diff options
| author | Anilkumar Kolli <akolli@codeaurora.org> | 2021-12-14 17:39:43 +0200 |
|---|---|---|
| committer | Kalle Valo <quic_kvalo@quicinc.com> | 2021-12-16 17:33:51 +0200 |
| commit | 6ac04bdc5edb418787ab2040b1f922c23464c750 (patch) | |
| tree | 9083da369c5cc07c80cdb1527da3865cedfcacae /drivers/net/wireless/ath/ath11k/pci.c | |
| parent | dt: bindings: add new DT entry for ath11k PCI device support (diff) | |
| download | linux-6ac04bdc5edb418787ab2040b1f922c23464c750.tar.gz linux-6ac04bdc5edb418787ab2040b1f922c23464c750.zip | |
ath11k: Use reserved host DDR addresses from DT for PCI devices
Host DDR memory (contiguous 45 MB in mode-0 or 15 MB in mode-2)
is reserved through DT entries for firmware usage. Send the base
address from DT entries.
If DT entry is available, PCI device will work with
fixed_mem_region else host allocates multiple segments.
IPQ8074 on HK10 board supports multiple PCI devices.
IPQ8074 + QCN9074 is tested with this patch.
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1-01838-QCAHKSWPL_SILICONZ-1
Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/1638789319-2950-2-git-send-email-akolli@codeaurora.org
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/pci.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/pci.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c index 0a2b2ba4ae07..8c09d61138a1 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/msi.h> #include <linux/pci.h> +#include <linux/of.h> #include "pci.h" #include "core.h" @@ -1347,7 +1348,7 @@ static int ath11k_pci_probe(struct pci_dev *pdev, { struct ath11k_base *ab; struct ath11k_pci *ab_pci; - u32 soc_hw_version_major, soc_hw_version_minor; + u32 soc_hw_version_major, soc_hw_version_minor, addr; int ret; ab = ath11k_core_alloc(&pdev->dev, sizeof(*ab_pci), ATH11K_BUS_PCI, @@ -1367,6 +1368,14 @@ static int ath11k_pci_probe(struct pci_dev *pdev, pci_set_drvdata(pdev, ab); spin_lock_init(&ab_pci->window_lock); + /* Set fixed_mem_region to true for platforms support reserved memory + * from DT. If memory is reserved from DT for FW, ath11k driver need not + * allocate memory. + */ + ret = of_property_read_u32(ab->dev->of_node, "memory-region", &addr); + if (!ret) + set_bit(ATH11K_FLAG_FIXED_MEM_RGN, &ab->dev_flags); + ret = ath11k_pci_claim(ab_pci, pdev); if (ret) { ath11k_err(ab, "failed to claim device: %d\n", ret); |