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fsl_pci: Add support for FSL PCIe controllers v2.x

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FSL PCIe controller v2.1:
	- New MSI inbound window
	- Same Inbound windows address as PCIe controller v1.x

Added new pit_t member(pmit) to struct ccsr_pci for MSI inbound window

FSL PCIe controller v2.2 and v2.3:
	- Different addresses for PCIe inbound window 3,2,1
	- Exposed PCIe inbound window 0
	- New PCIe interrupt status register

Added new Interrupt Status register to struct ccsr_pci & updated pit_t array
size to reflect the 4 inbound windows.

To maintain backward compatiblilty, on V2.2 or greater controllers we
start with inbound window 1 and leave inbound 0 with its default value
(which maps to CCSRBAR).

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Prabhakar Kushwaha 2011-02-04 09:00:43 +05:30 committed by Kumar Gala
parent 24995d829a
commit b6ccd2c9de
2 changed files with 26 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
arch/powerpc/include/asm/fsl_pci.h
View File

@ -1,5 +1,5 @@
/*
* Copyright 2007,2009-2010 Freescale Semiconductor, Inc.
* Copyright 2007,2009-2011 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@ -25,6 +25,9 @@
#include <asm/fsl_serdes.h>
#include <pci.h>
#define PEX_IP_BLK_REV_2_2 0x02080202
#define PEX_IP_BLK_REV_2_3 0x02080203
int fsl_setup_hose(struct pci_controller *hose, unsigned long addr);
int fsl_is_pci_agent(struct pci_controller *hose);
void fsl_pci_config_unlock(struct pci_controller *hose);
@ -73,7 +76,8 @@ typedef struct ccsr_pci {
u32 out_comp_to; /* 0x00C - PCI Outbound Completion Timeout Register */
u32 out_conf_to; /* 0x010 - PCI Configuration Timeout Register */
u32 config; /* 0x014 - PCIE CONFIG Register */
char res2[8];
u32 int_status; /* 0x018 - PCIE interrupt status register */
char res2[4];
u32 pme_msg_det; /* 0x020 - PCIE PME & message detect register */
u32 pme_msg_dis; /* 0x024 - PCIE PME & message disable register */
u32 pme_msg_int_en; /* 0x028 - PCIE PME & message interrupt enable register */
@ -83,8 +87,11 @@ typedef struct ccsr_pci {
u32 block_rev2; /* 0xbfc - PCIE Block Revision register 2 */
pot_t pot[5]; /* 0xc00 - 0xc9f Outbound ATMU's 0, 1, 2, 3, and 4 */
u32 res5[64];
pit_t pit[3]; /* 0xda0 - 0xdff Inbound ATMU's 3, 2, and 1 */
u32 res5[24];
pit_t pmit; /* 0xd00 - 0xd9c Inbound ATMU's MSI */
u32 res6[24];
pit_t pit[4]; /* 0xd80 - 0xdff Inbound ATMU's 3, 2, 1 and 0 */
#define PIT3 0
#define PIT2 1
#define PIT1 2
@ -158,6 +165,11 @@ typedef struct ccsr_pci {
u32 pdb_stat; /* 0xf00 - PCIE Debug Status */
char res24[252];
} ccsr_fsl_pci_t;
#define PCIE_CONFIG_PC 0x00020000
#define PCIE_CONFIG_OB_CK 0x00002000
#define PCIE_CONFIG_SAC 0x00000010
#define PCIE_CONFIG_SP 0x80000002
#define PCIE_CONFIG_SCC 0x80000001
struct fsl_pci_info {
unsigned long regs;

12
drivers/pci/fsl_pci_init.c
View File

@ -1,5 +1,5 @@
/*
* Copyright 2007-2010 Freescale Semiconductor, Inc.
* Copyright 2007-2011 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
@ -223,6 +223,7 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info)
u32 cfg_data = (u32)&((ccsr_fsl_pci_t *)pci_info->regs)->cfg_data;
u16 temp16;
u32 temp32;
u32 block_rev;
int enabled, r, inbound = 0;
u16 ltssm;
u8 temp8, pcie_cap;
@ -232,13 +233,20 @@ void fsl_pci_init(struct pci_controller *hose, struct fsl_pci_info *pci_info)
/* Initialize ATMU registers based on hose regions and flags */
volatile pot_t *po = &pci->pot[1]; /* skip 0 */
volatile pit_t *pi = &pci->pit[2]; /* ranges from: 3 to 1 */
volatile pit_t *pi;
u64 out_hi = 0, out_lo = -1ULL;
u32 pcicsrbar, pcicsrbar_sz;
pci_setup_indirect(hose, cfg_addr, cfg_data);
block_rev = in_be32(&pci->block_rev1);
if (PEX_IP_BLK_REV_2_2 <= block_rev) {
pi = &pci->pit[2]; /* 0xDC0 */
} else {
pi = &pci->pit[3]; /* 0xDE0 */
}
/* Handle setup of outbound windows first */
for (r = 0; r < hose->region_count; r++) {
unsigned long flags = hose->regions[r].flags;