diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/mhi.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/mhi.c | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c index 9a8e61ca9964..38af8ec69d4c 100644 --- a/drivers/net/wireless/ath/ath11k/mhi.c +++ b/drivers/net/wireless/ath/ath11k/mhi.c @@ -3,6 +3,9 @@ #include <linux/msi.h> #include <linux/pci.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/ioport.h> #include "core.h" #include "debug.h" @@ -318,6 +321,26 @@ static void ath11k_mhi_op_write_reg(struct mhi_controller *mhi_cntrl, writel(val, addr); } +static int ath11k_mhi_read_addr_from_dt(struct mhi_controller *mhi_ctrl) +{ + struct device_node *np; + struct resource res; + int ret; + + np = of_find_node_by_type(NULL, "memory"); + if (!np) + return -ENOENT; + + ret = of_address_to_resource(np, 0, &res); + if (ret) + return ret; + + mhi_ctrl->iova_start = res.start + 0x1000000; + mhi_ctrl->iova_stop = res.end; + + return 0; +} + int ath11k_mhi_register(struct ath11k_pci *ab_pci) { struct ath11k_base *ab = ab_pci->ab; @@ -349,8 +372,15 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci) if (!test_bit(ATH11K_PCI_FLAG_MULTI_MSI_VECTORS, &ab_pci->flags)) mhi_ctrl->irq_flags = IRQF_SHARED | IRQF_NOBALANCING; - mhi_ctrl->iova_start = 0; - mhi_ctrl->iova_stop = 0xffffffff; + if (test_bit(ATH11K_FLAG_FIXED_MEM_RGN, &ab->dev_flags)) { + ret = ath11k_mhi_read_addr_from_dt(mhi_ctrl); + if (ret < 0) + return ret; + } else { + mhi_ctrl->iova_start = 0; + mhi_ctrl->iova_stop = 0xFFFFFFFF; + } + mhi_ctrl->sbl_size = SZ_512K; mhi_ctrl->seg_len = SZ_512K; mhi_ctrl->fbc_download = true; |