470 lines
16 KiB
C
470 lines
16 KiB
C
#ifndef __PCILYNX_H__
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#define __PCILYNX_H__
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#include <linux/config.h>
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#define PCILYNX_DRIVER_NAME "pcilynx"
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#define PCILYNX_MAJOR 177
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#define PCILYNX_MINOR_AUX_START 0
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#define PCILYNX_MINOR_ROM_START 16
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#define PCILYNX_MINOR_RAM_START 32
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#define PCILYNX_MAX_REGISTER 0xfff
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#define PCILYNX_MAX_MEMORY 0xffff
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#define PCI_DEVICE_ID_TI_PCILYNX 0x8000
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#define MAX_PCILYNX_CARDS 4
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#define LOCALRAM_SIZE 4096
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#define NUM_ISORCV_PCL 4
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#define MAX_ISORCV_SIZE 2048
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#define ISORCV_PER_PAGE (PAGE_SIZE / MAX_ISORCV_SIZE)
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#define ISORCV_PAGES (NUM_ISORCV_PCL / ISORCV_PER_PAGE)
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#define CHANNEL_LOCALBUS 0
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#define CHANNEL_ASYNC_RCV 1
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#define CHANNEL_ISO_RCV 2
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#define CHANNEL_ASYNC_SEND 3
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#define CHANNEL_ISO_SEND 4
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#define PCILYNX_CONFIG_ROM_LENGTH 1024
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typedef int pcl_t;
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struct ti_lynx {
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int id; /* sequential card number */
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spinlock_t lock;
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struct pci_dev *dev;
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struct {
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unsigned reg_1394a:1;
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u32 vendor;
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u32 product;
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} phyic;
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enum { clear, have_intr, have_aux_buf, have_pcl_mem,
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have_1394_buffers, have_iomappings, is_host } state;
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/* remapped memory spaces */
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void __iomem *registers;
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void __iomem *local_rom;
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void __iomem *local_ram;
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void __iomem *aux_port;
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quadlet_t bus_info_block[5];
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/*
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* use local RAM of LOCALRAM_SIZE bytes for PCLs, which allows for
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* LOCALRAM_SIZE * 8 PCLs (each sized 128 bytes);
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* the following is an allocation bitmap
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*/
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u8 pcl_bmap[LOCALRAM_SIZE / 1024];
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/* point to PCLs memory area if needed */
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void *pcl_mem;
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dma_addr_t pcl_mem_dma;
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/* PCLs for local mem / aux transfers */
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pcl_t dmem_pcl;
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/* IEEE-1394 part follows */
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struct hpsb_host *host;
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int phyid, isroot;
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int selfid_size;
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int phy_reg0;
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spinlock_t phy_reg_lock;
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pcl_t rcv_pcl_start, rcv_pcl;
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void *rcv_page;
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dma_addr_t rcv_page_dma;
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int rcv_active;
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struct lynx_send_data {
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pcl_t pcl_start, pcl;
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struct list_head queue;
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struct list_head pcl_queue; /* this queue contains at most one packet */
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spinlock_t queue_lock;
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dma_addr_t header_dma, data_dma;
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int channel;
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} async, iso_send;
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struct {
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pcl_t pcl[NUM_ISORCV_PCL];
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u32 stat[NUM_ISORCV_PCL];
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void *page[ISORCV_PAGES];
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dma_addr_t page_dma[ISORCV_PAGES];
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pcl_t pcl_start;
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int chan_count;
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int next, last, used, running;
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struct tasklet_struct tq;
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spinlock_t lock;
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} iso_rcv;
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u32 i2c_driven_state; /* the state we currently drive the Serial EEPROM Control register */
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};
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/* the per-file data structure for mem space access */
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struct memdata {
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struct ti_lynx *lynx;
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int cid;
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atomic_t aux_intr_last_seen;
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/* enum values are the same as LBUS_ADDR_SEL_* values below */
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enum { rom = 0x10000, aux = 0x20000, ram = 0 } type;
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};
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/*
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* Register read and write helper functions.
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*/
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static inline void reg_write(const struct ti_lynx *lynx, int offset, u32 data)
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{
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writel(data, lynx->registers + offset);
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}
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static inline u32 reg_read(const struct ti_lynx *lynx, int offset)
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{
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return readl(lynx->registers + offset);
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}
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static inline void reg_set_bits(const struct ti_lynx *lynx, int offset,
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u32 mask)
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{
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reg_write(lynx, offset, (reg_read(lynx, offset) | mask));
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}
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static inline void reg_clear_bits(const struct ti_lynx *lynx, int offset,
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u32 mask)
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{
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reg_write(lynx, offset, (reg_read(lynx, offset) & ~mask));
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}
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/* chip register definitions follow */
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#define PCI_LATENCY_CACHELINE 0x0c
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#define MISC_CONTROL 0x40
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#define MISC_CONTROL_SWRESET (1<<0)
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#define SERIAL_EEPROM_CONTROL 0x44
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#define PCI_INT_STATUS 0x48
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#define PCI_INT_ENABLE 0x4c
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/* status and enable have identical bit numbers */
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#define PCI_INT_INT_PEND (1<<31)
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#define PCI_INT_FORCED_INT (1<<30)
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#define PCI_INT_SLV_ADR_PERR (1<<28)
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#define PCI_INT_SLV_DAT_PERR (1<<27)
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#define PCI_INT_MST_DAT_PERR (1<<26)
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#define PCI_INT_MST_DEV_TIMEOUT (1<<25)
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#define PCI_INT_INTERNAL_SLV_TIMEOUT (1<<23)
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#define PCI_INT_AUX_TIMEOUT (1<<18)
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#define PCI_INT_AUX_INT (1<<17)
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#define PCI_INT_1394 (1<<16)
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#define PCI_INT_DMA4_PCL (1<<9)
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#define PCI_INT_DMA4_HLT (1<<8)
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#define PCI_INT_DMA3_PCL (1<<7)
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#define PCI_INT_DMA3_HLT (1<<6)
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#define PCI_INT_DMA2_PCL (1<<5)
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#define PCI_INT_DMA2_HLT (1<<4)
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#define PCI_INT_DMA1_PCL (1<<3)
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#define PCI_INT_DMA1_HLT (1<<2)
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#define PCI_INT_DMA0_PCL (1<<1)
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#define PCI_INT_DMA0_HLT (1<<0)
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/* all DMA interrupts combined: */
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#define PCI_INT_DMA_ALL 0x3ff
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#define PCI_INT_DMA_HLT(chan) (1 << (chan * 2))
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#define PCI_INT_DMA_PCL(chan) (1 << (chan * 2 + 1))
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#define LBUS_ADDR 0xb4
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#define LBUS_ADDR_SEL_RAM (0x0<<16)
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#define LBUS_ADDR_SEL_ROM (0x1<<16)
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#define LBUS_ADDR_SEL_AUX (0x2<<16)
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#define LBUS_ADDR_SEL_ZV (0x3<<16)
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#define GPIO_CTRL_A 0xb8
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#define GPIO_CTRL_B 0xbc
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#define GPIO_DATA_BASE 0xc0
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#define DMA_BREG(base, chan) (base + chan * 0x20)
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#define DMA_SREG(base, chan) (base + chan * 0x10)
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#define DMA0_PREV_PCL 0x100
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#define DMA1_PREV_PCL 0x120
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#define DMA2_PREV_PCL 0x140
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#define DMA3_PREV_PCL 0x160
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#define DMA4_PREV_PCL 0x180
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#define DMA_PREV_PCL(chan) (DMA_BREG(DMA0_PREV_PCL, chan))
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#define DMA0_CURRENT_PCL 0x104
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#define DMA1_CURRENT_PCL 0x124
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#define DMA2_CURRENT_PCL 0x144
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#define DMA3_CURRENT_PCL 0x164
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#define DMA4_CURRENT_PCL 0x184
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#define DMA_CURRENT_PCL(chan) (DMA_BREG(DMA0_CURRENT_PCL, chan))
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#define DMA0_CHAN_STAT 0x10c
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#define DMA1_CHAN_STAT 0x12c
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#define DMA2_CHAN_STAT 0x14c
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#define DMA3_CHAN_STAT 0x16c
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#define DMA4_CHAN_STAT 0x18c
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#define DMA_CHAN_STAT(chan) (DMA_BREG(DMA0_CHAN_STAT, chan))
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/* CHAN_STATUS registers share bits */
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#define DMA_CHAN_STAT_SELFID (1<<31)
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#define DMA_CHAN_STAT_ISOPKT (1<<30)
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#define DMA_CHAN_STAT_PCIERR (1<<29)
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#define DMA_CHAN_STAT_PKTERR (1<<28)
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#define DMA_CHAN_STAT_PKTCMPL (1<<27)
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#define DMA_CHAN_STAT_SPECIALACK (1<<14)
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#define DMA0_CHAN_CTRL 0x110
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#define DMA1_CHAN_CTRL 0x130
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#define DMA2_CHAN_CTRL 0x150
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#define DMA3_CHAN_CTRL 0x170
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#define DMA4_CHAN_CTRL 0x190
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#define DMA_CHAN_CTRL(chan) (DMA_BREG(DMA0_CHAN_CTRL, chan))
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/* CHAN_CTRL registers share bits */
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#define DMA_CHAN_CTRL_ENABLE (1<<31)
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#define DMA_CHAN_CTRL_BUSY (1<<30)
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#define DMA_CHAN_CTRL_LINK (1<<29)
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#define DMA0_READY 0x114
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#define DMA1_READY 0x134
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#define DMA2_READY 0x154
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#define DMA3_READY 0x174
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#define DMA4_READY 0x194
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#define DMA_READY(chan) (DMA_BREG(DMA0_READY, chan))
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#define DMA_GLOBAL_REGISTER 0x908
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#define FIFO_SIZES 0xa00
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#define FIFO_CONTROL 0xa10
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#define FIFO_CONTROL_GRF_FLUSH (1<<4)
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#define FIFO_CONTROL_ITF_FLUSH (1<<3)
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#define FIFO_CONTROL_ATF_FLUSH (1<<2)
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#define FIFO_XMIT_THRESHOLD 0xa14
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#define DMA0_WORD0_CMP_VALUE 0xb00
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#define DMA1_WORD0_CMP_VALUE 0xb10
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#define DMA2_WORD0_CMP_VALUE 0xb20
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#define DMA3_WORD0_CMP_VALUE 0xb30
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#define DMA4_WORD0_CMP_VALUE 0xb40
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#define DMA_WORD0_CMP_VALUE(chan) (DMA_SREG(DMA0_WORD0_CMP_VALUE, chan))
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#define DMA0_WORD0_CMP_ENABLE 0xb04
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#define DMA1_WORD0_CMP_ENABLE 0xb14
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#define DMA2_WORD0_CMP_ENABLE 0xb24
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#define DMA3_WORD0_CMP_ENABLE 0xb34
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#define DMA4_WORD0_CMP_ENABLE 0xb44
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#define DMA_WORD0_CMP_ENABLE(chan) (DMA_SREG(DMA0_WORD0_CMP_ENABLE,chan))
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#define DMA0_WORD1_CMP_VALUE 0xb08
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#define DMA1_WORD1_CMP_VALUE 0xb18
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#define DMA2_WORD1_CMP_VALUE 0xb28
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#define DMA3_WORD1_CMP_VALUE 0xb38
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#define DMA4_WORD1_CMP_VALUE 0xb48
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#define DMA_WORD1_CMP_VALUE(chan) (DMA_SREG(DMA0_WORD1_CMP_VALUE, chan))
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#define DMA0_WORD1_CMP_ENABLE 0xb0c
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#define DMA1_WORD1_CMP_ENABLE 0xb1c
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#define DMA2_WORD1_CMP_ENABLE 0xb2c
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#define DMA3_WORD1_CMP_ENABLE 0xb3c
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#define DMA4_WORD1_CMP_ENABLE 0xb4c
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#define DMA_WORD1_CMP_ENABLE(chan) (DMA_SREG(DMA0_WORD1_CMP_ENABLE,chan))
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/* word 1 compare enable flags */
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#define DMA_WORD1_CMP_MATCH_OTHERBUS (1<<15)
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#define DMA_WORD1_CMP_MATCH_BROADCAST (1<<14)
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#define DMA_WORD1_CMP_MATCH_BUS_BCAST (1<<13)
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#define DMA_WORD1_CMP_MATCH_LOCAL_NODE (1<<12)
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#define DMA_WORD1_CMP_MATCH_EXACT (1<<11)
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#define DMA_WORD1_CMP_ENABLE_SELF_ID (1<<10)
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#define DMA_WORD1_CMP_ENABLE_MASTER (1<<8)
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#define LINK_ID 0xf00
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#define LINK_ID_BUS(id) (id<<22)
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#define LINK_ID_NODE(id) (id<<16)
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#define LINK_CONTROL 0xf04
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#define LINK_CONTROL_BUSY (1<<29)
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#define LINK_CONTROL_TX_ISO_EN (1<<26)
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#define LINK_CONTROL_RX_ISO_EN (1<<25)
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#define LINK_CONTROL_TX_ASYNC_EN (1<<24)
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#define LINK_CONTROL_RX_ASYNC_EN (1<<23)
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#define LINK_CONTROL_RESET_TX (1<<21)
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#define LINK_CONTROL_RESET_RX (1<<20)
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#define LINK_CONTROL_CYCMASTER (1<<11)
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#define LINK_CONTROL_CYCSOURCE (1<<10)
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#define LINK_CONTROL_CYCTIMEREN (1<<9)
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#define LINK_CONTROL_RCV_CMP_VALID (1<<7)
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#define LINK_CONTROL_SNOOP_ENABLE (1<<6)
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#define CYCLE_TIMER 0xf08
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#define LINK_PHY 0xf0c
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#define LINK_PHY_READ (1<<31)
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#define LINK_PHY_WRITE (1<<30)
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#define LINK_PHY_ADDR(addr) (addr<<24)
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#define LINK_PHY_WDATA(data) (data<<16)
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#define LINK_PHY_RADDR(addr) (addr<<8)
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#define LINK_INT_STATUS 0xf14
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#define LINK_INT_ENABLE 0xf18
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/* status and enable have identical bit numbers */
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#define LINK_INT_LINK_INT (1<<31)
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#define LINK_INT_PHY_TIMEOUT (1<<30)
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#define LINK_INT_PHY_REG_RCVD (1<<29)
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#define LINK_INT_PHY_BUSRESET (1<<28)
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#define LINK_INT_TX_RDY (1<<26)
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#define LINK_INT_RX_DATA_RDY (1<<25)
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#define LINK_INT_ISO_STUCK (1<<20)
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#define LINK_INT_ASYNC_STUCK (1<<19)
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#define LINK_INT_SENT_REJECT (1<<17)
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#define LINK_INT_HDR_ERR (1<<16)
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#define LINK_INT_TX_INVALID_TC (1<<15)
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#define LINK_INT_CYC_SECOND (1<<11)
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#define LINK_INT_CYC_START (1<<10)
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#define LINK_INT_CYC_DONE (1<<9)
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#define LINK_INT_CYC_PENDING (1<<8)
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#define LINK_INT_CYC_LOST (1<<7)
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#define LINK_INT_CYC_ARB_FAILED (1<<6)
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#define LINK_INT_GRF_OVERFLOW (1<<5)
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#define LINK_INT_ITF_UNDERFLOW (1<<4)
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#define LINK_INT_ATF_UNDERFLOW (1<<3)
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#define LINK_INT_ISOARB_FAILED (1<<0)
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/* PHY specifics */
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#define PHY_VENDORID_TI 0x800028
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#define PHY_PRODUCTID_TSB41LV03 0x000000
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/* this is the physical layout of a PCL, its size is 128 bytes */
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struct ti_pcl {
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u32 next;
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u32 async_error_next;
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u32 user_data;
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u32 pcl_status;
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u32 remaining_transfer_count;
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u32 next_data_buffer;
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struct {
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u32 control;
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u32 pointer;
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} buffer[13] __attribute__ ((packed));
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} __attribute__ ((packed));
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#include <linux/stddef.h>
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#define pcloffs(MEMBER) (offsetof(struct ti_pcl, MEMBER))
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static inline void put_pcl(const struct ti_lynx *lynx, pcl_t pclid,
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const struct ti_pcl *pcl)
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{
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memcpy_le32((u32 *)(lynx->pcl_mem + pclid * sizeof(struct ti_pcl)),
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(u32 *)pcl, sizeof(struct ti_pcl));
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}
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static inline void get_pcl(const struct ti_lynx *lynx, pcl_t pclid,
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struct ti_pcl *pcl)
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{
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memcpy_le32((u32 *)pcl,
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(u32 *)(lynx->pcl_mem + pclid * sizeof(struct ti_pcl)),
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sizeof(struct ti_pcl));
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}
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static inline u32 pcl_bus(const struct ti_lynx *lynx, pcl_t pclid)
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{
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return lynx->pcl_mem_dma + pclid * sizeof(struct ti_pcl);
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}
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#if defined (__BIG_ENDIAN)
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typedef struct ti_pcl pcltmp_t;
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static inline struct ti_pcl *edit_pcl(const struct ti_lynx *lynx, pcl_t pclid,
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pcltmp_t *tmp)
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{
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get_pcl(lynx, pclid, tmp);
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return tmp;
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}
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static inline void commit_pcl(const struct ti_lynx *lynx, pcl_t pclid,
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pcltmp_t *tmp)
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{
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put_pcl(lynx, pclid, tmp);
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}
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#else
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typedef int pcltmp_t; /* just a dummy */
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static inline struct ti_pcl *edit_pcl(const struct ti_lynx *lynx, pcl_t pclid,
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pcltmp_t *tmp)
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{
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return lynx->pcl_mem + pclid * sizeof(struct ti_pcl);
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}
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static inline void commit_pcl(const struct ti_lynx *lynx, pcl_t pclid,
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pcltmp_t *tmp)
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{
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}
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#endif
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static inline void run_sub_pcl(const struct ti_lynx *lynx, pcl_t pclid, int idx,
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int dmachan)
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{
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reg_write(lynx, DMA0_CURRENT_PCL + dmachan * 0x20,
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pcl_bus(lynx, pclid) + idx * 4);
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reg_write(lynx, DMA0_CHAN_CTRL + dmachan * 0x20,
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DMA_CHAN_CTRL_ENABLE | DMA_CHAN_CTRL_LINK);
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}
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static inline void run_pcl(const struct ti_lynx *lynx, pcl_t pclid, int dmachan)
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{
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run_sub_pcl(lynx, pclid, 0, dmachan);
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}
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#define PCL_NEXT_INVALID (1<<0)
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/* transfer commands */
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#define PCL_CMD_RCV (0x1<<24)
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#define PCL_CMD_RCV_AND_UPDATE (0xa<<24)
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#define PCL_CMD_XMT (0x2<<24)
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#define PCL_CMD_UNFXMT (0xc<<24)
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#define PCL_CMD_PCI_TO_LBUS (0x8<<24)
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#define PCL_CMD_LBUS_TO_PCI (0x9<<24)
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/* aux commands */
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#define PCL_CMD_NOP (0x0<<24)
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#define PCL_CMD_LOAD (0x3<<24)
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#define PCL_CMD_STOREQ (0x4<<24)
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#define PCL_CMD_STORED (0xb<<24)
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#define PCL_CMD_STORE0 (0x5<<24)
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#define PCL_CMD_STORE1 (0x6<<24)
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#define PCL_CMD_COMPARE (0xe<<24)
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#define PCL_CMD_SWAP_COMPARE (0xf<<24)
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#define PCL_CMD_ADD (0xd<<24)
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#define PCL_CMD_BRANCH (0x7<<24)
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/* BRANCH condition codes */
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#define PCL_COND_DMARDY_SET (0x1<<20)
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#define PCL_COND_DMARDY_CLEAR (0x2<<20)
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#define PCL_GEN_INTR (1<<19)
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#define PCL_LAST_BUFF (1<<18)
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#define PCL_LAST_CMD (PCL_LAST_BUFF)
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#define PCL_WAITSTAT (1<<17)
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#define PCL_BIGENDIAN (1<<16)
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#define PCL_ISOMODE (1<<12)
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#endif
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