| Message ID | 20200123074956.21482-2-rentao.bupt@gmail.com |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | aspeed-g6: enable usb support | expand |
On Thu, 23 Jan 2020, at 18:19, rentao.bupt@gmail.com wrote: > From: Tao Ren <rentao.bupt@gmail.com> > > The patch moves hardcoded vhub attributes (maximum downstream ports and > generic endpoints) to "ast_vhub_config" structure which is attached to > struct of_device_id. By doing this, it will be very straightforward to > enable support of AST2600 vhub which has different number of downstream > ports and endpoints. > > Signed-off-by: Tao Ren <rentao.bupt@gmail.com> > --- > Changes in v2: > - this is the first version. It's given v2 to align with the version > of patch series. > > > drivers/usb/gadget/udc/aspeed-vhub/core.c | 100 ++++++++++++++-------- > drivers/usb/gadget/udc/aspeed-vhub/dev.c | 30 +++++-- > drivers/usb/gadget/udc/aspeed-vhub/epn.c | 4 +- > drivers/usb/gadget/udc/aspeed-vhub/hub.c | 22 +++-- > drivers/usb/gadget/udc/aspeed-vhub/vhub.h | 21 ++--- > 5 files changed, 107 insertions(+), 70 deletions(-) > > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/core.c > b/drivers/usb/gadget/udc/aspeed-vhub/core.c > index 90b134d5dca9..9efbfdffad30 100644 > --- a/drivers/usb/gadget/udc/aspeed-vhub/core.c > +++ b/drivers/usb/gadget/udc/aspeed-vhub/core.c > @@ -32,6 +32,29 @@ > > #include "vhub.h" > > +struct ast_vhub_config { > + u32 max_ports; /* max number of downstream ports */ > + u32 max_epns; /* max number of generic endpoints */ > +}; > + > +static const struct ast_vhub_config ast2400_config = { > + .max_ports = 5, > + .max_epns = 15, > +}; > + > +static const struct of_device_id ast_vhub_dt_ids[] = { > + { > + .compatible = "aspeed,ast2400-usb-vhub", > + .data = &ast2400_config, > + }, > + { > + .compatible = "aspeed,ast2500-usb-vhub", > + .data = &ast2400_config, > + }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, ast_vhub_dt_ids); > + Is there a reason to move the table from where it was? It's not a problem, just makes the diff a bit noisier. > void ast_vhub_done(struct ast_vhub_ep *ep, struct ast_vhub_req *req, > int status) > { > @@ -99,7 +122,7 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) > { > struct ast_vhub *vhub = data; > irqreturn_t iret = IRQ_NONE; > - u32 istat; > + u32 i, istat; > > /* Stale interrupt while tearing down */ > if (!vhub->ep0_bufs) > @@ -121,10 +144,10 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) > > /* Handle generic EPs first */ > if (istat & VHUB_IRQ_EP_POOL_ACK_STALL) { > - u32 i, ep_acks = readl(vhub->regs + AST_VHUB_EP_ACK_ISR); > + u32 ep_acks = readl(vhub->regs + AST_VHUB_EP_ACK_ISR); > writel(ep_acks, vhub->regs + AST_VHUB_EP_ACK_ISR); > > - for (i = 0; ep_acks && i < AST_VHUB_NUM_GEN_EPs; i++) { > + for (i = 0; ep_acks && i < vhub->max_epns; i++) { > u32 mask = VHUB_EP_IRQ(i); > if (ep_acks & mask) { > ast_vhub_epn_ack_irq(&vhub->epns[i]); > @@ -134,21 +157,11 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) > } > > /* Handle device interrupts */ > - if (istat & (VHUB_IRQ_DEVICE1 | > - VHUB_IRQ_DEVICE2 | > - VHUB_IRQ_DEVICE3 | > - VHUB_IRQ_DEVICE4 | > - VHUB_IRQ_DEVICE5)) { > - if (istat & VHUB_IRQ_DEVICE1) > - ast_vhub_dev_irq(&vhub->ports[0].dev); > - if (istat & VHUB_IRQ_DEVICE2) > - ast_vhub_dev_irq(&vhub->ports[1].dev); > - if (istat & VHUB_IRQ_DEVICE3) > - ast_vhub_dev_irq(&vhub->ports[2].dev); > - if (istat & VHUB_IRQ_DEVICE4) > - ast_vhub_dev_irq(&vhub->ports[3].dev); > - if (istat & VHUB_IRQ_DEVICE5) > - ast_vhub_dev_irq(&vhub->ports[4].dev); > + for (i = 0; i < vhub->max_ports; i++) { > + u32 dev_mask = VHUB_IRQ_DEVICE1 << i; > + > + if (istat & dev_mask) > + ast_vhub_dev_irq(&vhub->ports[i].dev); > } > > /* Handle top-level vHub EP0 interrupts */ > @@ -182,7 +195,7 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) > > void ast_vhub_init_hw(struct ast_vhub *vhub) > { > - u32 ctrl; > + u32 ctrl, port_mask, epn_mask; > > UDCDBG(vhub,"(Re)Starting HW ...\n"); > > @@ -222,15 +235,20 @@ void ast_vhub_init_hw(struct ast_vhub *vhub) > } > > /* Reset all devices */ > - writel(VHUB_SW_RESET_ALL, vhub->regs + AST_VHUB_SW_RESET); > + port_mask = GENMASK(vhub->max_ports, 1); > + writel(VHUB_SW_RESET_ROOT_HUB | > + VHUB_SW_RESET_DMA_CONTROLLER | > + VHUB_SW_RESET_EP_POOL | > + port_mask, vhub->regs + AST_VHUB_SW_RESET); > udelay(1); > writel(0, vhub->regs + AST_VHUB_SW_RESET); > > /* Disable and cleanup EP ACK/NACK interrupts */ > + epn_mask = GENMASK(vhub->max_epns - 1, 0); > writel(0, vhub->regs + AST_VHUB_EP_ACK_IER); > writel(0, vhub->regs + AST_VHUB_EP_NACK_IER); > - writel(VHUB_EP_IRQ_ALL, vhub->regs + AST_VHUB_EP_ACK_ISR); > - writel(VHUB_EP_IRQ_ALL, vhub->regs + AST_VHUB_EP_NACK_ISR); > + writel(epn_mask, vhub->regs + AST_VHUB_EP_ACK_ISR); > + writel(epn_mask, vhub->regs + AST_VHUB_EP_NACK_ISR); > > /* Default settings for EP0, enable HW hub EP1 */ > writel(0, vhub->regs + AST_VHUB_EP0_CTRL); > @@ -273,7 +291,7 @@ static int ast_vhub_remove(struct platform_device *pdev) > return 0; > > /* Remove devices */ > - for (i = 0; i < AST_VHUB_NUM_PORTS; i++) > + for (i = 0; i < vhub->max_ports; i++) > ast_vhub_del_dev(&vhub->ports[i].dev); > > spin_lock_irqsave(&vhub->lock, flags); > @@ -295,7 +313,7 @@ static int ast_vhub_remove(struct platform_device *pdev) > if (vhub->ep0_bufs) > dma_free_coherent(&pdev->dev, > AST_VHUB_EP0_MAX_PACKET * > - (AST_VHUB_NUM_PORTS + 1), > + (vhub->max_ports + 1), > vhub->ep0_bufs, > vhub->ep0_bufs_dma); > vhub->ep0_bufs = NULL; > @@ -309,11 +327,30 @@ static int ast_vhub_probe(struct platform_device *pdev) > struct ast_vhub *vhub; > struct resource *res; > int i, rc = 0; > + const struct of_device_id *ofdid; > + struct ast_vhub_config *config; > > vhub = devm_kzalloc(&pdev->dev, sizeof(*vhub), GFP_KERNEL); > if (!vhub) > return -ENOMEM; > > + ofdid = of_match_node(ast_vhub_dt_ids, pdev->dev.of_node); > + if (!ofdid) > + return -EINVAL; > + config = ofdid->data; > + > + vhub->max_ports = config->max_ports; > + vhub->ports = devm_kcalloc(&pdev->dev, vhub->max_ports, > + sizeof(*vhub->ports), GFP_KERNEL); > + if (!vhub->ports) > + return -ENOMEM; > + > + vhub->max_epns = config->max_epns; > + vhub->epns = devm_kcalloc(&pdev->dev, vhub->max_epns, > + sizeof(*vhub->epns), GFP_KERNEL); > + if (!vhub->epns) > + return -ENOMEM; > + > spin_lock_init(&vhub->lock); > vhub->pdev = pdev; > > @@ -366,7 +403,7 @@ static int ast_vhub_probe(struct platform_device *pdev) > */ > vhub->ep0_bufs = dma_alloc_coherent(&pdev->dev, > AST_VHUB_EP0_MAX_PACKET * > - (AST_VHUB_NUM_PORTS + 1), > + (vhub->max_ports + 1), > &vhub->ep0_bufs_dma, GFP_KERNEL); > if (!vhub->ep0_bufs) { > dev_err(&pdev->dev, "Failed to allocate EP0 DMA buffers\n"); > @@ -380,7 +417,7 @@ static int ast_vhub_probe(struct platform_device *pdev) > ast_vhub_init_ep0(vhub, &vhub->ep0, NULL); > > /* Init devices */ > - for (i = 0; i < AST_VHUB_NUM_PORTS && rc == 0; i++) > + for (i = 0; i < vhub->max_ports && rc == 0; i++) > rc = ast_vhub_init_dev(vhub, i); > if (rc) > goto err; > @@ -400,17 +437,6 @@ static int ast_vhub_probe(struct platform_device *pdev) > return rc; > } > > -static const struct of_device_id ast_vhub_dt_ids[] = { > - { > - .compatible = "aspeed,ast2400-usb-vhub", > - }, > - { > - .compatible = "aspeed,ast2500-usb-vhub", > - }, > - { } > -}; > -MODULE_DEVICE_TABLE(of, ast_vhub_dt_ids); > - > static struct platform_driver ast_vhub_driver = { > .probe = ast_vhub_probe, > .remove = ast_vhub_remove, > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/dev.c > b/drivers/usb/gadget/udc/aspeed-vhub/dev.c > index 4008e7a51188..f9b762951121 100644 > --- a/drivers/usb/gadget/udc/aspeed-vhub/dev.c > +++ b/drivers/usb/gadget/udc/aspeed-vhub/dev.c > @@ -77,7 +77,7 @@ static void ast_vhub_dev_enable(struct ast_vhub_dev > *d) > writel(d->ep0.buf_dma, d->regs + AST_VHUB_DEV_EP0_DATA); > > /* Clear stall on all EPs */ > - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) { > + for (i = 0; i < d->max_epns; i++) { > struct ast_vhub_ep *ep = d->epns[i]; > > if (ep && (ep->epn.stalled || ep->epn.wedged)) { > @@ -137,7 +137,7 @@ static int ast_vhub_ep_feature(struct ast_vhub_dev *d, > is_set ? "SET" : "CLEAR", ep_num, wValue); > if (ep_num == 0) > return std_req_complete; > - if (ep_num >= AST_VHUB_NUM_GEN_EPs || !d->epns[ep_num - 1]) > + if (ep_num >= d->max_epns || !d->epns[ep_num - 1]) > return std_req_stall; > if (wValue != USB_ENDPOINT_HALT) > return std_req_driver; > @@ -181,7 +181,7 @@ static int ast_vhub_ep_status(struct ast_vhub_dev *d, > > DDBG(d, "GET_STATUS(ep%d)\n", ep_num); > > - if (ep_num >= AST_VHUB_NUM_GEN_EPs) > + if (ep_num >= d->max_epns) > return std_req_stall; > if (ep_num != 0) { > ep = d->epns[ep_num - 1]; > @@ -299,7 +299,7 @@ static void ast_vhub_dev_nuke(struct ast_vhub_dev *d) > { > unsigned int i; > > - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) { > + for (i = 0; i < d->max_epns; i++) { > if (!d->epns[i]) > continue; > ast_vhub_nuke(d->epns[i], -ESHUTDOWN); > @@ -416,10 +416,10 @@ static struct usb_ep > *ast_vhub_udc_match_ep(struct usb_gadget *gadget, > * that will allow the generic code to use our > * assigned address. > */ > - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) > + for (i = 0; i < d->max_epns; i++) > if (d->epns[i] == NULL) > break; > - if (i >= AST_VHUB_NUM_GEN_EPs) > + if (i >= d->max_epns) > return NULL; > addr = i + 1; > > @@ -526,6 +526,7 @@ void ast_vhub_del_dev(struct ast_vhub_dev *d) > > usb_del_gadget_udc(&d->gadget); > device_unregister(d->port_dev); > + kfree(d->epns); > } > > static void ast_vhub_dev_release(struct device *dev) > @@ -546,14 +547,25 @@ int ast_vhub_init_dev(struct ast_vhub *vhub, > unsigned int idx) > > ast_vhub_init_ep0(vhub, &d->ep0, d); > > + /* > + * A USB device can have up to 30 endpoints besides control > + * endpoint 0. > + */ > + d->max_epns = min(vhub->max_epns, 30); > + d->epns = kcalloc(d->max_epns, sizeof(*d->epns), GFP_KERNEL); > + if (!d->epns) > + return -ENOMEM; > + > /* > * The UDC core really needs us to have separate and uniquely > * named "parent" devices for each port so we create a sub device > * here for that purpose > */ > d->port_dev = kzalloc(sizeof(struct device), GFP_KERNEL); > - if (!d->port_dev) > - return -ENOMEM; > + if (!d->port_dev) { > + rc = -ENOMEM; > + goto fail_alloc; > + } > device_initialize(d->port_dev); > d->port_dev->release = ast_vhub_dev_release; > d->port_dev->parent = parent; > @@ -584,6 +596,8 @@ int ast_vhub_init_dev(struct ast_vhub *vhub, > unsigned int idx) > device_del(d->port_dev); > fail_add: > put_device(d->port_dev); > + fail_alloc: > + kfree(d->epns); > > return rc; > } > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/epn.c > b/drivers/usb/gadget/udc/aspeed-vhub/epn.c > index 7475c74aa5c5..0bd6b20435b8 100644 > --- a/drivers/usb/gadget/udc/aspeed-vhub/epn.c > +++ b/drivers/usb/gadget/udc/aspeed-vhub/epn.c > @@ -800,10 +800,10 @@ struct ast_vhub_ep *ast_vhub_alloc_epn(struct > ast_vhub_dev *d, u8 addr) > > /* Find a free one (no device) */ > spin_lock_irqsave(&vhub->lock, flags); > - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) > + for (i = 0; i < vhub->max_epns; i++) > if (vhub->epns[i].dev == NULL) > break; > - if (i >= AST_VHUB_NUM_GEN_EPs) { > + if (i >= vhub->max_epns) { > spin_unlock_irqrestore(&vhub->lock, flags); > return NULL; > } > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c > b/drivers/usb/gadget/udc/aspeed-vhub/hub.c > index 19b3517e04c0..aa1c127e9f2f 100644 > --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c > +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c > @@ -133,10 +133,9 @@ static const struct ast_vhub_full_cdesc { > > #define AST_VHUB_HUB_DESC_SIZE (USB_DT_HUB_NONVAR_SIZE + 2) > > -static const struct usb_hub_descriptor ast_vhub_hub_desc = { > +static struct usb_hub_descriptor ast_vhub_hub_desc = { This seems unfortunate, though we only have one on the SoC... is it worth dynamically allocating it? Or adding a comment? Andrew
On Fri, Jan 24, 2020 at 10:39:45AM +1030, Andrew Jeffery wrote: > > > On Thu, 23 Jan 2020, at 18:19, rentao.bupt@gmail.com wrote: > > From: Tao Ren <rentao.bupt@gmail.com> > > > > The patch moves hardcoded vhub attributes (maximum downstream ports and > > generic endpoints) to "ast_vhub_config" structure which is attached to > > struct of_device_id. By doing this, it will be very straightforward to > > enable support of AST2600 vhub which has different number of downstream > > ports and endpoints. > > > > Signed-off-by: Tao Ren <rentao.bupt@gmail.com> > > --- > > Changes in v2: > > - this is the first version. It's given v2 to align with the version > > of patch series. > > > > > > drivers/usb/gadget/udc/aspeed-vhub/core.c | 100 ++++++++++++++-------- > > drivers/usb/gadget/udc/aspeed-vhub/dev.c | 30 +++++-- > > drivers/usb/gadget/udc/aspeed-vhub/epn.c | 4 +- > > drivers/usb/gadget/udc/aspeed-vhub/hub.c | 22 +++-- > > drivers/usb/gadget/udc/aspeed-vhub/vhub.h | 21 ++--- > > 5 files changed, 107 insertions(+), 70 deletions(-) > > > > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/core.c > > b/drivers/usb/gadget/udc/aspeed-vhub/core.c > > index 90b134d5dca9..9efbfdffad30 100644 > > --- a/drivers/usb/gadget/udc/aspeed-vhub/core.c > > +++ b/drivers/usb/gadget/udc/aspeed-vhub/core.c > > @@ -32,6 +32,29 @@ > > > > #include "vhub.h" > > > > +struct ast_vhub_config { > > + u32 max_ports; /* max number of downstream ports */ > > + u32 max_epns; /* max number of generic endpoints */ > > +}; > > + > > +static const struct ast_vhub_config ast2400_config = { > > + .max_ports = 5, > > + .max_epns = 15, > > +}; > > + > > +static const struct of_device_id ast_vhub_dt_ids[] = { > > + { > > + .compatible = "aspeed,ast2400-usb-vhub", > > + .data = &ast2400_config, > > + }, > > + { > > + .compatible = "aspeed,ast2500-usb-vhub", > > + .data = &ast2400_config, > > + }, > > + { } > > +}; > > +MODULE_DEVICE_TABLE(of, ast_vhub_dt_ids); > > + > > Is there a reason to move the table from where it was? It's not a problem, > just makes the diff a bit noisier. I move the table before ast_vhub_probe() because it is referenced in the function. > > > void ast_vhub_done(struct ast_vhub_ep *ep, struct ast_vhub_req *req, > > int status) > > { > > @@ -99,7 +122,7 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) > > { > > struct ast_vhub *vhub = data; > > irqreturn_t iret = IRQ_NONE; > > - u32 istat; > > + u32 i, istat; > > > > /* Stale interrupt while tearing down */ > > if (!vhub->ep0_bufs) > > @@ -121,10 +144,10 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) > > > > /* Handle generic EPs first */ > > if (istat & VHUB_IRQ_EP_POOL_ACK_STALL) { > > - u32 i, ep_acks = readl(vhub->regs + AST_VHUB_EP_ACK_ISR); > > + u32 ep_acks = readl(vhub->regs + AST_VHUB_EP_ACK_ISR); > > writel(ep_acks, vhub->regs + AST_VHUB_EP_ACK_ISR); > > > > - for (i = 0; ep_acks && i < AST_VHUB_NUM_GEN_EPs; i++) { > > + for (i = 0; ep_acks && i < vhub->max_epns; i++) { > > u32 mask = VHUB_EP_IRQ(i); > > if (ep_acks & mask) { > > ast_vhub_epn_ack_irq(&vhub->epns[i]); > > @@ -134,21 +157,11 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) > > } > > > > /* Handle device interrupts */ > > - if (istat & (VHUB_IRQ_DEVICE1 | > > - VHUB_IRQ_DEVICE2 | > > - VHUB_IRQ_DEVICE3 | > > - VHUB_IRQ_DEVICE4 | > > - VHUB_IRQ_DEVICE5)) { > > - if (istat & VHUB_IRQ_DEVICE1) > > - ast_vhub_dev_irq(&vhub->ports[0].dev); > > - if (istat & VHUB_IRQ_DEVICE2) > > - ast_vhub_dev_irq(&vhub->ports[1].dev); > > - if (istat & VHUB_IRQ_DEVICE3) > > - ast_vhub_dev_irq(&vhub->ports[2].dev); > > - if (istat & VHUB_IRQ_DEVICE4) > > - ast_vhub_dev_irq(&vhub->ports[3].dev); > > - if (istat & VHUB_IRQ_DEVICE5) > > - ast_vhub_dev_irq(&vhub->ports[4].dev); > > + for (i = 0; i < vhub->max_ports; i++) { > > + u32 dev_mask = VHUB_IRQ_DEVICE1 << i; > > + > > + if (istat & dev_mask) > > + ast_vhub_dev_irq(&vhub->ports[i].dev); > > } > > > > /* Handle top-level vHub EP0 interrupts */ > > @@ -182,7 +195,7 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) > > > > void ast_vhub_init_hw(struct ast_vhub *vhub) > > { > > - u32 ctrl; > > + u32 ctrl, port_mask, epn_mask; > > > > UDCDBG(vhub,"(Re)Starting HW ...\n"); > > > > @@ -222,15 +235,20 @@ void ast_vhub_init_hw(struct ast_vhub *vhub) > > } > > > > /* Reset all devices */ > > - writel(VHUB_SW_RESET_ALL, vhub->regs + AST_VHUB_SW_RESET); > > + port_mask = GENMASK(vhub->max_ports, 1); > > + writel(VHUB_SW_RESET_ROOT_HUB | > > + VHUB_SW_RESET_DMA_CONTROLLER | > > + VHUB_SW_RESET_EP_POOL | > > + port_mask, vhub->regs + AST_VHUB_SW_RESET); > > udelay(1); > > writel(0, vhub->regs + AST_VHUB_SW_RESET); > > > > /* Disable and cleanup EP ACK/NACK interrupts */ > > + epn_mask = GENMASK(vhub->max_epns - 1, 0); > > writel(0, vhub->regs + AST_VHUB_EP_ACK_IER); > > writel(0, vhub->regs + AST_VHUB_EP_NACK_IER); > > - writel(VHUB_EP_IRQ_ALL, vhub->regs + AST_VHUB_EP_ACK_ISR); > > - writel(VHUB_EP_IRQ_ALL, vhub->regs + AST_VHUB_EP_NACK_ISR); > > + writel(epn_mask, vhub->regs + AST_VHUB_EP_ACK_ISR); > > + writel(epn_mask, vhub->regs + AST_VHUB_EP_NACK_ISR); > > > > /* Default settings for EP0, enable HW hub EP1 */ > > writel(0, vhub->regs + AST_VHUB_EP0_CTRL); > > @@ -273,7 +291,7 @@ static int ast_vhub_remove(struct platform_device *pdev) > > return 0; > > > > /* Remove devices */ > > - for (i = 0; i < AST_VHUB_NUM_PORTS; i++) > > + for (i = 0; i < vhub->max_ports; i++) > > ast_vhub_del_dev(&vhub->ports[i].dev); > > > > spin_lock_irqsave(&vhub->lock, flags); > > @@ -295,7 +313,7 @@ static int ast_vhub_remove(struct platform_device *pdev) > > if (vhub->ep0_bufs) > > dma_free_coherent(&pdev->dev, > > AST_VHUB_EP0_MAX_PACKET * > > - (AST_VHUB_NUM_PORTS + 1), > > + (vhub->max_ports + 1), > > vhub->ep0_bufs, > > vhub->ep0_bufs_dma); > > vhub->ep0_bufs = NULL; > > @@ -309,11 +327,30 @@ static int ast_vhub_probe(struct platform_device *pdev) > > struct ast_vhub *vhub; > > struct resource *res; > > int i, rc = 0; > > + const struct of_device_id *ofdid; > > + struct ast_vhub_config *config; > > > > vhub = devm_kzalloc(&pdev->dev, sizeof(*vhub), GFP_KERNEL); > > if (!vhub) > > return -ENOMEM; > > > > + ofdid = of_match_node(ast_vhub_dt_ids, pdev->dev.of_node); > > + if (!ofdid) > > + return -EINVAL; > > + config = ofdid->data; > > + > > + vhub->max_ports = config->max_ports; > > + vhub->ports = devm_kcalloc(&pdev->dev, vhub->max_ports, > > + sizeof(*vhub->ports), GFP_KERNEL); > > + if (!vhub->ports) > > + return -ENOMEM; > > + > > + vhub->max_epns = config->max_epns; > > + vhub->epns = devm_kcalloc(&pdev->dev, vhub->max_epns, > > + sizeof(*vhub->epns), GFP_KERNEL); > > + if (!vhub->epns) > > + return -ENOMEM; > > + > > spin_lock_init(&vhub->lock); > > vhub->pdev = pdev; > > > > @@ -366,7 +403,7 @@ static int ast_vhub_probe(struct platform_device *pdev) > > */ > > vhub->ep0_bufs = dma_alloc_coherent(&pdev->dev, > > AST_VHUB_EP0_MAX_PACKET * > > - (AST_VHUB_NUM_PORTS + 1), > > + (vhub->max_ports + 1), > > &vhub->ep0_bufs_dma, GFP_KERNEL); > > if (!vhub->ep0_bufs) { > > dev_err(&pdev->dev, "Failed to allocate EP0 DMA buffers\n"); > > @@ -380,7 +417,7 @@ static int ast_vhub_probe(struct platform_device *pdev) > > ast_vhub_init_ep0(vhub, &vhub->ep0, NULL); > > > > /* Init devices */ > > - for (i = 0; i < AST_VHUB_NUM_PORTS && rc == 0; i++) > > + for (i = 0; i < vhub->max_ports && rc == 0; i++) > > rc = ast_vhub_init_dev(vhub, i); > > if (rc) > > goto err; > > @@ -400,17 +437,6 @@ static int ast_vhub_probe(struct platform_device *pdev) > > return rc; > > } > > > > -static const struct of_device_id ast_vhub_dt_ids[] = { > > - { > > - .compatible = "aspeed,ast2400-usb-vhub", > > - }, > > - { > > - .compatible = "aspeed,ast2500-usb-vhub", > > - }, > > - { } > > -}; > > -MODULE_DEVICE_TABLE(of, ast_vhub_dt_ids); > > - > > static struct platform_driver ast_vhub_driver = { > > .probe = ast_vhub_probe, > > .remove = ast_vhub_remove, > > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/dev.c > > b/drivers/usb/gadget/udc/aspeed-vhub/dev.c > > index 4008e7a51188..f9b762951121 100644 > > --- a/drivers/usb/gadget/udc/aspeed-vhub/dev.c > > +++ b/drivers/usb/gadget/udc/aspeed-vhub/dev.c > > @@ -77,7 +77,7 @@ static void ast_vhub_dev_enable(struct ast_vhub_dev > > *d) > > writel(d->ep0.buf_dma, d->regs + AST_VHUB_DEV_EP0_DATA); > > > > /* Clear stall on all EPs */ > > - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) { > > + for (i = 0; i < d->max_epns; i++) { > > struct ast_vhub_ep *ep = d->epns[i]; > > > > if (ep && (ep->epn.stalled || ep->epn.wedged)) { > > @@ -137,7 +137,7 @@ static int ast_vhub_ep_feature(struct ast_vhub_dev *d, > > is_set ? "SET" : "CLEAR", ep_num, wValue); > > if (ep_num == 0) > > return std_req_complete; > > - if (ep_num >= AST_VHUB_NUM_GEN_EPs || !d->epns[ep_num - 1]) > > + if (ep_num >= d->max_epns || !d->epns[ep_num - 1]) > > return std_req_stall; > > if (wValue != USB_ENDPOINT_HALT) > > return std_req_driver; > > @@ -181,7 +181,7 @@ static int ast_vhub_ep_status(struct ast_vhub_dev *d, > > > > DDBG(d, "GET_STATUS(ep%d)\n", ep_num); > > > > - if (ep_num >= AST_VHUB_NUM_GEN_EPs) > > + if (ep_num >= d->max_epns) > > return std_req_stall; > > if (ep_num != 0) { > > ep = d->epns[ep_num - 1]; > > @@ -299,7 +299,7 @@ static void ast_vhub_dev_nuke(struct ast_vhub_dev *d) > > { > > unsigned int i; > > > > - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) { > > + for (i = 0; i < d->max_epns; i++) { > > if (!d->epns[i]) > > continue; > > ast_vhub_nuke(d->epns[i], -ESHUTDOWN); > > @@ -416,10 +416,10 @@ static struct usb_ep > > *ast_vhub_udc_match_ep(struct usb_gadget *gadget, > > * that will allow the generic code to use our > > * assigned address. > > */ > > - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) > > + for (i = 0; i < d->max_epns; i++) > > if (d->epns[i] == NULL) > > break; > > - if (i >= AST_VHUB_NUM_GEN_EPs) > > + if (i >= d->max_epns) > > return NULL; > > addr = i + 1; > > > > @@ -526,6 +526,7 @@ void ast_vhub_del_dev(struct ast_vhub_dev *d) > > > > usb_del_gadget_udc(&d->gadget); > > device_unregister(d->port_dev); > > + kfree(d->epns); > > } > > > > static void ast_vhub_dev_release(struct device *dev) > > @@ -546,14 +547,25 @@ int ast_vhub_init_dev(struct ast_vhub *vhub, > > unsigned int idx) > > > > ast_vhub_init_ep0(vhub, &d->ep0, d); > > > > + /* > > + * A USB device can have up to 30 endpoints besides control > > + * endpoint 0. > > + */ > > + d->max_epns = min(vhub->max_epns, 30); > > + d->epns = kcalloc(d->max_epns, sizeof(*d->epns), GFP_KERNEL); > > + if (!d->epns) > > + return -ENOMEM; > > + > > /* > > * The UDC core really needs us to have separate and uniquely > > * named "parent" devices for each port so we create a sub device > > * here for that purpose > > */ > > d->port_dev = kzalloc(sizeof(struct device), GFP_KERNEL); > > - if (!d->port_dev) > > - return -ENOMEM; > > + if (!d->port_dev) { > > + rc = -ENOMEM; > > + goto fail_alloc; > > + } > > device_initialize(d->port_dev); > > d->port_dev->release = ast_vhub_dev_release; > > d->port_dev->parent = parent; > > @@ -584,6 +596,8 @@ int ast_vhub_init_dev(struct ast_vhub *vhub, > > unsigned int idx) > > device_del(d->port_dev); > > fail_add: > > put_device(d->port_dev); > > + fail_alloc: > > + kfree(d->epns); > > > > return rc; > > } > > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/epn.c > > b/drivers/usb/gadget/udc/aspeed-vhub/epn.c > > index 7475c74aa5c5..0bd6b20435b8 100644 > > --- a/drivers/usb/gadget/udc/aspeed-vhub/epn.c > > +++ b/drivers/usb/gadget/udc/aspeed-vhub/epn.c > > @@ -800,10 +800,10 @@ struct ast_vhub_ep *ast_vhub_alloc_epn(struct > > ast_vhub_dev *d, u8 addr) > > > > /* Find a free one (no device) */ > > spin_lock_irqsave(&vhub->lock, flags); > > - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) > > + for (i = 0; i < vhub->max_epns; i++) > > if (vhub->epns[i].dev == NULL) > > break; > > - if (i >= AST_VHUB_NUM_GEN_EPs) { > > + if (i >= vhub->max_epns) { > > spin_unlock_irqrestore(&vhub->lock, flags); > > return NULL; > > } > > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > b/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > index 19b3517e04c0..aa1c127e9f2f 100644 > > --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > @@ -133,10 +133,9 @@ static const struct ast_vhub_full_cdesc { > > > > #define AST_VHUB_HUB_DESC_SIZE (USB_DT_HUB_NONVAR_SIZE + 2) > > > > -static const struct usb_hub_descriptor ast_vhub_hub_desc = { > > +static struct usb_hub_descriptor ast_vhub_hub_desc = { > > This seems unfortunate, though we only have one on the SoC... is > it worth dynamically allocating it? Or adding a comment? > > Andrew According to the comment at the beginning of the file (line 39-47), we may customize more descriptors in the future. Adding comments involves little change in this case, because by allocating the descriptors, we will also need a function to free the descriptors when ast_vhub_remove is called. Anyways I'm fine with either way. There is another option which is to fixup descriptors in request_desc callback, like ast_vhub_patch_dev_desc_usb1() in the file. But I don't like the approach personally. Which way do you prefer? Cheers, Tao
On Fri, 24 Jan 2020, at 11:53, Tao Ren wrote: > On Fri, Jan 24, 2020 at 10:39:45AM +1030, Andrew Jeffery wrote: > > > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > > b/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > > index 19b3517e04c0..aa1c127e9f2f 100644 > > > --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > > +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > > @@ -133,10 +133,9 @@ static const struct ast_vhub_full_cdesc { > > > > > > #define AST_VHUB_HUB_DESC_SIZE (USB_DT_HUB_NONVAR_SIZE + 2) > > > > > > -static const struct usb_hub_descriptor ast_vhub_hub_desc = { > > > +static struct usb_hub_descriptor ast_vhub_hub_desc = { > > > > This seems unfortunate, though we only have one on the SoC... is > > it worth dynamically allocating it? Or adding a comment? > > > > Andrew > > According to the comment at the beginning of the file (line 39-47), we > may customize more descriptors in the future. Adding comments involves > little change in this case, because by allocating the descriptors, we > will also need a function to free the descriptors when ast_vhub_remove > is called. Anyways I'm fine with either way. > > There is another option which is to fixup descriptors in request_desc > callback, like ast_vhub_patch_dev_desc_usb1() in the file. But I don't > like the approach personally. > > Which way do you prefer? I'm not wedded to doing anything different from what you've already got in the patch - we don't have hardware that requires a different solution at this point. We can always fix the driver if that changes. The approach just felt a bit icky, but I can live with that :) Andrew
On Tue, Jan 28, 2020 at 11:27:57AM +1030, Andrew Jeffery wrote: > > > On Fri, 24 Jan 2020, at 11:53, Tao Ren wrote: > > On Fri, Jan 24, 2020 at 10:39:45AM +1030, Andrew Jeffery wrote: > > > > diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > > > b/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > > > index 19b3517e04c0..aa1c127e9f2f 100644 > > > > --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > > > +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c > > > > @@ -133,10 +133,9 @@ static const struct ast_vhub_full_cdesc { > > > > > > > > #define AST_VHUB_HUB_DESC_SIZE (USB_DT_HUB_NONVAR_SIZE + 2) > > > > > > > > -static const struct usb_hub_descriptor ast_vhub_hub_desc = { > > > > +static struct usb_hub_descriptor ast_vhub_hub_desc = { > > > > > > This seems unfortunate, though we only have one on the SoC... is > > > it worth dynamically allocating it? Or adding a comment? > > > > > > Andrew > > > > According to the comment at the beginning of the file (line 39-47), we > > may customize more descriptors in the future. Adding comments involves > > little change in this case, because by allocating the descriptors, we > > will also need a function to free the descriptors when ast_vhub_remove > > is called. Anyways I'm fine with either way. > > > > There is another option which is to fixup descriptors in request_desc > > callback, like ast_vhub_patch_dev_desc_usb1() in the file. But I don't > > like the approach personally. > > > > Which way do you prefer? > > I'm not wedded to doing anything different from what you've already got > in the patch - we don't have hardware that requires a different solution at > this point. We can always fix the driver if that changes. The approach just > felt a bit icky, but I can live with that :) > > Andrew Thanks Andrew. I just sent out patch v3 which adds some comments for the hub descriptor; 2 compile warnings are also fixed in v3. Please kindly review when you have bandwidth. Cheers, Tao
diff --git a/drivers/usb/gadget/udc/aspeed-vhub/core.c b/drivers/usb/gadget/udc/aspeed-vhub/core.c index 90b134d5dca9..9efbfdffad30 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/core.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/core.c @@ -32,6 +32,29 @@ #include "vhub.h" +struct ast_vhub_config { + u32 max_ports; /* max number of downstream ports */ + u32 max_epns; /* max number of generic endpoints */ +}; + +static const struct ast_vhub_config ast2400_config = { + .max_ports = 5, + .max_epns = 15, +}; + +static const struct of_device_id ast_vhub_dt_ids[] = { + { + .compatible = "aspeed,ast2400-usb-vhub", + .data = &ast2400_config, + }, + { + .compatible = "aspeed,ast2500-usb-vhub", + .data = &ast2400_config, + }, + { } +}; +MODULE_DEVICE_TABLE(of, ast_vhub_dt_ids); + void ast_vhub_done(struct ast_vhub_ep *ep, struct ast_vhub_req *req, int status) { @@ -99,7 +122,7 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) { struct ast_vhub *vhub = data; irqreturn_t iret = IRQ_NONE; - u32 istat; + u32 i, istat; /* Stale interrupt while tearing down */ if (!vhub->ep0_bufs) @@ -121,10 +144,10 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) /* Handle generic EPs first */ if (istat & VHUB_IRQ_EP_POOL_ACK_STALL) { - u32 i, ep_acks = readl(vhub->regs + AST_VHUB_EP_ACK_ISR); + u32 ep_acks = readl(vhub->regs + AST_VHUB_EP_ACK_ISR); writel(ep_acks, vhub->regs + AST_VHUB_EP_ACK_ISR); - for (i = 0; ep_acks && i < AST_VHUB_NUM_GEN_EPs; i++) { + for (i = 0; ep_acks && i < vhub->max_epns; i++) { u32 mask = VHUB_EP_IRQ(i); if (ep_acks & mask) { ast_vhub_epn_ack_irq(&vhub->epns[i]); @@ -134,21 +157,11 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) } /* Handle device interrupts */ - if (istat & (VHUB_IRQ_DEVICE1 | - VHUB_IRQ_DEVICE2 | - VHUB_IRQ_DEVICE3 | - VHUB_IRQ_DEVICE4 | - VHUB_IRQ_DEVICE5)) { - if (istat & VHUB_IRQ_DEVICE1) - ast_vhub_dev_irq(&vhub->ports[0].dev); - if (istat & VHUB_IRQ_DEVICE2) - ast_vhub_dev_irq(&vhub->ports[1].dev); - if (istat & VHUB_IRQ_DEVICE3) - ast_vhub_dev_irq(&vhub->ports[2].dev); - if (istat & VHUB_IRQ_DEVICE4) - ast_vhub_dev_irq(&vhub->ports[3].dev); - if (istat & VHUB_IRQ_DEVICE5) - ast_vhub_dev_irq(&vhub->ports[4].dev); + for (i = 0; i < vhub->max_ports; i++) { + u32 dev_mask = VHUB_IRQ_DEVICE1 << i; + + if (istat & dev_mask) + ast_vhub_dev_irq(&vhub->ports[i].dev); } /* Handle top-level vHub EP0 interrupts */ @@ -182,7 +195,7 @@ static irqreturn_t ast_vhub_irq(int irq, void *data) void ast_vhub_init_hw(struct ast_vhub *vhub) { - u32 ctrl; + u32 ctrl, port_mask, epn_mask; UDCDBG(vhub,"(Re)Starting HW ...\n"); @@ -222,15 +235,20 @@ void ast_vhub_init_hw(struct ast_vhub *vhub) } /* Reset all devices */ - writel(VHUB_SW_RESET_ALL, vhub->regs + AST_VHUB_SW_RESET); + port_mask = GENMASK(vhub->max_ports, 1); + writel(VHUB_SW_RESET_ROOT_HUB | + VHUB_SW_RESET_DMA_CONTROLLER | + VHUB_SW_RESET_EP_POOL | + port_mask, vhub->regs + AST_VHUB_SW_RESET); udelay(1); writel(0, vhub->regs + AST_VHUB_SW_RESET); /* Disable and cleanup EP ACK/NACK interrupts */ + epn_mask = GENMASK(vhub->max_epns - 1, 0); writel(0, vhub->regs + AST_VHUB_EP_ACK_IER); writel(0, vhub->regs + AST_VHUB_EP_NACK_IER); - writel(VHUB_EP_IRQ_ALL, vhub->regs + AST_VHUB_EP_ACK_ISR); - writel(VHUB_EP_IRQ_ALL, vhub->regs + AST_VHUB_EP_NACK_ISR); + writel(epn_mask, vhub->regs + AST_VHUB_EP_ACK_ISR); + writel(epn_mask, vhub->regs + AST_VHUB_EP_NACK_ISR); /* Default settings for EP0, enable HW hub EP1 */ writel(0, vhub->regs + AST_VHUB_EP0_CTRL); @@ -273,7 +291,7 @@ static int ast_vhub_remove(struct platform_device *pdev) return 0; /* Remove devices */ - for (i = 0; i < AST_VHUB_NUM_PORTS; i++) + for (i = 0; i < vhub->max_ports; i++) ast_vhub_del_dev(&vhub->ports[i].dev); spin_lock_irqsave(&vhub->lock, flags); @@ -295,7 +313,7 @@ static int ast_vhub_remove(struct platform_device *pdev) if (vhub->ep0_bufs) dma_free_coherent(&pdev->dev, AST_VHUB_EP0_MAX_PACKET * - (AST_VHUB_NUM_PORTS + 1), + (vhub->max_ports + 1), vhub->ep0_bufs, vhub->ep0_bufs_dma); vhub->ep0_bufs = NULL; @@ -309,11 +327,30 @@ static int ast_vhub_probe(struct platform_device *pdev) struct ast_vhub *vhub; struct resource *res; int i, rc = 0; + const struct of_device_id *ofdid; + struct ast_vhub_config *config; vhub = devm_kzalloc(&pdev->dev, sizeof(*vhub), GFP_KERNEL); if (!vhub) return -ENOMEM; + ofdid = of_match_node(ast_vhub_dt_ids, pdev->dev.of_node); + if (!ofdid) + return -EINVAL; + config = ofdid->data; + + vhub->max_ports = config->max_ports; + vhub->ports = devm_kcalloc(&pdev->dev, vhub->max_ports, + sizeof(*vhub->ports), GFP_KERNEL); + if (!vhub->ports) + return -ENOMEM; + + vhub->max_epns = config->max_epns; + vhub->epns = devm_kcalloc(&pdev->dev, vhub->max_epns, + sizeof(*vhub->epns), GFP_KERNEL); + if (!vhub->epns) + return -ENOMEM; + spin_lock_init(&vhub->lock); vhub->pdev = pdev; @@ -366,7 +403,7 @@ static int ast_vhub_probe(struct platform_device *pdev) */ vhub->ep0_bufs = dma_alloc_coherent(&pdev->dev, AST_VHUB_EP0_MAX_PACKET * - (AST_VHUB_NUM_PORTS + 1), + (vhub->max_ports + 1), &vhub->ep0_bufs_dma, GFP_KERNEL); if (!vhub->ep0_bufs) { dev_err(&pdev->dev, "Failed to allocate EP0 DMA buffers\n"); @@ -380,7 +417,7 @@ static int ast_vhub_probe(struct platform_device *pdev) ast_vhub_init_ep0(vhub, &vhub->ep0, NULL); /* Init devices */ - for (i = 0; i < AST_VHUB_NUM_PORTS && rc == 0; i++) + for (i = 0; i < vhub->max_ports && rc == 0; i++) rc = ast_vhub_init_dev(vhub, i); if (rc) goto err; @@ -400,17 +437,6 @@ static int ast_vhub_probe(struct platform_device *pdev) return rc; } -static const struct of_device_id ast_vhub_dt_ids[] = { - { - .compatible = "aspeed,ast2400-usb-vhub", - }, - { - .compatible = "aspeed,ast2500-usb-vhub", - }, - { } -}; -MODULE_DEVICE_TABLE(of, ast_vhub_dt_ids); - static struct platform_driver ast_vhub_driver = { .probe = ast_vhub_probe, .remove = ast_vhub_remove, diff --git a/drivers/usb/gadget/udc/aspeed-vhub/dev.c b/drivers/usb/gadget/udc/aspeed-vhub/dev.c index 4008e7a51188..f9b762951121 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/dev.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/dev.c @@ -77,7 +77,7 @@ static void ast_vhub_dev_enable(struct ast_vhub_dev *d) writel(d->ep0.buf_dma, d->regs + AST_VHUB_DEV_EP0_DATA); /* Clear stall on all EPs */ - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) { + for (i = 0; i < d->max_epns; i++) { struct ast_vhub_ep *ep = d->epns[i]; if (ep && (ep->epn.stalled || ep->epn.wedged)) { @@ -137,7 +137,7 @@ static int ast_vhub_ep_feature(struct ast_vhub_dev *d, is_set ? "SET" : "CLEAR", ep_num, wValue); if (ep_num == 0) return std_req_complete; - if (ep_num >= AST_VHUB_NUM_GEN_EPs || !d->epns[ep_num - 1]) + if (ep_num >= d->max_epns || !d->epns[ep_num - 1]) return std_req_stall; if (wValue != USB_ENDPOINT_HALT) return std_req_driver; @@ -181,7 +181,7 @@ static int ast_vhub_ep_status(struct ast_vhub_dev *d, DDBG(d, "GET_STATUS(ep%d)\n", ep_num); - if (ep_num >= AST_VHUB_NUM_GEN_EPs) + if (ep_num >= d->max_epns) return std_req_stall; if (ep_num != 0) { ep = d->epns[ep_num - 1]; @@ -299,7 +299,7 @@ static void ast_vhub_dev_nuke(struct ast_vhub_dev *d) { unsigned int i; - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) { + for (i = 0; i < d->max_epns; i++) { if (!d->epns[i]) continue; ast_vhub_nuke(d->epns[i], -ESHUTDOWN); @@ -416,10 +416,10 @@ static struct usb_ep *ast_vhub_udc_match_ep(struct usb_gadget *gadget, * that will allow the generic code to use our * assigned address. */ - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) + for (i = 0; i < d->max_epns; i++) if (d->epns[i] == NULL) break; - if (i >= AST_VHUB_NUM_GEN_EPs) + if (i >= d->max_epns) return NULL; addr = i + 1; @@ -526,6 +526,7 @@ void ast_vhub_del_dev(struct ast_vhub_dev *d) usb_del_gadget_udc(&d->gadget); device_unregister(d->port_dev); + kfree(d->epns); } static void ast_vhub_dev_release(struct device *dev) @@ -546,14 +547,25 @@ int ast_vhub_init_dev(struct ast_vhub *vhub, unsigned int idx) ast_vhub_init_ep0(vhub, &d->ep0, d); + /* + * A USB device can have up to 30 endpoints besides control + * endpoint 0. + */ + d->max_epns = min(vhub->max_epns, 30); + d->epns = kcalloc(d->max_epns, sizeof(*d->epns), GFP_KERNEL); + if (!d->epns) + return -ENOMEM; + /* * The UDC core really needs us to have separate and uniquely * named "parent" devices for each port so we create a sub device * here for that purpose */ d->port_dev = kzalloc(sizeof(struct device), GFP_KERNEL); - if (!d->port_dev) - return -ENOMEM; + if (!d->port_dev) { + rc = -ENOMEM; + goto fail_alloc; + } device_initialize(d->port_dev); d->port_dev->release = ast_vhub_dev_release; d->port_dev->parent = parent; @@ -584,6 +596,8 @@ int ast_vhub_init_dev(struct ast_vhub *vhub, unsigned int idx) device_del(d->port_dev); fail_add: put_device(d->port_dev); + fail_alloc: + kfree(d->epns); return rc; } diff --git a/drivers/usb/gadget/udc/aspeed-vhub/epn.c b/drivers/usb/gadget/udc/aspeed-vhub/epn.c index 7475c74aa5c5..0bd6b20435b8 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/epn.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/epn.c @@ -800,10 +800,10 @@ struct ast_vhub_ep *ast_vhub_alloc_epn(struct ast_vhub_dev *d, u8 addr) /* Find a free one (no device) */ spin_lock_irqsave(&vhub->lock, flags); - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) + for (i = 0; i < vhub->max_epns; i++) if (vhub->epns[i].dev == NULL) break; - if (i >= AST_VHUB_NUM_GEN_EPs) { + if (i >= vhub->max_epns) { spin_unlock_irqrestore(&vhub->lock, flags); return NULL; } diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c b/drivers/usb/gadget/udc/aspeed-vhub/hub.c index 19b3517e04c0..aa1c127e9f2f 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c @@ -133,10 +133,9 @@ static const struct ast_vhub_full_cdesc { #define AST_VHUB_HUB_DESC_SIZE (USB_DT_HUB_NONVAR_SIZE + 2) -static const struct usb_hub_descriptor ast_vhub_hub_desc = { +static struct usb_hub_descriptor ast_vhub_hub_desc = { .bDescLength = AST_VHUB_HUB_DESC_SIZE, .bDescriptorType = USB_DT_HUB, - .bNbrPorts = AST_VHUB_NUM_PORTS, .wHubCharacteristics = cpu_to_le16(HUB_CHAR_NO_LPSM), .bPwrOn2PwrGood = 10, .bHubContrCurrent = 0, @@ -504,7 +503,7 @@ static void ast_vhub_wake_work(struct work_struct *work) * we let the normal host wake path deal with it later. */ spin_lock_irqsave(&vhub->lock, flags); - for (i = 0; i < AST_VHUB_NUM_PORTS; i++) { + for (i = 0; i < vhub->max_ports; i++) { struct ast_vhub_port *p = &vhub->ports[i]; if (!(p->status & USB_PORT_STAT_SUSPEND)) @@ -587,7 +586,7 @@ static enum std_req_rc ast_vhub_set_port_feature(struct ast_vhub_ep *ep, struct ast_vhub *vhub = ep->vhub; struct ast_vhub_port *p; - if (port == 0 || port > AST_VHUB_NUM_PORTS) + if (port == 0 || port > vhub->max_ports) return std_req_stall; port--; p = &vhub->ports[port]; @@ -630,7 +629,7 @@ static enum std_req_rc ast_vhub_clr_port_feature(struct ast_vhub_ep *ep, struct ast_vhub *vhub = ep->vhub; struct ast_vhub_port *p; - if (port == 0 || port > AST_VHUB_NUM_PORTS) + if (port == 0 || port > vhub->max_ports) return std_req_stall; port--; p = &vhub->ports[port]; @@ -676,7 +675,7 @@ static enum std_req_rc ast_vhub_get_port_stat(struct ast_vhub_ep *ep, struct ast_vhub *vhub = ep->vhub; u16 stat, chg; - if (port == 0 || port > AST_VHUB_NUM_PORTS) + if (port == 0 || port > vhub->max_ports) return std_req_stall; port--; @@ -757,7 +756,7 @@ void ast_vhub_hub_suspend(struct ast_vhub *vhub) * Forward to unsuspended ports without changing * their connection status. */ - for (i = 0; i < AST_VHUB_NUM_PORTS; i++) { + for (i = 0; i < vhub->max_ports; i++) { struct ast_vhub_port *p = &vhub->ports[i]; if (!(p->status & USB_PORT_STAT_SUSPEND)) @@ -780,7 +779,7 @@ void ast_vhub_hub_resume(struct ast_vhub *vhub) * Forward to unsuspended ports without changing * their connection status. */ - for (i = 0; i < AST_VHUB_NUM_PORTS; i++) { + for (i = 0; i < vhub->max_ports; i++) { struct ast_vhub_port *p = &vhub->ports[i]; if (!(p->status & USB_PORT_STAT_SUSPEND)) @@ -814,7 +813,7 @@ void ast_vhub_hub_reset(struct ast_vhub *vhub) * Clear all port status, disable gadgets and "suspend" * them. They will be woken up by a port reset. */ - for (i = 0; i < AST_VHUB_NUM_PORTS; i++) { + for (i = 0; i < vhub->max_ports; i++) { struct ast_vhub_port *p = &vhub->ports[i]; /* Only keep the connected flag */ @@ -838,5 +837,10 @@ void ast_vhub_init_hub(struct ast_vhub *vhub) { vhub->speed = USB_SPEED_UNKNOWN; INIT_WORK(&vhub->wake_work, ast_vhub_wake_work); + + /* + * Fixup number of ports in hub descriptor. + */ + ast_vhub_hub_desc.bNbrPorts = vhub->max_ports; } diff --git a/drivers/usb/gadget/udc/aspeed-vhub/vhub.h b/drivers/usb/gadget/udc/aspeed-vhub/vhub.h index 761919e220d3..11414548cd32 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/vhub.h +++ b/drivers/usb/gadget/udc/aspeed-vhub/vhub.h @@ -76,17 +76,9 @@ #define VHUB_SW_RESET_DEVICE2 (1 << 2) #define VHUB_SW_RESET_DEVICE1 (1 << 1) #define VHUB_SW_RESET_ROOT_HUB (1 << 0) -#define VHUB_SW_RESET_ALL (VHUB_SW_RESET_EP_POOL | \ - VHUB_SW_RESET_DMA_CONTROLLER | \ - VHUB_SW_RESET_DEVICE5 | \ - VHUB_SW_RESET_DEVICE4 | \ - VHUB_SW_RESET_DEVICE3 | \ - VHUB_SW_RESET_DEVICE2 | \ - VHUB_SW_RESET_DEVICE1 | \ - VHUB_SW_RESET_ROOT_HUB) + /* EP ACK/NACK IRQ masks */ #define VHUB_EP_IRQ(n) (1 << (n)) -#define VHUB_EP_IRQ_ALL 0x7fff /* 15 EPs */ /* USB status reg */ #define VHUB_USBSTS_HISPEED (1 << 27) @@ -210,8 +202,6 @@ * * ****************************************/ -#define AST_VHUB_NUM_GEN_EPs 15 /* Generic non-0 EPs */ -#define AST_VHUB_NUM_PORTS 5 /* vHub ports */ #define AST_VHUB_EP0_MAX_PACKET 64 /* EP0's max packet size */ #define AST_VHUB_EPn_MAX_PACKET 1024 /* Generic EPs max packet size */ #define AST_VHUB_DESCS_COUNT 256 /* Use 256 descriptor mode (valid @@ -358,7 +348,8 @@ struct ast_vhub_dev { /* Endpoint structures */ struct ast_vhub_ep ep0; - struct ast_vhub_ep *epns[AST_VHUB_NUM_GEN_EPs]; + struct ast_vhub_ep **epns; + u32 max_epns; }; #define to_ast_dev(__g) container_of(__g, struct ast_vhub_dev, gadget) @@ -393,10 +384,12 @@ struct ast_vhub { bool ep1_stalled : 1; /* Per-port info */ - struct ast_vhub_port ports[AST_VHUB_NUM_PORTS]; + struct ast_vhub_port *ports; + u32 max_ports; /* Generic EP data structures */ - struct ast_vhub_ep epns[AST_VHUB_NUM_GEN_EPs]; + struct ast_vhub_ep *epns; + u32 max_epns; /* Upstream bus is suspended ? */ bool suspended : 1;