1 /* ==========================================================================
2 * $File: //dwh/usb_iip/dev/software/otg/linux/drivers/dwc_otg_pcd.h $
7 * Synopsys HS OTG Linux Software Driver and documentation (hereinafter,
8 * "Software") is an Unsupported proprietary work of Synopsys, Inc. unless
9 * otherwise expressly agreed to in writing between Synopsys and you.
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32 * ========================================================================== */
34 #if !defined(__DWC_PCD_H__)
38 #include "dwc_otg_cil.h"
39 #include "dwc_otg_pcd_if.h"
45 * This file contains the structures, constants, and interfaces for
46 * the Perpherial Contoller Driver (PCD).
48 * The Peripheral Controller Driver (PCD) for Linux will implement the
49 * Gadget API, so that the existing Gadget drivers can be used. For
50 * the Mass Storage Function driver the File-backed USB Storage Gadget
51 * (FBS) driver will be used. The FBS driver supports the
52 * Control-Bulk (CB), Control-Bulk-Interrupt (CBI), and Bulk-Only
57 /** Max Transfer size for any EP */
58 #define DDMA_MAX_TRANSFER_SIZE 65535
60 /** Max DMA Descriptor count for any EP */
61 #define MAX_DMA_DESC_CNT 64
64 * Get the pointer to the core_if from the pcd pointer.
66 #define GET_CORE_IF( _pcd ) (_pcd->core_if)
71 typedef enum ep0_state {
72 EP0_DISCONNECT, /* no host */
81 /** Fordward declaration.*/
84 /** DWC_otg iso request structure.
87 typedef struct usb_iso_request dwc_otg_pcd_iso_request_t;
89 /** DWC_otg request structure.
90 * This structure is a list of requests.
92 typedef struct dwc_otg_pcd_request {
100 DWC_CIRCLEQ_ENTRY(dwc_otg_pcd_request) queue_entry;
101 } dwc_otg_pcd_request_t;
103 DWC_CIRCLEQ_HEAD(req_list, dwc_otg_pcd_request);
105 /** PCD EP structure.
106 * This structure describes an EP, there is an array of EPs in the PCD
109 typedef struct dwc_otg_pcd_ep {
110 /** USB EP Descriptor */
111 const usb_endpoint_descriptor_t *desc;
113 /** queue of dwc_otg_pcd_requests. */
114 struct req_list queue;
116 unsigned disabling:1;
118 unsigned queue_sof:1;
121 /** ISOC req handle passed */
122 void *iso_req_handle;
125 /** DWC_otg ep data. */
128 /** Pointer to PCD */
129 struct dwc_otg_pcd *pcd;
134 /** DWC_otg PCD Structure.
135 * This structure encapsulates the data for the dwc_otg PCD.
138 const struct dwc_otg_pcd_function_ops *fops;
139 /** Core Interface */
140 dwc_otg_core_if_t *core_if;
143 /** EP0 Request is pending */
144 unsigned ep0_pending:1;
145 /** Indicates when SET CONFIGURATION Request is in process */
146 unsigned request_config:1;
147 /** The state of the Remote Wakeup Enable. */
148 unsigned remote_wakeup_enable:1;
149 /** The state of the B-Device HNP Enable. */
150 unsigned b_hnp_enable:1;
151 /** The state of A-Device HNP Support. */
152 unsigned a_hnp_support:1;
153 /** The state of the A-Device Alt HNP support. */
154 unsigned a_alt_hnp_support:1;
155 /** Count of pending Requests */
156 unsigned request_pending;
158 /** SETUP packet for EP0
159 * This structure is allocated as a DMA buffer on PCD initialization
160 * with enough space for up to 3 setup packets.
163 usb_device_request_t req;
167 dwc_dma_t setup_pkt_dma_handle;
169 /** 2-byte dma buffer used to return status from GET_STATUS */
170 uint16_t *status_buf;
171 dwc_dma_t status_buf_dma_handle;
174 dwc_otg_pcd_ep_t ep0;
176 /** Array of IN EPs. */
177 dwc_otg_pcd_ep_t in_ep[MAX_EPS_CHANNELS - 1];
178 /** Array of OUT EPs. */
179 dwc_otg_pcd_ep_t out_ep[MAX_EPS_CHANNELS - 1];
180 /** number of valid EPs in the above array. */
181 // unsigned num_eps : 4;
182 dwc_spinlock_t *lock;
183 /** Timer for SRP. If it expires before SRP is successful
185 dwc_timer_t *srp_timer;
187 /** Tasklet to defer starting of TEST mode transmissions until
188 * Status Phase has been completed.
190 dwc_tasklet_t *test_mode_tasklet;
192 /** Tasklet to delay starting of xfer in DMA mode */
193 dwc_tasklet_t *start_xfer_tasklet;
195 /** The test mode to enter when the tasklet is executed. */
197 /** The cfi_api structure that implements most of the CFI API
198 * and OTG specific core configuration functionality
201 struct cfiobject *cfi;
206 //FIXME this functions should be static, and this prototypes should be removed
207 extern void dwc_otg_request_nuke(dwc_otg_pcd_ep_t * ep);
208 extern void dwc_otg_request_done(dwc_otg_pcd_ep_t * ep,
209 dwc_otg_pcd_request_t * req, int32_t status);
211 void dwc_otg_iso_buffer_done(dwc_otg_pcd_t * pcd, dwc_otg_pcd_ep_t * ep,
214 extern void do_test_mode(void *data);
216 #endif /* DWC_HOST_ONLY */