* (c) 2011 Arvid Brodin <arvid.brodin@enea.com>
*
*/
+#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/timer.h>
#include <asm/unaligned.h>
#include <asm/cacheflush.h>
-#include <linux/gpio.h>
+#include "isp1760-core.h"
#include "isp1760-hcd.h"
+#include "isp1760-regs.h"
static struct kmem_cache *qtd_cachep;
static struct kmem_cache *qh_cachep;
static struct kmem_cache *urb_listitem_cachep;
-enum queue_head_types {
- QH_CONTROL,
- QH_BULK,
- QH_INTERRUPT,
- QH_END
-};
-
-struct isp1760_hcd {
- u32 hcs_params;
- spinlock_t lock;
- struct slotinfo atl_slots[32];
- int atl_done_map;
- struct slotinfo int_slots[32];
- int int_done_map;
- struct memory_chunk memory_pool[BLOCKS];
- struct list_head qh_list[QH_END];
-
- /* periodic schedule support */
-#define DEFAULT_I_TDPS 1024
- unsigned periodic_size;
- unsigned i_thresh;
- unsigned long reset_done;
- unsigned long next_statechange;
- unsigned int devflags;
-
- int rst_gpio;
-};
+typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh,
+ struct isp1760_qtd *qtd);
static inline struct isp1760_hcd *hcd_to_priv(struct usb_hcd *hcd)
{
- return (struct isp1760_hcd *) (hcd->hcd_priv);
+ return *(struct isp1760_hcd **)hcd->hcd_priv;
}
-/* Section 2.2 Host Controller Capability Registers */
-#define HC_LENGTH(p) (((p)>>00)&0x00ff) /* bits 7:0 */
-#define HC_VERSION(p) (((p)>>16)&0xffff) /* bits 31:16 */
-#define HCS_INDICATOR(p) ((p)&(1 << 16)) /* true: has port indicators */
-#define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */
-#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */
-#define HCC_ISOC_CACHE(p) ((p)&(1 << 7)) /* true: can cache isoc frame */
-#define HCC_ISOC_THRES(p) (((p)>>4)&0x7) /* bits 6:4, uframes cached */
-
-/* Section 2.3 Host Controller Operational Registers */
-#define CMD_LRESET (1<<7) /* partial reset (no ports, etc) */
-#define CMD_RESET (1<<1) /* reset HC not bus */
-#define CMD_RUN (1<<0) /* start/stop HC */
-#define STS_PCD (1<<2) /* port change detect */
-#define FLAG_CF (1<<0) /* true: we'll support "high speed" */
-
-#define PORT_OWNER (1<<13) /* true: companion hc owns this port */
-#define PORT_POWER (1<<12) /* true: has power (see PPC) */
-#define PORT_USB11(x) (((x) & (3 << 10)) == (1 << 10)) /* USB 1.1 device */
-#define PORT_RESET (1<<8) /* reset port */
-#define PORT_SUSPEND (1<<7) /* suspend port */
-#define PORT_RESUME (1<<6) /* resume it */
-#define PORT_PE (1<<2) /* port enable */
-#define PORT_CSC (1<<1) /* connect status change */
-#define PORT_CONNECT (1<<0) /* device connected */
-#define PORT_RWC_BITS (PORT_CSC)
+/* urb state*/
+#define DELETE_URB (0x0008)
+#define NO_TRANSFER_ACTIVE (0xffffffff)
+
+/* Philips Proprietary Transfer Descriptor (PTD) */
+typedef __u32 __bitwise __dw;
+struct ptd {
+ __dw dw0;
+ __dw dw1;
+ __dw dw2;
+ __dw dw3;
+ __dw dw4;
+ __dw dw5;
+ __dw dw6;
+ __dw dw7;
+};
+#define PTD_OFFSET 0x0400
+#define ISO_PTD_OFFSET 0x0400
+#define INT_PTD_OFFSET 0x0800
+#define ATL_PTD_OFFSET 0x0c00
+#define PAYLOAD_OFFSET 0x1000
+
+
+/* ATL */
+/* DW0 */
+#define DW0_VALID_BIT 1
+#define FROM_DW0_VALID(x) ((x) & 0x01)
+#define TO_DW0_LENGTH(x) (((u32) x) << 3)
+#define TO_DW0_MAXPACKET(x) (((u32) x) << 18)
+#define TO_DW0_MULTI(x) (((u32) x) << 29)
+#define TO_DW0_ENDPOINT(x) (((u32) x) << 31)
+/* DW1 */
+#define TO_DW1_DEVICE_ADDR(x) (((u32) x) << 3)
+#define TO_DW1_PID_TOKEN(x) (((u32) x) << 10)
+#define DW1_TRANS_BULK ((u32) 2 << 12)
+#define DW1_TRANS_INT ((u32) 3 << 12)
+#define DW1_TRANS_SPLIT ((u32) 1 << 14)
+#define DW1_SE_USB_LOSPEED ((u32) 2 << 16)
+#define TO_DW1_PORT_NUM(x) (((u32) x) << 18)
+#define TO_DW1_HUB_NUM(x) (((u32) x) << 25)
+/* DW2 */
+#define TO_DW2_DATA_START_ADDR(x) (((u32) x) << 8)
+#define TO_DW2_RL(x) ((x) << 25)
+#define FROM_DW2_RL(x) (((x) >> 25) & 0xf)
+/* DW3 */
+#define FROM_DW3_NRBYTESTRANSFERRED(x) ((x) & 0x7fff)
+#define FROM_DW3_SCS_NRBYTESTRANSFERRED(x) ((x) & 0x07ff)
+#define TO_DW3_NAKCOUNT(x) ((x) << 19)
+#define FROM_DW3_NAKCOUNT(x) (((x) >> 19) & 0xf)
+#define TO_DW3_CERR(x) ((x) << 23)
+#define FROM_DW3_CERR(x) (((x) >> 23) & 0x3)
+#define TO_DW3_DATA_TOGGLE(x) ((x) << 25)
+#define FROM_DW3_DATA_TOGGLE(x) (((x) >> 25) & 0x1)
+#define TO_DW3_PING(x) ((x) << 26)
+#define FROM_DW3_PING(x) (((x) >> 26) & 0x1)
+#define DW3_ERROR_BIT (1 << 28)
+#define DW3_BABBLE_BIT (1 << 29)
+#define DW3_HALT_BIT (1 << 30)
+#define DW3_ACTIVE_BIT (1 << 31)
+#define FROM_DW3_ACTIVE(x) (((x) >> 31) & 0x01)
+
+#define INT_UNDERRUN (1 << 2)
+#define INT_BABBLE (1 << 1)
+#define INT_EXACT (1 << 0)
+
+#define SETUP_PID (2)
+#define IN_PID (1)
+#define OUT_PID (0)
+
+/* Errata 1 */
+#define RL_COUNTER (0)
+#define NAK_COUNTER (0)
+#define ERR_COUNTER (2)
struct isp1760_qtd {
u8 packet_type;
*/
static u32 reg_read32(void __iomem *base, u32 reg)
{
- return readl(base + reg);
+ return isp1760_read32(base, reg);
}
static void reg_write32(void __iomem *base, u32 reg, u32 val)
{
- writel(val, base + reg);
+ isp1760_write32(base, reg, val);
}
/*
int result;
u32 scratch, hwmode;
- /* low-level chip reset */
- if (gpio_is_valid(priv->rst_gpio)) {
- unsigned int rst_lvl;
-
- rst_lvl = (priv->devflags &
- ISP1760_FLAG_RESET_ACTIVE_HIGH) ? 1 : 0;
-
- gpio_set_value(priv->rst_gpio, rst_lvl);
- mdelay(50);
- gpio_set_value(priv->rst_gpio, !rst_lvl);
- }
-
- /* Setup HW Mode Control: This assumes a level active-low interrupt */
- hwmode = HW_DATA_BUS_32BIT;
-
- if (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16)
- hwmode &= ~HW_DATA_BUS_32BIT;
- if (priv->devflags & ISP1760_FLAG_ANALOG_OC)
- hwmode |= HW_ANA_DIGI_OC;
- if (priv->devflags & ISP1760_FLAG_DACK_POL_HIGH)
- hwmode |= HW_DACK_POL_HIGH;
- if (priv->devflags & ISP1760_FLAG_DREQ_POL_HIGH)
- hwmode |= HW_DREQ_POL_HIGH;
- if (priv->devflags & ISP1760_FLAG_INTR_POL_HIGH)
- hwmode |= HW_INTR_HIGH_ACT;
- if (priv->devflags & ISP1760_FLAG_INTR_EDGE_TRIG)
- hwmode |= HW_INTR_EDGE_TRIG;
-
- /*
- * We have to set this first in case we're in 16-bit mode.
- * Write it twice to ensure correct upper bits if switching
- * to 16-bit mode.
- */
- reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode);
- reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode);
-
reg_write32(hcd->regs, HC_SCRATCH_REG, 0xdeadbabe);
/* Change bus pattern */
scratch = reg_read32(hcd->regs, HC_CHIP_ID_REG);
return -ENODEV;
}
- /* pre reset */
+ /*
+ * The RESET_HC bit in the SW_RESET register is supposed to reset the
+ * host controller without touching the CPU interface registers, but at
+ * least on the ISP1761 it seems to behave as the RESET_ALL bit and
+ * reset the whole device. We thus can't use it here, so let's reset
+ * the host controller through the EHCI USB Command register. The device
+ * has been reset in core code anyway, so this shouldn't matter.
+ */
reg_write32(hcd->regs, HC_BUFFER_STATUS_REG, 0);
reg_write32(hcd->regs, HC_ATL_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE);
reg_write32(hcd->regs, HC_INT_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE);
reg_write32(hcd->regs, HC_ISO_PTD_SKIPMAP_REG, NO_TRANSFER_ACTIVE);
- /* reset */
- reg_write32(hcd->regs, HC_RESET_REG, SW_RESET_RESET_ALL);
- mdelay(100);
-
- reg_write32(hcd->regs, HC_RESET_REG, SW_RESET_RESET_HC);
- mdelay(100);
-
result = ehci_reset(hcd);
if (result)
return result;
/* Step 11 passed */
- dev_info(hcd->self.controller, "bus width: %d, oc: %s\n",
- (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16) ?
- 16 : 32, (priv->devflags & ISP1760_FLAG_ANALOG_OC) ?
- "analog" : "digital");
-
/* ATL reset */
+ hwmode = reg_read32(hcd->regs, HC_HW_MODE_CTRL) & ~ALL_ATX_RESET;
reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode | ALL_ATX_RESET);
mdelay(10);
reg_write32(hcd->regs, HC_HW_MODE_CTRL, hwmode);
reg_write32(hcd->regs, HC_INTERRUPT_ENABLE, INTERRUPT_ENABLE_MASK);
- /*
- * PORT 1 Control register of the ISP1760 is the OTG control
- * register on ISP1761. Since there is no OTG or device controller
- * support in this driver, we use port 1 as a "normal" USB host port on
- * both chips.
- */
- reg_write32(hcd->regs, HC_PORT1_CTRL, PORT1_POWER | PORT1_INIT2);
- mdelay(10);
-
priv->hcs_params = reg_read32(hcd->regs, HC_HCSPARAMS);
return priv_init(hcd);
}
static void start_bus_transfer(struct usb_hcd *hcd, u32 ptd_offset, int slot,
- struct slotinfo *slots, struct isp1760_qtd *qtd,
- struct isp1760_qh *qh, struct ptd *ptd)
+ struct isp1760_slotinfo *slots,
+ struct isp1760_qtd *qtd, struct isp1760_qh *qh,
+ struct ptd *ptd)
{
struct isp1760_hcd *priv = hcd_to_priv(hcd);
int skip_map;
{
struct isp1760_hcd *priv = hcd_to_priv(hcd);
int ptd_offset;
- struct slotinfo *slots;
+ struct isp1760_slotinfo *slots;
int curr_slot, free_slot;
int n;
struct ptd ptd;
struct isp1760_qh *qh;
int slot;
int state;
- struct slotinfo *slots;
+ struct isp1760_slotinfo *slots;
u32 ptd_offset;
struct isp1760_qtd *qtd;
int modified;
static const struct hc_driver isp1760_hc_driver = {
.description = "isp1760-hcd",
.product_desc = "NXP ISP1760 USB Host Controller",
- .hcd_priv_size = sizeof(struct isp1760_hcd),
+ .hcd_priv_size = sizeof(struct isp1760_hcd *),
.irq = isp1760_irq,
.flags = HCD_MEMORY | HCD_USB2,
.reset = isp1760_hc_setup,
.clear_tt_buffer_complete = isp1760_clear_tt_buffer_complete,
};
-int __init init_kmem_once(void)
+int __init isp1760_init_kmem_once(void)
{
urb_listitem_cachep = kmem_cache_create("isp1760_urb_listitem",
sizeof(struct urb_listitem), 0, SLAB_TEMPORARY |
return 0;
}
-void deinit_kmem_cache(void)
+void isp1760_deinit_kmem_cache(void)
{
kmem_cache_destroy(qtd_cachep);
kmem_cache_destroy(qh_cachep);
kmem_cache_destroy(urb_listitem_cachep);
}
-struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len,
- int irq, unsigned long irqflags,
- int rst_gpio,
- struct device *dev, const char *busname,
- unsigned int devflags)
+int isp1760_hcd_register(struct isp1760_hcd *priv, void __iomem *regs,
+ struct resource *mem, int irq, unsigned long irqflags,
+ struct device *dev)
{
struct usb_hcd *hcd;
- struct isp1760_hcd *priv;
int ret;
- if (usb_disabled())
- return ERR_PTR(-ENODEV);
-
- /* prevent usb-core allocating DMA pages */
- dev->dma_mask = NULL;
-
hcd = usb_create_hcd(&isp1760_hc_driver, dev, dev_name(dev));
if (!hcd)
- return ERR_PTR(-ENOMEM);
+ return -ENOMEM;
+
+ *(struct isp1760_hcd **)hcd->hcd_priv = priv;
+
+ priv->hcd = hcd;
- priv = hcd_to_priv(hcd);
- priv->devflags = devflags;
- priv->rst_gpio = rst_gpio;
init_memory(priv);
- hcd->regs = ioremap(res_start, res_len);
- if (!hcd->regs) {
- ret = -EIO;
- goto err_put;
- }
hcd->irq = irq;
- hcd->rsrc_start = res_start;
- hcd->rsrc_len = res_len;
+ hcd->regs = regs;
+ hcd->rsrc_start = mem->start;
+ hcd->rsrc_len = resource_size(mem);
ret = usb_add_hcd(hcd, irq, irqflags);
if (ret)
- goto err_unmap;
- device_wakeup_enable(hcd->self.controller);
+ goto error;
- return hcd;
-
-err_unmap:
- iounmap(hcd->regs);
+ device_wakeup_enable(hcd->self.controller);
-err_put:
- usb_put_hcd(hcd);
+ return 0;
- return ERR_PTR(ret);
+error:
+ usb_put_hcd(hcd);
+ return ret;
}
-MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP");
-MODULE_AUTHOR("Sebastian Siewior <bigeasy@linuxtronix.de>");
-MODULE_LICENSE("GPL v2");
+void isp1760_hcd_unregister(struct isp1760_hcd *priv)
+{
+ usb_remove_hcd(priv->hcd);
+ usb_put_hcd(priv->hcd);
+}
projects / cascardo / linux.git / blobdiff