d889913205
ath12k is a new mac80211 driver for Qualcomm Wi-Fi 7 devices, first supporting QCN9274 and WCN7850 PCI devices. QCN9274 supports both AP and station; WCN7850 supports only station mode. Monitor mode is not (yet) supported. Only PCI bus devices are supported. ath12k is forked from an earlier version of ath11k. It was simpler to have a "clean start" for the new generation and not try to share the code with ath11k. This makes maintenance easier and avoids major changes in ath11k, which would have significantly increased the risk of regressions in existing setups. ath12k uses le32 and cpu_to_le32() macros to handle endian conversions, instead of using the firmware byte swap feature utilized by ath11k. There is only one kernel module, named ath12k.ko. Currently ath12k only supports HE mode (IEEE 802.11ax) or older, but work is ongoing to add EHT mode (IEEE 802.11be) support. The size of the driver is ~41 kLOC and 45 files. To make the review easier, this initial version of ath12k does not support Device Tree, debugfs or any other extra features. Those will be added later, after ath12k is accepted to upstream. The driver is build tested by Intel's kernel test robot with both GCC and Clang. Sparse reports no warnings. The driver is mostly free of checkpatch warnings, albeit few of the warnings are omitted on purpose, list of them here: https://github.com/qca/qca-swiss-army-knife/blob/master/tools/scripts/ath12k/ath12k-check#L52 The driver has had multiple authors who are listed in alphabetical order below. Co-developed-by: Balamurugan Selvarajan <quic_bselvara@quicinc.com> Signed-off-by: Balamurugan Selvarajan <quic_bselvara@quicinc.com> Co-developed-by: Baochen Qiang <quic_bqiang@quicinc.com> Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com> Co-developed-by: Bhagavathi Perumal S <quic_bperumal@quicinc.com> Signed-off-by: Bhagavathi Perumal S <quic_bperumal@quicinc.com> Co-developed-by: Carl Huang <quic_cjhuang@quicinc.com> Signed-off-by: Carl Huang <quic_cjhuang@quicinc.com> Co-developed-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Co-developed-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com> Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com> Co-developed-by: P Praneesh <quic_ppranees@quicinc.com> Signed-off-by: P Praneesh <quic_ppranees@quicinc.com> Co-developed-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com> Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com> Co-developed-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com> Signed-off-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com> Co-developed-by: Sriram R <quic_srirrama@quicinc.com> Signed-off-by: Sriram R <quic_srirrama@quicinc.com> Co-developed-by: Vasanthakumar Thiagarajan <quic_vthiagar@quicinc.com> Signed-off-by: Vasanthakumar Thiagarajan <quic_vthiagar@quicinc.com> Co-developed-by: Wen Gong <quic_wgong@quicinc.com> Signed-off-by: Wen Gong <quic_wgong@quicinc.com> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
136 lines
4.2 KiB
C
136 lines
4.2 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause-Clear */
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/*
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* Copyright (c) 2019-2021 The Linux Foundation. All rights reserved.
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* Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#ifndef ATH12K_PCI_H
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#define ATH12K_PCI_H
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#include <linux/mhi.h>
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#include "core.h"
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#define PCIE_SOC_GLOBAL_RESET 0x3008
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#define PCIE_SOC_GLOBAL_RESET_V 1
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#define WLAON_WARM_SW_ENTRY 0x1f80504
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#define WLAON_SOC_RESET_CAUSE_REG 0x01f8060c
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#define PCIE_Q6_COOKIE_ADDR 0x01f80500
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#define PCIE_Q6_COOKIE_DATA 0xc0000000
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/* register to wake the UMAC from power collapse */
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#define PCIE_SCRATCH_0_SOC_PCIE_REG 0x4040
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/* register used for handshake mechanism to validate UMAC is awake */
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#define PCIE_SOC_WAKE_PCIE_LOCAL_REG 0x3004
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#define PCIE_PCIE_PARF_LTSSM 0x1e081b0
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#define PARM_LTSSM_VALUE 0x111
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#define GCC_GCC_PCIE_HOT_RST 0x1e38338
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#define GCC_GCC_PCIE_HOT_RST_VAL 0x10
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#define PCIE_PCIE_INT_ALL_CLEAR 0x1e08228
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#define PCIE_SMLH_REQ_RST_LINK_DOWN 0x2
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#define PCIE_INT_CLEAR_ALL 0xffffffff
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#define PCIE_QSERDES_COM_SYSCLK_EN_SEL_REG(ab) \
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((ab)->hw_params->regs->pcie_qserdes_sysclk_en_sel)
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#define PCIE_QSERDES_COM_SYSCLK_EN_SEL_VAL 0x10
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#define PCIE_QSERDES_COM_SYSCLK_EN_SEL_MSK 0xffffffff
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#define PCIE_PCS_OSC_DTCT_CONFIG1_REG(ab) \
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((ab)->hw_params->regs->pcie_pcs_osc_dtct_config_base)
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#define PCIE_PCS_OSC_DTCT_CONFIG1_VAL 0x02
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#define PCIE_PCS_OSC_DTCT_CONFIG2_REG(ab) \
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((ab)->hw_params->regs->pcie_pcs_osc_dtct_config_base + 0x4)
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#define PCIE_PCS_OSC_DTCT_CONFIG2_VAL 0x52
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#define PCIE_PCS_OSC_DTCT_CONFIG4_REG(ab) \
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((ab)->hw_params->regs->pcie_pcs_osc_dtct_config_base + 0xc)
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#define PCIE_PCS_OSC_DTCT_CONFIG4_VAL 0xff
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#define PCIE_PCS_OSC_DTCT_CONFIG_MSK 0x000000ff
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#define WLAON_QFPROM_PWR_CTRL_REG 0x01f8031c
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#define QFPROM_PWR_CTRL_VDD4BLOW_MASK 0x4
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#define PCI_BAR_WINDOW0_BASE 0x1E00000
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#define PCI_BAR_WINDOW0_END 0x1E7FFFC
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#define PCI_SOC_RANGE_MASK 0x3FFF
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#define PCI_SOC_PCI_REG_BASE 0x1E04000
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#define PCI_SOC_PCI_REG_END 0x1E07FFC
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#define PCI_PARF_BASE 0x1E08000
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#define PCI_PARF_END 0x1E0BFFC
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#define PCI_MHIREGLEN_REG 0x1E0E100
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#define PCI_MHI_REGION_END 0x1E0EFFC
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#define QRTR_PCI_DOMAIN_NR_MASK GENMASK(7, 4)
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#define QRTR_PCI_BUS_NUMBER_MASK GENMASK(3, 0)
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#define ATH12K_PCI_SOC_HW_VERSION_1 1
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#define ATH12K_PCI_SOC_HW_VERSION_2 2
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struct ath12k_msi_user {
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const char *name;
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int num_vectors;
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u32 base_vector;
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};
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struct ath12k_msi_config {
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int total_vectors;
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int total_users;
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const struct ath12k_msi_user *users;
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};
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enum ath12k_pci_flags {
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ATH12K_PCI_FLAG_INIT_DONE,
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ATH12K_PCI_FLAG_IS_MSI_64,
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ATH12K_PCI_ASPM_RESTORE,
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};
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struct ath12k_pci {
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struct pci_dev *pdev;
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struct ath12k_base *ab;
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u16 dev_id;
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char amss_path[100];
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u32 msi_ep_base_data;
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struct mhi_controller *mhi_ctrl;
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const struct ath12k_msi_config *msi_config;
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unsigned long mhi_state;
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u32 register_window;
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/* protects register_window above */
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spinlock_t window_lock;
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/* enum ath12k_pci_flags */
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unsigned long flags;
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u16 link_ctl;
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};
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static inline struct ath12k_pci *ath12k_pci_priv(struct ath12k_base *ab)
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{
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return (struct ath12k_pci *)ab->drv_priv;
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}
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int ath12k_pci_get_user_msi_assignment(struct ath12k_base *ab, char *user_name,
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int *num_vectors, u32 *user_base_data,
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u32 *base_vector);
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int ath12k_pci_get_msi_irq(struct device *dev, unsigned int vector);
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void ath12k_pci_write32(struct ath12k_base *ab, u32 offset, u32 value);
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u32 ath12k_pci_read32(struct ath12k_base *ab, u32 offset);
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int ath12k_pci_map_service_to_pipe(struct ath12k_base *ab, u16 service_id,
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u8 *ul_pipe, u8 *dl_pipe);
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void ath12k_pci_get_msi_address(struct ath12k_base *ab, u32 *msi_addr_lo,
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u32 *msi_addr_hi);
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void ath12k_pci_get_ce_msi_idx(struct ath12k_base *ab, u32 ce_id,
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u32 *msi_idx);
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void ath12k_pci_hif_ce_irq_enable(struct ath12k_base *ab);
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void ath12k_pci_hif_ce_irq_disable(struct ath12k_base *ab);
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void ath12k_pci_ext_irq_enable(struct ath12k_base *ab);
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void ath12k_pci_ext_irq_disable(struct ath12k_base *ab);
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int ath12k_pci_hif_suspend(struct ath12k_base *ab);
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int ath12k_pci_hif_resume(struct ath12k_base *ab);
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void ath12k_pci_stop(struct ath12k_base *ab);
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int ath12k_pci_start(struct ath12k_base *ab);
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int ath12k_pci_power_up(struct ath12k_base *ab);
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void ath12k_pci_power_down(struct ath12k_base *ab);
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#endif /* ATH12K_PCI_H */
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