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7347f4b95f
There is no need to keep the dentry pointer around for the created debugfs file, as it is only needed when removing it from the system. When it is to be removed, ask debugfs itself for the pointer, to save on storage and make things a bit simpler. Cc: linux-usb@vger.kernel.org Link: https://lore.kernel.org/r/20210216144645.3813043-2-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
914 lines
28 KiB
C
914 lines
28 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* ISP1362 HCD (Host Controller Driver) for USB.
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*
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* COPYRIGHT (C) by L. Wassmann <LW@KARO-electronics.de>
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*/
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/* ------------------------------------------------------------------------- */
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#define MAX_ROOT_PORTS 2
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#define USE_32BIT 0
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/* These options are mutually exclusive */
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#define USE_PLATFORM_DELAY 0
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#define USE_NDELAY 0
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#define DUMMY_DELAY_ACCESS do {} while (0)
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/* ------------------------------------------------------------------------- */
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#define USB_RESET_WIDTH 50
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#define MAX_XFER_SIZE 1023
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/* Buffer sizes */
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#define ISP1362_BUF_SIZE 4096
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#define ISP1362_ISTL_BUFSIZE 512
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#define ISP1362_INTL_BLKSIZE 64
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#define ISP1362_INTL_BUFFERS 16
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#define ISP1362_ATL_BLKSIZE 64
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#define ISP1362_REG_WRITE_OFFSET 0x80
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#define REG_WIDTH_16 0x000
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#define REG_WIDTH_32 0x100
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#define REG_WIDTH_MASK 0x100
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#define REG_NO_MASK 0x0ff
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#ifdef ISP1362_DEBUG
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typedef const unsigned int isp1362_reg_t;
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#define REG_ACCESS_R 0x200
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#define REG_ACCESS_W 0x400
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#define REG_ACCESS_RW 0x600
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#define REG_ACCESS_MASK 0x600
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#define ISP1362_REG_NO(r) ((r) & REG_NO_MASK)
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#define ISP1362_REG(name, addr, width, rw) \
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static isp1362_reg_t ISP1362_REG_##name = ((addr) | (width) | (rw))
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#define REG_ACCESS_TEST(r) BUG_ON(((r) & ISP1362_REG_WRITE_OFFSET) && !((r) & REG_ACCESS_W))
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#define REG_WIDTH_TEST(r, w) BUG_ON(((r) & REG_WIDTH_MASK) != (w))
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#else
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typedef const unsigned char isp1362_reg_t;
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#define ISP1362_REG_NO(r) (r)
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#define ISP1362_REG(name, addr, width, rw) \
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static isp1362_reg_t __maybe_unused ISP1362_REG_##name = addr
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#define REG_ACCESS_TEST(r) do {} while (0)
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#define REG_WIDTH_TEST(r, w) do {} while (0)
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#endif
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/* OHCI compatible registers */
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/*
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* Note: Some of the ISP1362 'OHCI' registers implement only
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* a subset of the bits defined in the OHCI spec.
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*
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* Bitmasks for the individual bits of these registers are defined in "ohci.h"
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*/
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ISP1362_REG(HCREVISION, 0x00, REG_WIDTH_32, REG_ACCESS_R);
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ISP1362_REG(HCCONTROL, 0x01, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCCMDSTAT, 0x02, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCINTSTAT, 0x03, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCINTENB, 0x04, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCINTDIS, 0x05, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCFMINTVL, 0x0d, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCFMREM, 0x0e, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCFMNUM, 0x0f, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCLSTHRESH, 0x11, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCRHDESCA, 0x12, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCRHDESCB, 0x13, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCRHSTATUS, 0x14, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCRHPORT1, 0x15, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCRHPORT2, 0x16, REG_WIDTH_32, REG_ACCESS_RW);
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/* Philips ISP1362 specific registers */
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ISP1362_REG(HCHWCFG, 0x20, REG_WIDTH_16, REG_ACCESS_RW);
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#define HCHWCFG_DISABLE_SUSPEND (1 << 15)
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#define HCHWCFG_GLOBAL_PWRDOWN (1 << 14)
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#define HCHWCFG_PULLDOWN_DS2 (1 << 13)
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#define HCHWCFG_PULLDOWN_DS1 (1 << 12)
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#define HCHWCFG_CLKNOTSTOP (1 << 11)
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#define HCHWCFG_ANALOG_OC (1 << 10)
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#define HCHWCFG_ONEINT (1 << 9)
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#define HCHWCFG_DACK_MODE (1 << 8)
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#define HCHWCFG_ONEDMA (1 << 7)
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#define HCHWCFG_DACK_POL (1 << 6)
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#define HCHWCFG_DREQ_POL (1 << 5)
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#define HCHWCFG_DBWIDTH_MASK (0x03 << 3)
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#define HCHWCFG_DBWIDTH(n) (((n) << 3) & HCHWCFG_DBWIDTH_MASK)
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#define HCHWCFG_INT_POL (1 << 2)
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#define HCHWCFG_INT_TRIGGER (1 << 1)
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#define HCHWCFG_INT_ENABLE (1 << 0)
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ISP1362_REG(HCDMACFG, 0x21, REG_WIDTH_16, REG_ACCESS_RW);
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#define HCDMACFG_CTR_ENABLE (1 << 7)
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#define HCDMACFG_BURST_LEN_MASK (0x03 << 5)
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#define HCDMACFG_BURST_LEN(n) (((n) << 5) & HCDMACFG_BURST_LEN_MASK)
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#define HCDMACFG_BURST_LEN_1 HCDMACFG_BURST_LEN(0)
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#define HCDMACFG_BURST_LEN_4 HCDMACFG_BURST_LEN(1)
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#define HCDMACFG_BURST_LEN_8 HCDMACFG_BURST_LEN(2)
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#define HCDMACFG_DMA_ENABLE (1 << 4)
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#define HCDMACFG_BUF_TYPE_MASK (0x07 << 1)
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#define HCDMACFG_BUF_TYPE(n) (((n) << 1) & HCDMACFG_BUF_TYPE_MASK)
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#define HCDMACFG_BUF_ISTL0 HCDMACFG_BUF_TYPE(0)
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#define HCDMACFG_BUF_ISTL1 HCDMACFG_BUF_TYPE(1)
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#define HCDMACFG_BUF_INTL HCDMACFG_BUF_TYPE(2)
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#define HCDMACFG_BUF_ATL HCDMACFG_BUF_TYPE(3)
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#define HCDMACFG_BUF_DIRECT HCDMACFG_BUF_TYPE(4)
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#define HCDMACFG_DMA_RW_SELECT (1 << 0)
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ISP1362_REG(HCXFERCTR, 0x22, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCuPINT, 0x24, REG_WIDTH_16, REG_ACCESS_RW);
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#define HCuPINT_SOF (1 << 0)
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#define HCuPINT_ISTL0 (1 << 1)
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#define HCuPINT_ISTL1 (1 << 2)
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#define HCuPINT_EOT (1 << 3)
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#define HCuPINT_OPR (1 << 4)
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#define HCuPINT_SUSP (1 << 5)
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#define HCuPINT_CLKRDY (1 << 6)
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#define HCuPINT_INTL (1 << 7)
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#define HCuPINT_ATL (1 << 8)
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#define HCuPINT_OTG (1 << 9)
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ISP1362_REG(HCuPINTENB, 0x25, REG_WIDTH_16, REG_ACCESS_RW);
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/* same bit definitions apply as for HCuPINT */
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ISP1362_REG(HCCHIPID, 0x27, REG_WIDTH_16, REG_ACCESS_R);
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#define HCCHIPID_MASK 0xff00
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#define HCCHIPID_MAGIC 0x3600
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ISP1362_REG(HCSCRATCH, 0x28, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCSWRES, 0x29, REG_WIDTH_16, REG_ACCESS_W);
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#define HCSWRES_MAGIC 0x00f6
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ISP1362_REG(HCBUFSTAT, 0x2c, REG_WIDTH_16, REG_ACCESS_RW);
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#define HCBUFSTAT_ISTL0_FULL (1 << 0)
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#define HCBUFSTAT_ISTL1_FULL (1 << 1)
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#define HCBUFSTAT_INTL_ACTIVE (1 << 2)
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#define HCBUFSTAT_ATL_ACTIVE (1 << 3)
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#define HCBUFSTAT_RESET_HWPP (1 << 4)
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#define HCBUFSTAT_ISTL0_ACTIVE (1 << 5)
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#define HCBUFSTAT_ISTL1_ACTIVE (1 << 6)
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#define HCBUFSTAT_ISTL0_DONE (1 << 8)
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#define HCBUFSTAT_ISTL1_DONE (1 << 9)
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#define HCBUFSTAT_PAIRED_PTDPP (1 << 10)
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ISP1362_REG(HCDIRADDR, 0x32, REG_WIDTH_32, REG_ACCESS_RW);
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#define HCDIRADDR_ADDR_MASK 0x0000ffff
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#define HCDIRADDR_ADDR(n) (((n) << 0) & HCDIRADDR_ADDR_MASK)
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#define HCDIRADDR_COUNT_MASK 0xffff0000
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#define HCDIRADDR_COUNT(n) (((n) << 16) & HCDIRADDR_COUNT_MASK)
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ISP1362_REG(HCDIRDATA, 0x45, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCISTLBUFSZ, 0x30, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCISTL0PORT, 0x40, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCISTL1PORT, 0x42, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCISTLRATE, 0x47, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCINTLBUFSZ, 0x33, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCINTLPORT, 0x43, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCINTLBLKSZ, 0x53, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCINTLDONE, 0x17, REG_WIDTH_32, REG_ACCESS_R);
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ISP1362_REG(HCINTLSKIP, 0x18, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCINTLLAST, 0x19, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCINTLCURR, 0x1a, REG_WIDTH_16, REG_ACCESS_R);
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ISP1362_REG(HCATLBUFSZ, 0x34, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCATLPORT, 0x44, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCATLBLKSZ, 0x54, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCATLDONE, 0x1b, REG_WIDTH_32, REG_ACCESS_R);
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ISP1362_REG(HCATLSKIP, 0x1c, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCATLLAST, 0x1d, REG_WIDTH_32, REG_ACCESS_RW);
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ISP1362_REG(HCATLCURR, 0x1e, REG_WIDTH_16, REG_ACCESS_R);
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ISP1362_REG(HCATLDTC, 0x51, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(HCATLDTCTO, 0x52, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(OTGCONTROL, 0x62, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(OTGSTATUS, 0x67, REG_WIDTH_16, REG_ACCESS_R);
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ISP1362_REG(OTGINT, 0x68, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(OTGINTENB, 0x69, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(OTGTIMER, 0x6A, REG_WIDTH_16, REG_ACCESS_RW);
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ISP1362_REG(OTGALTTMR, 0x6C, REG_WIDTH_16, REG_ACCESS_RW);
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/* Philips transfer descriptor, cpu-endian */
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struct ptd {
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u16 count;
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#define PTD_COUNT_MSK (0x3ff << 0)
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#define PTD_TOGGLE_MSK (1 << 10)
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#define PTD_ACTIVE_MSK (1 << 11)
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#define PTD_CC_MSK (0xf << 12)
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u16 mps;
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#define PTD_MPS_MSK (0x3ff << 0)
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#define PTD_SPD_MSK (1 << 10)
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#define PTD_LAST_MSK (1 << 11)
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#define PTD_EP_MSK (0xf << 12)
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u16 len;
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#define PTD_LEN_MSK (0x3ff << 0)
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#define PTD_DIR_MSK (3 << 10)
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#define PTD_DIR_SETUP (0)
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#define PTD_DIR_OUT (1)
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#define PTD_DIR_IN (2)
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u16 faddr;
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#define PTD_FA_MSK (0x7f << 0)
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/* PTD Byte 7: [StartingFrame (if ISO PTD) | StartingFrame[0..4], PollingRate[0..2] (if INT PTD)] */
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#define PTD_SF_ISO_MSK (0xff << 8)
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#define PTD_SF_INT_MSK (0x1f << 8)
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#define PTD_PR_MSK (0x07 << 13)
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} __attribute__ ((packed, aligned(2)));
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#define PTD_HEADER_SIZE sizeof(struct ptd)
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/* ------------------------------------------------------------------------- */
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/* Copied from ohci.h: */
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/*
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* Hardware transfer status codes -- CC from PTD
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*/
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#define PTD_CC_NOERROR 0x00
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#define PTD_CC_CRC 0x01
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#define PTD_CC_BITSTUFFING 0x02
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#define PTD_CC_DATATOGGLEM 0x03
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#define PTD_CC_STALL 0x04
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#define PTD_DEVNOTRESP 0x05
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#define PTD_PIDCHECKFAIL 0x06
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#define PTD_UNEXPECTEDPID 0x07
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#define PTD_DATAOVERRUN 0x08
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#define PTD_DATAUNDERRUN 0x09
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/* 0x0A, 0x0B reserved for hardware */
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#define PTD_BUFFEROVERRUN 0x0C
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#define PTD_BUFFERUNDERRUN 0x0D
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/* 0x0E, 0x0F reserved for HCD */
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#define PTD_NOTACCESSED 0x0F
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/* map OHCI TD status codes (CC) to errno values */
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static const int cc_to_error[16] = {
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/* No Error */ 0,
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/* CRC Error */ -EILSEQ,
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/* Bit Stuff */ -EPROTO,
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/* Data Togg */ -EILSEQ,
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/* Stall */ -EPIPE,
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/* DevNotResp */ -ETIMEDOUT,
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/* PIDCheck */ -EPROTO,
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/* UnExpPID */ -EPROTO,
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/* DataOver */ -EOVERFLOW,
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/* DataUnder */ -EREMOTEIO,
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/* (for hw) */ -EIO,
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/* (for hw) */ -EIO,
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/* BufferOver */ -ECOMM,
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/* BuffUnder */ -ENOSR,
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/* (for HCD) */ -EALREADY,
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/* (for HCD) */ -EALREADY
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};
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/*
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* HcControl (control) register masks
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*/
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#define OHCI_CTRL_HCFS (3 << 6) /* host controller functional state */
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#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
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#define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */
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/* pre-shifted values for HCFS */
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# define OHCI_USB_RESET (0 << 6)
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# define OHCI_USB_RESUME (1 << 6)
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# define OHCI_USB_OPER (2 << 6)
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# define OHCI_USB_SUSPEND (3 << 6)
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/*
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* HcCommandStatus (cmdstatus) register masks
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*/
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#define OHCI_HCR (1 << 0) /* host controller reset */
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#define OHCI_SOC (3 << 16) /* scheduling overrun count */
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/*
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* masks used with interrupt registers:
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* HcInterruptStatus (intrstatus)
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* HcInterruptEnable (intrenable)
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* HcInterruptDisable (intrdisable)
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*/
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#define OHCI_INTR_SO (1 << 0) /* scheduling overrun */
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#define OHCI_INTR_WDH (1 << 1) /* writeback of done_head */
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#define OHCI_INTR_SF (1 << 2) /* start frame */
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#define OHCI_INTR_RD (1 << 3) /* resume detect */
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#define OHCI_INTR_UE (1 << 4) /* unrecoverable error */
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#define OHCI_INTR_FNO (1 << 5) /* frame number overflow */
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#define OHCI_INTR_RHSC (1 << 6) /* root hub status change */
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#define OHCI_INTR_OC (1 << 30) /* ownership change */
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#define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */
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/* roothub.portstatus [i] bits */
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#define RH_PS_CCS 0x00000001 /* current connect status */
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#define RH_PS_PES 0x00000002 /* port enable status*/
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#define RH_PS_PSS 0x00000004 /* port suspend status */
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#define RH_PS_POCI 0x00000008 /* port over current indicator */
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#define RH_PS_PRS 0x00000010 /* port reset status */
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#define RH_PS_PPS 0x00000100 /* port power status */
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#define RH_PS_LSDA 0x00000200 /* low speed device attached */
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#define RH_PS_CSC 0x00010000 /* connect status change */
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#define RH_PS_PESC 0x00020000 /* port enable status change */
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#define RH_PS_PSSC 0x00040000 /* port suspend status change */
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#define RH_PS_OCIC 0x00080000 /* over current indicator change */
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#define RH_PS_PRSC 0x00100000 /* port reset status change */
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/* roothub.status bits */
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#define RH_HS_LPS 0x00000001 /* local power status */
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#define RH_HS_OCI 0x00000002 /* over current indicator */
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#define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */
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#define RH_HS_LPSC 0x00010000 /* local power status change */
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#define RH_HS_OCIC 0x00020000 /* over current indicator change */
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#define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */
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/* roothub.b masks */
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#define RH_B_DR 0x0000ffff /* device removable flags */
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#define RH_B_PPCM 0xffff0000 /* port power control mask */
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/* roothub.a masks */
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#define RH_A_NDP (0xff << 0) /* number of downstream ports */
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#define RH_A_PSM (1 << 8) /* power switching mode */
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#define RH_A_NPS (1 << 9) /* no power switching */
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#define RH_A_DT (1 << 10) /* device type (mbz) */
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#define RH_A_OCPM (1 << 11) /* over current protection mode */
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#define RH_A_NOCP (1 << 12) /* no over current protection */
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#define RH_A_POTPGT (0xff << 24) /* power on to power good time */
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#define FI 0x2edf /* 12000 bits per frame (-1) */
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#define FSMP(fi) (0x7fff & ((6 * ((fi) - 210)) / 7))
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#define LSTHRESH 0x628 /* lowspeed bit threshold */
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/* ------------------------------------------------------------------------- */
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/* PTD accessor macros. */
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#define PTD_GET_COUNT(p) (((p)->count & PTD_COUNT_MSK) >> 0)
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#define PTD_COUNT(v) (((v) << 0) & PTD_COUNT_MSK)
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#define PTD_GET_TOGGLE(p) (((p)->count & PTD_TOGGLE_MSK) >> 10)
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#define PTD_TOGGLE(v) (((v) << 10) & PTD_TOGGLE_MSK)
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#define PTD_GET_ACTIVE(p) (((p)->count & PTD_ACTIVE_MSK) >> 11)
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#define PTD_ACTIVE(v) (((v) << 11) & PTD_ACTIVE_MSK)
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#define PTD_GET_CC(p) (((p)->count & PTD_CC_MSK) >> 12)
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#define PTD_CC(v) (((v) << 12) & PTD_CC_MSK)
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#define PTD_GET_MPS(p) (((p)->mps & PTD_MPS_MSK) >> 0)
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#define PTD_MPS(v) (((v) << 0) & PTD_MPS_MSK)
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#define PTD_GET_SPD(p) (((p)->mps & PTD_SPD_MSK) >> 10)
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#define PTD_SPD(v) (((v) << 10) & PTD_SPD_MSK)
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#define PTD_GET_LAST(p) (((p)->mps & PTD_LAST_MSK) >> 11)
|
|
#define PTD_LAST(v) (((v) << 11) & PTD_LAST_MSK)
|
|
#define PTD_GET_EP(p) (((p)->mps & PTD_EP_MSK) >> 12)
|
|
#define PTD_EP(v) (((v) << 12) & PTD_EP_MSK)
|
|
#define PTD_GET_LEN(p) (((p)->len & PTD_LEN_MSK) >> 0)
|
|
#define PTD_LEN(v) (((v) << 0) & PTD_LEN_MSK)
|
|
#define PTD_GET_DIR(p) (((p)->len & PTD_DIR_MSK) >> 10)
|
|
#define PTD_DIR(v) (((v) << 10) & PTD_DIR_MSK)
|
|
#define PTD_GET_FA(p) (((p)->faddr & PTD_FA_MSK) >> 0)
|
|
#define PTD_FA(v) (((v) << 0) & PTD_FA_MSK)
|
|
#define PTD_GET_SF_INT(p) (((p)->faddr & PTD_SF_INT_MSK) >> 8)
|
|
#define PTD_SF_INT(v) (((v) << 8) & PTD_SF_INT_MSK)
|
|
#define PTD_GET_SF_ISO(p) (((p)->faddr & PTD_SF_ISO_MSK) >> 8)
|
|
#define PTD_SF_ISO(v) (((v) << 8) & PTD_SF_ISO_MSK)
|
|
#define PTD_GET_PR(p) (((p)->faddr & PTD_PR_MSK) >> 13)
|
|
#define PTD_PR(v) (((v) << 13) & PTD_PR_MSK)
|
|
|
|
#define LOG2_PERIODIC_SIZE 5 /* arbitrary; this matches OHCI */
|
|
#define PERIODIC_SIZE (1 << LOG2_PERIODIC_SIZE)
|
|
|
|
struct isp1362_ep {
|
|
struct usb_host_endpoint *hep;
|
|
struct usb_device *udev;
|
|
|
|
/* philips transfer descriptor */
|
|
struct ptd ptd;
|
|
|
|
u8 maxpacket;
|
|
u8 epnum;
|
|
u8 nextpid;
|
|
u16 error_count;
|
|
u16 length; /* of current packet */
|
|
s16 ptd_offset; /* buffer offset in ISP1362 where
|
|
PTD has been stored
|
|
(for access thru HCDIRDATA) */
|
|
int ptd_index;
|
|
int num_ptds;
|
|
void *data; /* to databuf */
|
|
/* queue of active EPs (the ones transmitted to the chip) */
|
|
struct list_head active;
|
|
|
|
/* periodic schedule */
|
|
u8 branch;
|
|
u16 interval;
|
|
u16 load;
|
|
u16 last_iso;
|
|
|
|
/* async schedule */
|
|
struct list_head schedule; /* list of all EPs that need processing */
|
|
struct list_head remove_list;
|
|
int num_req;
|
|
};
|
|
|
|
struct isp1362_ep_queue {
|
|
struct list_head active; /* list of PTDs currently processed by HC */
|
|
atomic_t finishing;
|
|
unsigned long buf_map;
|
|
unsigned long skip_map;
|
|
int free_ptd;
|
|
u16 buf_start;
|
|
u16 buf_size;
|
|
u16 blk_size; /* PTD buffer block size for ATL and INTL */
|
|
u8 buf_count;
|
|
u8 buf_avail;
|
|
char name[16];
|
|
|
|
/* for statistical tracking */
|
|
u8 stat_maxptds; /* Max # of ptds seen simultaneously in fifo */
|
|
u8 ptd_count; /* number of ptds submitted to this queue */
|
|
};
|
|
|
|
struct isp1362_hcd {
|
|
spinlock_t lock;
|
|
void __iomem *addr_reg;
|
|
void __iomem *data_reg;
|
|
|
|
struct isp1362_platform_data *board;
|
|
|
|
unsigned long stat1, stat2, stat4, stat8, stat16;
|
|
|
|
/* HC registers */
|
|
u32 intenb; /* "OHCI" interrupts */
|
|
u16 irqenb; /* uP interrupts */
|
|
|
|
/* Root hub registers */
|
|
u32 rhdesca;
|
|
u32 rhdescb;
|
|
u32 rhstatus;
|
|
u32 rhport[MAX_ROOT_PORTS];
|
|
unsigned long next_statechange;
|
|
|
|
/* HC control reg shadow copy */
|
|
u32 hc_control;
|
|
|
|
/* async schedule: control, bulk */
|
|
struct list_head async;
|
|
|
|
/* periodic schedule: int */
|
|
u16 load[PERIODIC_SIZE];
|
|
struct list_head periodic;
|
|
u16 fmindex;
|
|
|
|
/* periodic schedule: isochronous */
|
|
struct list_head isoc;
|
|
unsigned int istl_flip:1;
|
|
unsigned int irq_active:1;
|
|
|
|
/* Schedules for the current frame */
|
|
struct isp1362_ep_queue atl_queue;
|
|
struct isp1362_ep_queue intl_queue;
|
|
struct isp1362_ep_queue istl_queue[2];
|
|
|
|
/* list of PTDs retrieved from HC */
|
|
struct list_head remove_list;
|
|
enum {
|
|
ISP1362_INT_SOF,
|
|
ISP1362_INT_ISTL0,
|
|
ISP1362_INT_ISTL1,
|
|
ISP1362_INT_EOT,
|
|
ISP1362_INT_OPR,
|
|
ISP1362_INT_SUSP,
|
|
ISP1362_INT_CLKRDY,
|
|
ISP1362_INT_INTL,
|
|
ISP1362_INT_ATL,
|
|
ISP1362_INT_OTG,
|
|
NUM_ISP1362_IRQS
|
|
} IRQ_NAMES;
|
|
unsigned int irq_stat[NUM_ISP1362_IRQS];
|
|
int req_serial;
|
|
};
|
|
|
|
static inline const char *ISP1362_INT_NAME(int n)
|
|
{
|
|
switch (n) {
|
|
case ISP1362_INT_SOF: return "SOF";
|
|
case ISP1362_INT_ISTL0: return "ISTL0";
|
|
case ISP1362_INT_ISTL1: return "ISTL1";
|
|
case ISP1362_INT_EOT: return "EOT";
|
|
case ISP1362_INT_OPR: return "OPR";
|
|
case ISP1362_INT_SUSP: return "SUSP";
|
|
case ISP1362_INT_CLKRDY: return "CLKRDY";
|
|
case ISP1362_INT_INTL: return "INTL";
|
|
case ISP1362_INT_ATL: return "ATL";
|
|
case ISP1362_INT_OTG: return "OTG";
|
|
default: return "unknown";
|
|
}
|
|
}
|
|
|
|
static inline void ALIGNSTAT(struct isp1362_hcd *isp1362_hcd, void *ptr)
|
|
{
|
|
unsigned long p = (unsigned long)ptr;
|
|
if (!(p & 0xf))
|
|
isp1362_hcd->stat16++;
|
|
else if (!(p & 0x7))
|
|
isp1362_hcd->stat8++;
|
|
else if (!(p & 0x3))
|
|
isp1362_hcd->stat4++;
|
|
else if (!(p & 0x1))
|
|
isp1362_hcd->stat2++;
|
|
else
|
|
isp1362_hcd->stat1++;
|
|
}
|
|
|
|
static inline struct isp1362_hcd *hcd_to_isp1362_hcd(struct usb_hcd *hcd)
|
|
{
|
|
return (struct isp1362_hcd *) (hcd->hcd_priv);
|
|
}
|
|
|
|
static inline struct usb_hcd *isp1362_hcd_to_hcd(struct isp1362_hcd *isp1362_hcd)
|
|
{
|
|
return container_of((void *)isp1362_hcd, struct usb_hcd, hcd_priv);
|
|
}
|
|
|
|
#define frame_before(f1, f2) ((s16)((u16)f1 - (u16)f2) < 0)
|
|
|
|
/*
|
|
* ISP1362 HW Interface
|
|
*/
|
|
|
|
#define DBG(level, fmt...) \
|
|
do { \
|
|
if (dbg_level > level) \
|
|
pr_debug(fmt); \
|
|
} while (0)
|
|
|
|
#ifdef VERBOSE
|
|
# define VDBG(fmt...) DBG(3, fmt)
|
|
#else
|
|
# define VDBG(fmt...) do {} while (0)
|
|
#endif
|
|
|
|
#ifdef REGISTERS
|
|
# define RDBG(fmt...) DBG(1, fmt)
|
|
#else
|
|
# define RDBG(fmt...) do {} while (0)
|
|
#endif
|
|
|
|
#ifdef URB_TRACE
|
|
#define URB_DBG(fmt...) DBG(0, fmt)
|
|
#else
|
|
#define URB_DBG(fmt...) do {} while (0)
|
|
#endif
|
|
|
|
|
|
#if USE_PLATFORM_DELAY
|
|
#if USE_NDELAY
|
|
#error USE_PLATFORM_DELAY and USE_NDELAY defined simultaneously.
|
|
#endif
|
|
#define isp1362_delay(h, d) (h)->board->delay(isp1362_hcd_to_hcd(h)->self.controller, d)
|
|
#elif USE_NDELAY
|
|
#define isp1362_delay(h, d) ndelay(d)
|
|
#else
|
|
#define isp1362_delay(h, d) do {} while (0)
|
|
#endif
|
|
|
|
#define get_urb(ep) ({ \
|
|
BUG_ON(list_empty(&ep->hep->urb_list)); \
|
|
container_of(ep->hep->urb_list.next, struct urb, urb_list); \
|
|
})
|
|
|
|
/* basic access functions for ISP1362 chip registers */
|
|
/* NOTE: The contents of the address pointer register cannot be read back! The driver must ensure,
|
|
* that all register accesses are performed with interrupts disabled, since the interrupt
|
|
* handler has no way of restoring the previous state.
|
|
*/
|
|
static void isp1362_write_addr(struct isp1362_hcd *isp1362_hcd, isp1362_reg_t reg)
|
|
{
|
|
REG_ACCESS_TEST(reg);
|
|
DUMMY_DELAY_ACCESS;
|
|
writew(ISP1362_REG_NO(reg), isp1362_hcd->addr_reg);
|
|
DUMMY_DELAY_ACCESS;
|
|
isp1362_delay(isp1362_hcd, 1);
|
|
}
|
|
|
|
static void isp1362_write_data16(struct isp1362_hcd *isp1362_hcd, u16 val)
|
|
{
|
|
DUMMY_DELAY_ACCESS;
|
|
writew(val, isp1362_hcd->data_reg);
|
|
}
|
|
|
|
static u16 isp1362_read_data16(struct isp1362_hcd *isp1362_hcd)
|
|
{
|
|
u16 val;
|
|
|
|
DUMMY_DELAY_ACCESS;
|
|
val = readw(isp1362_hcd->data_reg);
|
|
|
|
return val;
|
|
}
|
|
|
|
static void isp1362_write_data32(struct isp1362_hcd *isp1362_hcd, u32 val)
|
|
{
|
|
#if USE_32BIT
|
|
DUMMY_DELAY_ACCESS;
|
|
writel(val, isp1362_hcd->data_reg);
|
|
#else
|
|
DUMMY_DELAY_ACCESS;
|
|
writew((u16)val, isp1362_hcd->data_reg);
|
|
DUMMY_DELAY_ACCESS;
|
|
writew(val >> 16, isp1362_hcd->data_reg);
|
|
#endif
|
|
}
|
|
|
|
static u32 isp1362_read_data32(struct isp1362_hcd *isp1362_hcd)
|
|
{
|
|
u32 val;
|
|
|
|
#if USE_32BIT
|
|
DUMMY_DELAY_ACCESS;
|
|
val = readl(isp1362_hcd->data_reg);
|
|
#else
|
|
DUMMY_DELAY_ACCESS;
|
|
val = (u32)readw(isp1362_hcd->data_reg);
|
|
DUMMY_DELAY_ACCESS;
|
|
val |= (u32)readw(isp1362_hcd->data_reg) << 16;
|
|
#endif
|
|
return val;
|
|
}
|
|
|
|
/* use readsw/writesw to access the fifo whenever possible */
|
|
/* assume HCDIRDATA or XFERCTR & addr_reg have been set up */
|
|
static void isp1362_read_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 len)
|
|
{
|
|
u8 *dp = buf;
|
|
u16 data;
|
|
|
|
if (!len)
|
|
return;
|
|
|
|
RDBG("%s: Reading %d byte from fifo to mem @ %p\n", __func__, len, buf);
|
|
#if USE_32BIT
|
|
if (len >= 4) {
|
|
RDBG("%s: Using readsl for %d dwords\n", __func__, len >> 2);
|
|
readsl(isp1362_hcd->data_reg, dp, len >> 2);
|
|
dp += len & ~3;
|
|
len &= 3;
|
|
}
|
|
#endif
|
|
if (len >= 2) {
|
|
RDBG("%s: Using readsw for %d words\n", __func__, len >> 1);
|
|
insw((unsigned long)isp1362_hcd->data_reg, dp, len >> 1);
|
|
dp += len & ~1;
|
|
len &= 1;
|
|
}
|
|
|
|
BUG_ON(len & ~1);
|
|
if (len > 0) {
|
|
data = isp1362_read_data16(isp1362_hcd);
|
|
RDBG("%s: Reading trailing byte %02x to mem @ %08x\n", __func__,
|
|
(u8)data, (u32)dp);
|
|
*dp = (u8)data;
|
|
}
|
|
}
|
|
|
|
static void isp1362_write_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 len)
|
|
{
|
|
u8 *dp = buf;
|
|
u16 data;
|
|
|
|
if (!len)
|
|
return;
|
|
|
|
if ((unsigned long)dp & 0x1) {
|
|
/* not aligned */
|
|
for (; len > 1; len -= 2) {
|
|
data = *dp++;
|
|
data |= *dp++ << 8;
|
|
isp1362_write_data16(isp1362_hcd, data);
|
|
}
|
|
if (len)
|
|
isp1362_write_data16(isp1362_hcd, *dp);
|
|
return;
|
|
}
|
|
|
|
RDBG("%s: Writing %d byte to fifo from memory @%p\n", __func__, len, buf);
|
|
#if USE_32BIT
|
|
if (len >= 4) {
|
|
RDBG("%s: Using writesl for %d dwords\n", __func__, len >> 2);
|
|
writesl(isp1362_hcd->data_reg, dp, len >> 2);
|
|
dp += len & ~3;
|
|
len &= 3;
|
|
}
|
|
#endif
|
|
if (len >= 2) {
|
|
RDBG("%s: Using writesw for %d words\n", __func__, len >> 1);
|
|
outsw((unsigned long)isp1362_hcd->data_reg, dp, len >> 1);
|
|
dp += len & ~1;
|
|
len &= 1;
|
|
}
|
|
|
|
BUG_ON(len & ~1);
|
|
if (len > 0) {
|
|
/* finally write any trailing byte; we don't need to care
|
|
* about the high byte of the last word written
|
|
*/
|
|
data = (u16)*dp;
|
|
RDBG("%s: Sending trailing byte %02x from mem @ %08x\n", __func__,
|
|
data, (u32)dp);
|
|
isp1362_write_data16(isp1362_hcd, data);
|
|
}
|
|
}
|
|
|
|
#define isp1362_read_reg16(d, r) ({ \
|
|
u16 __v; \
|
|
REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_16); \
|
|
isp1362_write_addr(d, ISP1362_REG_##r); \
|
|
__v = isp1362_read_data16(d); \
|
|
RDBG("%s: Read %04x from %s[%02x]\n", __func__, __v, #r, \
|
|
ISP1362_REG_NO(ISP1362_REG_##r)); \
|
|
__v; \
|
|
})
|
|
|
|
#define isp1362_read_reg32(d, r) ({ \
|
|
u32 __v; \
|
|
REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_32); \
|
|
isp1362_write_addr(d, ISP1362_REG_##r); \
|
|
__v = isp1362_read_data32(d); \
|
|
RDBG("%s: Read %08x from %s[%02x]\n", __func__, __v, #r, \
|
|
ISP1362_REG_NO(ISP1362_REG_##r)); \
|
|
__v; \
|
|
})
|
|
|
|
#define isp1362_write_reg16(d, r, v) { \
|
|
REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_16); \
|
|
isp1362_write_addr(d, (ISP1362_REG_##r) | ISP1362_REG_WRITE_OFFSET); \
|
|
isp1362_write_data16(d, (u16)(v)); \
|
|
RDBG("%s: Wrote %04x to %s[%02x]\n", __func__, (u16)(v), #r, \
|
|
ISP1362_REG_NO(ISP1362_REG_##r)); \
|
|
}
|
|
|
|
#define isp1362_write_reg32(d, r, v) { \
|
|
REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_32); \
|
|
isp1362_write_addr(d, (ISP1362_REG_##r) | ISP1362_REG_WRITE_OFFSET); \
|
|
isp1362_write_data32(d, (u32)(v)); \
|
|
RDBG("%s: Wrote %08x to %s[%02x]\n", __func__, (u32)(v), #r, \
|
|
ISP1362_REG_NO(ISP1362_REG_##r)); \
|
|
}
|
|
|
|
#define isp1362_set_mask16(d, r, m) { \
|
|
u16 __v; \
|
|
__v = isp1362_read_reg16(d, r); \
|
|
if ((__v | m) != __v) \
|
|
isp1362_write_reg16(d, r, __v | m); \
|
|
}
|
|
|
|
#define isp1362_clr_mask16(d, r, m) { \
|
|
u16 __v; \
|
|
__v = isp1362_read_reg16(d, r); \
|
|
if ((__v & ~m) != __v) \
|
|
isp1362_write_reg16(d, r, __v & ~m); \
|
|
}
|
|
|
|
#define isp1362_set_mask32(d, r, m) { \
|
|
u32 __v; \
|
|
__v = isp1362_read_reg32(d, r); \
|
|
if ((__v | m) != __v) \
|
|
isp1362_write_reg32(d, r, __v | m); \
|
|
}
|
|
|
|
#define isp1362_clr_mask32(d, r, m) { \
|
|
u32 __v; \
|
|
__v = isp1362_read_reg32(d, r); \
|
|
if ((__v & ~m) != __v) \
|
|
isp1362_write_reg32(d, r, __v & ~m); \
|
|
}
|
|
|
|
#define isp1362_show_reg(d, r) { \
|
|
if ((ISP1362_REG_##r & REG_WIDTH_MASK) == REG_WIDTH_32) \
|
|
DBG(0, "%-12s[%02x]: %08x\n", #r, \
|
|
ISP1362_REG_NO(ISP1362_REG_##r), isp1362_read_reg32(d, r)); \
|
|
else \
|
|
DBG(0, "%-12s[%02x]: %04x\n", #r, \
|
|
ISP1362_REG_NO(ISP1362_REG_##r), isp1362_read_reg16(d, r)); \
|
|
}
|
|
|
|
static void isp1362_write_diraddr(struct isp1362_hcd *isp1362_hcd, u16 offset, u16 len)
|
|
{
|
|
len = (len + 1) & ~1;
|
|
|
|
isp1362_clr_mask16(isp1362_hcd, HCDMACFG, HCDMACFG_CTR_ENABLE);
|
|
isp1362_write_reg32(isp1362_hcd, HCDIRADDR,
|
|
HCDIRADDR_ADDR(offset) | HCDIRADDR_COUNT(len));
|
|
}
|
|
|
|
static void isp1362_read_buffer(struct isp1362_hcd *isp1362_hcd, void *buf, u16 offset, int len)
|
|
{
|
|
isp1362_write_diraddr(isp1362_hcd, offset, len);
|
|
|
|
DBG(3, "%s: Reading %d byte from buffer @%04x to memory @ %p\n",
|
|
__func__, len, offset, buf);
|
|
|
|
isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
|
|
|
|
isp1362_write_addr(isp1362_hcd, ISP1362_REG_HCDIRDATA);
|
|
|
|
isp1362_read_fifo(isp1362_hcd, buf, len);
|
|
isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
|
|
}
|
|
|
|
static void isp1362_write_buffer(struct isp1362_hcd *isp1362_hcd, void *buf, u16 offset, int len)
|
|
{
|
|
isp1362_write_diraddr(isp1362_hcd, offset, len);
|
|
|
|
DBG(3, "%s: Writing %d byte to buffer @%04x from memory @ %p\n",
|
|
__func__, len, offset, buf);
|
|
|
|
isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
|
|
|
|
isp1362_write_addr(isp1362_hcd, ISP1362_REG_HCDIRDATA | ISP1362_REG_WRITE_OFFSET);
|
|
isp1362_write_fifo(isp1362_hcd, buf, len);
|
|
|
|
isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
|
|
}
|
|
|
|
static void __attribute__((unused)) dump_data(char *buf, int len)
|
|
{
|
|
if (dbg_level > 0) {
|
|
int k;
|
|
int lf = 0;
|
|
|
|
for (k = 0; k < len; ++k) {
|
|
if (!lf)
|
|
DBG(0, "%04x:", k);
|
|
printk(" %02x", ((u8 *) buf)[k]);
|
|
lf = 1;
|
|
if (!k)
|
|
continue;
|
|
if (k % 16 == 15) {
|
|
printk("\n");
|
|
lf = 0;
|
|
continue;
|
|
}
|
|
if (k % 8 == 7)
|
|
printk(" ");
|
|
if (k % 4 == 3)
|
|
printk(" ");
|
|
}
|
|
if (lf)
|
|
printk("\n");
|
|
}
|
|
}
|
|
|
|
#if defined(PTD_TRACE)
|
|
|
|
static void dump_ptd(struct ptd *ptd)
|
|
{
|
|
DBG(0, "EP %p: CC=%x EP=%d DIR=%x CNT=%d LEN=%d MPS=%d TGL=%x ACT=%x FA=%d SPD=%x SF=%x PR=%x LST=%x\n",
|
|
container_of(ptd, struct isp1362_ep, ptd),
|
|
PTD_GET_CC(ptd), PTD_GET_EP(ptd), PTD_GET_DIR(ptd),
|
|
PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
|
|
PTD_GET_TOGGLE(ptd), PTD_GET_ACTIVE(ptd), PTD_GET_FA(ptd),
|
|
PTD_GET_SPD(ptd), PTD_GET_SF_INT(ptd), PTD_GET_PR(ptd), PTD_GET_LAST(ptd));
|
|
DBG(0, " %04x %04x %04x %04x\n", ptd->count, ptd->mps, ptd->len, ptd->faddr);
|
|
}
|
|
|
|
static void dump_ptd_out_data(struct ptd *ptd, u8 *buf)
|
|
{
|
|
if (dbg_level > 0) {
|
|
if (PTD_GET_DIR(ptd) != PTD_DIR_IN && PTD_GET_LEN(ptd)) {
|
|
DBG(0, "--out->\n");
|
|
dump_data(buf, PTD_GET_LEN(ptd));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void dump_ptd_in_data(struct ptd *ptd, u8 *buf)
|
|
{
|
|
if (dbg_level > 0) {
|
|
if (PTD_GET_DIR(ptd) == PTD_DIR_IN && PTD_GET_COUNT(ptd)) {
|
|
DBG(0, "<--in--\n");
|
|
dump_data(buf, PTD_GET_COUNT(ptd));
|
|
}
|
|
DBG(0, "-----\n");
|
|
}
|
|
}
|
|
|
|
static void dump_ptd_queue(struct isp1362_ep_queue *epq)
|
|
{
|
|
struct isp1362_ep *ep;
|
|
int dbg = dbg_level;
|
|
|
|
dbg_level = 1;
|
|
list_for_each_entry(ep, &epq->active, active) {
|
|
dump_ptd(&ep->ptd);
|
|
dump_data(ep->data, ep->length);
|
|
}
|
|
dbg_level = dbg;
|
|
}
|
|
#else
|
|
#define dump_ptd(ptd) do {} while (0)
|
|
#define dump_ptd_in_data(ptd, buf) do {} while (0)
|
|
#define dump_ptd_out_data(ptd, buf) do {} while (0)
|
|
#define dump_ptd_data(ptd, buf) do {} while (0)
|
|
#define dump_ptd_queue(epq) do {} while (0)
|
|
#endif
|