Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 516 insertions, 0 deletions

diff --git a/drivers/ieee1394/pcilynx.h b/drivers/ieee1394/pcilynx.h
new file mode 100644
index 0000000..644ec55
--- /dev/null
+++ b/drivers/ieee1394/pcilynx.h
@@ -0,0 +1,516 @@
+#ifndef __PCILYNX_H__
+#define __PCILYNX_H__
+
+#include <linux/config.h>
+
+#define PCILYNX_DRIVER_NAME      "pcilynx"
+#define PCILYNX_MAJOR            177
+
+#define PCILYNX_MINOR_AUX_START  0
+#define PCILYNX_MINOR_ROM_START  16
+#define PCILYNX_MINOR_RAM_START  32
+
+#define PCILYNX_MAX_REGISTER     0xfff
+#define PCILYNX_MAX_MEMORY       0xffff
+
+#define PCI_DEVICE_ID_TI_PCILYNX 0x8000
+#define MAX_PCILYNX_CARDS        4
+#define LOCALRAM_SIZE            4096
+
+#define NUM_ISORCV_PCL           4
+#define MAX_ISORCV_SIZE          2048
+#define ISORCV_PER_PAGE          (PAGE_SIZE / MAX_ISORCV_SIZE)
+#define ISORCV_PAGES             (NUM_ISORCV_PCL / ISORCV_PER_PAGE)
+
+#define CHANNEL_LOCALBUS         0
+#define CHANNEL_ASYNC_RCV        1
+#define CHANNEL_ISO_RCV          2
+#define CHANNEL_ASYNC_SEND       3
+#define CHANNEL_ISO_SEND         4
+
+#define PCILYNX_CONFIG_ROM_LENGTH   1024
+
+typedef int pcl_t;
+
+struct ti_lynx {
+        int id; /* sequential card number */
+
+        spinlock_t lock;
+
+        struct pci_dev *dev;
+
+        struct {
+                unsigned reg_1394a:1;
+                u32 vendor;
+                u32 product;
+        } phyic;
+
+        enum { clear, have_intr, have_aux_buf, have_pcl_mem,
+               have_1394_buffers, have_iomappings, is_host } state;
+
+        /* remapped memory spaces */
+        void __iomem *registers;
+        void __iomem *local_rom;
+        void __iomem *local_ram;
+        void __iomem *aux_port;
+	quadlet_t bus_info_block[5];
+
+#ifdef CONFIG_IEEE1394_PCILYNX_PORTS
+        atomic_t aux_intr_seen;
+        wait_queue_head_t aux_intr_wait;
+
+        void *mem_dma_buffer;
+        dma_addr_t mem_dma_buffer_dma;
+        struct semaphore mem_dma_mutex;
+        wait_queue_head_t mem_dma_intr_wait;
+#endif
+
+        /*
+         * use local RAM of LOCALRAM_SIZE bytes for PCLs, which allows for
+         * LOCALRAM_SIZE * 8 PCLs (each sized 128 bytes);
+         * the following is an allocation bitmap
+         */
+        u8 pcl_bmap[LOCALRAM_SIZE / 1024];
+
+#ifndef CONFIG_IEEE1394_PCILYNX_LOCALRAM
+	/* point to PCLs memory area if needed */
+	void *pcl_mem;
+        dma_addr_t pcl_mem_dma;
+#endif
+
+        /* PCLs for local mem / aux transfers */
+        pcl_t dmem_pcl;
+
+        /* IEEE-1394 part follows */
+        struct hpsb_host *host;
+
+        int phyid, isroot;
+        int selfid_size;
+        int phy_reg0;
+
+        spinlock_t phy_reg_lock;
+
+        pcl_t rcv_pcl_start, rcv_pcl;
+        void *rcv_page;
+        dma_addr_t rcv_page_dma;
+        int rcv_active;
+
+        struct lynx_send_data {
+                pcl_t pcl_start, pcl;
+                struct list_head queue;
+                struct list_head pcl_queue; /* this queue contains at most one packet */
+                spinlock_t queue_lock;
+                dma_addr_t header_dma, data_dma;
+                int channel;
+        } async, iso_send;
+
+        struct {
+                pcl_t pcl[NUM_ISORCV_PCL];
+                u32 stat[NUM_ISORCV_PCL];
+                void *page[ISORCV_PAGES];
+                dma_addr_t page_dma[ISORCV_PAGES];
+                pcl_t pcl_start;
+                int chan_count;
+                int next, last, used, running;
+                struct tasklet_struct tq;
+                spinlock_t lock;
+        } iso_rcv;
+
+	u32 i2c_driven_state; /* the state we currently drive the Serial EEPROM Control register */
+};
+
+/* the per-file data structure for mem space access */
+struct memdata {
+        struct ti_lynx *lynx;
+        int cid;
+        atomic_t aux_intr_last_seen;
+	/* enum values are the same as LBUS_ADDR_SEL_* values below */
+        enum { rom = 0x10000, aux = 0x20000, ram = 0 } type;
+};
+
+
+
+/*
+ * Register read and write helper functions.
+ */
+static inline void reg_write(const struct ti_lynx *lynx, int offset, u32 data)
+{
+        writel(data, lynx->registers + offset);
+}
+
+static inline u32 reg_read(const struct ti_lynx *lynx, int offset)
+{
+        return readl(lynx->registers + offset);
+}
+
+static inline void reg_set_bits(const struct ti_lynx *lynx, int offset,
+                                u32 mask)
+{
+        reg_write(lynx, offset, (reg_read(lynx, offset) | mask));
+}
+
+static inline void reg_clear_bits(const struct ti_lynx *lynx, int offset,
+                                  u32 mask)
+{
+        reg_write(lynx, offset, (reg_read(lynx, offset) & ~mask));
+}
+
+
+
+/* chip register definitions follow */
+
+#define PCI_LATENCY_CACHELINE             0x0c
+
+#define MISC_CONTROL                      0x40
+#define MISC_CONTROL_SWRESET              (1<<0)
+
+#define SERIAL_EEPROM_CONTROL             0x44
+
+#define PCI_INT_STATUS                    0x48
+#define PCI_INT_ENABLE                    0x4c
+/* status and enable have identical bit numbers */
+#define PCI_INT_INT_PEND                  (1<<31)
+#define PCI_INT_FORCED_INT                (1<<30)
+#define PCI_INT_SLV_ADR_PERR              (1<<28)
+#define PCI_INT_SLV_DAT_PERR              (1<<27)
+#define PCI_INT_MST_DAT_PERR              (1<<26)
+#define PCI_INT_MST_DEV_TIMEOUT           (1<<25)
+#define PCI_INT_INTERNAL_SLV_TIMEOUT      (1<<23)
+#define PCI_INT_AUX_TIMEOUT               (1<<18)
+#define PCI_INT_AUX_INT                   (1<<17)
+#define PCI_INT_1394                      (1<<16)
+#define PCI_INT_DMA4_PCL                  (1<<9)
+#define PCI_INT_DMA4_HLT                  (1<<8)
+#define PCI_INT_DMA3_PCL                  (1<<7)
+#define PCI_INT_DMA3_HLT                  (1<<6)
+#define PCI_INT_DMA2_PCL                  (1<<5)
+#define PCI_INT_DMA2_HLT                  (1<<4)
+#define PCI_INT_DMA1_PCL                  (1<<3)
+#define PCI_INT_DMA1_HLT                  (1<<2)
+#define PCI_INT_DMA0_PCL                  (1<<1)
+#define PCI_INT_DMA0_HLT                  (1<<0)
+/* all DMA interrupts combined: */
+#define PCI_INT_DMA_ALL                   0x3ff
+
+#define PCI_INT_DMA_HLT(chan)             (1 << (chan * 2))
+#define PCI_INT_DMA_PCL(chan)             (1 << (chan * 2 + 1))
+
+#define LBUS_ADDR                         0xb4
+#define LBUS_ADDR_SEL_RAM                 (0x0<<16)
+#define LBUS_ADDR_SEL_ROM                 (0x1<<16)
+#define LBUS_ADDR_SEL_AUX                 (0x2<<16)
+#define LBUS_ADDR_SEL_ZV                  (0x3<<16)
+
+#define GPIO_CTRL_A                       0xb8
+#define GPIO_CTRL_B                       0xbc
+#define GPIO_DATA_BASE                    0xc0
+
+#define DMA_BREG(base, chan)              (base + chan * 0x20)
+#define DMA_SREG(base, chan)              (base + chan * 0x10)
+
+#define DMA0_PREV_PCL                     0x100
+#define DMA1_PREV_PCL                     0x120
+#define DMA2_PREV_PCL                     0x140
+#define DMA3_PREV_PCL                     0x160
+#define DMA4_PREV_PCL                     0x180
+#define DMA_PREV_PCL(chan)                (DMA_BREG(DMA0_PREV_PCL, chan))
+
+#define DMA0_CURRENT_PCL                  0x104
+#define DMA1_CURRENT_PCL                  0x124
+#define DMA2_CURRENT_PCL                  0x144
+#define DMA3_CURRENT_PCL                  0x164
+#define DMA4_CURRENT_PCL                  0x184
+#define DMA_CURRENT_PCL(chan)             (DMA_BREG(DMA0_CURRENT_PCL, chan))
+
+#define DMA0_CHAN_STAT                    0x10c
+#define DMA1_CHAN_STAT                    0x12c
+#define DMA2_CHAN_STAT                    0x14c
+#define DMA3_CHAN_STAT                    0x16c
+#define DMA4_CHAN_STAT                    0x18c
+#define DMA_CHAN_STAT(chan)               (DMA_BREG(DMA0_CHAN_STAT, chan))
+/* CHAN_STATUS registers share bits */
+#define DMA_CHAN_STAT_SELFID              (1<<31)
+#define DMA_CHAN_STAT_ISOPKT              (1<<30)
+#define DMA_CHAN_STAT_PCIERR              (1<<29)
+#define DMA_CHAN_STAT_PKTERR              (1<<28)
+#define DMA_CHAN_STAT_PKTCMPL             (1<<27)
+#define DMA_CHAN_STAT_SPECIALACK          (1<<14)
+
+
+#define DMA0_CHAN_CTRL                    0x110
+#define DMA1_CHAN_CTRL                    0x130
+#define DMA2_CHAN_CTRL                    0x150
+#define DMA3_CHAN_CTRL                    0x170
+#define DMA4_CHAN_CTRL                    0x190
+#define DMA_CHAN_CTRL(chan)               (DMA_BREG(DMA0_CHAN_CTRL, chan))
+/* CHAN_CTRL registers share bits */
+#define DMA_CHAN_CTRL_ENABLE              (1<<31)
+#define DMA_CHAN_CTRL_BUSY                (1<<30)
+#define DMA_CHAN_CTRL_LINK                (1<<29)
+
+#define DMA0_READY                        0x114
+#define DMA1_READY                        0x134
+#define DMA2_READY                        0x154
+#define DMA3_READY                        0x174
+#define DMA4_READY                        0x194
+#define DMA_READY(chan)                   (DMA_BREG(DMA0_READY, chan))
+
+#define DMA_GLOBAL_REGISTER               0x908
+
+#define FIFO_SIZES                        0xa00
+
+#define FIFO_CONTROL                      0xa10
+#define FIFO_CONTROL_GRF_FLUSH            (1<<4)
+#define FIFO_CONTROL_ITF_FLUSH            (1<<3)
+#define FIFO_CONTROL_ATF_FLUSH            (1<<2)
+
+#define FIFO_XMIT_THRESHOLD               0xa14
+
+#define DMA0_WORD0_CMP_VALUE              0xb00
+#define DMA1_WORD0_CMP_VALUE              0xb10
+#define DMA2_WORD0_CMP_VALUE              0xb20
+#define DMA3_WORD0_CMP_VALUE              0xb30
+#define DMA4_WORD0_CMP_VALUE              0xb40
+#define DMA_WORD0_CMP_VALUE(chan)         (DMA_SREG(DMA0_WORD0_CMP_VALUE, chan))
+
+#define DMA0_WORD0_CMP_ENABLE             0xb04
+#define DMA1_WORD0_CMP_ENABLE             0xb14
+#define DMA2_WORD0_CMP_ENABLE             0xb24
+#define DMA3_WORD0_CMP_ENABLE             0xb34
+#define DMA4_WORD0_CMP_ENABLE             0xb44
+#define DMA_WORD0_CMP_ENABLE(chan)        (DMA_SREG(DMA0_WORD0_CMP_ENABLE,chan))
+
+#define DMA0_WORD1_CMP_VALUE              0xb08
+#define DMA1_WORD1_CMP_VALUE              0xb18
+#define DMA2_WORD1_CMP_VALUE              0xb28
+#define DMA3_WORD1_CMP_VALUE              0xb38
+#define DMA4_WORD1_CMP_VALUE              0xb48
+#define DMA_WORD1_CMP_VALUE(chan)         (DMA_SREG(DMA0_WORD1_CMP_VALUE, chan))
+
+#define DMA0_WORD1_CMP_ENABLE             0xb0c
+#define DMA1_WORD1_CMP_ENABLE             0xb1c
+#define DMA2_WORD1_CMP_ENABLE             0xb2c
+#define DMA3_WORD1_CMP_ENABLE             0xb3c
+#define DMA4_WORD1_CMP_ENABLE             0xb4c
+#define DMA_WORD1_CMP_ENABLE(chan)        (DMA_SREG(DMA0_WORD1_CMP_ENABLE,chan))
+/* word 1 compare enable flags */
+#define DMA_WORD1_CMP_MATCH_OTHERBUS      (1<<15)
+#define DMA_WORD1_CMP_MATCH_BROADCAST     (1<<14)
+#define DMA_WORD1_CMP_MATCH_BUS_BCAST     (1<<13)
+#define DMA_WORD1_CMP_MATCH_LOCAL_NODE    (1<<12)
+#define DMA_WORD1_CMP_MATCH_EXACT         (1<<11)
+#define DMA_WORD1_CMP_ENABLE_SELF_ID      (1<<10)
+#define DMA_WORD1_CMP_ENABLE_MASTER       (1<<8)
+
+#define LINK_ID                           0xf00
+#define LINK_ID_BUS(id)                   (id<<22)
+#define LINK_ID_NODE(id)                  (id<<16)
+
+#define LINK_CONTROL                      0xf04
+#define LINK_CONTROL_BUSY                 (1<<29)
+#define LINK_CONTROL_TX_ISO_EN            (1<<26)
+#define LINK_CONTROL_RX_ISO_EN            (1<<25)
+#define LINK_CONTROL_TX_ASYNC_EN          (1<<24)
+#define LINK_CONTROL_RX_ASYNC_EN          (1<<23)
+#define LINK_CONTROL_RESET_TX             (1<<21)
+#define LINK_CONTROL_RESET_RX             (1<<20)
+#define LINK_CONTROL_CYCMASTER            (1<<11)
+#define LINK_CONTROL_CYCSOURCE            (1<<10)
+#define LINK_CONTROL_CYCTIMEREN           (1<<9)
+#define LINK_CONTROL_RCV_CMP_VALID        (1<<7)
+#define LINK_CONTROL_SNOOP_ENABLE         (1<<6)
+
+#define CYCLE_TIMER                       0xf08
+
+#define LINK_PHY                          0xf0c
+#define LINK_PHY_READ                     (1<<31)
+#define LINK_PHY_WRITE                    (1<<30)
+#define LINK_PHY_ADDR(addr)               (addr<<24)
+#define LINK_PHY_WDATA(data)              (data<<16)
+#define LINK_PHY_RADDR(addr)              (addr<<8)
+
+
+#define LINK_INT_STATUS                   0xf14
+#define LINK_INT_ENABLE                   0xf18
+/* status and enable have identical bit numbers */
+#define LINK_INT_LINK_INT                 (1<<31)
+#define LINK_INT_PHY_TIMEOUT              (1<<30)
+#define LINK_INT_PHY_REG_RCVD             (1<<29)
+#define LINK_INT_PHY_BUSRESET             (1<<28)
+#define LINK_INT_TX_RDY                   (1<<26)
+#define LINK_INT_RX_DATA_RDY              (1<<25)
+#define LINK_INT_ISO_STUCK                (1<<20)
+#define LINK_INT_ASYNC_STUCK              (1<<19)
+#define LINK_INT_SENT_REJECT              (1<<17)
+#define LINK_INT_HDR_ERR                  (1<<16)
+#define LINK_INT_TX_INVALID_TC            (1<<15)
+#define LINK_INT_CYC_SECOND               (1<<11)
+#define LINK_INT_CYC_START                (1<<10)
+#define LINK_INT_CYC_DONE                 (1<<9)
+#define LINK_INT_CYC_PENDING              (1<<8)
+#define LINK_INT_CYC_LOST                 (1<<7)
+#define LINK_INT_CYC_ARB_FAILED           (1<<6)
+#define LINK_INT_GRF_OVERFLOW             (1<<5)
+#define LINK_INT_ITF_UNDERFLOW            (1<<4)
+#define LINK_INT_ATF_UNDERFLOW            (1<<3)
+#define LINK_INT_ISOARB_FAILED            (1<<0)
+
+/* PHY specifics */
+#define PHY_VENDORID_TI                 0x800028
+#define PHY_PRODUCTID_TSB41LV03         0x000000
+
+
+/* this is the physical layout of a PCL, its size is 128 bytes */
+struct ti_pcl {
+        u32 next;
+        u32 async_error_next;
+        u32 user_data;
+        u32 pcl_status;
+        u32 remaining_transfer_count;
+        u32 next_data_buffer;
+        struct {
+                u32 control;
+                u32 pointer;
+        } buffer[13] __attribute__ ((packed));
+} __attribute__ ((packed));
+
+#include <linux/stddef.h>
+#define pcloffs(MEMBER) (offsetof(struct ti_pcl, MEMBER))
+
+
+#ifdef CONFIG_IEEE1394_PCILYNX_LOCALRAM
+
+static inline void put_pcl(const struct ti_lynx *lynx, pcl_t pclid,
+                           const struct ti_pcl *pcl)
+{
+        int i;
+        u32 *in = (u32 *)pcl;
+        u32 *out = (u32 *)(lynx->local_ram + pclid * sizeof(struct ti_pcl));
+
+        for (i = 0; i < 32; i++, out++, in++) {
+                writel(*in, out);
+        }
+}
+
+static inline void get_pcl(const struct ti_lynx *lynx, pcl_t pclid,
+                           struct ti_pcl *pcl)
+{
+        int i;
+        u32 *out = (u32 *)pcl;
+        u32 *in = (u32 *)(lynx->local_ram + pclid * sizeof(struct ti_pcl));
+
+        for (i = 0; i < 32; i++, out++, in++) {
+                *out = readl(in);
+        }
+}
+
+static inline u32 pcl_bus(const struct ti_lynx *lynx, pcl_t pclid)
+{
+        return pci_resource_start(lynx->dev, 1) + pclid * sizeof(struct ti_pcl);
+}
+
+#else /* CONFIG_IEEE1394_PCILYNX_LOCALRAM */
+
+static inline void put_pcl(const struct ti_lynx *lynx, pcl_t pclid,
+                           const struct ti_pcl *pcl)
+{
+        memcpy_le32((u32 *)(lynx->pcl_mem + pclid * sizeof(struct ti_pcl)),
+                    (u32 *)pcl, sizeof(struct ti_pcl));
+}
+
+static inline void get_pcl(const struct ti_lynx *lynx, pcl_t pclid,
+                           struct ti_pcl *pcl)
+{
+        memcpy_le32((u32 *)pcl,
+                    (u32 *)(lynx->pcl_mem + pclid * sizeof(struct ti_pcl)),
+                    sizeof(struct ti_pcl));
+}
+
+static inline u32 pcl_bus(const struct ti_lynx *lynx, pcl_t pclid)
+{
+        return lynx->pcl_mem_dma + pclid * sizeof(struct ti_pcl);
+}
+
+#endif /* CONFIG_IEEE1394_PCILYNX_LOCALRAM */
+
+
+#if defined (CONFIG_IEEE1394_PCILYNX_LOCALRAM) || defined (__BIG_ENDIAN)
+typedef struct ti_pcl pcltmp_t;
+
+static inline struct ti_pcl *edit_pcl(const struct ti_lynx *lynx, pcl_t pclid,
+                                      pcltmp_t *tmp)
+{
+        get_pcl(lynx, pclid, tmp);
+        return tmp;
+}
+
+static inline void commit_pcl(const struct ti_lynx *lynx, pcl_t pclid,
+                              pcltmp_t *tmp)
+{
+        put_pcl(lynx, pclid, tmp);
+}
+
+#else
+typedef int pcltmp_t; /* just a dummy */
+
+static inline struct ti_pcl *edit_pcl(const struct ti_lynx *lynx, pcl_t pclid,
+                                      pcltmp_t *tmp)
+{
+        return lynx->pcl_mem + pclid * sizeof(struct ti_pcl);
+}
+
+static inline void commit_pcl(const struct ti_lynx *lynx, pcl_t pclid,
+                              pcltmp_t *tmp)
+{
+}
+#endif
+
+
+static inline void run_sub_pcl(const struct ti_lynx *lynx, pcl_t pclid, int idx,
+                               int dmachan)
+{
+        reg_write(lynx, DMA0_CURRENT_PCL + dmachan * 0x20,
+                  pcl_bus(lynx, pclid) + idx * 4);
+        reg_write(lynx, DMA0_CHAN_CTRL + dmachan * 0x20,
+                  DMA_CHAN_CTRL_ENABLE | DMA_CHAN_CTRL_LINK);
+}
+
+static inline void run_pcl(const struct ti_lynx *lynx, pcl_t pclid, int dmachan)
+{
+        run_sub_pcl(lynx, pclid, 0, dmachan);
+}
+
+#define PCL_NEXT_INVALID (1<<0)
+
+/* transfer commands */
+#define PCL_CMD_RCV            (0x1<<24)
+#define PCL_CMD_RCV_AND_UPDATE (0xa<<24)
+#define PCL_CMD_XMT            (0x2<<24)
+#define PCL_CMD_UNFXMT         (0xc<<24)
+#define PCL_CMD_PCI_TO_LBUS    (0x8<<24)
+#define PCL_CMD_LBUS_TO_PCI    (0x9<<24)
+
+/* aux commands */
+#define PCL_CMD_NOP            (0x0<<24)
+#define PCL_CMD_LOAD           (0x3<<24)
+#define PCL_CMD_STOREQ         (0x4<<24)
+#define PCL_CMD_STORED         (0xb<<24)
+#define PCL_CMD_STORE0         (0x5<<24)
+#define PCL_CMD_STORE1         (0x6<<24)
+#define PCL_CMD_COMPARE        (0xe<<24)
+#define PCL_CMD_SWAP_COMPARE   (0xf<<24)
+#define PCL_CMD_ADD            (0xd<<24)
+#define PCL_CMD_BRANCH         (0x7<<24)
+
+/* BRANCH condition codes */
+#define PCL_COND_DMARDY_SET    (0x1<<20)
+#define PCL_COND_DMARDY_CLEAR  (0x2<<20)
+
+#define PCL_GEN_INTR           (1<<19)
+#define PCL_LAST_BUFF          (1<<18)
+#define PCL_LAST_CMD           (PCL_LAST_BUFF)
+#define PCL_WAITSTAT           (1<<17)
+#define PCL_BIGENDIAN          (1<<16)
+#define PCL_ISOMODE            (1<<12)
+
+#endif