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linux/drivers/ieee1394/ohci1394.h
Ben Collins 4611ed3803 ohci1394: set address range properties 
This patch supplies the API extension introduced by patch
"ieee1394: extend lowlevel API for address range properties"
with proper addresses.

Like in patch ''ohci1394, sbp2: fix "scsi_add_device failed"
with PL-3507 based devices'', 1 TeraByte is chosen as physical
upper bound.  This leaves a window for the middle address range.
This choice is only relevant for adapters which actually have a
programmable pysical upper bound register.  (Only ALi and
Fujitsu adapters are known for this.  Most adapters have a fixed
bound at 4 GB.)  The middle address range is suitable for posted
writes.

AFAIK, PCILynx does not support physical DMA nor posted writes,
therefore no equivalent change in the pcilynx driver is necessary.
There is also a driver for GP2Lynx, although not in mainline Linux.
I assume this hardware does not support these OHCI features either.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
2006-06-12 18:13:32 -04:00

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/*
* ohci1394.h - driver for OHCI 1394 boards
* Copyright (C)1999,2000 Sebastien Rougeaux <sebastien.rougeaux@anu.edu.au>
* Gord Peters <GordPeters@smarttech.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _OHCI1394_H
#define _OHCI1394_H
#include "ieee1394_types.h"
#include <asm/io.h>
#define OHCI1394_DRIVER_NAME "ohci1394"
#define OHCI1394_MAX_AT_REQ_RETRIES 0x2
#define OHCI1394_MAX_AT_RESP_RETRIES 0x2
#define OHCI1394_MAX_PHYS_RESP_RETRIES 0x8
#define OHCI1394_MAX_SELF_ID_ERRORS 16
#define AR_REQ_NUM_DESC 4 /* number of AR req descriptors */
#define AR_REQ_BUF_SIZE PAGE_SIZE /* size of AR req buffers */
#define AR_REQ_SPLIT_BUF_SIZE PAGE_SIZE /* split packet buffer */
#define AR_RESP_NUM_DESC 4 /* number of AR resp descriptors */
#define AR_RESP_BUF_SIZE PAGE_SIZE /* size of AR resp buffers */
#define AR_RESP_SPLIT_BUF_SIZE PAGE_SIZE /* split packet buffer */
#define IR_NUM_DESC 16 /* number of IR descriptors */
#define IR_BUF_SIZE PAGE_SIZE /* 4096 bytes/buffer */
#define IR_SPLIT_BUF_SIZE PAGE_SIZE /* split packet buffer */
#define IT_NUM_DESC 16 /* number of IT descriptors */
#define AT_REQ_NUM_DESC 32 /* number of AT req descriptors */
#define AT_RESP_NUM_DESC 32 /* number of AT resp descriptors */
#define OHCI_LOOP_COUNT 100 /* Number of loops for reg read waits */
#define OHCI_CONFIG_ROM_LEN 1024 /* Length of the mapped configrom space */
#define OHCI1394_SI_DMA_BUF_SIZE 8192 /* length of the selfid buffer */
/* PCI configuration space addresses */
#define OHCI1394_PCI_HCI_Control 0x40
struct dma_cmd {
u32 control;
u32 address;
u32 branchAddress;
u32 status;
};
/*
* FIXME:
* It is important that a single at_dma_prg does not cross a page boundary
* The proper way to do it would be to do the check dynamically as the
* programs are inserted into the AT fifo.
*/
struct at_dma_prg {
struct dma_cmd begin;
quadlet_t data[4];
struct dma_cmd end;
quadlet_t pad[4]; /* FIXME: quick hack for memory alignment */
};
/* identify whether a DMA context is asynchronous or isochronous */
enum context_type { DMA_CTX_ASYNC_REQ, DMA_CTX_ASYNC_RESP, DMA_CTX_ISO };
/* DMA receive context */
struct dma_rcv_ctx {
struct ti_ohci *ohci;
enum context_type type;
int ctx;
unsigned int num_desc;
unsigned int buf_size;
unsigned int split_buf_size;
/* dma block descriptors */
struct dma_cmd **prg_cpu;
dma_addr_t *prg_bus;
struct pci_pool *prg_pool;
/* dma buffers */
quadlet_t **buf_cpu;
dma_addr_t *buf_bus;
unsigned int buf_ind;
unsigned int buf_offset;
quadlet_t *spb;
spinlock_t lock;
struct tasklet_struct task;
int ctrlClear;
int ctrlSet;
int cmdPtr;
int ctxtMatch;
};
/* DMA transmit context */
struct dma_trm_ctx {
struct ti_ohci *ohci;
enum context_type type;
int ctx;
unsigned int num_desc;
/* dma block descriptors */
struct at_dma_prg **prg_cpu;
dma_addr_t *prg_bus;
struct pci_pool *prg_pool;
unsigned int prg_ind;
unsigned int sent_ind;
int free_prgs;
quadlet_t *branchAddrPtr;
/* list of packets inserted in the AT FIFO */
struct list_head fifo_list;
/* list of pending packets to be inserted in the AT FIFO */
struct list_head pending_list;
spinlock_t lock;
struct tasklet_struct task;
int ctrlClear;
int ctrlSet;
int cmdPtr;
};
struct ohci1394_iso_tasklet {
struct tasklet_struct tasklet;
struct list_head link;
int context;
enum { OHCI_ISO_TRANSMIT, OHCI_ISO_RECEIVE,
OHCI_ISO_MULTICHANNEL_RECEIVE } type;
};
struct ti_ohci {
struct pci_dev *dev;
enum {
OHCI_INIT_ALLOC_HOST,
OHCI_INIT_HAVE_MEM_REGION,
OHCI_INIT_HAVE_IOMAPPING,
OHCI_INIT_HAVE_CONFIG_ROM_BUFFER,
OHCI_INIT_HAVE_SELFID_BUFFER,
OHCI_INIT_HAVE_TXRX_BUFFERS__MAYBE,
OHCI_INIT_HAVE_IRQ,
OHCI_INIT_DONE,
} init_state;
/* remapped memory spaces */
void __iomem *registers;
/* dma buffer for self-id packets */
quadlet_t *selfid_buf_cpu;
dma_addr_t selfid_buf_bus;
/* buffer for csr config rom */
quadlet_t *csr_config_rom_cpu;
dma_addr_t csr_config_rom_bus;
int csr_config_rom_length;
unsigned int max_packet_size;
/* async receive */
struct dma_rcv_ctx ar_resp_context;
struct dma_rcv_ctx ar_req_context;
/* async transmit */
struct dma_trm_ctx at_resp_context;
struct dma_trm_ctx at_req_context;
/* iso receive */
int nb_iso_rcv_ctx;
unsigned long ir_ctx_usage; /* use test_and_set_bit() for atomicity */
unsigned long ir_multichannel_used; /* ditto */
spinlock_t IR_channel_lock;
/* iso receive (legacy API) */
u64 ir_legacy_channels; /* note: this differs from ISO_channel_usage;
it only accounts for channels listened to
by the legacy API, so that we can know when
it is safe to free the legacy API context */
struct dma_rcv_ctx ir_legacy_context;
struct ohci1394_iso_tasklet ir_legacy_tasklet;
/* iso transmit */
int nb_iso_xmit_ctx;
unsigned long it_ctx_usage; /* use test_and_set_bit() for atomicity */
/* iso transmit (legacy API) */
struct dma_trm_ctx it_legacy_context;
struct ohci1394_iso_tasklet it_legacy_tasklet;
u64 ISO_channel_usage;
/* IEEE-1394 part follows */
struct hpsb_host *host;
int phyid, isroot;
spinlock_t phy_reg_lock;
spinlock_t event_lock;
int self_id_errors;
/* Tasklets for iso receive and transmit, used by video1394
* and dv1394 */
struct list_head iso_tasklet_list;
spinlock_t iso_tasklet_list_lock;
/* Swap the selfid buffer? */
unsigned int selfid_swap:1;
/* Some Apple chipset seem to swap incoming headers for us */
unsigned int no_swap_incoming:1;
/* Force extra paranoia checking on bus-reset handling */
unsigned int check_busreset:1;
};
static inline int cross_bound(unsigned long addr, unsigned int size)
{
if (size == 0)
return 0;
if (size > PAGE_SIZE)
return 1;
if (addr >> PAGE_SHIFT != (addr + size - 1) >> PAGE_SHIFT)
return 1;
return 0;
}
/*
* Register read and write helper functions.
*/
static inline void reg_write(const struct ti_ohci *ohci, int offset, u32 data)
{
writel(data, ohci->registers + offset);
}
static inline u32 reg_read(const struct ti_ohci *ohci, int offset)
{
return readl(ohci->registers + offset);
}
/* 2 KiloBytes of register space */
#define OHCI1394_REGISTER_SIZE 0x800
/* Offsets relative to context bases defined below */
#define OHCI1394_ContextControlSet 0x000
#define OHCI1394_ContextControlClear 0x004
#define OHCI1394_ContextCommandPtr 0x00C
/* register map */
#define OHCI1394_Version 0x000
#define OHCI1394_GUID_ROM 0x004
#define OHCI1394_ATRetries 0x008
#define OHCI1394_CSRData 0x00C
#define OHCI1394_CSRCompareData 0x010
#define OHCI1394_CSRControl 0x014
#define OHCI1394_ConfigROMhdr 0x018
#define OHCI1394_BusID 0x01C
#define OHCI1394_BusOptions 0x020
#define OHCI1394_GUIDHi 0x024
#define OHCI1394_GUIDLo 0x028
#define OHCI1394_ConfigROMmap 0x034
#define OHCI1394_PostedWriteAddressLo 0x038
#define OHCI1394_PostedWriteAddressHi 0x03C
#define OHCI1394_VendorID 0x040
#define OHCI1394_HCControlSet 0x050
#define OHCI1394_HCControlClear 0x054
#define OHCI1394_HCControl_noByteSwap 0x40000000
#define OHCI1394_HCControl_programPhyEnable 0x00800000
#define OHCI1394_HCControl_aPhyEnhanceEnable 0x00400000
#define OHCI1394_HCControl_LPS 0x00080000
#define OHCI1394_HCControl_postedWriteEnable 0x00040000
#define OHCI1394_HCControl_linkEnable 0x00020000
#define OHCI1394_HCControl_softReset 0x00010000
#define OHCI1394_SelfIDBuffer 0x064
#define OHCI1394_SelfIDCount 0x068
#define OHCI1394_IRMultiChanMaskHiSet 0x070
#define OHCI1394_IRMultiChanMaskHiClear 0x074
#define OHCI1394_IRMultiChanMaskLoSet 0x078
#define OHCI1394_IRMultiChanMaskLoClear 0x07C
#define OHCI1394_IntEventSet 0x080
#define OHCI1394_IntEventClear 0x084
#define OHCI1394_IntMaskSet 0x088
#define OHCI1394_IntMaskClear 0x08C
#define OHCI1394_IsoXmitIntEventSet 0x090
#define OHCI1394_IsoXmitIntEventClear 0x094
#define OHCI1394_IsoXmitIntMaskSet 0x098
#define OHCI1394_IsoXmitIntMaskClear 0x09C
#define OHCI1394_IsoRecvIntEventSet 0x0A0
#define OHCI1394_IsoRecvIntEventClear 0x0A4
#define OHCI1394_IsoRecvIntMaskSet 0x0A8
#define OHCI1394_IsoRecvIntMaskClear 0x0AC
#define OHCI1394_InitialBandwidthAvailable 0x0B0
#define OHCI1394_InitialChannelsAvailableHi 0x0B4
#define OHCI1394_InitialChannelsAvailableLo 0x0B8
#define OHCI1394_FairnessControl 0x0DC
#define OHCI1394_LinkControlSet 0x0E0
#define OHCI1394_LinkControlClear 0x0E4
#define OHCI1394_LinkControl_RcvSelfID 0x00000200
#define OHCI1394_LinkControl_RcvPhyPkt 0x00000400
#define OHCI1394_LinkControl_CycleTimerEnable 0x00100000
#define OHCI1394_LinkControl_CycleMaster 0x00200000
#define OHCI1394_LinkControl_CycleSource 0x00400000
#define OHCI1394_NodeID 0x0E8
#define OHCI1394_PhyControl 0x0EC
#define OHCI1394_IsochronousCycleTimer 0x0F0
#define OHCI1394_AsReqFilterHiSet 0x100
#define OHCI1394_AsReqFilterHiClear 0x104
#define OHCI1394_AsReqFilterLoSet 0x108
#define OHCI1394_AsReqFilterLoClear 0x10C
#define OHCI1394_PhyReqFilterHiSet 0x110
#define OHCI1394_PhyReqFilterHiClear 0x114
#define OHCI1394_PhyReqFilterLoSet 0x118
#define OHCI1394_PhyReqFilterLoClear 0x11C
#define OHCI1394_PhyUpperBound 0x120
#define OHCI1394_AsReqTrContextBase 0x180
#define OHCI1394_AsReqTrContextControlSet 0x180
#define OHCI1394_AsReqTrContextControlClear 0x184
#define OHCI1394_AsReqTrCommandPtr 0x18C
#define OHCI1394_AsRspTrContextBase 0x1A0
#define OHCI1394_AsRspTrContextControlSet 0x1A0
#define OHCI1394_AsRspTrContextControlClear 0x1A4
#define OHCI1394_AsRspTrCommandPtr 0x1AC
#define OHCI1394_AsReqRcvContextBase 0x1C0
#define OHCI1394_AsReqRcvContextControlSet 0x1C0
#define OHCI1394_AsReqRcvContextControlClear 0x1C4
#define OHCI1394_AsReqRcvCommandPtr 0x1CC
#define OHCI1394_AsRspRcvContextBase 0x1E0
#define OHCI1394_AsRspRcvContextControlSet 0x1E0
#define OHCI1394_AsRspRcvContextControlClear 0x1E4
#define OHCI1394_AsRspRcvCommandPtr 0x1EC
/* Isochronous transmit registers */
/* Add (16 * n) for context n */
#define OHCI1394_IsoXmitContextBase 0x200
#define OHCI1394_IsoXmitContextControlSet 0x200
#define OHCI1394_IsoXmitContextControlClear 0x204
#define OHCI1394_IsoXmitCommandPtr 0x20C
/* Isochronous receive registers */
/* Add (32 * n) for context n */
#define OHCI1394_IsoRcvContextBase 0x400
#define OHCI1394_IsoRcvContextControlSet 0x400
#define OHCI1394_IsoRcvContextControlClear 0x404
#define OHCI1394_IsoRcvCommandPtr 0x40C
#define OHCI1394_IsoRcvContextMatch 0x410
/* Interrupts Mask/Events */
#define OHCI1394_reqTxComplete 0x00000001
#define OHCI1394_respTxComplete 0x00000002
#define OHCI1394_ARRQ 0x00000004
#define OHCI1394_ARRS 0x00000008
#define OHCI1394_RQPkt 0x00000010
#define OHCI1394_RSPkt 0x00000020
#define OHCI1394_isochTx 0x00000040
#define OHCI1394_isochRx 0x00000080
#define OHCI1394_postedWriteErr 0x00000100
#define OHCI1394_lockRespErr 0x00000200
#define OHCI1394_selfIDComplete 0x00010000
#define OHCI1394_busReset 0x00020000
#define OHCI1394_phy 0x00080000
#define OHCI1394_cycleSynch 0x00100000
#define OHCI1394_cycle64Seconds 0x00200000
#define OHCI1394_cycleLost 0x00400000
#define OHCI1394_cycleInconsistent 0x00800000
#define OHCI1394_unrecoverableError 0x01000000
#define OHCI1394_cycleTooLong 0x02000000
#define OHCI1394_phyRegRcvd 0x04000000
#define OHCI1394_masterIntEnable 0x80000000
/* DMA Control flags */
#define DMA_CTL_OUTPUT_MORE 0x00000000
#define DMA_CTL_OUTPUT_LAST 0x10000000
#define DMA_CTL_INPUT_MORE 0x20000000
#define DMA_CTL_INPUT_LAST 0x30000000
#define DMA_CTL_UPDATE 0x08000000
#define DMA_CTL_IMMEDIATE 0x02000000
#define DMA_CTL_IRQ 0x00300000
#define DMA_CTL_BRANCH 0x000c0000
#define DMA_CTL_WAIT 0x00030000
/* OHCI evt_* error types, table 3-2 of the OHCI 1.1 spec. */
#define EVT_NO_STATUS 0x0 /* No event status */
#define EVT_RESERVED_A 0x1 /* Reserved, not used !!! */
#define EVT_LONG_PACKET 0x2 /* The revc data was longer than the buf */
#define EVT_MISSING_ACK 0x3 /* A subaction gap was detected before an ack
arrived, or recv'd ack had a parity error */
#define EVT_UNDERRUN 0x4 /* Underrun on corresponding FIFO, packet
truncated */
#define EVT_OVERRUN 0x5 /* A recv FIFO overflowed on reception of ISO
packet */
#define EVT_DESCRIPTOR_READ 0x6 /* An unrecoverable error occurred while host was
reading a descriptor block */
#define EVT_DATA_READ 0x7 /* An error occurred while host controller was
attempting to read from host memory in the data
stage of descriptor processing */
#define EVT_DATA_WRITE 0x8 /* An error occurred while host controller was
attempting to write either during the data stage
of descriptor processing, or when processing a single
16-bit host memory write */
#define EVT_BUS_RESET 0x9 /* Identifies a PHY packet in the recv buffer as
being a synthesized bus reset packet */
#define EVT_TIMEOUT 0xa /* Indicates that the asynchronous transmit response
packet expired and was not transmitted, or that an
IT DMA context experienced a skip processing overflow */
#define EVT_TCODE_ERR 0xb /* A bad tCode is associated with this packet.
The packet was flushed */
#define EVT_RESERVED_B 0xc /* Reserved, not used !!! */
#define EVT_RESERVED_C 0xd /* Reserved, not used !!! */
#define EVT_UNKNOWN 0xe /* An error condition has occurred that cannot be
represented by any other event codes defined herein. */
#define EVT_FLUSHED 0xf /* Send by the link side of output FIFO when asynchronous
packets are being flushed due to a bus reset. */
#define OHCI1394_TCODE_PHY 0xE
/* Node offset map (phys DMA area, posted write area).
* The value of OHCI1394_PHYS_UPPER_BOUND_PROGRAMMED may be modified but must
* be lower than OHCI1394_MIDDLE_ADDRESS_SPACE.
* OHCI1394_PHYS_UPPER_BOUND_FIXED and OHCI1394_MIDDLE_ADDRESS_SPACE are
* constants given by the OHCI spec.
*/
#define OHCI1394_PHYS_UPPER_BOUND_FIXED 0x000100000000ULL /* 4 GB */
#define OHCI1394_PHYS_UPPER_BOUND_PROGRAMMED 0x010000000000ULL /* 1 TB */
#define OHCI1394_MIDDLE_ADDRESS_SPACE 0xffff00000000ULL
void ohci1394_init_iso_tasklet(struct ohci1394_iso_tasklet *tasklet,
int type,
void (*func)(unsigned long),
unsigned long data);
int ohci1394_register_iso_tasklet(struct ti_ohci *ohci,
struct ohci1394_iso_tasklet *tasklet);
void ohci1394_unregister_iso_tasklet(struct ti_ohci *ohci,
struct ohci1394_iso_tasklet *tasklet);
/* returns zero if successful, one if DMA context is locked up */
int ohci1394_stop_context (struct ti_ohci *ohci, int reg, char *msg);
struct ti_ohci *ohci1394_get_struct(int card_num);
#endif
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