leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
b203d0a2e3
linux/drivers/usb/dwc2/core.h
Robert Baldyga b203d0a2e3 usb: dwc2/gadget: assign TX FIFO dynamically 
Because we have not enough memory to have each TX FIFO of size at least
3072 bytes (the maximum single packet size with 3 transactions per
microframe), we create four FIFOs of lenght 1024, and four of length
3072 bytes, and assing them to endpoints dynamically according to
maxpacket size value of given endpoint.

Up to now there were initialized 16 TX FIFOs, but we use only 8 IN
endpoints, so we can split available memory for 8 FIFOs to have more
memory for each one.

It needed to do some small modifications in few places in code, because
there was assumption that TX FIFO numbers assigned to endpoints are the
same as the endpoint numbers, which is not true since we have dynamic
FIFO assigning.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-19 16:16:39 -07:00

959 lines
37 KiB
C
Raw Blame History

/*
* core.h - DesignWare HS OTG Controller common declarations
*
* Copyright (C) 2004-2013 Synopsys, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of the above-listed copyright holders may not be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __DWC2_CORE_H__
#define __DWC2_CORE_H__
#include <linux/phy/phy.h>
#include <linux/regulator/consumer.h>
#include <linux/usb/gadget.h>
#include <linux/usb/otg.h>
#include <linux/usb/phy.h>
#include "hw.h"
#ifdef DWC2_LOG_WRITES
static inline void do_write(u32 value, void *addr)
{
writel(value, addr);
pr_info("INFO:: wrote %08x to %p\n", value, addr);
}
#undef writel
#define writel(v, a) do_write(v, a)
#endif
/* Maximum number of Endpoints/HostChannels */
#define MAX_EPS_CHANNELS 16
/* s3c-hsotg declarations */
static const char * const s3c_hsotg_supply_names[] = {
"vusb_d", /* digital USB supply, 1.2V */
"vusb_a", /* analog USB supply, 1.1V */
};
/*
* EP0_MPS_LIMIT
*
* Unfortunately there seems to be a limit of the amount of data that can
* be transferred by IN transactions on EP0. This is either 127 bytes or 3
* packets (which practically means 1 packet and 63 bytes of data) when the
* MPS is set to 64.
*
* This means if we are wanting to move >127 bytes of data, we need to
* split the transactions up, but just doing one packet at a time does
* not work (this may be an implicit DATA0 PID on first packet of the
* transaction) and doing 2 packets is outside the controller's limits.
*
* If we try to lower the MPS size for EP0, then no transfers work properly
* for EP0, and the system will fail basic enumeration. As no cause for this
* has currently been found, we cannot support any large IN transfers for
* EP0.
*/
#define EP0_MPS_LIMIT 64
struct s3c_hsotg;
struct s3c_hsotg_req;
/**
* struct s3c_hsotg_ep - driver endpoint definition.
* @ep: The gadget layer representation of the endpoint.
* @name: The driver generated name for the endpoint.
* @queue: Queue of requests for this endpoint.
* @parent: Reference back to the parent device structure.
* @req: The current request that the endpoint is processing. This is
* used to indicate an request has been loaded onto the endpoint
* and has yet to be completed (maybe due to data move, or simply
* awaiting an ack from the core all the data has been completed).
* @debugfs: File entry for debugfs file for this endpoint.
* @lock: State lock to protect contents of endpoint.
* @dir_in: Set to true if this endpoint is of the IN direction, which
* means that it is sending data to the Host.
* @index: The index for the endpoint registers.
* @mc: Multi Count - number of transactions per microframe
* @interval - Interval for periodic endpoints
* @name: The name array passed to the USB core.
* @halted: Set if the endpoint has been halted.
* @periodic: Set if this is a periodic ep, such as Interrupt
* @isochronous: Set if this is a isochronous ep
* @sent_zlp: Set if we've sent a zero-length packet.
* @total_data: The total number of data bytes done.
* @fifo_size: The size of the FIFO (for periodic IN endpoints)
* @fifo_load: The amount of data loaded into the FIFO (periodic IN)
* @last_load: The offset of data for the last start of request.
* @size_loaded: The last loaded size for DxEPTSIZE for periodic IN
*
* This is the driver's state for each registered enpoint, allowing it
* to keep track of transactions that need doing. Each endpoint has a
* lock to protect the state, to try and avoid using an overall lock
* for the host controller as much as possible.
*
* For periodic IN endpoints, we have fifo_size and fifo_load to try
* and keep track of the amount of data in the periodic FIFO for each
* of these as we don't have a status register that tells us how much
* is in each of them. (note, this may actually be useless information
* as in shared-fifo mode periodic in acts like a single-frame packet
* buffer than a fifo)
*/
struct s3c_hsotg_ep {
struct usb_ep ep;
struct list_head queue;
struct s3c_hsotg *parent;
struct s3c_hsotg_req *req;
struct dentry *debugfs;
unsigned long total_data;
unsigned int size_loaded;
unsigned int last_load;
unsigned int fifo_load;
unsigned short fifo_size;
unsigned short fifo_index;
unsigned char dir_in;
unsigned char index;
unsigned char mc;
unsigned char interval;
unsigned int halted:1;
unsigned int periodic:1;
unsigned int isochronous:1;
unsigned int sent_zlp:1;
char name[10];
};
/**
* struct s3c_hsotg - driver state.
* @dev: The parent device supplied to the probe function
* @driver: USB gadget driver
* @phy: The otg phy transceiver structure for phy control.
* @uphy: The otg phy transceiver structure for old USB phy control.
* @plat: The platform specific configuration data. This can be removed once
* all SoCs support usb transceiver.
* @regs: The memory area mapped for accessing registers.
* @irq: The IRQ number we are using
* @supplies: Definition of USB power supplies
* @phyif: PHY interface width
* @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos.
* @num_of_eps: Number of available EPs (excluding EP0)
* @debug_root: root directrory for debugfs.
* @debug_file: main status file for debugfs.
* @debug_fifo: FIFO status file for debugfs.
* @ep0_reply: Request used for ep0 reply.
* @ep0_buff: Buffer for EP0 reply data, if needed.
* @ctrl_buff: Buffer for EP0 control requests.
* @ctrl_req: Request for EP0 control packets.
* @setup: NAK management for EP0 SETUP
* @last_rst: Time of last reset
* @eps: The endpoints being supplied to the gadget framework
*/
struct s3c_hsotg {
struct device *dev;
struct usb_gadget_driver *driver;
struct phy *phy;
struct usb_phy *uphy;
struct s3c_hsotg_plat *plat;
spinlock_t lock;
void __iomem *regs;
int irq;
struct clk *clk;
struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsotg_supply_names)];
u32 phyif;
int fifo_mem;
unsigned int dedicated_fifos:1;
unsigned char num_of_eps;
u32 fifo_map;
struct dentry *debug_root;
struct dentry *debug_file;
struct dentry *debug_fifo;
struct usb_request *ep0_reply;
struct usb_request *ctrl_req;
u8 ep0_buff[8];
u8 ctrl_buff[8];
struct usb_gadget gadget;
unsigned int setup;
unsigned long last_rst;
struct s3c_hsotg_ep *eps;
};
/**
* struct s3c_hsotg_req - data transfer request
* @req: The USB gadget request
* @queue: The list of requests for the endpoint this is queued for.
* @in_progress: Has already had size/packets written to core
* @mapped: DMA buffer for this request has been mapped via dma_map_single().
*/
struct s3c_hsotg_req {
struct usb_request req;
struct list_head queue;
unsigned char in_progress;
unsigned char mapped;
};
#define call_gadget(_hs, _entry) \
do { \
if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \
(_hs)->driver && (_hs)->driver->_entry) { \
spin_unlock(&_hs->lock); \
(_hs)->driver->_entry(&(_hs)->gadget); \
spin_lock(&_hs->lock); \
} \
} while (0)
struct dwc2_hsotg;
struct dwc2_host_chan;
/* Device States */
enum dwc2_lx_state {
DWC2_L0, /* On state */
DWC2_L1, /* LPM sleep state */
DWC2_L2, /* USB suspend state */
DWC2_L3, /* Off state */
};
/**
* struct dwc2_core_params - Parameters for configuring the core
*
* @otg_cap: Specifies the OTG capabilities.
* 0 - HNP and SRP capable
* 1 - SRP Only capable
* 2 - No HNP/SRP capable (always available)
* Defaults to best available option (0, 1, then 2)
* @otg_ver: OTG version supported
* 0 - 1.3 (default)
* 1 - 2.0
* @dma_enable: Specifies whether to use slave or DMA mode for accessing
* the data FIFOs. The driver will automatically detect the
* value for this parameter if none is specified.
* 0 - Slave (always available)
* 1 - DMA (default, if available)
* @dma_desc_enable: When DMA mode is enabled, specifies whether to use
* address DMA mode or descriptor DMA mode for accessing
* the data FIFOs. The driver will automatically detect the
* value for this if none is specified.
* 0 - Address DMA
* 1 - Descriptor DMA (default, if available)
* @speed: Specifies the maximum speed of operation in host and
* device mode. The actual speed depends on the speed of
* the attached device and the value of phy_type.
* 0 - High Speed
* (default when phy_type is UTMI+ or ULPI)
* 1 - Full Speed
* (default when phy_type is Full Speed)
* @enable_dynamic_fifo: 0 - Use coreConsultant-specified FIFO size parameters
* 1 - Allow dynamic FIFO sizing (default, if available)
* @en_multiple_tx_fifo: Specifies whether dedicated per-endpoint transmit FIFOs
* are enabled
* @host_rx_fifo_size: Number of 4-byte words in the Rx FIFO in host mode when
* dynamic FIFO sizing is enabled
* 16 to 32768
* Actual maximum value is autodetected and also
* the default.
* @host_nperio_tx_fifo_size: Number of 4-byte words in the non-periodic Tx FIFO
* in host mode when dynamic FIFO sizing is enabled
* 16 to 32768
* Actual maximum value is autodetected and also
* the default.
* @host_perio_tx_fifo_size: Number of 4-byte words in the periodic Tx FIFO in
* host mode when dynamic FIFO sizing is enabled
* 16 to 32768
* Actual maximum value is autodetected and also
* the default.
* @max_transfer_size: The maximum transfer size supported, in bytes
* 2047 to 65,535
* Actual maximum value is autodetected and also
* the default.
* @max_packet_count: The maximum number of packets in a transfer
* 15 to 511
* Actual maximum value is autodetected and also
* the default.
* @host_channels: The number of host channel registers to use
* 1 to 16
* Actual maximum value is autodetected and also
* the default.
* @phy_type: Specifies the type of PHY interface to use. By default,
* the driver will automatically detect the phy_type.
* 0 - Full Speed Phy
* 1 - UTMI+ Phy
* 2 - ULPI Phy
* Defaults to best available option (2, 1, then 0)
* @phy_utmi_width: Specifies the UTMI+ Data Width (in bits). This parameter
* is applicable for a phy_type of UTMI+ or ULPI. (For a
* ULPI phy_type, this parameter indicates the data width
* between the MAC and the ULPI Wrapper.) Also, this
* parameter is applicable only if the OTG_HSPHY_WIDTH cC
* parameter was set to "8 and 16 bits", meaning that the
* core has been configured to work at either data path
* width.
* 8 or 16 (default 16 if available)
* @phy_ulpi_ddr: Specifies whether the ULPI operates at double or single
* data rate. This parameter is only applicable if phy_type
* is ULPI.
* 0 - single data rate ULPI interface with 8 bit wide
* data bus (default)
* 1 - double data rate ULPI interface with 4 bit wide
* data bus
* @phy_ulpi_ext_vbus: For a ULPI phy, specifies whether to use the internal or
* external supply to drive the VBus
* 0 - Internal supply (default)
* 1 - External supply
* @i2c_enable: Specifies whether to use the I2Cinterface for a full
* speed PHY. This parameter is only applicable if phy_type
* is FS.
* 0 - No (default)
* 1 - Yes
* @ulpi_fs_ls: Make ULPI phy operate in FS/LS mode only
* 0 - No (default)
* 1 - Yes
* @host_support_fs_ls_low_power: Specifies whether low power mode is supported
* when attached to a Full Speed or Low Speed device in
* host mode.
* 0 - Don't support low power mode (default)
* 1 - Support low power mode
* @host_ls_low_power_phy_clk: Specifies the PHY clock rate in low power mode
* when connected to a Low Speed device in host
* mode. This parameter is applicable only if
* host_support_fs_ls_low_power is enabled.
* 0 - 48 MHz
* (default when phy_type is UTMI+ or ULPI)
* 1 - 6 MHz
* (default when phy_type is Full Speed)
* @ts_dline: Enable Term Select Dline pulsing
* 0 - No (default)
* 1 - Yes
* @reload_ctl: Allow dynamic reloading of HFIR register during runtime
* 0 - No (default for core < 2.92a)
* 1 - Yes (default for core >= 2.92a)
* @ahbcfg: This field allows the default value of the GAHBCFG
* register to be overridden
* -1 - GAHBCFG value will be set to 0x06
* (INCR4, default)
* all others - GAHBCFG value will be overridden with
* this value
* Not all bits can be controlled like this, the
* bits defined by GAHBCFG_CTRL_MASK are controlled
* by the driver and are ignored in this
* configuration value.
* @uframe_sched: True to enable the microframe scheduler
*
* The following parameters may be specified when starting the module. These
* parameters define how the DWC_otg controller should be configured. A
* value of -1 (or any other out of range value) for any parameter means
* to read the value from hardware (if possible) or use the builtin
* default described above.
*/
struct dwc2_core_params {
/*
* Don't add any non-int members here, this will break
* dwc2_set_all_params!
*/
int otg_cap;
int otg_ver;
int dma_enable;
int dma_desc_enable;
int speed;
int enable_dynamic_fifo;
int en_multiple_tx_fifo;
int host_rx_fifo_size;
int host_nperio_tx_fifo_size;
int host_perio_tx_fifo_size;
int max_transfer_size;
int max_packet_count;
int host_channels;
int phy_type;
int phy_utmi_width;
int phy_ulpi_ddr;
int phy_ulpi_ext_vbus;
int i2c_enable;
int ulpi_fs_ls;
int host_support_fs_ls_low_power;
int host_ls_low_power_phy_clk;
int ts_dline;
int reload_ctl;
int ahbcfg;
int uframe_sched;
};
/**
* struct dwc2_hw_params - Autodetected parameters.
*
* These parameters are the various parameters read from hardware
* registers during initialization. They typically contain the best
* supported or maximum value that can be configured in the
* corresponding dwc2_core_params value.
*
* The values that are not in dwc2_core_params are documented below.
*
* @op_mode Mode of Operation
* 0 - HNP- and SRP-Capable OTG (Host & Device)
* 1 - SRP-Capable OTG (Host & Device)
* 2 - Non-HNP and Non-SRP Capable OTG (Host & Device)
* 3 - SRP-Capable Device
* 4 - Non-OTG Device
* 5 - SRP-Capable Host
* 6 - Non-OTG Host
* @arch Architecture
* 0 - Slave only
* 1 - External DMA
* 2 - Internal DMA
* @power_optimized Are power optimizations enabled?
* @num_dev_ep Number of device endpoints available
* @num_dev_perio_in_ep Number of device periodic IN endpoints
* avaialable
* @dev_token_q_depth Device Mode IN Token Sequence Learning Queue
* Depth
* 0 to 30
* @host_perio_tx_q_depth
* Host Mode Periodic Request Queue Depth
* 2, 4 or 8
* @nperio_tx_q_depth
* Non-Periodic Request Queue Depth
* 2, 4 or 8
* @hs_phy_type High-speed PHY interface type
* 0 - High-speed interface not supported
* 1 - UTMI+
* 2 - ULPI
* 3 - UTMI+ and ULPI
* @fs_phy_type Full-speed PHY interface type
* 0 - Full speed interface not supported
* 1 - Dedicated full speed interface
* 2 - FS pins shared with UTMI+ pins
* 3 - FS pins shared with ULPI pins
* @total_fifo_size: Total internal RAM for FIFOs (bytes)
* @utmi_phy_data_width UTMI+ PHY data width
* 0 - 8 bits
* 1 - 16 bits
* 2 - 8 or 16 bits
* @snpsid: Value from SNPSID register
*/
struct dwc2_hw_params {
unsigned op_mode:3;
unsigned arch:2;
unsigned dma_desc_enable:1;
unsigned enable_dynamic_fifo:1;
unsigned en_multiple_tx_fifo:1;
unsigned host_rx_fifo_size:16;
unsigned host_nperio_tx_fifo_size:16;
unsigned host_perio_tx_fifo_size:16;
unsigned nperio_tx_q_depth:3;
unsigned host_perio_tx_q_depth:3;
unsigned dev_token_q_depth:5;
unsigned max_transfer_size:26;
unsigned max_packet_count:11;
unsigned host_channels:5;
unsigned hs_phy_type:2;
unsigned fs_phy_type:2;
unsigned i2c_enable:1;
unsigned num_dev_ep:4;
unsigned num_dev_perio_in_ep:4;
unsigned total_fifo_size:16;
unsigned power_optimized:1;
unsigned utmi_phy_data_width:2;
u32 snpsid;
};
/**
* struct dwc2_hsotg - Holds the state of the driver, including the non-periodic
* and periodic schedules
*
* @dev: The struct device pointer
* @regs: Pointer to controller regs
* @core_params: Parameters that define how the core should be configured
* @hw_params: Parameters that were autodetected from the
* hardware registers
* @op_state: The operational State, during transitions (a_host=>
* a_peripheral and b_device=>b_host) this may not match
* the core, but allows the software to determine
* transitions
* @dr_mode: Requested mode of operation, one of following:
* - USB_DR_MODE_PERIPHERAL
* - USB_DR_MODE_HOST
* - USB_DR_MODE_OTG
* @queuing_high_bandwidth: True if multiple packets of a high-bandwidth
* transfer are in process of being queued
* @srp_success: Stores status of SRP request in the case of a FS PHY
* with an I2C interface
* @wq_otg: Workqueue object used for handling of some interrupts
* @wf_otg: Work object for handling Connector ID Status Change
* interrupt
* @wkp_timer: Timer object for handling Wakeup Detected interrupt
* @lx_state: Lx state of connected device
* @flags: Flags for handling root port state changes
* @non_periodic_sched_inactive: Inactive QHs in the non-periodic schedule.
* Transfers associated with these QHs are not currently
* assigned to a host channel.
* @non_periodic_sched_active: Active QHs in the non-periodic schedule.
* Transfers associated with these QHs are currently
* assigned to a host channel.
* @non_periodic_qh_ptr: Pointer to next QH to process in the active
* non-periodic schedule
* @periodic_sched_inactive: Inactive QHs in the periodic schedule. This is a
* list of QHs for periodic transfers that are _not_
* scheduled for the next frame. Each QH in the list has an
* interval counter that determines when it needs to be
* scheduled for execution. This scheduling mechanism
* allows only a simple calculation for periodic bandwidth
* used (i.e. must assume that all periodic transfers may
* need to execute in the same frame). However, it greatly
* simplifies scheduling and should be sufficient for the
* vast majority of OTG hosts, which need to connect to a
* small number of peripherals at one time. Items move from
* this list to periodic_sched_ready when the QH interval
* counter is 0 at SOF.
* @periodic_sched_ready: List of periodic QHs that are ready for execution in
* the next frame, but have not yet been assigned to host
* channels. Items move from this list to
* periodic_sched_assigned as host channels become
* available during the current frame.
* @periodic_sched_assigned: List of periodic QHs to be executed in the next
* frame that are assigned to host channels. Items move
* from this list to periodic_sched_queued as the
* transactions for the QH are queued to the DWC_otg
* controller.
* @periodic_sched_queued: List of periodic QHs that have been queued for
* execution. Items move from this list to either
* periodic_sched_inactive or periodic_sched_ready when the
* channel associated with the transfer is released. If the
* interval for the QH is 1, the item moves to
* periodic_sched_ready because it must be rescheduled for
* the next frame. Otherwise, the item moves to
* periodic_sched_inactive.
* @periodic_usecs: Total bandwidth claimed so far for periodic transfers.
* This value is in microseconds per (micro)frame. The
* assumption is that all periodic transfers may occur in
* the same (micro)frame.
* @frame_usecs: Internal variable used by the microframe scheduler
* @frame_number: Frame number read from the core at SOF. The value ranges
* from 0 to HFNUM_MAX_FRNUM.
* @periodic_qh_count: Count of periodic QHs, if using several eps. Used for
* SOF enable/disable.
* @free_hc_list: Free host channels in the controller. This is a list of
* struct dwc2_host_chan items.
* @periodic_channels: Number of host channels assigned to periodic transfers.
* Currently assuming that there is a dedicated host
* channel for each periodic transaction and at least one
* host channel is available for non-periodic transactions.
* @non_periodic_channels: Number of host channels assigned to non-periodic
* transfers
* @available_host_channels Number of host channels available for the microframe
* scheduler to use
* @hc_ptr_array: Array of pointers to the host channel descriptors.
* Allows accessing a host channel descriptor given the
* host channel number. This is useful in interrupt
* handlers.
* @status_buf: Buffer used for data received during the status phase of
* a control transfer.
* @status_buf_dma: DMA address for status_buf
* @start_work: Delayed work for handling host A-cable connection
* @reset_work: Delayed work for handling a port reset
* @lock: Spinlock that protects all the driver data structures
* @priv: Stores a pointer to the struct usb_hcd
* @otg_port: OTG port number
* @frame_list: Frame list
* @frame_list_dma: Frame list DMA address
*/
struct dwc2_hsotg {
struct device *dev;
void __iomem *regs;
/** Params detected from hardware */
struct dwc2_hw_params hw_params;
/** Params to actually use */
struct dwc2_core_params *core_params;
enum usb_otg_state op_state;
enum usb_dr_mode dr_mode;
unsigned int queuing_high_bandwidth:1;
unsigned int srp_success:1;
struct workqueue_struct *wq_otg;
struct work_struct wf_otg;
struct timer_list wkp_timer;
enum dwc2_lx_state lx_state;
union dwc2_hcd_internal_flags {
u32 d32;
struct {
unsigned port_connect_status_change:1;
unsigned port_connect_status:1;
unsigned port_reset_change:1;
unsigned port_enable_change:1;
unsigned port_suspend_change:1;
unsigned port_over_current_change:1;
unsigned port_l1_change:1;
unsigned reserved:26;
} b;
} flags;
struct list_head non_periodic_sched_inactive;
struct list_head non_periodic_sched_active;
struct list_head *non_periodic_qh_ptr;
struct list_head periodic_sched_inactive;
struct list_head periodic_sched_ready;
struct list_head periodic_sched_assigned;
struct list_head periodic_sched_queued;
u16 periodic_usecs;
u16 frame_usecs[8];
u16 frame_number;
u16 periodic_qh_count;
#ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS
#define FRAME_NUM_ARRAY_SIZE 1000
u16 last_frame_num;
u16 *frame_num_array;
u16 *last_frame_num_array;
int frame_num_idx;
int dumped_frame_num_array;
#endif
struct list_head free_hc_list;
int periodic_channels;
int non_periodic_channels;
int available_host_channels;
struct dwc2_host_chan *hc_ptr_array[MAX_EPS_CHANNELS];
u8 *status_buf;
dma_addr_t status_buf_dma;
#define DWC2_HCD_STATUS_BUF_SIZE 64
struct delayed_work start_work;
struct delayed_work reset_work;
spinlock_t lock;
void *priv;
u8 otg_port;
u32 *frame_list;
dma_addr_t frame_list_dma;
/* DWC OTG HW Release versions */
#define DWC2_CORE_REV_2_71a 0x4f54271a
#define DWC2_CORE_REV_2_90a 0x4f54290a
#define DWC2_CORE_REV_2_92a 0x4f54292a
#define DWC2_CORE_REV_2_94a 0x4f54294a
#define DWC2_CORE_REV_3_00a 0x4f54300a
#ifdef DEBUG
u32 frrem_samples;
u64 frrem_accum;
u32 hfnum_7_samples_a;
u64 hfnum_7_frrem_accum_a;
u32 hfnum_0_samples_a;
u64 hfnum_0_frrem_accum_a;
u32 hfnum_other_samples_a;
u64 hfnum_other_frrem_accum_a;
u32 hfnum_7_samples_b;
u64 hfnum_7_frrem_accum_b;
u32 hfnum_0_samples_b;
u64 hfnum_0_frrem_accum_b;
u32 hfnum_other_samples_b;
u64 hfnum_other_frrem_accum_b;
#endif
};
/* Reasons for halting a host channel */
enum dwc2_halt_status {
DWC2_HC_XFER_NO_HALT_STATUS,
DWC2_HC_XFER_COMPLETE,
DWC2_HC_XFER_URB_COMPLETE,
DWC2_HC_XFER_ACK,
DWC2_HC_XFER_NAK,
DWC2_HC_XFER_NYET,
DWC2_HC_XFER_STALL,
DWC2_HC_XFER_XACT_ERR,
DWC2_HC_XFER_FRAME_OVERRUN,
DWC2_HC_XFER_BABBLE_ERR,
DWC2_HC_XFER_DATA_TOGGLE_ERR,
DWC2_HC_XFER_AHB_ERR,
DWC2_HC_XFER_PERIODIC_INCOMPLETE,
DWC2_HC_XFER_URB_DEQUEUE,
};
/*
* The following functions support initialization of the core driver component
* and the DWC_otg controller
*/
extern void dwc2_core_host_init(struct dwc2_hsotg *hsotg);
/*
* Host core Functions.
* The following functions support managing the DWC_otg controller in host
* mode.
*/
extern void dwc2_hc_init(struct dwc2_hsotg *hsotg, struct dwc2_host_chan *chan);
extern void dwc2_hc_halt(struct dwc2_hsotg *hsotg, struct dwc2_host_chan *chan,
enum dwc2_halt_status halt_status);
extern void dwc2_hc_cleanup(struct dwc2_hsotg *hsotg,
struct dwc2_host_chan *chan);
extern void dwc2_hc_start_transfer(struct dwc2_hsotg *hsotg,
struct dwc2_host_chan *chan);
extern void dwc2_hc_start_transfer_ddma(struct dwc2_hsotg *hsotg,
struct dwc2_host_chan *chan);
extern int dwc2_hc_continue_transfer(struct dwc2_hsotg *hsotg,
struct dwc2_host_chan *chan);
extern void dwc2_hc_do_ping(struct dwc2_hsotg *hsotg,
struct dwc2_host_chan *chan);
extern void dwc2_enable_host_interrupts(struct dwc2_hsotg *hsotg);
extern void dwc2_disable_host_interrupts(struct dwc2_hsotg *hsotg);
extern u32 dwc2_calc_frame_interval(struct dwc2_hsotg *hsotg);
extern bool dwc2_is_controller_alive(struct dwc2_hsotg *hsotg);
/*
* Common core Functions.
* The following functions support managing the DWC_otg controller in either
* device or host mode.
*/
extern void dwc2_read_packet(struct dwc2_hsotg *hsotg, u8 *dest, u16 bytes);
extern void dwc2_flush_tx_fifo(struct dwc2_hsotg *hsotg, const int num);
extern void dwc2_flush_rx_fifo(struct dwc2_hsotg *hsotg);
extern int dwc2_core_init(struct dwc2_hsotg *hsotg, bool select_phy, int irq);
extern void dwc2_enable_global_interrupts(struct dwc2_hsotg *hcd);
extern void dwc2_disable_global_interrupts(struct dwc2_hsotg *hcd);
/* This function should be called on every hardware interrupt. */
extern irqreturn_t dwc2_handle_common_intr(int irq, void *dev);
/* OTG Core Parameters */
/*
* Specifies the OTG capabilities. The driver will automatically
* detect the value for this parameter if none is specified.
* 0 - HNP and SRP capable (default)
* 1 - SRP Only capable
* 2 - No HNP/SRP capable
*/
extern void dwc2_set_param_otg_cap(struct dwc2_hsotg *hsotg, int val);
#define DWC2_CAP_PARAM_HNP_SRP_CAPABLE 0
#define DWC2_CAP_PARAM_SRP_ONLY_CAPABLE 1
#define DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE 2
/*
* Specifies whether to use slave or DMA mode for accessing the data
* FIFOs. The driver will automatically detect the value for this
* parameter if none is specified.
* 0 - Slave
* 1 - DMA (default, if available)
*/
extern void dwc2_set_param_dma_enable(struct dwc2_hsotg *hsotg, int val);
/*
* When DMA mode is enabled specifies whether to use
* address DMA or DMA Descritor mode for accessing the data
* FIFOs in device mode. The driver will automatically detect
* the value for this parameter if none is specified.
* 0 - address DMA
* 1 - DMA Descriptor(default, if available)
*/
extern void dwc2_set_param_dma_desc_enable(struct dwc2_hsotg *hsotg, int val);
/*
* Specifies the maximum speed of operation in host and device mode.
* The actual speed depends on the speed of the attached device and
* the value of phy_type. The actual speed depends on the speed of the
* attached device.
* 0 - High Speed (default)
* 1 - Full Speed
*/
extern void dwc2_set_param_speed(struct dwc2_hsotg *hsotg, int val);
#define DWC2_SPEED_PARAM_HIGH 0
#define DWC2_SPEED_PARAM_FULL 1
/*
* Specifies whether low power mode is supported when attached
* to a Full Speed or Low Speed device in host mode.
*
* 0 - Don't support low power mode (default)
* 1 - Support low power mode
*/
extern void dwc2_set_param_host_support_fs_ls_low_power(
struct dwc2_hsotg *hsotg, int val);
/*
* Specifies the PHY clock rate in low power mode when connected to a
* Low Speed device in host mode. This parameter is applicable only if
* HOST_SUPPORT_FS_LS_LOW_POWER is enabled. If PHY_TYPE is set to FS
* then defaults to 6 MHZ otherwise 48 MHZ.
*
* 0 - 48 MHz
* 1 - 6 MHz
*/
extern void dwc2_set_param_host_ls_low_power_phy_clk(struct dwc2_hsotg *hsotg,
int val);
#define DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ 0
#define DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ 1
/*
* 0 - Use cC FIFO size parameters
* 1 - Allow dynamic FIFO sizing (default)
*/
extern void dwc2_set_param_enable_dynamic_fifo(struct dwc2_hsotg *hsotg,
int val);
/*
* Number of 4-byte words in the Rx FIFO in host mode when dynamic
* FIFO sizing is enabled.
* 16 to 32768 (default 1024)
*/
extern void dwc2_set_param_host_rx_fifo_size(struct dwc2_hsotg *hsotg, int val);
/*
* Number of 4-byte words in the non-periodic Tx FIFO in host mode
* when Dynamic FIFO sizing is enabled in the core.
* 16 to 32768 (default 256)
*/
extern void dwc2_set_param_host_nperio_tx_fifo_size(struct dwc2_hsotg *hsotg,
int val);
/*
* Number of 4-byte words in the host periodic Tx FIFO when dynamic
* FIFO sizing is enabled.
* 16 to 32768 (default 256)
*/
extern void dwc2_set_param_host_perio_tx_fifo_size(struct dwc2_hsotg *hsotg,
int val);
/*
* The maximum transfer size supported in bytes.
* 2047 to 65,535 (default 65,535)
*/
extern void dwc2_set_param_max_transfer_size(struct dwc2_hsotg *hsotg, int val);
/*
* The maximum number of packets in a transfer.
* 15 to 511 (default 511)
*/
extern void dwc2_set_param_max_packet_count(struct dwc2_hsotg *hsotg, int val);
/*
* The number of host channel registers to use.
* 1 to 16 (default 11)
* Note: The FPGA configuration supports a maximum of 11 host channels.
*/
extern void dwc2_set_param_host_channels(struct dwc2_hsotg *hsotg, int val);
/*
* Specifies the type of PHY interface to use. By default, the driver
* will automatically detect the phy_type.
*
* 0 - Full Speed PHY
* 1 - UTMI+ (default)
* 2 - ULPI
*/
extern void dwc2_set_param_phy_type(struct dwc2_hsotg *hsotg, int val);
#define DWC2_PHY_TYPE_PARAM_FS 0
#define DWC2_PHY_TYPE_PARAM_UTMI 1
#define DWC2_PHY_TYPE_PARAM_ULPI 2
/*
* Specifies the UTMI+ Data Width. This parameter is
* applicable for a PHY_TYPE of UTMI+ or ULPI. (For a ULPI
* PHY_TYPE, this parameter indicates the data width between
* the MAC and the ULPI Wrapper.) Also, this parameter is
* applicable only if the OTG_HSPHY_WIDTH cC parameter was set
* to "8 and 16 bits", meaning that the core has been
* configured to work at either data path width.
*
* 8 or 16 bits (default 16)
*/
extern void dwc2_set_param_phy_utmi_width(struct dwc2_hsotg *hsotg, int val);
/*
* Specifies whether the ULPI operates at double or single
* data rate. This parameter is only applicable if PHY_TYPE is
* ULPI.
*
* 0 - single data rate ULPI interface with 8 bit wide data
* bus (default)
* 1 - double data rate ULPI interface with 4 bit wide data
* bus
*/
extern void dwc2_set_param_phy_ulpi_ddr(struct dwc2_hsotg *hsotg, int val);
/*
* Specifies whether to use the internal or external supply to
* drive the vbus with a ULPI phy.
*/
extern void dwc2_set_param_phy_ulpi_ext_vbus(struct dwc2_hsotg *hsotg, int val);
#define DWC2_PHY_ULPI_INTERNAL_VBUS 0
#define DWC2_PHY_ULPI_EXTERNAL_VBUS 1
/*
* Specifies whether to use the I2Cinterface for full speed PHY. This
* parameter is only applicable if PHY_TYPE is FS.
* 0 - No (default)
* 1 - Yes
*/
extern void dwc2_set_param_i2c_enable(struct dwc2_hsotg *hsotg, int val);
extern void dwc2_set_param_ulpi_fs_ls(struct dwc2_hsotg *hsotg, int val);
extern void dwc2_set_param_ts_dline(struct dwc2_hsotg *hsotg, int val);
/*
* Specifies whether dedicated transmit FIFOs are
* enabled for non periodic IN endpoints in device mode
* 0 - No
* 1 - Yes
*/
extern void dwc2_set_param_en_multiple_tx_fifo(struct dwc2_hsotg *hsotg,
int val);
extern void dwc2_set_param_reload_ctl(struct dwc2_hsotg *hsotg, int val);
extern void dwc2_set_param_ahbcfg(struct dwc2_hsotg *hsotg, int val);
extern void dwc2_set_param_otg_ver(struct dwc2_hsotg *hsotg, int val);
/*
* Dump core registers and SPRAM
*/
extern void dwc2_dump_dev_registers(struct dwc2_hsotg *hsotg);
extern void dwc2_dump_host_registers(struct dwc2_hsotg *hsotg);
extern void dwc2_dump_global_registers(struct dwc2_hsotg *hsotg);
/*
* Return OTG version - either 1.3 or 2.0
*/
extern u16 dwc2_get_otg_version(struct dwc2_hsotg *hsotg);
#endif /* __DWC2_CORE_H__ */
Reference in New Issue View Git Blame Copy Permalink