[U-Boot-Users] [PATCH] TQM8548: PCI express support

Wolfgang Grandegger
2008-05-28T18:12:27Z

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>
---
board/tqc/tqm85xx/law.c | 15 +++-
board/tqc/tqm85xx/tlb.c | 30 ++++++
board/tqc/tqm85xx/tqm85xx.c | 205 ++++++++++++++++++++++++++++++++++++-------
include/configs/TQM85xx.h | 35 +++++++-
4 files changed, 249 insertions(+), 36 deletions(-)

diff --git a/board/tqc/tqm85xx/law.c b/board/tqc/tqm85xx/law.c
index ad35464..bec1ed5 100644
--- a/board/tqc/tqm85xx/law.c
+++ b/board/tqc/tqm85xx/law.c
@@ -32,11 +32,11 @@
*
* 0x0000_0000 0x7fff_ffff DDR 2G
* 0x8000_0000 0x9fff_ffff PCI1 MEM 512M
- * 0xc000_0000 0xdfff_ffff RapidIO 512M
+ * 0xc000_0000 0xdfff_ffff RapidIO or PCI express 512M
* 0xe000_0000 0xe000_ffff CCSR 1M
* 0xe200_0000 0xe2ff_ffff PCI1 IO 16M
* 0xe300_0000 0xe3ff_ffff CAN 16M
- * 0xf800_0000 0xf80f_ffff BCSR 1M
+ * 0xef00_0000 0xefff_ffff PCI express IO 16M
* 0xfe00_0000 0xffff_ffff FLASH (boot bank) 32M
*
* Notes:
@@ -49,10 +49,17 @@ struct law_entry law_table[] = {
SET_LAW_ENTRY (2, CFG_PCI1_MEM_PHYS, LAW_SIZE_512M, LAW_TRGT_IF_PCI),
SET_LAW_ENTRY (3, CFG_LBC_FLASH_BASE, LAW_SIZE_128M, LAW_TRGT_IF_LBC),
SET_LAW_ENTRY (4, CFG_PCI1_IO_PHYS, LAW_SIZE_16M, LAW_TRGT_IF_PCI),
- SET_LAW_ENTRY (5, CFG_RIO_MEM_BASE, LAWAR_SIZE_512M, LAW_TRGT_IF_RIO),
+#ifdef CONFIG_PCIE1
+ SET_LAW_ENTRY (5, CFG_PCIE1_MEM_BASE, LAW_SIZE_512M, LAW_TRGT_IF_PCIE_1),
+#else /* !CONFIG_PCIE1 */
+ SET_LAW_ENTRY (5, CFG_RIO_MEM_BASE, LAW_SIZE_512M, LAW_TRGT_IF_RIO),
+#endif /* CONFIG_PCIE1 */
#ifdef CONFIG_CAN_DRIVER
- SET_LAW_ENTRY (6, CFG_CAN_BASE, LAWAR_SIZE_16M, LAW_TRGT_IF_LBC),
+ SET_LAW_ENTRY (6, CFG_CAN_BASE, LAW_SIZE_16M, LAW_TRGT_IF_LBC),
#endif /* CONFIG_CAN_DRIVER */
+#ifdef CONFIG_PCIE1
+ SET_LAW_ENTRY (7, CFG_PCIE1_IO_BASE, LAW_SIZE_16M, LAW_TRGT_IF_PCIE_1),
+#endif /* CONFIG_PCIE */
};

int num_law_entries = ARRAY_SIZE (law_table);
diff --git a/board/tqc/tqm85xx/tlb.c b/board/tqc/tqm85xx/tlb.c
index dc36201..7c4b9a1 100644
--- a/board/tqc/tqm85xx/tlb.c
+++ b/board/tqc/tqm85xx/tlb.c
@@ -74,6 +74,24 @@ struct fsl_e_tlb_entry tlb_table[] = {
MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
0, 3, BOOKE_PAGESZ_256M, 1),

+#ifdef CONFIG_PCIE1
+ /*
+ * TLB 4: 256M Non-cacheable, guarded
+ * 0xc0000000 256M PCI express MEM First half
+ */
+ SET_TLB_ENTRY (1, CFG_PCIE1_MEM_BASE, CFG_PCIE1_MEM_BASE,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 4, BOOKE_PAGESZ_256M, 1),
+
+ /*
+ * TLB 5: 256M Non-cacheable, guarded
+ * 0xd0000000 256M PCI express MEM Second half
+ */
+ SET_TLB_ENTRY (1, CFG_PCIE1_MEM_BASE + 0x10000000,
+ CFG_PCIE1_MEM_BASE + 0x10000000,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 5, BOOKE_PAGESZ_256M, 1),
+#else /* !CONFIG_PCIE */
/*
* TLB 4: 256M Non-cacheable, guarded
* 0xc0000000 256M Rapid IO MEM First half
@@ -90,6 +108,7 @@ struct fsl_e_tlb_entry tlb_table[] = {
CFG_RIO_MEM_BASE + 0x10000000,
MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
0, 5, BOOKE_PAGESZ_256M, 1),
+#endif /* CONFIG_PCIE */

/*
* TLB 6: 64M Non-cacheable, guarded
@@ -116,6 +135,17 @@ struct fsl_e_tlb_entry tlb_table[] = {
CFG_DDR_SDRAM_BASE + 0x10000000,
MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
0, 8, BOOKE_PAGESZ_256M, 1),
+
+#ifdef CONFIG_PCIE1
+ /*
+ * TLB 9: 16M Non-cacheable, guarded
+ * 0xef000000 16M PCI express IO
+ */
+ SET_TLB_ENTRY (1, CFG_PCIE1_IO_BASE, CFG_PCIE1_IO_BASE,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 9, BOOKE_PAGESZ_16M, 1),
+#endif /* CONFIG_PCIE */
+
};

int num_tlb_entries = ARRAY_SIZE (tlb_table);
diff --git a/board/tqc/tqm85xx/tqm85xx.c b/board/tqc/tqm85xx/tqm85xx.c
index 4d06599..6459b7a 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.
*/
@@ -539,38 +533,180 @@ 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@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");
+
+ /* 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);

-#endif /* CONFIG_PCI */
+ 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];
@@ -581,16 +717,23 @@ 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)
diff --git a/include/configs/TQM85xx.h b/include/configs/TQM85xx.h
index da06ffd..6e62c34 100644
--- a/include/configs/TQM85xx.h
+++ b/include/configs/TQM85xx.h
@@ -42,6 +42,14 @@
#define CONFIG_MPC85xx 1 /* MPC8540/60/55/41 */

#define CONFIG_PCI
+#define CONFIG_FSL_PCI_INIT 1 /* Use common FSL init code */
+#define CONFIG_PCIX_CHECK /* PCIX olny works at 66 MHz */
+#ifdef CONFIG_TQM8548
+#define CONFIG_PCI1
+#define CONFIG_PCIE1
+#define CONFIG_FSL_PCIE_RESET 1 /* need PCIe reset errata */
+#endif
+
#define CONFIG_TSEC_ENET /* tsec ethernet support */

#define CONFIG_MISC_INIT_R 1 /* Call misc_init_r */
@@ -97,6 +105,10 @@
#define CFG_CCSRBAR_PHYS CFG_CCSRBAR /* physical addr of CCSRBAR */
#define CFG_IMMR CFG_CCSRBAR /* PQII uses CFG_IMMR */

+#define CFG_PCI1_ADDR (CFG_CCSRBAR + 0x8000)
+#define CFG_PCI2_ADDR (CFG_CCSRBAR + 0x9000)
+#define CFG_PCIE1_ADDR (CFG_CCSRBAR + 0xa000)
+
/*
* DDR Setup
*/
@@ -282,10 +294,12 @@
#define CFG_DTT_LOW_TEMP -30
#define CFG_DTT_HYSTERESIS 3

+#ifndef CONFIG_PCIE1
/* RapidIO MMU */
#define CFG_RIO_MEM_BASE 0xc0000000 /* base address */
#define CFG_RIO_MEM_PHYS CFG_RIO_MEM_BASE
-#define CFG_RIO_MEM_SIZE 0x20000000 /* 128M */
+#define CFG_RIO_MEM_SIZE 0x20000000 /* 512M */
+#endif /* CONFIG_PCIE1 */

/*
* General PCI
@@ -298,6 +312,25 @@
#define CFG_PCI1_IO_PHYS CFG_PCI1_IO_BASE
#define CFG_PCI1_IO_SIZE 0x1000000 /* 16M */

+/* PCI view of System Memory */
+#define CFG_PCI_MEMORY_BUS 0x00000000
+#define CFG_PCI_MEMORY_PHYS 0x00000000
+#define CFG_PCI_MEMORY_SIZE 0x80000000
+
+#ifdef CONFIG_PCIE1
+/*
+ * General PCI express
+ * Addresses are mapped 1-1.
+ */
+#define CFG_PCIE1_MEM_BASE 0xc0000000
+#define CFG_PCIE1_MEM_PHYS CFG_PCIE1_MEM_BASE
+#define CFG_PCIE1_MEM_SIZE 0x20000000 /* 512M */
+#define CFG_PCIE1_IO_BASE 0xef000000
+#define CFG_PCIE1_IO_PHYS CFG_PCIE1_IO_BASE
+#define CFG_PCIE1_IO_SIZE 0x1000000 /* 16M */
+
+#endif /* CONFIG_PCIE1 */
+
#if defined(CONFIG_PCI)

#define CONFIG_PCI_PNP /* do pci plug-and-play */
--
1.5.2.2