From e294531dc9f2c1f5291373dcdd5013c0cdcbdee2 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Wed, 18 Jul 2007 23:10:34 +0900 Subject: USB: r8a66597-hcd: fixes some problem This patch incorporates some updates. Updates include: - Fix the problem that control transfer might fail - Change from GFP_KERNEL to GFP_ATOMIC - Clean up some coding style issue Signed-off-by: Yoshihiro Shimoda Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/r8a66597-hcd.c | 110 ++++++++++++++++++++-------------------- drivers/usb/host/r8a66597.h | 87 +++++++++++++++---------------- 2 files changed, 96 insertions(+), 101 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index a7a7070c6e2..d60f1985320 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -35,10 +35,8 @@ #include #include #include - -#include -#include -#include +#include +#include #include "../core/hcd.h" #include "r8a66597.h" @@ -54,16 +52,21 @@ static const char hcd_name[] = "r8a66597_hcd"; /* module parameters */ static unsigned short clock = XTAL12; module_param(clock, ushort, 0644); -MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0(default=0)"); +MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 " + "(default=0)"); + static unsigned short vif = LDRV; module_param(vif, ushort, 0644); MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)"); -static unsigned short endian = 0; + +static unsigned short endian; module_param(endian, ushort, 0644); -MODULE_PARM_DESC(endian, "data endian: big=256, little=0(default=0)"); +MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)"); + static unsigned short irq_sense = INTL; module_param(irq_sense, ushort, 0644); -MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0(default=32)"); +MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 " + "(default=32)"); static void packet_write(struct r8a66597 *r8a66597, u16 pipenum); static int r8a66597_get_frame(struct usb_hcd *hcd); @@ -308,7 +311,7 @@ static int make_r8a66597_device(struct r8a66597 *r8a66597, struct r8a66597_device *dev; int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */ - dev = kzalloc(sizeof(struct r8a66597_device), GFP_KERNEL); + dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC); if (dev == NULL) return -ENOMEM; @@ -611,33 +614,33 @@ static u16 get_empty_pipenum(struct r8a66597 *r8a66597, u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min; memset(array, 0, sizeof(array)); - switch(ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { - case USB_ENDPOINT_XFER_BULK: + switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + case USB_ENDPOINT_XFER_BULK: if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) array[i++] = 4; else { array[i++] = 3; array[i++] = 5; } - break; - case USB_ENDPOINT_XFER_INT: + break; + case USB_ENDPOINT_XFER_INT: if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) { array[i++] = 6; array[i++] = 7; array[i++] = 8; } else array[i++] = 9; - break; - case USB_ENDPOINT_XFER_ISOC: + break; + case USB_ENDPOINT_XFER_ISOC: if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) array[i++] = 2; else array[i++] = 1; - break; - default: - err("Illegal type"); - return 0; - } + break; + default: + err("Illegal type"); + return 0; + } i = 1; min = array[0]; @@ -654,7 +657,7 @@ static u16 get_r8a66597_type(__u8 type) { u16 r8a66597_type; - switch(type) { + switch (type) { case USB_ENDPOINT_XFER_BULK: r8a66597_type = R8A66597_BULK; break; @@ -874,7 +877,7 @@ static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port) { r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION) | (1 << USB_PORT_FEAT_C_CONNECTION); - r8a66597_write(r8a66597, (u16)~DTCH, get_intsts_reg(port)); + r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port)); r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port)); } @@ -917,7 +920,7 @@ static void prepare_setup_packet(struct r8a66597 *r8a66597, r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket, DCPMAXP); - r8a66597_write(r8a66597, (u16)~(SIGN | SACK), INTSTS1); + r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1); for (i = 0; i < 4; i++) { r8a66597_write(r8a66597, p[i], setup_addr); @@ -948,19 +951,18 @@ static void prepare_packet_read(struct r8a66597 *r8a66597, pipe_irq_disable(r8a66597, td->pipenum); pipe_setting(r8a66597, td); pipe_stop(r8a66597, td->pipe); - r8a66597_write(r8a66597, (u16)~(1 << td->pipenum), - BRDYSTS); + r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); if (td->pipe->pipetre) { r8a66597_write(r8a66597, TRCLR, - td->pipe->pipetre); + td->pipe->pipetre); r8a66597_write(r8a66597, - (urb->transfer_buffer_length - + td->maxpacket - 1) - / td->maxpacket, - td->pipe->pipetrn); + (urb->transfer_buffer_length + + td->maxpacket - 1) + / td->maxpacket, + td->pipe->pipetrn); r8a66597_bset(r8a66597, TRENB, - td->pipe->pipetre); + td->pipe->pipetre); } pipe_start(r8a66597, td->pipe); @@ -991,7 +993,7 @@ static void prepare_packet_write(struct r8a66597 *r8a66597, if (td->pipe->pipetre) r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre); } - r8a66597_write(r8a66597, (u16)~(1 << td->pipenum), BRDYSTS); + r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS); fifo_change_from_pipe(r8a66597, td->pipe); tmp = r8a66597_read(r8a66597, td->pipe->fifoctr); @@ -1009,21 +1011,21 @@ static void prepare_status_packet(struct r8a66597 *r8a66597, struct urb *urb = td->urb; r8a66597_pipe_toggle(r8a66597, td->pipe, 1); + pipe_stop(r8a66597, td->pipe); if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) { r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG); r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL); r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); - r8a66597_write(r8a66597, BVAL | BCLR, CFIFOCTR); - r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS); + r8a66597_write(r8a66597, ~BEMP0, BEMPSTS); + r8a66597_write(r8a66597, BCLR, CFIFOCTR); + r8a66597_write(r8a66597, BVAL, CFIFOCTR); enable_irq_empty(r8a66597, 0); } else { r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG); r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL); r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0); r8a66597_write(r8a66597, BCLR, CFIFOCTR); - r8a66597_write(r8a66597, (u16)~BRDY0, BRDYSTS); - r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS); enable_irq_ready(r8a66597, 0); } enable_irq_nrdy(r8a66597, 0); @@ -1269,7 +1271,7 @@ static void packet_write(struct r8a66597 *r8a66597, u16 pipenum) /* write fifo */ if (pipenum > 0) - r8a66597_write(r8a66597, (u16)~(1 << pipenum), BEMPSTS); + r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS); if (urb->transfer_buffer) { r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size); if (!usb_pipebulk(urb->pipe) || td->maxpacket != size) @@ -1362,7 +1364,7 @@ static void irq_pipe_ready(struct r8a66597 *r8a66597) mask = r8a66597_read(r8a66597, BRDYSTS) & r8a66597_read(r8a66597, BRDYENB); - r8a66597_write(r8a66597, (u16)~mask, BRDYSTS); + r8a66597_write(r8a66597, ~mask, BRDYSTS); if (mask & BRDY0) { td = r8a66597_get_td(r8a66597, 0); if (td && td->type == USB_PID_IN) @@ -1397,7 +1399,7 @@ static void irq_pipe_empty(struct r8a66597 *r8a66597) mask = r8a66597_read(r8a66597, BEMPSTS) & r8a66597_read(r8a66597, BEMPENB); - r8a66597_write(r8a66597, (u16)~mask, BEMPSTS); + r8a66597_write(r8a66597, ~mask, BEMPSTS); if (mask & BEMP0) { cfifo_change(r8a66597, 0); td = r8a66597_get_td(r8a66597, 0); @@ -1434,7 +1436,7 @@ static void irq_pipe_nrdy(struct r8a66597 *r8a66597) mask = r8a66597_read(r8a66597, NRDYSTS) & r8a66597_read(r8a66597, NRDYENB); - r8a66597_write(r8a66597, (u16)~mask, NRDYSTS); + r8a66597_write(r8a66597, ~mask, NRDYSTS); if (mask & NRDY0) { cfifo_change(r8a66597, 0); set_urb_error(r8a66597, 0); @@ -1488,14 +1490,14 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY); if (mask2) { if (mask2 & ATTCH) { - r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS2); + r8a66597_write(r8a66597, ~ATTCH, INTSTS2); r8a66597_bclr(r8a66597, ATTCHE, INTENB2); /* start usb bus sampling */ start_root_hub_sampling(r8a66597, 1); } if (mask2 & DTCH) { - r8a66597_write(r8a66597, (u16)~DTCH, INTSTS2); + r8a66597_write(r8a66597, ~DTCH, INTSTS2); r8a66597_bclr(r8a66597, DTCHE, INTENB2); r8a66597_usb_disconnect(r8a66597, 1); } @@ -1503,24 +1505,24 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd) if (mask1) { if (mask1 & ATTCH) { - r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS1); + r8a66597_write(r8a66597, ~ATTCH, INTSTS1); r8a66597_bclr(r8a66597, ATTCHE, INTENB1); /* start usb bus sampling */ start_root_hub_sampling(r8a66597, 0); } if (mask1 & DTCH) { - r8a66597_write(r8a66597, (u16)~DTCH, INTSTS1); + r8a66597_write(r8a66597, ~DTCH, INTSTS1); r8a66597_bclr(r8a66597, DTCHE, INTENB1); r8a66597_usb_disconnect(r8a66597, 0); } if (mask1 & SIGN) { - r8a66597_write(r8a66597, (u16)~SIGN, INTSTS1); + r8a66597_write(r8a66597, ~SIGN, INTSTS1); set_urb_error(r8a66597, 0); check_next_phase(r8a66597); } if (mask1 & SACK) { - r8a66597_write(r8a66597, (u16)~SACK, INTSTS1); + r8a66597_write(r8a66597, ~SACK, INTSTS1); check_next_phase(r8a66597); } } @@ -1663,13 +1665,9 @@ static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb) static int r8a66597_start(struct usb_hcd *hcd) { struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd); - int ret; hcd->state = HC_STATE_RUNNING; - if ((ret = enable_controller(r8a66597)) < 0) - return ret; - - return 0; + return enable_controller(r8a66597); } static void r8a66597_stop(struct usb_hcd *hcd) @@ -1696,13 +1694,12 @@ static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb) static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597, struct urb *urb, - struct usb_host_endpoint *hep, - gfp_t mem_flags) + struct usb_host_endpoint *hep) { struct r8a66597_td *td; u16 pipenum; - td = kzalloc(sizeof(struct r8a66597_td), mem_flags); + td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC); if (td == NULL) return NULL; @@ -1741,7 +1738,8 @@ static int r8a66597_urb_enqueue(struct usb_hcd *hcd, } if (!hep->hcpriv) { - hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), mem_flags); + hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), + GFP_ATOMIC); if (!hep->hcpriv) { ret = -ENOMEM; goto error; @@ -1755,7 +1753,7 @@ static int r8a66597_urb_enqueue(struct usb_hcd *hcd, init_pipe_config(r8a66597, urb); set_address_zero(r8a66597, urb); - td = r8a66597_make_td(r8a66597, urb, hep, mem_flags); + td = r8a66597_make_td(r8a66597, urb, hep); if (td == NULL) { ret = -ENOMEM; goto error; diff --git a/drivers/usb/host/r8a66597.h b/drivers/usb/host/r8a66597.h index 97c2a71ac7a..fe9ceb077d9 100644 --- a/drivers/usb/host/r8a66597.h +++ b/drivers/usb/host/r8a66597.h @@ -203,14 +203,14 @@ #define DTLN 0x0FFF /* b11-0: FIFO received data length */ /* Interrupt Enable Register 0 */ -#define VBSE 0x8000 /* b15: VBUS interrupt */ -#define RSME 0x4000 /* b14: Resume interrupt */ -#define SOFE 0x2000 /* b13: Frame update interrupt */ -#define DVSE 0x1000 /* b12: Device state transition interrupt */ -#define CTRE 0x0800 /* b11: Control transfer stage transition interrupt */ -#define BEMPE 0x0400 /* b10: Buffer empty interrupt */ -#define NRDYE 0x0200 /* b9: Buffer not ready interrupt */ -#define BRDYE 0x0100 /* b8: Buffer ready interrupt */ +#define VBSE 0x8000 /* b15: VBUS interrupt */ +#define RSME 0x4000 /* b14: Resume interrupt */ +#define SOFE 0x2000 /* b13: Frame update interrupt */ +#define DVSE 0x1000 /* b12: Device state transition interrupt */ +#define CTRE 0x0800 /* b11: Control transfer stage transition interrupt */ +#define BEMPE 0x0400 /* b10: Buffer empty interrupt */ +#define NRDYE 0x0200 /* b9: Buffer not ready interrupt */ +#define BRDYE 0x0100 /* b8: Buffer ready interrupt */ /* Interrupt Enable Register 1 */ #define OVRCRE 0x8000 /* b15: Over-current interrupt */ @@ -268,16 +268,16 @@ #define SOF_DISABLE 0x0000 /* SOF OUT Disable */ /* Interrupt Status Register 0 */ -#define VBINT 0x8000 /* b15: VBUS interrupt */ -#define RESM 0x4000 /* b14: Resume interrupt */ -#define SOFR 0x2000 /* b13: SOF frame update interrupt */ -#define DVST 0x1000 /* b12: Device state transition interrupt */ -#define CTRT 0x0800 /* b11: Control transfer stage transition interrupt */ -#define BEMP 0x0400 /* b10: Buffer empty interrupt */ -#define NRDY 0x0200 /* b9: Buffer not ready interrupt */ -#define BRDY 0x0100 /* b8: Buffer ready interrupt */ -#define VBSTS 0x0080 /* b7: VBUS input port */ -#define DVSQ 0x0070 /* b6-4: Device state */ +#define VBINT 0x8000 /* b15: VBUS interrupt */ +#define RESM 0x4000 /* b14: Resume interrupt */ +#define SOFR 0x2000 /* b13: SOF frame update interrupt */ +#define DVST 0x1000 /* b12: Device state transition interrupt */ +#define CTRT 0x0800 /* b11: Control transfer stage transition interrupt */ +#define BEMP 0x0400 /* b10: Buffer empty interrupt */ +#define NRDY 0x0200 /* b9: Buffer not ready interrupt */ +#define BRDY 0x0100 /* b8: Buffer ready interrupt */ +#define VBSTS 0x0080 /* b7: VBUS input port */ +#define DVSQ 0x0070 /* b6-4: Device state */ #define DS_SPD_CNFG 0x0070 /* Suspend Configured */ #define DS_SPD_ADDR 0x0060 /* Suspend Address */ #define DS_SPD_DFLT 0x0050 /* Suspend Default */ @@ -315,13 +315,10 @@ /* Micro Frame Number Register */ #define UFRNM 0x0007 /* b2-0: Micro frame number */ -/* USB Address / Low Power Status Recovery Register */ -//#define USBADDR 0x007F /* b6-0: USB address */ - /* Default Control Pipe Maxpacket Size Register */ /* Pipe Maxpacket Size Register */ -#define DEVSEL 0xF000 /* b15-14: Device address select */ -#define MAXP 0x007F /* b6-0: Maxpacket size of default control pipe */ +#define DEVSEL 0xF000 /* b15-14: Device address select */ +#define MAXP 0x007F /* b6-0: Maxpacket size of default control pipe */ /* Default Control Pipe Control Register */ #define BSTS 0x8000 /* b15: Buffer status */ @@ -366,21 +363,21 @@ #define MXPS 0x07FF /* b10-0: Maxpacket size */ /* Pipe Cycle Configuration Register */ -#define IFIS 0x1000 /* b12: Isochronous in-buffer flush mode select */ -#define IITV 0x0007 /* b2-0: Isochronous interval */ +#define IFIS 0x1000 /* b12: Isochronous in-buffer flush mode select */ +#define IITV 0x0007 /* b2-0: Isochronous interval */ /* Pipex Control Register */ -#define BSTS 0x8000 /* b15: Buffer status */ -#define INBUFM 0x4000 /* b14: IN buffer monitor (Only for PIPE1 to 5) */ -#define CSCLR 0x2000 /* b13: complete-split status clear */ -#define CSSTS 0x1000 /* b12: complete-split status */ -#define ATREPM 0x0400 /* b10: Auto repeat mode */ -#define ACLRM 0x0200 /* b9: Out buffer auto clear mode */ -#define SQCLR 0x0100 /* b8: Sequence toggle bit clear */ -#define SQSET 0x0080 /* b7: Sequence toggle bit set */ -#define SQMON 0x0040 /* b6: Sequence toggle bit monitor */ -#define PBUSY 0x0020 /* b5: pipe busy */ -#define PID 0x0003 /* b1-0: Response PID */ +#define BSTS 0x8000 /* b15: Buffer status */ +#define INBUFM 0x4000 /* b14: IN buffer monitor (Only for PIPE1 to 5) */ +#define CSCLR 0x2000 /* b13: complete-split status clear */ +#define CSSTS 0x1000 /* b12: complete-split status */ +#define ATREPM 0x0400 /* b10: Auto repeat mode */ +#define ACLRM 0x0200 /* b9: Out buffer auto clear mode */ +#define SQCLR 0x0100 /* b8: Sequence toggle bit clear */ +#define SQSET 0x0080 /* b7: Sequence toggle bit set */ +#define SQMON 0x0040 /* b6: Sequence toggle bit monitor */ +#define PBUSY 0x0020 /* b5: pipe busy */ +#define PID 0x0003 /* b1-0: Response PID */ /* PIPExTRE */ #define TRENB 0x0200 /* b9: Transaction counter enable */ @@ -407,15 +404,15 @@ #define make_devsel(addr) (addr << 12) struct r8a66597_pipe_info { - u16 pipenum; - u16 address; /* R8A66597 HCD usb addres */ - u16 epnum; - u16 maxpacket; - u16 type; - u16 bufnum; - u16 buf_bsize; - u16 interval; - u16 dir_in; + u16 pipenum; + u16 address; /* R8A66597 HCD usb addres */ + u16 epnum; + u16 maxpacket; + u16 type; + u16 bufnum; + u16 buf_bsize; + u16 interval; + u16 dir_in; }; struct r8a66597_pipe { -- cgit v1.2.3-70-g09d2