| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| David Brownell | 887 | 64.09% | 6 | 26.09% |
| Ricardo Ribalda Delgado | 434 | 31.36% | 8 | 34.78% |
| Simon Appleby | 35 | 2.53% | 1 | 4.35% |
| Al Viro | 10 | 0.72% | 1 | 4.35% |
| Alan Stern | 8 | 0.58% | 2 | 8.70% |
| Tim Harvey | 4 | 0.29% | 1 | 4.35% |
| Pete Zaitcev | 3 | 0.22% | 1 | 4.35% |
| Greg Kroah-Hartman | 2 | 0.14% | 2 | 8.70% |
| Romain Perier | 1 | 0.07% | 1 | 4.35% |
| Total | 1384 | 23 |
// SPDX-License-Identifier: GPL-2.0+ /* * NetChip 2280 high/full speed USB device controller. * Unlike many such controllers, this one talks PCI. */ /* * Copyright (C) 2002 NetChip Technology, Inc. (http://www.netchip.com) * Copyright (C) 2003 David Brownell * Copyright (C) 2014 Ricardo Ribalda - Qtechnology/AS */ #include <linux/usb/net2280.h> #include <linux/usb/usb338x.h> /*-------------------------------------------------------------------------*/ #ifdef __KERNEL__ /* indexed registers [11.10] are accessed indirectly * caller must own the device lock. */ static inline u32 get_idx_reg(struct net2280_regs __iomem *regs, u32 index) { writel(index, ®s->idxaddr); /* NOTE: synchs device/cpu memory views */ return readl(®s->idxdata); } static inline void set_idx_reg(struct net2280_regs __iomem *regs, u32 index, u32 value) { writel(index, ®s->idxaddr); writel(value, ®s->idxdata); /* posted, may not be visible yet */ } #endif /* __KERNEL__ */ #define PCI_VENDOR_ID_PLX_LEGACY 0x17cc #define PLX_LEGACY BIT(0) #define PLX_2280 BIT(1) #define PLX_SUPERSPEED BIT(2) #define PLX_PCIE BIT(3) #define REG_DIAG 0x0 #define RETRY_COUNTER 16 #define FORCE_PCI_SERR 11 #define FORCE_PCI_INTERRUPT 10 #define FORCE_USB_INTERRUPT 9 #define FORCE_CPU_INTERRUPT 8 #define ILLEGAL_BYTE_ENABLES 5 #define FAST_TIMES 4 #define FORCE_RECEIVE_ERROR 2 #define FORCE_TRANSMIT_CRC_ERROR 0 #define REG_FRAME 0x02 /* from last sof */ #define REG_CHIPREV 0x03 /* in bcd */ #define REG_HS_NAK_RATE 0x0a /* NAK per N uframes */ #define CHIPREV_1 0x0100 #define CHIPREV_1A 0x0110 /* DEFECT 7374 */ #define DEFECT_7374_NUMBEROF_MAX_WAIT_LOOPS 200 #define DEFECT_7374_PROCESSOR_WAIT_TIME 10 /* ep0 max packet size */ #define EP0_SS_MAX_PACKET_SIZE 0x200 #define EP0_HS_MAX_PACKET_SIZE 0x40 #ifdef __KERNEL__ /*-------------------------------------------------------------------------*/ /* [8.3] for scatter/gather i/o * use struct net2280_dma_regs bitfields */ struct net2280_dma { __le32 dmacount; __le32 dmaaddr; /* the buffer */ __le32 dmadesc; /* next dma descriptor */ __le32 _reserved; } __aligned(16); /*-------------------------------------------------------------------------*/ /* DRIVER DATA STRUCTURES and UTILITIES */ struct net2280_ep { struct usb_ep ep; struct net2280_ep_regs __iomem *cfg; struct net2280_ep_regs __iomem *regs; struct net2280_dma_regs __iomem *dma; struct net2280_dma *dummy; dma_addr_t td_dma; /* of dummy */ struct net2280 *dev; unsigned long irqs; /* analogous to a host-side qh */ struct list_head queue; const struct usb_endpoint_descriptor *desc; unsigned num : 8, fifo_size : 12, in_fifo_validate : 1, out_overflow : 1, stopped : 1, wedged : 1, is_in : 1, is_iso : 1, responded : 1; }; static inline void allow_status(struct net2280_ep *ep) { /* ep0 only */ writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) | BIT(CLEAR_NAK_OUT_PACKETS) | BIT(CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp); ep->stopped = 1; } static inline void allow_status_338x(struct net2280_ep *ep) { /* * Control Status Phase Handshake was set by the chip when the setup * packet arrived. While set, the chip automatically NAKs the host's * Status Phase tokens. */ writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE), &ep->regs->ep_rsp); ep->stopped = 1; /* TD 9.9 Halt Endpoint test. TD 9.22 set feature test. */ ep->responded = 0; } struct net2280_request { struct usb_request req; struct net2280_dma *td; dma_addr_t td_dma; struct list_head queue; unsigned mapped : 1, valid : 1; }; struct net2280 { /* each pci device provides one gadget, several endpoints */ struct usb_gadget gadget; spinlock_t lock; struct net2280_ep ep[9]; struct usb_gadget_driver *driver; unsigned enabled : 1, protocol_stall : 1, softconnect : 1, got_irq : 1, region:1, u1_enable:1, u2_enable:1, ltm_enable:1, wakeup_enable:1, addressed_state:1, bug7734_patched:1; u16 chiprev; int enhanced_mode; int n_ep; kernel_ulong_t quirks; /* pci state used to access those endpoints */ struct pci_dev *pdev; struct net2280_regs __iomem *regs; struct net2280_usb_regs __iomem *usb; struct usb338x_usb_ext_regs __iomem *usb_ext; struct net2280_pci_regs __iomem *pci; struct net2280_dma_regs __iomem *dma; struct net2280_dep_regs __iomem *dep; struct net2280_ep_regs __iomem *epregs; struct usb338x_ll_regs __iomem *llregs; struct usb338x_pl_regs __iomem *plregs; struct dma_pool *requests; /* statistics...*/ }; static inline void set_halt(struct net2280_ep *ep) { /* ep0 and bulk/intr endpoints */ writel(BIT(CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE) | /* set NAK_OUT for erratum 0114 */ ((ep->dev->chiprev == CHIPREV_1) << SET_NAK_OUT_PACKETS) | BIT(SET_ENDPOINT_HALT), &ep->regs->ep_rsp); } static inline void clear_halt(struct net2280_ep *ep) { /* ep0 and bulk/intr endpoints */ writel(BIT(CLEAR_ENDPOINT_HALT) | BIT(CLEAR_ENDPOINT_TOGGLE) | /* * unless the gadget driver left a short packet in the * fifo, this reverses the erratum 0114 workaround. */ ((ep->dev->chiprev == CHIPREV_1) << CLEAR_NAK_OUT_PACKETS), &ep->regs->ep_rsp); } /* * FSM value for Defect 7374 (U1U2 Test) is managed in * chip's SCRATCH register: */ #define DEFECT7374_FSM_FIELD 28 /* Waiting for Control Read: * - A transition to this state indicates a fresh USB connection, * before the first Setup Packet. The connection speed is not * known. Firmware is waiting for the first Control Read. * - Starting state: This state can be thought of as the FSM's typical * starting state. * - Tip: Upon the first SS Control Read the FSM never * returns to this state. */ #define DEFECT7374_FSM_WAITING_FOR_CONTROL_READ BIT(DEFECT7374_FSM_FIELD) /* Non-SS Control Read: * - A transition to this state indicates detection of the first HS * or FS Control Read. * - Tip: Upon the first SS Control Read the FSM never * returns to this state. */ #define DEFECT7374_FSM_NON_SS_CONTROL_READ (2 << DEFECT7374_FSM_FIELD) /* SS Control Read: * - A transition to this state indicates detection of the * first SS Control Read. * - This state indicates workaround completion. Workarounds no longer * need to be applied (as long as the chip remains powered up). * - Tip: Once in this state the FSM state does not change (until * the chip's power is lost and restored). * - This can be thought of as the final state of the FSM; * the FSM 'locks-up' in this state until the chip loses power. */ #define DEFECT7374_FSM_SS_CONTROL_READ (3 << DEFECT7374_FSM_FIELD) #ifdef USE_RDK_LEDS static inline void net2280_led_init(struct net2280 *dev) { /* LED3 (green) is on during USB activity. note erratum 0113. */ writel(BIT(GPIO3_LED_SELECT) | BIT(GPIO3_OUTPUT_ENABLE) | BIT(GPIO2_OUTPUT_ENABLE) | BIT(GPIO1_OUTPUT_ENABLE) | BIT(GPIO0_OUTPUT_ENABLE), &dev->regs->gpioctl); } /* indicate speed with bi-color LED 0/1 */ static inline void net2280_led_speed(struct net2280 *dev, enum usb_device_speed speed) { u32 val = readl(&dev->regs->gpioctl); switch (speed) { case USB_SPEED_SUPER: /* green + red */ val |= BIT(GPIO0_DATA) | BIT(GPIO1_DATA); break; case USB_SPEED_HIGH: /* green */ val &= ~BIT(GPIO0_DATA); val |= BIT(GPIO1_DATA); break; case USB_SPEED_FULL: /* red */ val &= ~BIT(GPIO1_DATA); val |= BIT(GPIO0_DATA); break; default: /* (off/black) */ val &= ~(BIT(GPIO1_DATA) | BIT(GPIO0_DATA)); break; } writel(val, &dev->regs->gpioctl); } /* indicate power with LED 2 */ static inline void net2280_led_active(struct net2280 *dev, int is_active) { u32 val = readl(&dev->regs->gpioctl); /* FIXME this LED never seems to turn on.*/ if (is_active) val |= GPIO2_DATA; else val &= ~GPIO2_DATA; writel(val, &dev->regs->gpioctl); } static inline void net2280_led_shutdown(struct net2280 *dev) { /* turn off all four GPIO*_DATA bits */ writel(readl(&dev->regs->gpioctl) & ~0x0f, &dev->regs->gpioctl); } #else #define net2280_led_init(dev) do { } while (0) #define net2280_led_speed(dev, speed) do { } while (0) #define net2280_led_shutdown(dev) do { } while (0) #endif /*-------------------------------------------------------------------------*/ #define ep_dbg(ndev, fmt, args...) \ dev_dbg((&((ndev)->pdev->dev)), fmt, ##args) #define ep_vdbg(ndev, fmt, args...) \ dev_vdbg((&((ndev)->pdev->dev)), fmt, ##args) #define ep_info(ndev, fmt, args...) \ dev_info((&((ndev)->pdev->dev)), fmt, ##args) #define ep_warn(ndev, fmt, args...) \ dev_warn((&((ndev)->pdev->dev)), fmt, ##args) #define ep_err(ndev, fmt, args...) \ dev_err((&((ndev)->pdev->dev)), fmt, ##args) /*-------------------------------------------------------------------------*/ static inline void set_fifo_bytecount(struct net2280_ep *ep, unsigned count) { if (ep->dev->pdev->vendor == 0x17cc) writeb(count, 2 + (u8 __iomem *) &ep->regs->ep_cfg); else{ u32 tmp = readl(&ep->cfg->ep_cfg) & (~(0x07 << EP_FIFO_BYTE_COUNT)); writel(tmp | (count << EP_FIFO_BYTE_COUNT), &ep->cfg->ep_cfg); } } static inline void start_out_naking(struct net2280_ep *ep) { /* NOTE: hardware races lurk here, and PING protocol issues */ writel(BIT(SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp); /* synch with device */ readl(&ep->regs->ep_rsp); } static inline void stop_out_naking(struct net2280_ep *ep) { u32 tmp; tmp = readl(&ep->regs->ep_stat); if ((tmp & BIT(NAK_OUT_PACKETS)) != 0) writel(BIT(CLEAR_NAK_OUT_PACKETS), &ep->regs->ep_rsp); } static inline void set_max_speed(struct net2280_ep *ep, u32 max) { u32 reg; static const u32 ep_enhanced[9] = { 0x10, 0x60, 0x30, 0x80, 0x50, 0x20, 0x70, 0x40, 0x90 }; if (ep->dev->enhanced_mode) { reg = ep_enhanced[ep->num]; switch (ep->dev->gadget.speed) { case USB_SPEED_SUPER: reg += 2; break; case USB_SPEED_FULL: reg += 1; break; case USB_SPEED_HIGH: default: break; } } else { reg = (ep->num + 1) * 0x10; if (ep->dev->gadget.speed != USB_SPEED_HIGH) reg += 1; } set_idx_reg(ep->dev->regs, reg, max); } #endif /* __KERNEL__ */
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