TQM8548: PCI express support

This patch adds support for PCI express cards. The board support
now uses common FSL PCI init code, for both, PCI and PCIe on all
TQM85xx modules.

Signed-off-by: Thomas Waehner <thomas.waehner@tqs.de>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>

1 files changed, 174 insertions, 31 deletions

diff --git a/board/tqc/tqm85xx/tqm85xx.c b/board/tqc/tqm85xx/tqm85xx.c
index f96cec3..f1c2e58 100644
--- a/board/tqc/tqm85xx/tqm85xx.c
+++ b/board/tqc/tqm85xx/tqm85xx.c
@@ -36,6 +36,7 @@
 #include <pci.h>
 #include <asm/processor.h>
 #include <asm/immap_85xx.h>
+#include <asm/immap_fsl_pci.h>
 #include <asm/io.h>
 #include <ioports.h>
 #include <flash.h>
@@ -257,13 +258,6 @@ int checkboard (void)
 	}
 	putc ('\n');
 
-#ifdef CONFIG_PCI
-	printf ("PCI1:  32 bit, %d MHz (compiled)\n",
-		CONFIG_SYS_CLK_FREQ / 1000000);
-#else
-	printf ("PCI1:  disabled\n");
-#endif
-
 	/*
 	 * Initialize local bus.
 	 */
@@ -537,38 +531,180 @@ void local_bus_init (void)
 #endif /* CONFIG_CAN_DRIVER */
 }
 
-#if defined(CONFIG_PCI)
 /*
  * Initialize PCI Devices, report devices found.
  */
+static int first_free_busno;
 
-#ifndef CONFIG_PCI_PNP
-static struct pci_config_table pci_mpc85xxads_config_table[] = {
-	{PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
-	 PCI_IDSEL_NUMBER, PCI_ANY_ID,
-	 pci_cfgfunc_config_device, {PCI_ENET0_IOADDR,
-				     PCI_ENET0_MEMADDR,
-				     PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER}},
-	{}
-};
-#endif
+#if defined(CONFIG_PCI) || defined(CONFIG_PCI1)
+static struct pci_controller pci1_hose;
+#endif /* CONFIG_PCI || CONFIG_PCI1 */
 
-static struct pci_controller hose = {
-#ifndef CONFIG_PCI_PNP
-      config_table:pci_mpc85xxads_config_table,
+#ifdef CONFIG_PCIE1
+static struct pci_controller pcie1_hose;
+#endif /* CONFIG_PCIE1 */
+
+static inline void init_pci1(void)
+{
+	volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
+#if defined(CONFIG_PCI) || defined(CONFIG_PCI1)
+	uint host_agent = (gur->porbmsr & MPC85xx_PORBMSR_HA) >> 16;
+	volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *)CFG_PCI1_ADDR;
+	extern void fsl_pci_init(struct pci_controller *hose);
+	struct pci_controller *hose = &pci1_hose;
+
+	/* PORDEVSR[15] */
+	uint pci_32 = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_PCI32;
+	/* PORDEVSR[14] */
+	uint pci_arb = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;
+	/* PORPLLSR[16] */
+	uint pci_clk_sel = gur->porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;
+
+	uint pci_agent = (host_agent == 3) || (host_agent == 4 ) ||
+		(host_agent == 6);
+
+	uint pci_speed = CONFIG_SYS_CLK_FREQ;	/* PCI PSPEED in [4:5] */
+
+	if (!(gur->devdisr & MPC85xx_DEVDISR_PCI1)) {
+		printf ("PCI1:  %d bit, %s MHz, %s, %s, %s\n",
+			(pci_32) ? 32 : 64,
+			(pci_speed == 33333333) ? "33" :
+			(pci_speed == 66666666) ? "66" : "unknown",
+			pci_clk_sel ? "sync" : "async",
+			pci_agent ? "agent" : "host",
+			pci_arb ? "arbiter" : "external-arbiter");
+
+
+		/* inbound */
+		pci_set_region (hose->regions + 0,
+				CFG_PCI_MEMORY_BUS,
+				CFG_PCI_MEMORY_PHYS,
+				CFG_PCI_MEMORY_SIZE,
+				PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+
+		/* outbound memory */
+		pci_set_region (hose->regions + 1,
+				CFG_PCI1_MEM_BASE,
+				CFG_PCI1_MEM_PHYS,
+				CFG_PCI1_MEM_SIZE,
+				PCI_REGION_MEM);
+
+		/* outbound io */
+		pci_set_region (hose->regions + 2,
+				CFG_PCI1_IO_BASE,
+				CFG_PCI1_IO_PHYS,
+				CFG_PCI1_IO_SIZE,
+				PCI_REGION_IO);
+
+		hose->region_count = 3;
+
+		hose->first_busno = first_free_busno;
+		pci_setup_indirect (hose, (int)&pci->cfg_addr,
+				    (int)&pci->cfg_data);
+
+		fsl_pci_init (hose);
+
+		printf ("       PCI on bus %02x..%02x\n",
+			hose->first_busno, hose->last_busno);
+
+		first_free_busno = hose->last_busno + 1;
+#ifdef CONFIG_PCIX_CHECK
+		if (!(gur->pordevsr & PORDEVSR_PCI)) {
+			ushort reg16 =
+				PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ |
+				PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;
+			uint dev = PCI_BDF(hose->first_busno, 0, 0);
+
+			/* PCI-X init */
+			if (CONFIG_SYS_CLK_FREQ < 66000000)
+				puts ("PCI-X will only work at 66 MHz\n");
+
+			pci_hose_write_config_word (hose, dev, PCIX_COMMAND,
+						    reg16);
+		}
 #endif
-};
+	} else {
+		puts ("PCI1:  disabled\n");
+	}
+#else /* !(CONFIG_PCI || CONFIG_PCI1) */
+	gur->devdisr |= MPC85xx_DEVDISR_PCI1; /* disable */
+#endif /* CONFIG_PCI || CONFIG_PCI1) */
+}
+
+static inline void init_pcie1(void)
+{
+	volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
+#ifdef CONFIG_PCIE1
+	uint io_sel = (gur->pordevsr & MPC85xx_PORDEVSR_IO_SEL) >> 19;
+	uint host_agent = (gur->porbmsr & MPC85xx_PORBMSR_HA) >> 16;
+	volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *)CFG_PCIE1_ADDR;
+	extern void fsl_pci_init(struct pci_controller *hose);
+	struct pci_controller *hose = &pcie1_hose;
+	int pcie_ep =  (host_agent == 0) || (host_agent == 2 ) ||
+		(host_agent == 3);
+
+	int pcie_configured  = io_sel >= 1;
+
+	if (pcie_configured && !(gur->devdisr & MPC85xx_DEVDISR_PCIE)){
+		printf ("PCIe:  %s, base address %x",
+			pcie_ep ? "End point" : "Root complex", (uint)pci);
+
+		if (pci->pme_msg_det) {
+			pci->pme_msg_det = 0xffffffff;
+			debug (", with errors. Clearing. Now 0x%08x",
+			       pci->pme_msg_det);
+		}
+		puts ("\n");
 
-#endif /* CONFIG_PCI */
+		/* inbound */
+		pci_set_region (hose->regions + 0,
+				CFG_PCI_MEMORY_BUS,
+				CFG_PCI_MEMORY_PHYS,
+				CFG_PCI_MEMORY_SIZE,
+				PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+		/* outbound memory */
+		pci_set_region (hose->regions + 1,
+				CFG_PCIE1_MEM_BASE,
+				CFG_PCIE1_MEM_PHYS,
+				CFG_PCIE1_MEM_SIZE,
+				PCI_REGION_MEM);
+
+		/* outbound io */
+		pci_set_region (hose->regions + 2,
+				CFG_PCIE1_IO_BASE,
+				CFG_PCIE1_IO_PHYS,
+				CFG_PCIE1_IO_SIZE,
+				PCI_REGION_IO);
+
+		hose->region_count = 3;
+
+		hose->first_busno = first_free_busno;
+		pci_setup_indirect(hose, (int)&pci->cfg_addr,
+				   (int)&pci->cfg_data);
+
+		fsl_pci_init (hose);
+		printf ("       PCIe on bus %02x..%02x\n",
+			hose->first_busno, hose->last_busno);
+
+		first_free_busno = hose->last_busno + 1;
+
+	} else {
+		printf ("PCIe:  disabled\n");
+	}
+#else /* !CONFIG_PCIE1 */
+	gur->devdisr |= MPC85xx_DEVDISR_PCIE; /* disable */
+#endif /* CONFIG_PCIE1 */
+}
 
 void pci_init_board (void)
 {
-#ifdef CONFIG_PCI
-	pci_mpc85xx_init (&hose);
-#endif /* CONFIG_PCI */
+	init_pci1();
+	init_pcie1();
 }
 
-#if defined(CONFIG_OF_BOARD_SETUP)
+#ifdef CONFIG_OF_BOARD_SETUP
 void ft_board_setup (void *blob, bd_t *bd)
 {
 	int node, tmp[2];
@@ -579,16 +715,23 @@ void ft_board_setup (void *blob, bd_t *bd)
 	node = fdt_path_offset (blob, "/aliases");
 	tmp[0] = 0;
 	if (node >= 0) {
-#ifdef CONFIG_PCI
+#if defined(CONFIG_PCI) || defined(CONFIG_PCI1)
 		path = fdt_getprop (blob, node, "pci0", NULL);
 		if (path) {
-			tmp[1] = hose.last_busno - hose.first_busno;
+			tmp[1] = pci1_hose.last_busno - pci1_hose.first_busno;
 			do_fixup_by_path (blob, path, "bus-range", &tmp, 8, 1);
 		}
-#endif
+#endif /* CONFIG_PCI || CONFIG_PCI1 */
+#ifdef CONFIG_PCIE1
+		path = fdt_getprop (blob, node, "pci1", NULL);
+		if (path) {
+			tmp[1] = pcie1_hose.last_busno - pcie1_hose.first_busno;
+			do_fixup_by_path (blob, path, "bus-range", &tmp, 8, 1);
+		}
+#endif /* CONFIG_PCIE1 */
 	}
 }
-#endif
+#endif /* CONFIG_OF_BOARD_SETUP */
 
 #ifdef CONFIG_BOARD_EARLY_INIT_R
 int board_early_init_r (void)