diff options
Diffstat (limited to 'drivers/thunderbolt/nhi.h')
| -rw-r--r-- | drivers/thunderbolt/nhi.h | 93 |
1 files changed, 81 insertions, 12 deletions
diff --git a/drivers/thunderbolt/nhi.h b/drivers/thunderbolt/nhi.h index 317242939b31..5b5bb2c436be 100644 --- a/drivers/thunderbolt/nhi.h +++ b/drivers/thunderbolt/nhi.h @@ -7,45 +7,78 @@ #ifndef DSL3510_H_ #define DSL3510_H_ +#include <linux/idr.h> #include <linux/mutex.h> #include <linux/workqueue.h> /** * struct tb_nhi - thunderbolt native host interface + * @lock: Must be held during ring creation/destruction. Is acquired by + * interrupt_work when dispatching interrupts to individual rings. + * @pdev: Pointer to the PCI device + * @iobase: MMIO space of the NHI + * @tx_rings: All Tx rings available on this host controller + * @rx_rings: All Rx rings available on this host controller + * @msix_ida: Used to allocate MSI-X vectors for rings + * @going_away: The host controller device is about to disappear so when + * this flag is set, avoid touching the hardware anymore. + * @interrupt_work: Work scheduled to handle ring interrupt when no + * MSI-X is used. + * @hop_count: Number of rings (end point hops) supported by NHI. */ struct tb_nhi { - struct mutex lock; /* - * Must be held during ring creation/destruction. - * Is acquired by interrupt_work when dispatching - * interrupts to individual rings. - **/ + struct mutex lock; struct pci_dev *pdev; void __iomem *iobase; struct tb_ring **tx_rings; struct tb_ring **rx_rings; + struct ida msix_ida; + bool going_away; struct work_struct interrupt_work; - u32 hop_count; /* Number of rings (end point hops) supported by NHI. */ + u32 hop_count; }; /** * struct tb_ring - thunderbolt TX or RX ring associated with a NHI + * @lock: Lock serializing actions to this ring. Must be acquired after + * nhi->lock. + * @nhi: Pointer to the native host controller interface + * @size: Size of the ring + * @hop: Hop (DMA channel) associated with this ring + * @head: Head of the ring (write next descriptor here) + * @tail: Tail of the ring (complete next descriptor here) + * @descriptors: Allocated descriptors for this ring + * @queue: Queue holding frames to be transferred over this ring + * @in_flight: Queue holding frames that are currently in flight + * @work: Interrupt work structure + * @is_tx: Is the ring Tx or Rx + * @running: Is the ring running + * @irq: MSI-X irq number if the ring uses MSI-X. %0 otherwise. + * @vector: MSI-X vector number the ring uses (only set if @irq is > 0) + * @flags: Ring specific flags */ struct tb_ring { - struct mutex lock; /* must be acquired after nhi->lock */ + struct mutex lock; struct tb_nhi *nhi; int size; int hop; - int head; /* write next descriptor here */ - int tail; /* complete next descriptor here */ + int head; + int tail; struct ring_desc *descriptors; dma_addr_t descriptors_dma; struct list_head queue; struct list_head in_flight; struct work_struct work; - bool is_tx:1; /* rx otherwise */ + bool is_tx:1; bool running:1; + int irq; + u8 vector; + unsigned int flags; }; +/* Leave ring interrupt enabled on suspend */ +#define RING_FLAG_NO_SUSPEND BIT(0) + struct ring_frame; typedef void (*ring_cb)(struct tb_ring*, struct ring_frame*, bool canceled); @@ -64,8 +97,10 @@ struct ring_frame { #define TB_FRAME_SIZE 0x100 /* minimum size for ring_rx */ -struct tb_ring *ring_alloc_tx(struct tb_nhi *nhi, int hop, int size); -struct tb_ring *ring_alloc_rx(struct tb_nhi *nhi, int hop, int size); +struct tb_ring *ring_alloc_tx(struct tb_nhi *nhi, int hop, int size, + unsigned int flags); +struct tb_ring *ring_alloc_rx(struct tb_nhi *nhi, int hop, int size, + unsigned int flags); void ring_start(struct tb_ring *ring); void ring_stop(struct tb_ring *ring); void ring_free(struct tb_ring *ring); @@ -111,4 +146,38 @@ static inline int ring_tx(struct tb_ring *ring, struct ring_frame *frame) return __ring_enqueue(ring, frame); } +enum nhi_fw_mode { + NHI_FW_SAFE_MODE, + NHI_FW_AUTH_MODE, + NHI_FW_EP_MODE, + NHI_FW_CM_MODE, +}; + +enum nhi_mailbox_cmd { + NHI_MAILBOX_SAVE_DEVS = 0x05, + NHI_MAILBOX_DISCONNECT_PCIE_PATHS = 0x06, + NHI_MAILBOX_DRV_UNLOADS = 0x07, + NHI_MAILBOX_ALLOW_ALL_DEVS = 0x23, +}; + +int nhi_mailbox_cmd(struct tb_nhi *nhi, enum nhi_mailbox_cmd cmd, u32 data); +enum nhi_fw_mode nhi_mailbox_mode(struct tb_nhi *nhi); + +/* + * PCI IDs used in this driver from Win Ridge forward. There is no + * need for the PCI quirk anymore as we will use ICM also on Apple + * hardware. + */ +#define PCI_DEVICE_ID_INTEL_WIN_RIDGE_2C_NHI 0x157d +#define PCI_DEVICE_ID_INTEL_WIN_RIDGE_2C_BRIDGE 0x157e +#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_NHI 0x15bf +#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_BRIDGE 0x15c0 +#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_NHI 0x15d2 +#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE 0x15d3 +#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_NHI 0x15d9 +#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE 0x15da +#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_USBONLY_NHI 0x15dc +#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_USBONLY_NHI 0x15dd +#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_USBONLY_NHI 0x15de + #endif |