diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/pci.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/pci.h | 104 |
1 files changed, 24 insertions, 80 deletions
diff --git a/drivers/net/wireless/ath/ath10k/pci.h b/drivers/net/wireless/ath/ath10k/pci.h index 940129209990..cf36511c7f4d 100644 --- a/drivers/net/wireless/ath/ath10k/pci.h +++ b/drivers/net/wireless/ath/ath10k/pci.h @@ -23,9 +23,6 @@ #include "hw.h" #include "ce.h" -/* FW dump area */ -#define REG_DUMP_COUNT_QCA988X 60 - /* * maximum number of bytes that can be handled atomically by DiagRead/DiagWrite */ @@ -103,12 +100,12 @@ struct pcie_state { * NOTE: Structure is shared between Host software and Target firmware! */ struct ce_pipe_config { - u32 pipenum; - u32 pipedir; - u32 nentries; - u32 nbytes_max; - u32 flags; - u32 reserved; + __le32 pipenum; + __le32 pipedir; + __le32 nentries; + __le32 nbytes_max; + __le32 flags; + __le32 reserved; }; /* @@ -130,17 +127,9 @@ struct ce_pipe_config { /* Establish a mapping between a service/direction and a pipe. */ struct service_to_pipe { - u32 service_id; - u32 pipedir; - u32 pipenum; -}; - -enum ath10k_pci_features { - ATH10K_PCI_FEATURE_MSI_X = 0, - ATH10K_PCI_FEATURE_SOC_POWER_SAVE = 1, - - /* keep last */ - ATH10K_PCI_FEATURE_COUNT + __le32 service_id; + __le32 pipedir; + __le32 pipenum; }; /* Per-pipe state. */ @@ -169,8 +158,6 @@ struct ath10k_pci { struct ath10k *ar; void __iomem *mem; - DECLARE_BITMAP(features, ATH10K_PCI_FEATURE_COUNT); - /* * Number of MSI interrupts granted, 0 --> using legacy PCI line * interrupts. @@ -179,12 +166,6 @@ struct ath10k_pci { struct tasklet_struct intr_tq; struct tasklet_struct msi_fw_err; - struct tasklet_struct early_irq_tasklet; - - int started; - - atomic_t keep_awake_count; - bool verified_awake; struct ath10k_pci_pipe pipe_info[CE_COUNT_MAX]; @@ -198,27 +179,15 @@ struct ath10k_pci { /* Map CE id to ce_state */ struct ath10k_ce_pipe ce_states[CE_COUNT_MAX]; + struct timer_list rx_post_retry; }; static inline struct ath10k_pci *ath10k_pci_priv(struct ath10k *ar) { - return ar->hif.priv; -} - -static inline u32 ath10k_pci_reg_read32(struct ath10k *ar, u32 addr) -{ - struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); - - return ioread32(ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + addr); -} - -static inline void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val) -{ - struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); - - iowrite32(val, ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + addr); + return (struct ath10k_pci *)ar->drv_priv; } +#define ATH10K_PCI_RX_POST_RETRY_MS 50 #define ATH_PCI_RESET_WAIT_MAX 10 /* ms */ #define PCIE_WAKE_TIMEOUT 5000 /* 5ms */ @@ -242,35 +211,17 @@ static inline void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val) /* Wait up to this many Ms for a Diagnostic Access CE operation to complete */ #define DIAG_ACCESS_CE_TIMEOUT_MS 10 -/* - * This API allows the Host to access Target registers directly - * and relatively efficiently over PCIe. - * This allows the Host to avoid extra overhead associated with - * sending a message to firmware and waiting for a response message - * from firmware, as is done on other interconnects. - * - * Yet there is some complexity with direct accesses because the - * Target's power state is not known a priori. The Host must issue - * special PCIe reads/writes in order to explicitly wake the Target - * and to verify that it is awake and will remain awake. - * - * Usage: +/* Target exposes its registers for direct access. However before host can + * access them it needs to make sure the target is awake (ath10k_pci_wake, + * ath10k_pci_wake_wait, ath10k_pci_is_awake). Once target is awake it won't go + * to sleep unless host tells it to (ath10k_pci_sleep). * - * Use ath10k_pci_read32 and ath10k_pci_write32 to access Target space. - * These calls must be bracketed by ath10k_pci_wake and - * ath10k_pci_sleep. A single BEGIN/END pair is adequate for - * multiple READ/WRITE operations. + * If host tries to access target registers without waking it up it can + * scribble over host memory. * - * Use ath10k_pci_wake to put the Target in a state in - * which it is legal for the Host to directly access it. This - * may involve waking the Target from a low power state, which - * may take up to 2Ms! - * - * Use ath10k_pci_sleep to tell the Target that as far as - * this code path is concerned, it no longer needs to remain - * directly accessible. BEGIN/END is under a reference counter; - * multiple code paths may issue BEGIN/END on a single targid. + * If target is asleep waking it up may take up to even 2ms. */ + static inline void ath10k_pci_write32(struct ath10k *ar, u32 offset, u32 value) { @@ -296,25 +247,18 @@ static inline void ath10k_pci_soc_write32(struct ath10k *ar, u32 addr, u32 val) ath10k_pci_write32(ar, RTC_SOC_BASE_ADDRESS + addr, val); } -int ath10k_do_pci_wake(struct ath10k *ar); -void ath10k_do_pci_sleep(struct ath10k *ar); - -static inline int ath10k_pci_wake(struct ath10k *ar) +static inline u32 ath10k_pci_reg_read32(struct ath10k *ar, u32 addr) { struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); - if (test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features)) - return ath10k_do_pci_wake(ar); - - return 0; + return ioread32(ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + addr); } -static inline void ath10k_pci_sleep(struct ath10k *ar) +static inline void ath10k_pci_reg_write32(struct ath10k *ar, u32 addr, u32 val) { struct ath10k_pci *ar_pci = ath10k_pci_priv(ar); - if (test_bit(ATH10K_PCI_FEATURE_SOC_POWER_SAVE, ar_pci->features)) - ath10k_do_pci_sleep(ar); + iowrite32(val, ar_pci->mem + PCIE_LOCAL_BASE_ADDRESS + addr); } #endif /* _PCI_H_ */ |