2024-04-30 13:31:47

by Jeff Johnson

Subject: [PATCH 1/2] wifi: ath11k: refactor CE remap & unmap

Currently the logic that handles hw_params->ce_remap is inline code,
both for doing the remap and the unmap. An upcoming change needs to do
the unmap in a second place, so refactor the unmap logic into a
separate function. And although it is only called from one place,
refactor the remap logic as well to have functional symmetry.

No functional changes, compile tested only.

Signed-off-by: Jeff Johnson <[email protected]>
---
drivers/net/wireless/ath/ath11k/ahb.c | 52 +++++++++++++++++++++++------------
1 file changed, 34 insertions(+), 18 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/ahb.c b/drivers/net/wireless/ath/ath11k/ahb.c
index 60b4c2800a33..aa62ed710090 100644
--- a/drivers/net/wireless/ath/ath11k/ahb.c
+++ b/drivers/net/wireless/ath/ath11k/ahb.c
@@ -949,6 +949,36 @@ static int ath11k_ahb_setup_msa_resources(struct ath11k_base *ab)
return 0;
}

+static int ath11k_ahb_ce_remap(struct ath11k_base *ab)
+{
+ const struct ce_remap *ce_remap = ab->hw_params.ce_remap;
+ struct platform_device *pdev = ab->pdev;
+
+ if (!ce_remap) {
+ /* no separate CE register space */
+ ab->mem_ce = ab->mem;
+ return 0;
+ }
+
+ /* ce register space is moved out of wcss unlike ipq8074 or ipq6018
+ * and the space is not contiguous, hence remapping the CE registers
+ * to a new space for accessing them.
+ */
+ ab->mem_ce = ioremap(ce_remap->base, ce_remap->size);
+ if (!ab->mem_ce) {
+ dev_err(&pdev->dev, "ce ioremap error\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void ath11k_ahb_ce_unmap(struct ath11k_base *ab)
+{
+ if (ab->hw_params.ce_remap)
+ iounmap(ab->mem_ce);
+}
+
static int ath11k_ahb_fw_resources_init(struct ath11k_base *ab)
{
struct ath11k_ahb *ab_ahb = ath11k_ahb_priv(ab);
@@ -1141,21 +1171,9 @@ static int ath11k_ahb_probe(struct platform_device *pdev)
if (ret)
goto err_core_free;

- ab->mem_ce = ab->mem;
-
- if (ab->hw_params.ce_remap) {
- const struct ce_remap *ce_remap = ab->hw_params.ce_remap;
- /* ce register space is moved out of wcss unlike ipq8074 or ipq6018
- * and the space is not contiguous, hence remapping the CE registers
- * to a new space for accessing them.
- */
- ab->mem_ce = ioremap(ce_remap->base, ce_remap->size);
- if (!ab->mem_ce) {
- dev_err(&pdev->dev, "ce ioremap error\n");
- ret = -ENOMEM;
- goto err_core_free;
- }
- }
+ ret = ath11k_ahb_ce_remap(ab);
+ if (ret)
+ goto err_core_free;

ret = ath11k_ahb_fw_resources_init(ab);
if (ret)
@@ -1243,9 +1261,7 @@ static void ath11k_ahb_free_resources(struct ath11k_base *ab)
ath11k_ahb_release_smp2p_handle(ab);
ath11k_ahb_fw_resource_deinit(ab);
ath11k_ce_free_pipes(ab);
-
- if (ab->hw_params.ce_remap)
- iounmap(ab->mem_ce);
+ ath11k_ahb_ce_unmap(ab);

ath11k_core_free(ab);
platform_set_drvdata(pdev, NULL);

--
2.42.0

2024-05-03 13:19:08

by Kalle Valo

Subject: Re: [PATCH 1/2] wifi: ath11k: refactor CE remap & unmap

Jeff Johnson <[email protected]> wrote:

> Currently the logic that handles hw_params->ce_remap is inline code,
> both for doing the remap and the unmap. An upcoming change needs to do
> the unmap in a second place, so refactor the unmap logic into a
> separate function. And although it is only called from one place,
> refactor the remap logic as well to have functional symmetry.
>
> No functional changes, compile tested only.
>
> Signed-off-by: Jeff Johnson <[email protected]>
> Signed-off-by: Kalle Valo <[email protected]>

2 patches applied to ath-next branch of ath.git, thanks.

8b9ea752a9d6 wifi: ath11k: refactor CE remap & unmap
c57d00a4d3d8 wifi: ath11k: unmap the CE in ath11k_ahb_probe() error path

--
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches