diff options
| -rw-r--r-- | arch/powerpc/sysdev/fsl_rio.c | 85 |
1 files changed, 77 insertions, 8 deletions
diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c index 34440e1bac1..5b206a2fe17 100644 --- a/arch/powerpc/sysdev/fsl_rio.c +++ b/arch/powerpc/sysdev/fsl_rio.c @@ -10,7 +10,7 @@ * - Added Port-Write message handling * - Added Machine Check exception handling * - * Copyright (C) 2007, 2008 Freescale Semiconductor, Inc. + * Copyright (C) 2007, 2008, 2010 Freescale Semiconductor, Inc. * Zhang Wei <wei.zhang@freescale.com> * * Copyright 2005 MontaVista Software, Inc. @@ -47,15 +47,33 @@ #define IRQ_RIO_RX(m) (((struct rio_priv *)(m->priv))->rxirq) #define IRQ_RIO_PW(m) (((struct rio_priv *)(m->priv))->pwirq) +#define IPWSR_CLEAR 0x98 +#define OMSR_CLEAR 0x1cb3 +#define IMSR_CLEAR 0x491 +#define IDSR_CLEAR 0x91 +#define ODSR_CLEAR 0x1c00 +#define LTLEECSR_ENABLE_ALL 0xFFC000FC +#define ESCSR_CLEAR 0x07120204 + +#define RIO_PORT1_EDCSR 0x0640 +#define RIO_PORT2_EDCSR 0x0680 +#define RIO_PORT1_IECSR 0x10130 +#define RIO_PORT2_IECSR 0x101B0 +#define RIO_IM0SR 0x13064 +#define RIO_IM1SR 0x13164 +#define RIO_OM0SR 0x13004 +#define RIO_OM1SR 0x13104 + #define RIO_ATMU_REGS_OFFSET 0x10c00 #define RIO_P_MSG_REGS_OFFSET 0x11000 #define RIO_S_MSG_REGS_OFFSET 0x13000 #define RIO_GCCSR 0x13c #define RIO_ESCSR 0x158 +#define RIO_PORT2_ESCSR 0x178 #define RIO_CCSR 0x15c #define RIO_LTLEDCSR 0x0608 -#define RIO_LTLEDCSR_IER 0x80000000 -#define RIO_LTLEDCSR_PRT 0x01000000 +#define RIO_LTLEDCSR_IER 0x80000000 +#define RIO_LTLEDCSR_PRT 0x01000000 #define RIO_LTLEECSR 0x060c #define RIO_EPWISR 0x10010 #define RIO_ISR_AACR 0x10120 @@ -88,7 +106,10 @@ #define RIO_IPWSR_PWD 0x00000008 #define RIO_IPWSR_PWB 0x00000004 -#define RIO_EPWISR_PINT 0x80000000 +/* EPWISR Error match value */ +#define RIO_EPWISR_PINT1 0x80000000 +#define RIO_EPWISR_PINT2 0x40000000 +#define RIO_EPWISR_MU 0x00000002 #define RIO_EPWISR_PW 0x00000001 #define RIO_MSG_DESC_SIZE 32 @@ -1060,6 +1081,40 @@ static int fsl_rio_doorbell_init(struct rio_mport *mport) return rc; } +static void port_error_handler(struct rio_mport *port, int offset) +{ + /*XXX: Error recovery is not implemented, we just clear errors */ + out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); + + if (offset == 0) { + out_be32((u32 *)(rio_regs_win + RIO_PORT1_EDCSR), 0); + out_be32((u32 *)(rio_regs_win + RIO_PORT1_IECSR), 0); + out_be32((u32 *)(rio_regs_win + RIO_ESCSR), ESCSR_CLEAR); + } else { + out_be32((u32 *)(rio_regs_win + RIO_PORT2_EDCSR), 0); + out_be32((u32 *)(rio_regs_win + RIO_PORT2_IECSR), 0); + out_be32((u32 *)(rio_regs_win + RIO_PORT2_ESCSR), ESCSR_CLEAR); + } +} + +static void msg_unit_error_handler(struct rio_mport *port) +{ + struct rio_priv *priv = port->priv; + + /*XXX: Error recovery is not implemented, we just clear errors */ + out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0); + + out_be32((u32 *)(rio_regs_win + RIO_IM0SR), IMSR_CLEAR); + out_be32((u32 *)(rio_regs_win + RIO_IM1SR), IMSR_CLEAR); + out_be32((u32 *)(rio_regs_win + RIO_OM0SR), OMSR_CLEAR); + out_be32((u32 *)(rio_regs_win + RIO_OM1SR), OMSR_CLEAR); + + out_be32(&priv->msg_regs->odsr, ODSR_CLEAR); + out_be32(&priv->msg_regs->dsr, IDSR_CLEAR); + + out_be32(&priv->msg_regs->pwsr, IPWSR_CLEAR); +} + /** * fsl_rio_port_write_handler - MPC85xx port write interrupt handler * @irq: Linux interrupt number @@ -1140,10 +1195,22 @@ fsl_rio_port_write_handler(int irq, void *dev_instance) } pw_done: - if (epwisr & RIO_EPWISR_PINT) { + if (epwisr & RIO_EPWISR_PINT1) { + tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); + pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); + port_error_handler(port, 0); + } + + if (epwisr & RIO_EPWISR_PINT2) { + tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); + pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); + port_error_handler(port, 1); + } + + if (epwisr & RIO_EPWISR_MU) { tmp = in_be32(priv->regs_win + RIO_LTLEDCSR); pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp); - out_be32(priv->regs_win + RIO_LTLEDCSR, 0); + msg_unit_error_handler(port); } return IRQ_HANDLED; @@ -1254,12 +1321,14 @@ static int fsl_rio_port_write_init(struct rio_mport *mport) /* Hook up port-write handler */ - rc = request_irq(IRQ_RIO_PW(mport), fsl_rio_port_write_handler, 0, - "port-write", (void *)mport); + rc = request_irq(IRQ_RIO_PW(mport), fsl_rio_port_write_handler, + IRQF_SHARED, "port-write", (void *)mport); if (rc < 0) { pr_err("MPC85xx RIO: unable to request inbound doorbell irq"); goto err_out; } + /* Enable Error Interrupt */ + out_be32((u32 *)(rio_regs_win + RIO_LTLEECSR), LTLEECSR_ENABLE_ALL); INIT_WORK(&priv->pw_work, fsl_pw_dpc); spin_lock_init(&priv->pw_fifo_lock); |