diff options
Diffstat (limited to 'kernel/drivers/usb/renesas_usbhs/pipe.c')
| -rw-r--r-- | kernel/drivers/usb/renesas_usbhs/pipe.c | 893 |
1 files changed, 893 insertions, 0 deletions
diff --git a/kernel/drivers/usb/renesas_usbhs/pipe.c b/kernel/drivers/usb/renesas_usbhs/pipe.c new file mode 100644 index 000000000..4f9c33561 --- /dev/null +++ b/kernel/drivers/usb/renesas_usbhs/pipe.c @@ -0,0 +1,893 @@ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ +#include <linux/delay.h> +#include <linux/slab.h> +#include "common.h" +#include "pipe.h" + +/* + * macros + */ +#define usbhsp_addr_offset(p) ((usbhs_pipe_number(p) - 1) * 2) + +#define usbhsp_flags_set(p, f) ((p)->flags |= USBHS_PIPE_FLAGS_##f) +#define usbhsp_flags_clr(p, f) ((p)->flags &= ~USBHS_PIPE_FLAGS_##f) +#define usbhsp_flags_has(p, f) ((p)->flags & USBHS_PIPE_FLAGS_##f) +#define usbhsp_flags_init(p) do {(p)->flags = 0; } while (0) + +/* + * for debug + */ +static char *usbhsp_pipe_name[] = { + [USB_ENDPOINT_XFER_CONTROL] = "DCP", + [USB_ENDPOINT_XFER_BULK] = "BULK", + [USB_ENDPOINT_XFER_INT] = "INT", + [USB_ENDPOINT_XFER_ISOC] = "ISO", +}; + +char *usbhs_pipe_name(struct usbhs_pipe *pipe) +{ + return usbhsp_pipe_name[usbhs_pipe_type(pipe)]; +} + +/* + * DCPCTR/PIPEnCTR functions + */ +static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + int offset = usbhsp_addr_offset(pipe); + + if (usbhs_pipe_is_dcp(pipe)) + usbhs_bset(priv, DCPCTR, mask, val); + else + usbhs_bset(priv, PIPEnCTR + offset, mask, val); +} + +static u16 usbhsp_pipectrl_get(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + int offset = usbhsp_addr_offset(pipe); + + if (usbhs_pipe_is_dcp(pipe)) + return usbhs_read(priv, DCPCTR); + else + return usbhs_read(priv, PIPEnCTR + offset); +} + +/* + * DCP/PIPE functions + */ +static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe, + u16 dcp_reg, u16 pipe_reg, + u16 mask, u16 val) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + if (usbhs_pipe_is_dcp(pipe)) + usbhs_bset(priv, dcp_reg, mask, val); + else + usbhs_bset(priv, pipe_reg, mask, val); +} + +static u16 __usbhsp_pipe_xxx_get(struct usbhs_pipe *pipe, + u16 dcp_reg, u16 pipe_reg) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + if (usbhs_pipe_is_dcp(pipe)) + return usbhs_read(priv, dcp_reg); + else + return usbhs_read(priv, pipe_reg); +} + +/* + * DCPCFG/PIPECFG functions + */ +static void usbhsp_pipe_cfg_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + __usbhsp_pipe_xxx_set(pipe, DCPCFG, PIPECFG, mask, val); +} + +static u16 usbhsp_pipe_cfg_get(struct usbhs_pipe *pipe) +{ + return __usbhsp_pipe_xxx_get(pipe, DCPCFG, PIPECFG); +} + +/* + * PIPEnTRN/PIPEnTRE functions + */ +static void usbhsp_pipe_trn_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + int num = usbhs_pipe_number(pipe); + u16 reg; + + /* + * It is impossible to calculate address, + * since PIPEnTRN addresses were mapped randomly. + */ +#define CASE_PIPExTRN(a) \ + case 0x ## a: \ + reg = PIPE ## a ## TRN; \ + break; + + switch (num) { + CASE_PIPExTRN(1); + CASE_PIPExTRN(2); + CASE_PIPExTRN(3); + CASE_PIPExTRN(4); + CASE_PIPExTRN(5); + CASE_PIPExTRN(B); + CASE_PIPExTRN(C); + CASE_PIPExTRN(D); + CASE_PIPExTRN(E); + CASE_PIPExTRN(F); + CASE_PIPExTRN(9); + CASE_PIPExTRN(A); + default: + dev_err(dev, "unknown pipe (%d)\n", num); + return; + } + __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); +} + +static void usbhsp_pipe_tre_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + int num = usbhs_pipe_number(pipe); + u16 reg; + + /* + * It is impossible to calculate address, + * since PIPEnTRE addresses were mapped randomly. + */ +#define CASE_PIPExTRE(a) \ + case 0x ## a: \ + reg = PIPE ## a ## TRE; \ + break; + + switch (num) { + CASE_PIPExTRE(1); + CASE_PIPExTRE(2); + CASE_PIPExTRE(3); + CASE_PIPExTRE(4); + CASE_PIPExTRE(5); + CASE_PIPExTRE(B); + CASE_PIPExTRE(C); + CASE_PIPExTRE(D); + CASE_PIPExTRE(E); + CASE_PIPExTRE(F); + CASE_PIPExTRE(9); + CASE_PIPExTRE(A); + default: + dev_err(dev, "unknown pipe (%d)\n", num); + return; + } + + __usbhsp_pipe_xxx_set(pipe, 0, reg, mask, val); +} + +/* + * PIPEBUF + */ +static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + if (usbhs_pipe_is_dcp(pipe)) + return; + + __usbhsp_pipe_xxx_set(pipe, 0, PIPEBUF, mask, val); +} + +/* + * DCPMAXP/PIPEMAXP + */ +static void usbhsp_pipe_maxp_set(struct usbhs_pipe *pipe, u16 mask, u16 val) +{ + __usbhsp_pipe_xxx_set(pipe, DCPMAXP, PIPEMAXP, mask, val); +} + +/* + * pipe control functions + */ +static void usbhsp_pipe_select(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + /* + * On pipe, this is necessary before + * accesses to below registers. + * + * PIPESEL : usbhsp_pipe_select + * PIPECFG : usbhsp_pipe_cfg_xxx + * PIPEBUF : usbhsp_pipe_buf_xxx + * PIPEMAXP : usbhsp_pipe_maxp_xxx + * PIPEPERI + */ + + /* + * if pipe is dcp, no pipe is selected. + * it is no problem, because dcp have its register + */ + usbhs_write(priv, PIPESEL, 0xF & usbhs_pipe_number(pipe)); +} + +static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + int timeout = 1024; + u16 val; + + /* + * make sure.... + * + * Modify these bits when CSSTS = 0, PID = NAK, and no pipe number is + * specified by the CURPIPE bits. + * When changing the setting of this bit after changing + * the PID bits for the selected pipe from BUF to NAK, + * check that CSSTS = 0 and PBUSY = 0. + */ + + /* + * CURPIPE bit = 0 + * + * see also + * "Operation" + * - "Pipe Control" + * - "Pipe Control Registers Switching Procedure" + */ + usbhs_write(priv, CFIFOSEL, 0); + usbhs_pipe_disable(pipe); + + do { + val = usbhsp_pipectrl_get(pipe); + val &= CSSTS | PID_MASK; + if (!val) + return 0; + + udelay(10); + + } while (timeout--); + + return -EBUSY; +} + +int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe) +{ + u16 val; + + val = usbhsp_pipectrl_get(pipe); + if (val & BSTS) + return 0; + + return -EBUSY; +} + +/* + * PID ctrl + */ +static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe) +{ + u16 pid = usbhsp_pipectrl_get(pipe); + + pid &= PID_MASK; + + /* + * see + * "Pipe n Control Register" - "PID" + */ + switch (pid) { + case PID_STALL11: + usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); + /* fall-through */ + case PID_STALL10: + usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); + } +} + +void usbhs_pipe_disable(struct usbhs_pipe *pipe) +{ + int timeout = 1024; + u16 val; + + /* see "Pipe n Control Register" - "PID" */ + __usbhsp_pid_try_nak_if_stall(pipe); + + usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK); + + do { + val = usbhsp_pipectrl_get(pipe); + val &= PBUSY; + if (!val) + break; + + udelay(10); + } while (timeout--); +} + +void usbhs_pipe_enable(struct usbhs_pipe *pipe) +{ + /* see "Pipe n Control Register" - "PID" */ + __usbhsp_pid_try_nak_if_stall(pipe); + + usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF); +} + +void usbhs_pipe_stall(struct usbhs_pipe *pipe) +{ + u16 pid = usbhsp_pipectrl_get(pipe); + + pid &= PID_MASK; + + /* + * see + * "Pipe n Control Register" - "PID" + */ + switch (pid) { + case PID_NAK: + usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10); + break; + case PID_BUF: + usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11); + break; + } +} + +int usbhs_pipe_is_stall(struct usbhs_pipe *pipe) +{ + u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK; + + return (int)(pid == PID_STALL10 || pid == PID_STALL11); +} + +void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len) +{ + if (!usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) + return; + + /* + * clear and disable transfer counter for IN/OUT pipe + */ + usbhsp_pipe_tre_set(pipe, TRCLR | TRENB, TRCLR); + + /* + * Only IN direction bulk pipe can use transfer count. + * Without using this function, + * received data will break if it was large data size. + * see PIPEnTRN/PIPEnTRE for detail + */ + if (usbhs_pipe_is_dir_in(pipe)) { + int maxp = usbhs_pipe_get_maxpacket(pipe); + + usbhsp_pipe_trn_set(pipe, 0xffff, DIV_ROUND_UP(len, maxp)); + usbhsp_pipe_tre_set(pipe, TRENB, TRENB); /* enable */ + } +} + + +/* + * pipe setup + */ +static int usbhsp_possible_double_buffer(struct usbhs_pipe *pipe) +{ + /* + * only ISO / BULK pipe can use double buffer + */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) || + usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC)) + return 1; + + return 0; +} + +static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe, + int is_host, + int dir_in) +{ + u16 type = 0; + u16 bfre = 0; + u16 dblb = 0; + u16 cntmd = 0; + u16 dir = 0; + u16 epnum = 0; + u16 shtnak = 0; + u16 type_array[] = { + [USB_ENDPOINT_XFER_BULK] = TYPE_BULK, + [USB_ENDPOINT_XFER_INT] = TYPE_INT, + [USB_ENDPOINT_XFER_ISOC] = TYPE_ISO, + }; + int is_double = usbhsp_possible_double_buffer(pipe); + + if (usbhs_pipe_is_dcp(pipe)) + return -EINVAL; + + /* + * PIPECFG + * + * see + * - "Register Descriptions" - "PIPECFG" register + * - "Features" - "Pipe configuration" + * - "Operation" - "Pipe Control" + */ + + /* TYPE */ + type = type_array[usbhs_pipe_type(pipe)]; + + /* BFRE */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) || + usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) + bfre = 0; /* FIXME */ + + /* DBLB */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) || + usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) + dblb = (is_double) ? DBLB : 0; + + /* CNTMD */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK)) + cntmd = 0; /* FIXME */ + + /* DIR */ + if (dir_in) + usbhsp_flags_set(pipe, IS_DIR_HOST); + + if (!!is_host ^ !!dir_in) + dir |= DIR_OUT; + + if (!dir) + usbhsp_flags_set(pipe, IS_DIR_IN); + + /* SHTNAK */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) && + !dir) + shtnak = SHTNAK; + + /* EPNUM */ + epnum = 0; /* see usbhs_pipe_config_update() */ + + return type | + bfre | + dblb | + cntmd | + dir | + shtnak | + epnum; +} + +static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); + struct device *dev = usbhs_priv_to_dev(priv); + int pipe_num = usbhs_pipe_number(pipe); + int is_double = usbhsp_possible_double_buffer(pipe); + u16 buff_size; + u16 bufnmb; + u16 bufnmb_cnt; + + /* + * PIPEBUF + * + * see + * - "Register Descriptions" - "PIPEBUF" register + * - "Features" - "Pipe configuration" + * - "Operation" - "FIFO Buffer Memory" + * - "Operation" - "Pipe Control" + * + * ex) if pipe6 - pipe9 are USB_ENDPOINT_XFER_INT (SH7724) + * + * BUFNMB: PIPE + * 0: pipe0 (DCP 256byte) + * 1: - + * 2: - + * 3: - + * 4: pipe6 (INT 64byte) + * 5: pipe7 (INT 64byte) + * 6: pipe8 (INT 64byte) + * 7: pipe9 (INT 64byte) + * 8 - xx: free (for BULK, ISOC) + */ + + /* + * FIXME + * + * it doesn't have good buffer allocator + * + * DCP : 256 byte + * BULK: 512 byte + * INT : 64 byte + * ISOC: 512 byte + */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_CONTROL)) + buff_size = 256; + else if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) + buff_size = 64; + else + buff_size = 512; + + /* change buff_size to register value */ + bufnmb_cnt = (buff_size / 64) - 1; + + /* BUFNMB has been reserved for INT pipe + * see above */ + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) { + bufnmb = pipe_num - 2; + } else { + bufnmb = info->bufnmb_last; + info->bufnmb_last += bufnmb_cnt + 1; + + /* + * double buffer + */ + if (is_double) + info->bufnmb_last += bufnmb_cnt + 1; + } + + dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n", + pipe_num, buff_size, bufnmb); + + return (0x1f & bufnmb_cnt) << 10 | + (0xff & bufnmb) << 0; +} + +void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel, + u16 epnum, u16 maxp) +{ + if (devsel > 0xA) { + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + struct device *dev = usbhs_priv_to_dev(priv); + + dev_err(dev, "devsel error %d\n", devsel); + + devsel = 0; + } + + usbhsp_pipe_barrier(pipe); + + pipe->maxp = maxp; + + usbhsp_pipe_select(pipe); + usbhsp_pipe_maxp_set(pipe, 0xFFFF, + (devsel << 12) | + maxp); + + if (!usbhs_pipe_is_dcp(pipe)) + usbhsp_pipe_cfg_set(pipe, 0x000F, epnum); +} + +/* + * pipe control + */ +int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe) +{ + /* + * see + * usbhs_pipe_config_update() + * usbhs_dcp_malloc() + */ + return pipe->maxp; +} + +int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe) +{ + return usbhsp_flags_has(pipe, IS_DIR_IN); +} + +int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe) +{ + return usbhsp_flags_has(pipe, IS_DIR_HOST); +} + +int usbhs_pipe_is_running(struct usbhs_pipe *pipe) +{ + return usbhsp_flags_has(pipe, IS_RUNNING); +} + +void usbhs_pipe_running(struct usbhs_pipe *pipe, int running) +{ + if (running) + usbhsp_flags_set(pipe, IS_RUNNING); + else + usbhsp_flags_clr(pipe, IS_RUNNING); +} + +void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence) +{ + u16 mask = (SQCLR | SQSET); + u16 val; + + /* + * sequence + * 0 : data0 + * 1 : data1 + * -1 : no change + */ + switch (sequence) { + case 0: + val = SQCLR; + break; + case 1: + val = SQSET; + break; + default: + return; + } + + usbhsp_pipectrl_set(pipe, mask, val); +} + +static int usbhs_pipe_get_data_sequence(struct usbhs_pipe *pipe) +{ + return !!(usbhsp_pipectrl_get(pipe) & SQMON); +} + +void usbhs_pipe_clear(struct usbhs_pipe *pipe) +{ + if (usbhs_pipe_is_dcp(pipe)) { + usbhs_fifo_clear_dcp(pipe); + } else { + usbhsp_pipectrl_set(pipe, ACLRM, ACLRM); + usbhsp_pipectrl_set(pipe, ACLRM, 0); + } +} + +void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable) +{ + int sequence; + + if (usbhs_pipe_is_dcp(pipe)) + return; + + usbhsp_pipe_select(pipe); + /* check if the driver needs to change the BFRE value */ + if (!(enable ^ !!(usbhsp_pipe_cfg_get(pipe) & BFRE))) + return; + + sequence = usbhs_pipe_get_data_sequence(pipe); + usbhsp_pipe_cfg_set(pipe, BFRE, enable ? BFRE : 0); + usbhs_pipe_clear(pipe); + usbhs_pipe_data_sequence(pipe, sequence); +} + +static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type) +{ + struct usbhs_pipe *pos, *pipe; + int i; + + /* + * find target pipe + */ + pipe = NULL; + usbhs_for_each_pipe_with_dcp(pos, priv, i) { + if (!usbhs_pipe_type_is(pos, type)) + continue; + if (usbhsp_flags_has(pos, IS_USED)) + continue; + + pipe = pos; + break; + } + + if (!pipe) + return NULL; + + /* + * initialize pipe flags + */ + usbhsp_flags_init(pipe); + usbhsp_flags_set(pipe, IS_USED); + + return pipe; +} + +static void usbhsp_put_pipe(struct usbhs_pipe *pipe) +{ + usbhsp_flags_init(pipe); +} + +void usbhs_pipe_init(struct usbhs_priv *priv, + int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map)) +{ + struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); + struct usbhs_pipe *pipe; + int i; + + /* + * FIXME + * + * driver needs good allocator. + * + * find first free buffer area (BULK, ISOC) + * (DCP, INT area is fixed) + * + * buffer number 0 - 3 have been reserved for DCP + * see + * usbhsp_to_bufnmb + */ + info->bufnmb_last = 4; + usbhs_for_each_pipe_with_dcp(pipe, priv, i) { + if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) + info->bufnmb_last++; + + usbhsp_flags_init(pipe); + pipe->fifo = NULL; + pipe->mod_private = NULL; + INIT_LIST_HEAD(&pipe->list); + + /* pipe force init */ + usbhs_pipe_clear(pipe); + } + + info->dma_map_ctrl = dma_map_ctrl; +} + +struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv, + int endpoint_type, + int dir_in) +{ + struct device *dev = usbhs_priv_to_dev(priv); + struct usbhs_pipe *pipe; + int is_host = usbhs_mod_is_host(priv); + int ret; + u16 pipecfg, pipebuf; + + pipe = usbhsp_get_pipe(priv, endpoint_type); + if (!pipe) { + dev_err(dev, "can't get pipe (%s)\n", + usbhsp_pipe_name[endpoint_type]); + return NULL; + } + + INIT_LIST_HEAD(&pipe->list); + + usbhs_pipe_disable(pipe); + + /* make sure pipe is not busy */ + ret = usbhsp_pipe_barrier(pipe); + if (ret < 0) { + dev_err(dev, "pipe setup failed %d\n", usbhs_pipe_number(pipe)); + return NULL; + } + + pipecfg = usbhsp_setup_pipecfg(pipe, is_host, dir_in); + pipebuf = usbhsp_setup_pipebuff(pipe); + + usbhsp_pipe_select(pipe); + usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg); + usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf); + usbhs_pipe_clear(pipe); + + usbhs_pipe_sequence_data0(pipe); + + dev_dbg(dev, "enable pipe %d : %s (%s)\n", + usbhs_pipe_number(pipe), + usbhs_pipe_name(pipe), + usbhs_pipe_is_dir_in(pipe) ? "in" : "out"); + + /* + * epnum / maxp are still not set to this pipe. + * call usbhs_pipe_config_update() after this function !! + */ + + return pipe; +} + +void usbhs_pipe_free(struct usbhs_pipe *pipe) +{ + usbhsp_put_pipe(pipe); +} + +void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo) +{ + if (pipe->fifo) + pipe->fifo->pipe = NULL; + + pipe->fifo = fifo; + + if (fifo) + fifo->pipe = pipe; +} + + +/* + * dcp control + */ +struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv) +{ + struct usbhs_pipe *pipe; + + pipe = usbhsp_get_pipe(priv, USB_ENDPOINT_XFER_CONTROL); + if (!pipe) + return NULL; + + INIT_LIST_HEAD(&pipe->list); + + /* + * call usbhs_pipe_config_update() after this function !! + */ + + return pipe; +} + +void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe) +{ + struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); + + WARN_ON(!usbhs_pipe_is_dcp(pipe)); + + usbhs_pipe_enable(pipe); + + if (!usbhs_mod_is_host(priv)) /* funconly */ + usbhsp_pipectrl_set(pipe, CCPL, CCPL); +} + +void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out) +{ + usbhsp_pipe_cfg_set(pipe, DIR_OUT, + dir_out ? DIR_OUT : 0); +} + +/* + * pipe module function + */ +int usbhs_pipe_probe(struct usbhs_priv *priv) +{ + struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); + struct usbhs_pipe *pipe; + struct device *dev = usbhs_priv_to_dev(priv); + u32 *pipe_type = usbhs_get_dparam(priv, pipe_type); + int pipe_size = usbhs_get_dparam(priv, pipe_size); + int i; + + /* This driver expects 1st pipe is DCP */ + if (pipe_type[0] != USB_ENDPOINT_XFER_CONTROL) { + dev_err(dev, "1st PIPE is not DCP\n"); + return -EINVAL; + } + + info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL); + if (!info->pipe) { + dev_err(dev, "Could not allocate pipe\n"); + return -ENOMEM; + } + + info->size = pipe_size; + + /* + * init pipe + */ + usbhs_for_each_pipe_with_dcp(pipe, priv, i) { + pipe->priv = priv; + + usbhs_pipe_type(pipe) = + pipe_type[i] & USB_ENDPOINT_XFERTYPE_MASK; + + dev_dbg(dev, "pipe %x\t: %s\n", + i, usbhsp_pipe_name[pipe_type[i]]); + } + + return 0; +} + +void usbhs_pipe_remove(struct usbhs_priv *priv) +{ + struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv); + + kfree(info->pipe); +} |