Fix interrupt missing bug of PCIE Card with PCI bridge

Target: Bonito3a780e

Targets/Bonito3a780e/Bonito/tgt_machdep.c

@@ -2546,12 +2546,16 @@ PCI PIC [ 0 <-------->  3 ] INTA#
 
 
 #define SMBUS_IO_BASE	  0x0000  //ynn
+#define PCI_BRADGE_TOTAL  0x0001  //ynn
 
 void sb700_interrupt_fixup(void)
 {
 	unsigned char * pic_index = 0xb8000c00 + SMBUS_IO_BASE; 
 	unsigned char * pic_data =  0xb8000c01 + SMBUS_IO_BASE;
 	unsigned short * intr_contrl =  0xb80004d0 + SMBUS_IO_BASE;
+	unsigned short busnum;
+	unsigned short origin_busnum;
+
 	device_t dev,dev1;
 	u32 val;
 	u8 byte;
@@ -2682,8 +2686,16 @@ void sb700_interrupt_fixup(void)
 
 	// 1.fix up rte0: rourte 00:07:00 rte0: INTD-->IRQ5  
 	printf("\nrte0 fixup: rte ---------------> int5\n");
-	printf("xqch: SB700 device  route rte0: int5 \n");
+	printf("SB700 device  route rte0: int5 \n");
 	dev = _pci_make_tag(7, 0x0, 0x0);
+	val = pci_read_config32(dev, 0x00);
+	if ( val != 0xffffffff) // device on the slot
+	  pci_write_config8(dev, 0x3c, 0x05);
+
+	printf("SB700 device  route rte0: int5 \n");
+	dev = _pci_make_tag(8, 0x0, 0x0);
+	val = pci_read_config32(dev, 0x00);
+	if ( val != 0xffffffff) // device on the slot
 	  pci_write_config8(dev, 0x3c, 0x05);
 
 		//2.fixup sata int line
@@ -2779,10 +2791,10 @@ void sb700_interrupt_fixup(void)
 	/*8. pci/pcie slot fixup */
 	//8.1. route  00:06:00 (pcie slot) INTA->INTC# -----------------> int6
 	// First check if any device in the slot ( return -1 means no device, else there is device ) 
-	//dev = _pci_make_tag(6, 0x0, 0x0);
-	//val = pci_read_config32(dev, 0x00);
-	//if ( val != 0xffffffff) // device on the slot
-	  //pci_write_config8(dev, 0x3c, 0x06);
+	dev = _pci_make_tag(6, 0x0, 0x0); //added to fixup pci bridge card
+	val = pci_read_config32(dev, 0x00);
+	if ( val != 0xffffffff) // device on the slot
+	  pci_write_config8(dev, 0x3c, 0x03);
 
 	// 8.2 route  00:05:00 (pcie slot) INTA->INTB# -----------------> int3 
 	// First check if any device in the slot ( return -1 means no device, else there is device ) 
@@ -2800,16 +2812,28 @@ void sb700_interrupt_fixup(void)
 
 	// 9. route 00:0a:00  (pci slot: con20 and con19)
 	// 9.1  route 0a:05:00 (con19 with add_19) INTA->INTC --> INTG# ---------------------> int5
-	dev = _pci_make_tag(0xa, 0x5, 0x0);
+	// NOTICE here: now assume dev 2, dev3 and dev 4 are all enable on x16 pcie slot, but 
+	// in fact only one dev need to be enable. If only one device is enable, all code in this function
+   // need to be update (that means bus number should minus 2, and interrupt need to be routed again),
+	// But at this moment, don't care this "bug".
+
+	// At most "PCI_BRADGE_TOTAL"  pci bridge is support before bus "origin_busnum" is scaned, 
+	// now begin probing pci slot... 
+
+	origin_busnum = 0xa;
+	for ( busnum = origin_busnum; busnum <= PCI_BRADGE_TOTAL + origin_busnum ; busnum++)
+	{
+	  dev = _pci_make_tag(busnum, 0x5, 0x0);
 	  val = pci_read_config32(dev, 0x00);
 	  if ( val != 0xffffffff) // device on the slot
 		pci_write_config8(dev, 0x3c, 0x5);// 0x14 means set interrupt pin to be 1, use interrupt line 0x4
 
 	  // 9.2  route 0a:04:00 (con20 with add_20) INTA->INTB --> INTF## ---------------------> int5
-	dev = _pci_make_tag(0xa, 0x4, 0x0);
+	  dev = _pci_make_tag(busnum, 0x4, 0x0);
 	  val = pci_read_config32(dev, 0x00);
 	  if ( val != 0xffffffff) // device on the slot
 		pci_write_config8(dev, 0x3c, 0x05);// 0x14 means set interrupt pin to be 1, use interrupt line 0x4
+	}