/* * 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 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