Add support for setting up pci region and dma mask
for QCA6390 target.
Signed-off-by: Govind Singh <govinds@xxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/core.c | 1 +
drivers/net/wireless/ath/ath11k/pci.c | 109 ++++++++++++++++++++++++-
drivers/net/wireless/ath/ath11k/pci.h | 12 +++
3 files changed, 121 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index 8d07a2bb31bb..4c3f5a9d0d8a 100644
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -14,6 +14,7 @@
#include "hif.h"
unsigned int ath11k_debug_mask;
+EXPORT_SYMBOL(ath11k_debug_mask);
module_param_named(debug_mask, ath11k_debug_mask, uint, 0644);
MODULE_PARM_DESC(debug_mask, "Debugging mask");
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index 582e7cd3c56e..6ab9e25c4ff9 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -6,6 +6,7 @@
#include <linux/module.h>
#include <linux/pci.h>
+#include "ahb.h"
#include "core.h"
#include "pci.h"
#include "debug.h"
@@ -18,10 +19,98 @@ static const struct pci_device_id ath11k_pci_id_table[] = {
MODULE_DEVICE_TABLE(pci, ath11k_pci_id_table);
+static inline struct ath11k_pci *ath11k_pci_priv(struct ath11k_base *ab)
+{
+ return (struct ath11k_pci *)ab->drv_priv;
+}
+
+static int ath11k_pci_claim(struct ath11k_pci *ab_pci, struct pci_dev *pdev)
+{
+ u32 pci_dma_mask = PCI_DMA_MASK_32_BIT;
+ struct ath11k_base *ab = ab_pci->ab;
+ u16 device_id;
+ int ret = 0;
+
+ pci_read_config_word(pdev, PCI_DEVICE_ID, &device_id);
+ if (device_id != ab_pci->dev_id) {
+ ath11k_err(ab, "pci device id mismatch, config ID: 0x%x, probe ID: 0x%x\n",
+ device_id, ab_pci->dev_id);
+ ret = -EIO;
+ goto out;
+ }
+
+ ret = pci_assign_resource(pdev, PCI_BAR_NUM);
+ if (ret) {
+ ath11k_err(ab, "failed to assign pci resource, err = %d\n", ret);
+ goto out;
+ }
+
+ ret = pci_enable_device(pdev);
+ if (ret) {
+ ath11k_err(ab, "failed to enable pci device, err = %d\n", ret);
+ goto out;
+ }
+
+ ret = pci_request_region(pdev, PCI_BAR_NUM, "ath11k_pci");
+ if (ret) {
+ ath11k_err(ab, "failed to request pci region, err = %d\n", ret);
+ goto disable_device;
+ }
+
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(pci_dma_mask));
+ if (ret) {
+ ath11k_err(ab, "failed to set pci dma mask (%d), err = %d\n",
+ ret, pci_dma_mask);
+ goto release_region;
+ }
+
+ ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(pci_dma_mask));
+ if (ret) {
+ ath11k_err(ab, "failed to set pci consistent dma mask (%d), err = %d\n",
+ ret, pci_dma_mask);
+ goto release_region;
+ }
+
+ pci_set_master(pdev);
+
+ ab_pci->mem_len = pci_resource_len(pdev, PCI_BAR_NUM);
+ ab_pci->mem = pci_iomap(pdev, PCI_BAR_NUM, 0);
+ if (!ab_pci->mem) {
+ ath11k_err(ab, "failed to map pci bar, bar = %d\n", PCI_BAR_NUM);
+ ret = -EIO;
+ goto clear_master;
+ }
+
+ ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot pci_mem 0x%pK\n", ab_pci->mem);
+ return 0;
+
+clear_master:
+ pci_clear_master(pdev);
+release_region:
+ pci_release_region(pdev, PCI_BAR_NUM);
+disable_device:
+ pci_disable_device(pdev);
+out:
+ return ret;
+}
+
+static void ath11k_pci_free_region(struct ath11k_pci *ab_pci)
+{
+ struct pci_dev *pci_dev = ab_pci->pdev;
+
+ pci_iounmap(pci_dev, ab_pci->mem);
+ ab_pci->mem = NULL;
+ pci_clear_master(pci_dev);
+ pci_release_region(pci_dev, PCI_BAR_NUM);
+ if (pci_is_enabled(pci_dev))
+ pci_disable_device(pci_dev);
+}
+
static int ath11k_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *pci_dev)
{
struct ath11k_base *ab;
+ struct ath11k_pci *ab_pci;
enum ath11k_hw_rev hw_rev;
int ret;
@@ -38,24 +127,42 @@ static int ath11k_pci_probe(struct pci_dev *pdev,
return -ENOTSUPP;
}
- ab = ath11k_core_alloc(&pdev->dev, 0, ATH11K_BUS_PCI);
+ ab = ath11k_core_alloc(&pdev->dev, sizeof(*ab_pci), ATH11K_BUS_PCI);
if (!ab) {
dev_err(&pdev->dev, "failed to allocate ath11k base\n");
return -ENOMEM;
}
+ ab->dev = &pdev->dev;
+ ab->hw_rev = hw_rev;
+ pci_set_drvdata(pdev, ab);
+ ab_pci = ath11k_pci_priv(ab);
+ ab_pci->dev_id = pci_dev->device;
+ ab_pci->ab = ab;
ab->dev = &pdev->dev;
ab->hw_rev = hw_rev;
pci_set_drvdata(pdev, ab);
+ ret = ath11k_pci_claim(ab_pci, pdev);
+ if (ret) {
+ ath11k_err(ab, "failed to claim device: %d\n", ret);
+ goto err_free_core;
+ }
+
+ return 0;
+
+err_free_core:
+ ath11k_core_free(ab);
return ret;
}
static void ath11k_pci_remove(struct pci_dev *pdev)
{
struct ath11k_base *ab = pci_get_drvdata(pdev);
+ struct ath11k_pci *ab_pci = ath11k_pci_priv(ab);
set_bit(ATH11K_FLAG_UNREGISTERING, &ab->dev_flags);
+ ath11k_pci_free_region(ab_pci);
ath11k_core_free(ab);
}
diff --git a/drivers/net/wireless/ath/ath11k/pci.h b/drivers/net/wireless/ath/ath11k/pci.h
index 790b8993d225..5e6f2b5059a8 100644
--- a/drivers/net/wireless/ath/ath11k/pci.h
+++ b/drivers/net/wireless/ath/ath11k/pci.h
@@ -7,4 +7,16 @@
#define QCA6290_DEVICE_ID 0x1100
#define QCA6390_VENDOR_ID 0x17CB
#define QCA6390_DEVICE_ID 0x1101
+#define PCI_BAR_NUM 0
+#define PCI_DMA_MASK_64_BIT 64
+#define PCI_DMA_MASK_32_BIT 32
+struct ath11k_pci {
+ struct pci_dev *pdev;
+ struct device *dev;
+ struct ath11k_base *ab;
+ void __iomem *mem;
+ size_t mem_len;
+ u16 dev_id;
+ u32 chip_id;
+};
--
2.22.0
