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Commit 9830ab7c authored by Yuanyuan Liu's avatar Yuanyuan Liu
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cnss2: Add debugfs entry for IO coherency 



Add debugfs entry for enable/disable IO coherency.

Change-Id: I388ad0c547b0c86843afcf31e77b4de9cfaa4c3a
CRs-Fixed: 2523919
Signed-off-by: default avatarYuanyuan Liu <yuanliu@codeaurora.org>
parent 773b595b

drivers/net/wireless/cnss2/debug.c

+3 −0
Original line number Diff line number Diff line
@@ -615,6 +615,9 @@ static int cnss_show_quirks_state(struct seq_file *s, 
		case DISABLE_DRV:

			seq_puts(s, "DISABLE_DRV");

			continue;

		case DISABLE_IO_COHERENCY:

			seq_puts(s, "DISABLE_IO_COHERENCY");

			continue;

		}



		seq_printf(s, "UNKNOWN-%d", i);

drivers/net/wireless/cnss2/main.c

+1 −1
Original line number Diff line number Diff line
@@ -31,7 +31,7 @@ 
#define CNSS_EVENT_PENDING		2989

#define COLD_BOOT_CAL_SHUTDOWN_DELAY_MS	50



#define CNSS_QUIRKS_DEFAULT		0

#define CNSS_QUIRKS_DEFAULT		BIT(DISABLE_IO_COHERENCY)

#ifdef CONFIG_CNSS_EMULATION

#define CNSS_MHI_TIMEOUT_DEFAULT	90000

#else

drivers/net/wireless/cnss2/main.h

+1 −0
Original line number Diff line number Diff line
@@ -239,6 +239,7 @@ enum cnss_debug_quirks { 
	FBC_BYPASS,

	ENABLE_DAEMON_SUPPORT,

	DISABLE_DRV,

	DISABLE_IO_COHERENCY,

};



enum cnss_bdf_type {

drivers/net/wireless/cnss2/pci.c

+16 −9
Original line number Diff line number Diff line
@@ -2902,6 +2902,7 @@ int cnss_smmu_map(struct device *dev, 
		  phys_addr_t paddr, uint32_t *iova_addr, size_t size)

{

	struct cnss_pci_data *pci_priv = cnss_get_pci_priv(to_pci_dev(dev));

	struct cnss_plat_data *plat_priv;

	unsigned long iova;

	size_t len;

	int ret = 0;
@@ -2919,6 +2920,8 @@ int cnss_smmu_map(struct device *dev, 
		return -EINVAL;

	}



	plat_priv = pci_priv->plat_priv;



	len = roundup(size + paddr - rounddown(paddr, PAGE_SIZE), PAGE_SIZE);

	iova = roundup(pci_priv->smmu_iova_ipa_start, PAGE_SIZE);
@@ -2931,16 +2934,20 @@ int cnss_smmu_map(struct device *dev, 
		return -ENOMEM;

	}



	if (!test_bit(DISABLE_IO_COHERENCY,

		      &plat_priv->ctrl_params.quirks)) {

		root_port = pci_find_pcie_root_port(pci_priv->pci_dev);

		root_of_node = root_port->dev.of_node;

		if (root_of_node->parent) {

		dma_coherent = of_property_read_bool(root_of_node->parent,

			dma_coherent =

				of_property_read_bool(root_of_node->parent,

						      "dma-coherent");

			cnss_pr_dbg("dma-coherent is %s\n",

				    dma_coherent ? "enabled" : "disabled");

			if (dma_coherent)

				flag |= IOMMU_CACHE;

		}

	}



	ret = iommu_map(pci_priv->iommu_domain, iova,

			rounddown(paddr, PAGE_SIZE), len, flag);