as3525v2: add partial usb init code

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26157 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 282 insertions, 12 deletions

diff --git a/firmware/target/arm/as3525/usb-drv-as3525v2.c b/firmware/target/arm/as3525/usb-drv-as3525v2.c
index 83a5701a11..369a838c65 100644
--- a/firmware/target/arm/as3525/usb-drv-as3525v2.c
+++ b/firmware/target/arm/as3525/usb-drv-as3525v2.c
@@ -48,6 +48,9 @@ struct usb_endpoint
 static struct usb_endpoint endpoints[USB_NUM_ENDPOINTS*2];
 #endif
 
+static unsigned int usb_num_in_ep = 0;
+static unsigned int usb_num_out_ep = 0;
+
 void usb_attach(void)
 {
     usb_enable(true);
@@ -102,6 +105,51 @@ static void as3525v2_connect(void)
     usb_delay();
 }
 
+static void usb_enable_common_interrupts(void)
+{
+    /* Clear any pending otg interrupt */
+    USB_GOTGINT = 0xffffffff;
+    /* Clear any pending interrupt */
+    USB_GINTSTS = 0Xffffffff;
+    /* Enable interrupts */
+    USB_GINTMSK |= USB_GINTMSK_modemismatch |
+                    USB_GINTMSK_otgintr |
+                    USB_GINTMSK_rxstsqlvl | /* for dma */
+                    USB_GINTMSK_conidstschng |
+                    USB_GINTMSK_wkupintr |
+                    USB_GINTMSK_disconnect |
+                    USB_GINTMSK_usbsuspend |
+                    USB_GINTMSK_sessreqintr;
+}
+
+static void usb_flush_tx_fifos(int nums)
+{
+    unsigned int i = 0;
+    
+    USB_GRSTCTL = (USB_GRSTCTL & (~USB_GRSTCTL_txfnum_bits))
+        | (nums << USB_GRSTCTL_txfnum_bit_pos)
+        | USB_GRSTCTL_txfflsh_flush;
+    while(USB_GRSTCTL & USB_GRSTCTL_txfflsh_flush && i < 0x300)
+        i++;
+    if(USB_GRSTCTL & USB_GRSTCTL_txfflsh_flush)
+        panicf("usb: hang of flush tx fifos (%x)", nums);
+    /* wait 3 phy clocks */
+    sleep(1);
+}
+
+static void usb_flush_rx_fifo(void)
+{
+    unsigned int i = 0;
+    
+    USB_GRSTCTL |= USB_GRSTCTL_rxfflsh_flush;
+    while(USB_GRSTCTL & USB_GRSTCTL_rxfflsh_flush && i < 0x300)
+        i++;
+    if(USB_GRSTCTL & USB_GRSTCTL_rxfflsh_flush)
+        panicf("usb: hang of flush rx fifo");
+    /* wait 3 phy clocks */
+    sleep(1);
+}
+
 static void core_reset(void)
 {
     unsigned int i = 0;
@@ -118,26 +166,137 @@ static void core_reset(void)
         i++;
 
     if(USB_GRSTCTL & USB_GRSTCTL_csftrst)
-    {
-        logf("oops, usb core soft reset hang :(");
-    }
+        panicf("oops, usb core soft reset hang :(");
 
     /* Wait for 3 PHY Clocks */
     /*mdelay(100);*/
     sleep(1);
 
-    logf("%ld endpoints", USB_GHWCFG2_NUM_EP);
-    for(i = 0; i < USB_GHWCFG2_NUM_EP; i++)
-        logf("  EP%d: IN=%ld OUT=%ld", i, USB_GHWCFG1_IN_EP(i), USB_GHWCFG1_OUT_EP(i));
+    /* Check hardware capabilityies */
+    if(USB_GHWCFG2_ARCH != USB_INT_DMA_ARCH)
+        panicf("usb: wrong architecture (%ld)", USB_GHWCFG2_ARCH);
+    if(USB_GHWCFG2_HS_PHY_TYPE != USB_PHY_TYPE_UTMI)
+        panicf("usb: wrong HS phy type (%ld)", USB_GHWCFG2_HS_PHY_TYPE);
+    if(USB_GHWCFG2_FS_PHY_TYPE != USB_PHY_TYPE_UNSUPPORTED)
+        panicf("usb: wrong FS phy type (%ld)", USB_GHWCFG2_FS_PHY_TYPE);
+    if(USB_GHWCFG2_DYN_FIFO != 1)
+        panicf("usb: no dynamic fifo");
+    if(USB_GHWCFG4_UTMI_PHY_DATA_WIDTH != 0x2)
+        panicf("usb: wrong utmi data width (%ld)", USB_GHWCFG4_UTMI_PHY_DATA_WIDTH);
+    if(USB_GHWCFG4_DED_FIFO_EN != 1) /* it seems to be multiple tx fifo support */
+        panicf("usb: no multiple tx fifo");
+
     logf("hwcfg1: %08lx", USB_GHWCFG1);
     logf("hwcfg2: %08lx", USB_GHWCFG2);
     logf("hwcfg3: %08lx", USB_GHWCFG3);
     logf("hwcfg4: %08lx", USB_GHWCFG4);
 
-    logf("%ld in ep", USB_GHWCFG4_NUM_IN_EP);
-    logf("tot fifo sz: %ld", USB_GHWCFG3_DFIFO_LEN);
-    logf("rx fifo sz: %ld", USB_GRXFSIZ);
-    logf("tx fifo sz: %ld", USB_GNPTXFSIZ >> 16); /* there is no perio ep so print only non-perio */
+    logf("%ld endpoints", USB_GHWCFG2_NUM_EP);
+    usb_num_in_ep = 0;
+    usb_num_out_ep = 0;
+    for(i = 0; i < USB_GHWCFG2_NUM_EP; i++)
+    {
+        if(USB_GHWCFG1_IN_EP(i))
+            usb_num_in_ep++;
+        if(USB_GHWCFG1_OUT_EP(i))
+            usb_num_out_ep++;
+        logf("  EP%d: IN=%ld OUT=%ld", i, USB_GHWCFG1_IN_EP(i), USB_GHWCFG1_OUT_EP(i));
+    }
+
+    if(usb_num_in_ep != USB_GHWCFG4_NUM_IN_EP)
+        panicf("usb: num in ep mismatch(%d,%lu)", usb_num_in_ep, USB_GHWCFG4_NUM_IN_EP);
+
+    logf("%d in ep, %d out ep", usb_num_in_ep, usb_num_out_ep);
+    logf("initial:");
+    logf("  tot fifo sz: %ld", USB_GHWCFG3_DFIFO_LEN);
+    logf("  rx fifo sz: %ld", USB_GRXFSIZ);
+    logf("  tx fifo sz: %ld", USB_GET_FIFOSIZE_DEPTH(USB_GNPTXFSIZ)); /* there is no perio ep so print only non-perio */
+    for(i = 1; i <= USB_GHWCFG4_NUM_IN_EP; i++)
+    {
+        logf("  dieptx fifo sd (%2u): %ld", i, USB_GET_FIFOSIZE_DEPTH(USB_DIEPTXFSIZ(i)));
+    }
+
+    /* Setup FIFOs */
+    /* Organize FIFO as follow (unsure):
+     *             0           ->         rxfsize         : RX fifo
+     *          rxfsize        ->   rxfsize + nptxfsize   : TX fifo for first IN ep
+     *   rxfsize + nptxfsize   -> rxfsize + 2 * nptxfsize : TX fifo for second IN ep
+     * rxfsize + 2 * nptxfsize -> rxfsize + 3 * nptxfsize : TX fifo for third IN ep
+     * ...
+     */
+
+    unsigned short adr = USB_GRXFSIZ;
+    unsigned short depth = USB_GET_FIFOSIZE_DEPTH(USB_GNPTXFSIZ);
+    USB_GNPTXFSIZ = USB_MAKE_FIFOSIZE_DATA(adr, depth);
+    adr += depth;
+
+    for(i = 1; i <= USB_GHWCFG4_NUM_IN_EP; i++)
+    {
+        depth = USB_GET_FIFOSIZE_DEPTH(USB_DIEPTXFSIZ(i));
+        USB_DIEPTXFSIZ(i) = USB_MAKE_FIFOSIZE_DATA(adr, depth);
+        adr += depth;
+    }
+
+    logf("used:");
+    logf("  rx fifo: [%04x,+%4lx]", 0, USB_GRXFSIZ);
+    logf("  nptx fifo: [%04lx,+%4lx]", USB_GET_FIFOSIZE_START_ADR(USB_GNPTXFSIZ),
+        USB_GET_FIFOSIZE_DEPTH(USB_GNPTXFSIZ));
+    for(i = 1; i <= USB_GHWCFG4_NUM_IN_EP; i++)
+    {
+        logf("  dieptx fifo(%2u): [%04lx,+%4lx]", i,
+            USB_GET_FIFOSIZE_START_ADR(USB_DIEPTXFSIZ(i)),
+            USB_GET_FIFOSIZE_DEPTH(USB_DIEPTXFSIZ(i)));
+    }
+
+    /* flush the fifos */
+    usb_flush_tx_fifos(0x10); /* flush all */
+    usb_flush_rx_fifo();
+
+    /* flush learning queue */
+    USB_GRSTCTL |= USB_GRSTCTL_intknqflsh;
+
+    /* Clear all pending device interrupts */
+    USB_DIEPMSK = 0;
+    USB_DOEPMSK = 0;
+    USB_DAINT = 0xffffffff;
+    USB_DAINTMSK = 0;
+
+    for(i = 0; i <= usb_num_in_ep; i++)
+    {
+        /* disable endpoint if enabled */
+        if(USB_DIEPCTL(i) & USB_DEPCTL_epena)
+            USB_DIEPCTL(i) = USB_DEPCTL_epdis | USB_DEPCTL_snak;
+        else
+            USB_DIEPCTL(i) = 0;
+
+        USB_DIEPTSIZ(i) = 0;
+        USB_DIEPDMA(i) = 0;
+        USB_DIEPINT(i) = 0xff;
+    }
+
+    for(i = 0; i <= usb_num_out_ep; i++)
+    {
+        /* disable endpoint if enabled */
+        if(USB_DOEPCTL(i) & USB_DEPCTL_epena)
+            USB_DOEPCTL(i) = USB_DEPCTL_epdis | USB_DEPCTL_snak;
+        else
+            USB_DOEPCTL(i) = 0;
+
+        USB_DOEPTSIZ(i) = 0;
+        USB_DOEPDMA(i) = 0;
+        USB_DOEPINT(i) = 0xff;
+    }
+}
+
+static void core_dev_init(void)
+{
+    /* Restart the phy clock */
+    USB_PCGCCTL = 0;
+    /* Set phy speed : high speed */
+    USB_DCFG = (USB_DCFG & (~USB_DCFG_devspd_bits)) | USB_DCFG_devspd_hs_phy_hs;
+    /* Set periodic frame interval */
+    USB_DCFG = (USB_DCFG & (~USB_DCFG_perfrint_bits)) | (USB_DCFG_FRAME_INTERVAL_80 << USB_DCFG_perfrint_bit_pos);
+    /* Configure data fifo size */
 }
 
 static void core_init(void)
@@ -169,6 +328,12 @@ static void core_init(void)
     USB_GAHBCFG |= USB_GAHBCFG_dma_enable;
     /* Disable HNP and SRP, not sure it's useful because we already forced dev mode */
     USB_GUSBCFG &= ~(USB_GUSBCFG_SRP_cap | USB_GUSBCFG_HNP_cap);
+
+    /* enable basic interrupts */
+    usb_enable_common_interrupts();
+
+    /* perform device model specific init */
+    core_dev_init();
 }
 
 void usb_drv_init(void)
diff --git a/firmware/target/arm/as3525/usb-drv-as3525v2.h b/firmware/target/arm/as3525/usb-drv-as3525v2.h
index 4abbdb7dc2..ce132ad7b5 100644
--- a/firmware/target/arm/as3525/usb-drv-as3525v2.h
+++ b/firmware/target/arm/as3525/usb-drv-as3525v2.h
@@ -50,19 +50,47 @@
 #define USB_GHWCFG3     (*(volatile unsigned long *)(USB_BASE + 0x04C)) /** User HW Config3 Register */
 #define USB_GHWCFG4     (*(volatile unsigned long *)(USB_BASE + 0x050)) /** User HW Config4 Register */
 
+/* 1<=ep<=15, don't use ep=0 !!! */
+/** Device IN Endpoint Transmit FIFO (ep) Size Register */
+#define USB_DIEPTXFSIZ(ep)  (*(volatile unsigned long *)(USB_BASE + 0x100 + 4 * (ep)))
+
+#define USB_MAKE_FIFOSIZE_DATA(startadr, depth) \
+    (((startadr) & 0xffff) | ((depth) << 16))
+
+#define USB_GET_FIFOSIZE_DEPTH(data) \
+    ((data) >> 16)
+
+#define USB_GET_FIFOSIZE_START_ADR(data) \
+    ((data) & 0xffff)
+
 #define USB_GRSTCTL_csftrst                 (1 << 0) /** Core soft reset */
 #define USB_GRSTCTL_hsftrst                 (1 << 1) /** Hclk soft reset */
+#define USB_GRSTCTL_intknqflsh              (1 << 3) /** In Token Sequence Learning Queue Flush */
+#define USB_GRSTCTL_txfnum_bit_pos          6 /** TxFIFO Number */
+#define USB_GRSTCTL_txfnum_bits             (0x1f << 6)
+#define USB_GRSTCTL_txfflsh_flush           (1 << 5) /** TxFIFO Flush */
+#define USB_GRSTCTL_rxfflsh_flush           (1 << 4) /** RxFIFO Flush */
 #define USB_GRSTCTL_ahbidle                 (1 << 31) /** AHB idle state*/
 
 #define USB_GHWCFG1_IN_EP(ep)               ((USB_GHWCFG1 >> ((ep) *2)) & 0x1) /** 1 if EP(ep) has in cap */
 #define USB_GHWCFG1_OUT_EP(ep)              ((USB_GHWCFG1 >> ((ep) *2 + 1)) & 0x1)/** 1 if EP(ep) has out cap */
 
+#define USB_GHWCFG2_ARCH                    ((USB_GHWCFG2 >> 3) & 0x3) /** Architecture */
+#define USB_GHWCFG2_HS_PHY_TYPE             ((USB_GHWCFG2 >> 6) & 0x3) /** High speed PHY type */
+#define USB_GHWCFG2_FS_PHY_TYPE             ((USB_GHWCFG2 >> 8) & 0x3) /** Full speed PHY type */
+#define USB_GHWCFG2_NUM_EP                  ((USB_GHWCFG2 >> 10) & 0xf) /** Number of endpoints */
+#define USB_GHWCFG2_DYN_FIFO                ((USB_GHWCFG2 >> 19) & 0x1) /** Dynamic FIFO */
+
+#define USB_PHY_TYPE_UNSUPPORTED            0
+#define USB_PHY_TYPE_UTMI                   1
+#define USB_INT_DMA_ARCH                    2
+
 #define USB_GHWCFG3_DFIFO_LEN               (USB_GHWCFG3 >> 16) /** Total fifo size */
 
+#define USB_GHWCFG4_UTMI_PHY_DATA_WIDTH     ((USB_GHWCFG4 >> 14) & 0x3)
+#define USB_GHWCFG4_DED_FIFO_EN             ((USB_GHWCFG4 >> 25) & 0x1)
 #define USB_GHWCFG4_NUM_IN_EP               ((USB_GHWCFG4 >> 26) & 0xf) /** Number of IN endpoints */
 
-#define USB_GHWCFG2_NUM_EP                  ((USB_GHWCFG2 >> 10) & 0xf) /** Number of endpoints */
-
 #define USB_GUSBCFG_ulpi_utmi_sel           (1 << 4) /** select ulpi:1 or utmi:0 */
 #define USB_GUSBCFG_phy_if                  (1 << 3) /** select utmi bus width ? */
 #define USB_GUSBCFG_SRP_cap                 0x100
@@ -72,6 +100,40 @@
 #define USB_GAHBCFG_INT_DMA_BURST_INCR      1 /** note: the linux patch has several other value, this is one picked for internal dma */
 #define USB_GAHBCFG_dma_enable              (1 << 5)
 
+#define USB_GINTMSK_usb_rst                 0x00001000   /*!< USB Reset Mask */
+#define USB_GINTMSK_EnumDone                0x00000200   /*!< Enumeration Done Mask */
+#define USB_GINTMSK_ErlySusp                0x00000400   /*!< Early Suspend Mask */
+#define USB_GINTMSK_USBSusp                 0x00000800   /*!< USB Suspend Mask */
+#define USB_GINTMSK_SOF                     0x00000008   /*!< Start of (micro)Frame Mask */
+#define USB_GINTMSK_NPTxFEmp                0x00000020   /*!< Non-periodic TxFIFO Empty Mask */
+
+#define USB_GINTMSK_wkupintr                (1 << 31)
+#define USB_GINTMSK_sessreqintr             (1 << 30)
+#define USB_GINTMSK_disconnect              (1 << 29)
+#define USB_GINTMSK_conidstschng            (1 << 28)
+#define USB_GINTMSK_ptxfempty               (1 << 26)
+#define USB_GINTMSK_hcintr                  (1 << 25)
+#define USB_GINTMSK_portintr                (1 << 24)
+#define USB_GINTMSK_incomplisoout           (1 << 21)
+#define USB_GINTMSK_incomplisoin            (1 << 20)
+#define USB_GINTMSK_outepintr               (1 << 19)
+#define USB_GINTMSK_inepintr                (1 << 18)
+#define USB_GINTMSK_epmismatch              (1 << 17)
+#define USB_GINTMSK_eopframe                (1 << 15)
+#define USB_GINTMSK_isooutdrop              (1 << 14)
+#define USB_GINTMSK_enumdone                (1 << 13)
+#define USB_GINTMSK_usbreset                (1 << 12)
+#define USB_GINTMSK_usbsuspend              (1 << 11)
+#define USB_GINTMSK_erlysuspend             (1 << 10)
+#define USB_GINTMSK_i2cintr                 (1 << 9)
+#define USB_GINTMSK_goutnakeff              (1 << 7)
+#define USB_GINTMSK_ginnakeff               (1 << 6)
+#define USB_GINTMSK_nptxfempty              (1 << 5)
+#define USB_GINTMSK_rxstsqlvl               (1 << 4)
+#define USB_GINTMSK_sofintr                 (1 << 3)
+#define USB_GINTMSK_otgintr                 (1 << 2)
+#define USB_GINTMSK_modemismatch            (1 << 1)
+
 /**
  * Device Registers Base Addresses
  */
@@ -86,6 +148,49 @@
 #define USB_DTKNQR2     (*(volatile unsigned long *)(USB_DEVICE + 0x24)) /** Device IN Token Sequence Learning Queue Register 2 */
 #define USB_DTKNQP      (*(volatile unsigned long *)(USB_DEVICE + 0x28)) /** Device IN Token Queue Pop register */
 
+#define USB_DCFG_devspd_bits                0x3
+#define USB_DCFG_devspd_hs_phy_hs           0 /** High speed PHY running at high speed */
+#define USB_DCFG_devspd_hs_phy_fs           1 /** High speed PHY running at full speed */
+#define USB_DCFG_perfrint_bit_pos           11 /** Periodic Frame Interval */
+#define USB_DCFG_perfrint_bits              (0x3 << USB_DCFG_perfrint_bit_pos)
+#define USB_DCFG_FRAME_INTERVAL_80          0
+#define USB_DCFG_FRAME_INTERVAL_85          1
+#define USB_DCFG_FRAME_INTERVAL_90          2
+#define USB_DCFG_FRAME_INTERVAL_95          3
+
+/* 0<=ep<=15, you can use ep=0 */
+/** Device IN Endpoint (ep) Control Register */
+#define USB_DIEPCTL(ep)     (*(volatile unsigned long *)(USB_DEVICE + 0x100 + (ep) * 0x20))
+/** Device IN Endpoint (ep) Interrupt Register */
+#define USB_DIEPINT(ep)     (*(volatile unsigned long *)(USB_DEVICE + 0x100 + (ep) * 0x20 + 0x8))
+/** Device IN Endpoint (ep) Transfer Size Register */
+#define USB_DIEPTSIZ(ep)    (*(volatile unsigned long *)(USB_DEVICE + 0x100 + (ep) * 0x20 + 0x10))
+/** Device IN Endpoint (ep) DMA Address Register */
+#define USB_DIEPDMA(ep)     (*(volatile unsigned long *)(USB_DEVICE + 0x100 + (ep) * 0x20 + 0x14))
+/** Device IN Endpoint (ep) Transmit FIFO Status Register */
+#define USB_DTXFSTS(ep)     (*(volatile unsigned long *)(USB_DEVICE + 0x100 + (ep) * 0x20 + 0x18))
+
+/** Device OUT Endpoint (ep) Control Register */
+#define USB_DOEPCTL(ep)     (*(volatile unsigned long *)(USB_DEVICE + 0x300 + (ep) * 0x20))
+/** Device OUT Endpoint (ep) Frame number Register */
+#define USB_DOEPFN(ep)      (*(volatile unsigned long *)(USB_DEVICE + 0x300 + (ep) * 0x20 + 0x4))
+/** Device Endpoint (ep) Interrupt Register */
+#define USB_DOEPINT(ep)     (*(volatile unsigned long *)(USB_DEVICE + 0x300 + (ep) * 0x20 + 0x8))
+/** Device OUT Endpoint (ep) Transfer Size Register */
+#define USB_DOEPTSIZ(ep)    (*(volatile unsigned long *)(USB_DEVICE + 0x300 + (ep) * 0x20 + 0x10))
+/** Device Endpoint (ep) DMA Address Register */
+#define USB_DOEPDMA(ep)     (*(volatile unsigned long *)(USB_DEVICE + 0x300 + (ep) * 0x20 + 0x14))
+
 #define USB_PCGCCTL     (*(volatile unsigned long *)(USB_BASE + 0xE00)) /** Power and Clock Gating Control Register */
 
+#define USB_DEPCTL_epena        (1 << 31) /** Endpoint enable */
+#define USB_DEPCTL_epdis        (1 << 30) /** Endpoint disable */
+#define USB_DEPCTL_snak         (1 << 27) /** Set NAK */
+#define USB_DEPCTL_cnak         (1 << 28) /** Clear NAK */
+
+/**
+ * Parameters
+ */
+
+
 #endif /* __USB_DRV_AS3525v2_H__ */