum dpio_channel_mode	channel_mode;
 	u8			num_priorities;
 	u32		qbman_version;
+	u32		clk;
 };
 
 int dpio_get_attributes(struct fsl_mc_io	*mc_io,

diff --git a/drivers/soc/fsl/dpio/qbman-portal.h b/drivers/soc/fsl/dpio/qbman-portal.h
@@ -24,6 +24,7 @@ struct qbman_swp_desc {
 	void *cena_bar; /* Cache-enabled portal base address */
 	void __iomem *cinh_bar; /* Cache-inhibited portal base address */
 	u32 qman_version;
+	u32 qman_clk;
 };
 
 #define QBMAN_SWP_INTERRUPT_EQRI 0x01

diff --git a/include/soc/fsl/dpaa2-io.h b/include/soc/fsl/dpaa2-io.h
@@ -44,6 +44,7 @@ struct device;
  * @regs_cinh:      The cache inhibited regs
  * @dpio_id:        The dpio index
  * @qman_version:   The qman version
+ * @qman_clk:       The qman clock frequency in Hz
  *
  * Describes the attributes and features of the DPIO object.
  */
@@ -55,6 +56,7 @@ struct dpaa2_io_desc {
 	void __iomem *regs_cinh;
 	int dpio_id;
 	u32 qman_version;
+	u32 qman_clk;
 };
 
 struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc,