Hi all,
The reason why I chose to work with MM and not with RHEAP is that,
apparently, there is a BUG in the RHEAP module,
it is not allocating correctly blocks that require alignments grater
than 8.
The usage of MM is only a temporary solution till RHEAP is fixed.
Regards,
Shlomi
-----Original Message-----
From: Kumar Gala [mailto:[email protected]]
Sent: Wednesday, June 28, 2006 22:20
To: Li Yang-r58472
Cc: 'Paul Mackerras'; [email protected];
'[email protected]'; Chu hanjin-r52514; Gridish
Shlomi-RM96313; Phillips Kim-R1AAHA
Subject: Re: [PATCH 3/7] powerpc: Add QE library qe_lib--common files
Nack, remove the mm allocation code and just use rheap.
- k
On Jun 28, 2006, at 9:23 AM, Li Yang-r58472 wrote:
>
> Signed-off-by: Shlomi Gridish <[email protected]>
> Signed-off-by: Li Yang <[email protected]>
> Signed-off-by: Kim Phillips <[email protected]>
>
> ---
> arch/powerpc/Kconfig | 12
> arch/powerpc/sysdev/Makefile | 1
> arch/powerpc/sysdev/ipic.c | 2
> arch/powerpc/sysdev/qe_lib/Kconfig | 315 +++++++++++++
> arch/powerpc/sysdev/qe_lib/Makefile | 8
> arch/powerpc/sysdev/qe_lib/mm.c | 770 +++++++++++++++++++++
> +++++++++++
> arch/powerpc/sysdev/qe_lib/mm.h | 6
> arch/powerpc/sysdev/qe_lib/qe.c | 181 ++++++++
> arch/powerpc/sysdev/qe_lib/qe_common.c | 401 +++++++++++++++++
> arch/powerpc/sysdev/qe_lib/qe_ic.c | 487 ++++++++++++++++++++
> arch/powerpc/sysdev/qe_lib/qe_ic.h | 83 +++
> arch/powerpc/sysdev/qe_lib/qe_io.c | 275 +++++++++++
> 12 files changed, 2541 insertions(+), 0 deletions(-)
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 6729c98..6d4fc0b 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -334,6 +334,16 @@ config APUS
> <http://linux-apus.sourceforge.net/>.
> endchoice
>
> +config QUICC_ENGINE
> + bool
> + depends on MPC836x
> + default y
> + help
> + The QE(QUICC Engine) is a new generation of coprocessor on
> + Freescale embedded CPUs(like CPM in older chips). Selecting
> + this option means that you wish to build a kernel for a
machine
> + with QE coprocessor on it.
> +
> config PPC_PSERIES
> depends on PPC_MULTIPLATFORM && PPC64
> bool " IBM pSeries & new (POWER5-based) iSeries"
> @@ -993,6 +1003,8 @@ # XXX source "arch/ppc/8xx_io/Kconfig"
>
> # XXX source "arch/ppc/8260_io/Kconfig"
>
> +source "arch/powerpc/sysdev/qe_lib/Kconfig"
> +
> source "arch/powerpc/platforms/iseries/Kconfig"
>
> source "lib/Kconfig"
> diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/
> Makefile
> index 4c2b356..cd1d5cc 100644
> --- a/arch/powerpc/sysdev/Makefile
> +++ b/arch/powerpc/sysdev/Makefile
> @@ -8,3 +8,4 @@ obj-$(CONFIG_U3_DART) += dart_iommu.o
> obj-$(CONFIG_MMIO_NVRAM) += mmio_nvram.o
> obj-$(CONFIG_PPC_83xx) += ipic.o
> obj-$(CONFIG_FSL_SOC) += fsl_soc.o
> +obj-$(CONFIG_QUICC_ENGINE) += qe_lib/
> diff --git a/arch/powerpc/sysdev/ipic.c b/arch/powerpc/sysdev/ipic.c
> index 8f01e0f..dbeccba 100644
> --- a/arch/powerpc/sysdev/ipic.c
> +++ b/arch/powerpc/sysdev/ipic.c
> @@ -537,12 +537,14 @@ void ipic_set_highest_priority(unsigned
>
> void ipic_set_default_priority(void)
> {
> +#ifdef CONFIG_MPC834x
> ipic_set_priority(MPC83xx_IRQ_TSEC1_TX, 0);
> ipic_set_priority(MPC83xx_IRQ_TSEC1_RX, 1);
> ipic_set_priority(MPC83xx_IRQ_TSEC1_ERROR, 2);
> ipic_set_priority(MPC83xx_IRQ_TSEC2_TX, 3);
> ipic_set_priority(MPC83xx_IRQ_TSEC2_RX, 4);
> ipic_set_priority(MPC83xx_IRQ_TSEC2_ERROR, 5);
> +#endif
> ipic_set_priority(MPC83xx_IRQ_USB2_DR, 6);
> ipic_set_priority(MPC83xx_IRQ_USB2_MPH, 7);
>
> diff --git a/arch/powerpc/sysdev/qe_lib/Kconfig b/arch/powerpc/
> sysdev/qe_lib/Kconfig
> new file mode 100644
> index 0000000..6105237
> --- /dev/null
> +++ b/arch/powerpc/sysdev/qe_lib/Kconfig
> @@ -0,0 +1,315 @@
> +#
> +# QE Communication options
> +#
> +
> +menu "QE Options"
> + depends on QUICC_ENGINE
> +
> +config UCC1
> + bool "Enable QE UCC1"
> +
> +choice
> + prompt "UCC1 speed selection"
> + depends on UCC1
> + default UCC1_SLOW
> +
> + config UCC1_SLOW
> + bool "UCC1 is slow"
> + config UCC1_FAST
> + bool "UCC1 is fast"
> +endchoice
> +
> +menu "UCC1 Protocols options"
> + depends on UCC1
> +
> + choice
> + prompt "UCC1 Slow Protocols selection"
> + depends on UCC1_SLOW
> + default UCC1_UART
> +
> + config UCC1_UART
> + bool "UCC1 is UART"
> + endchoice
> +
> + choice
> + prompt "UCC1 Fast Protocols selection"
> + depends on UCC1_FAST
> + default UCC1_GETH
> +
> + config UCC1_GETH
> + bool "UCC1 is GETH"
> + endchoice
> +endmenu
> +
> +config UCC2
> + bool "Enable QE UCC2"
> +
> +choice
> + prompt "UCC2 speed selection"
> + depends on UCC2
> + default UCC2_SLOW
> +
> + config UCC2_SLOW
> + bool "UCC2 is slow"
> + config UCC2_FAST
> + bool "UCC2 is fast"
> +endchoice
> +
> +menu "UCC2 Protocols options"
> + depends on UCC2
> +
> + choice
> + prompt "UCC2 Slow Protocols selection"
> + depends on UCC2_SLOW
> + default UCC2_UART
> +
> + config UCC2_UART
> + bool "UCC2 is UART"
> + endchoice
> +
> + choice
> + prompt "UCC2 Fast Protocols selection"
> + depends on UCC2_FAST
> + default UCC2_GETH
> +
> + config UCC2_GETH
> + bool "UCC2 is GETH"
> + endchoice
> +endmenu
> +
> +config UCC3
> + bool "Enable QE UCC3"
> +
> +choice
> + prompt "UCC3 speed selection"
> + depends on UCC3
> + default UCC3_SLOW
> +
> + config UCC3_SLOW
> + bool "UCC3 is slow"
> + config UCC3_FAST
> + bool "UCC3 is fast"
> +endchoice
> +
> +menu "UCC3 Protocols options"
> + depends on UCC3
> +
> + choice
> + prompt "UCC3 Slow Protocols selection"
> + depends on UCC3_SLOW
> + default UCC3_UART
> +
> + config UCC3_UART
> + bool "UCC3 is UART"
> + endchoice
> +
> + config UCC3_GETH
> + depends on UCC3_FAST
> + bool "UCC3 is GETH"
> +
> + config UCC3_ATM
> + depends on UCC3_FAST && !UCC3_GETH
> + tristate "UCC3 is ATM"
> +endmenu
> +
> +config UCC4
> + bool "Enable QE UCC4"
> +
> +choice
> + prompt "UCC4 speed selection"
> + depends on UCC4
> + default UCC4_SLOW
> +
> + config UCC4_SLOW
> + bool "UCC4 is slow"
> + config UCC4_FAST
> + bool "UCC4 is fast"
> +endchoice
> +
> +menu "UCC4 Protocols options"
> + depends on UCC4
> +
> + choice
> + prompt "UCC4 Slow Protocols selection"
> + depends on UCC4_SLOW
> + default UCC4_UART
> +
> + config UCC4_UART
> + bool "UCC4 is UART"
> + endchoice
> +
> + choice
> + prompt "UCC4 Fast Protocols selection"
> + depends on UCC4_FAST
> + default UCC4_GETH
> +
> + config UCC4_GETH
> + bool "UCC4 is GETH"
> + endchoice
> +endmenu
> +
> +config UCC5
> + bool "Enable QE UCC5"
> +
> +choice
> + prompt "UCC5 speed selection"
> + depends on UCC5
> + default UCC5_SLOW
> +
> + config UCC5_SLOW
> + bool "UCC5 is slow"
> + config UCC5_FAST
> + bool "UCC5 is fast"
> +endchoice
> +
> +menu "UCC5 Protocols options"
> + depends on UCC5
> +
> + choice
> + prompt "UCC5 Slow Protocols selection"
> + depends on UCC5_SLOW
> + default UCC5_UART
> +
> + config UCC5_UART
> + bool "UCC5 is UART"
> + endchoice
> +
> + choice
> + prompt "UCC5 Fast Protocols selection"
> + depends on UCC5_FAST
> + default UCC5_GETH
> +
> + config UCC5_GETH
> + bool "UCC5 is GETH"
> + endchoice
> +endmenu
> +
> +config UCC6
> + bool "Enable QE UCC6"
> +
> +choice
> + prompt "UCC6 speed selection"
> + depends on UCC6
> + default UCC6_SLOW
> +
> + config UCC6_SLOW
> + bool "UCC6 is slow"
> + config UCC6_FAST
> + bool "UCC6 is fast"
> +endchoice
> +
> +menu "UCC6 Protocols options"
> + depends on UCC6
> +
> + choice
> + prompt "UCC6 Slow Protocols selection"
> + depends on UCC6_SLOW
> + default UCC6_UART
> +
> + config UCC6_UART
> + bool "UCC6 is UART"
> + endchoice
> +
> + choice
> + prompt "UCC6 Fast Protocols selection"
> + depends on UCC6_FAST
> + default UCC6_GETH
> +
> + config UCC6_GETH
> + bool "UCC6 is GETH"
> + endchoice
> +endmenu
> +
> +config UCC7
> + bool "Enable QE UCC7"
> +
> +choice
> + prompt "UCC7 speed selection"
> + depends on UCC7
> + default UCC7_SLOW
> +
> + config UCC7_SLOW
> + bool "UCC7 is slow"
> + config UCC7_FAST
> + bool "UCC7 is fast"
> +endchoice
> +
> +menu "UCC7 Protocols options"
> + depends on UCC7
> +
> + choice
> + prompt "UCC7 Slow Protocols selection"
> + depends on UCC7_SLOW
> + default UCC7_UART
> +
> + config UCC7_UART
> + bool "UCC7 is UART"
> + endchoice
> +
> + choice
> + prompt "UCC7 Fast Protocols selection"
> + depends on UCC7_FAST
> + default UCC7_GETH
> +
> + config UCC7_GETH
> + bool "UCC7 is GETH"
> + endchoice
> +endmenu
> +
> +config UCC8
> + bool "Enable QE UCC8"
> +
> +choice
> + prompt "UCC8 speed selection"
> + depends on UCC8
> + default UCC8_SLOW
> +
> + config UCC8_SLOW
> + bool "UCC8 is slow"
> + config UCC8_FAST
> + bool "UCC8 is fast"
> +endchoice
> +
> +menu "UCC8 Protocols options"
> + depends on UCC8
> +
> + choice
> + prompt "UCC8 Slow Protocols selection"
> + depends on UCC8_SLOW
> + default UCC8_UART
> +
> + config UCC8_UART
> + bool "UCC8 is UART"
> + endchoice
> +
> + choice
> + prompt "UCC8 Fast Protocols selection"
> + depends on UCC8_FAST
> + default UCC8_GETH
> +
> + config UCC8_GETH
> + bool "UCC8 is GETH"
> + endchoice
> +endmenu
> +
> +config UCC
> + depends on UCC1 || UCC2 || UCC3 || UCC4 || UCC5 || UCC6 || UCC7
> || UCC8
> + default y
> + bool
> +
> +config UCC_SLOW
> + depends on UCC1_SLOW || UCC2_SLOW || UCC3_SLOW || UCC4_SLOW ||
> UCC5_SLOW || UCC6_SLOW || UCC7_SLOW || UCC8_SLOW
> + default y
> + bool
> +
> +config UCC_FAST
> + depends on UCC1_FAST || UCC2_FAST || UCC3_FAST || UCC4_FAST ||
> UCC5_FAST || UCC6_FAST || UCC7_FAST || UCC8_FAST
> + default y
> + bool
> +
> +config UCC_GETH_CONF
> + depends on UCC1_GETH || UCC2_GETH || UCC3_GETH || UCC4_GETH ||
> UCC5_GETH || UCC6_GETH || UCC7_GETH || UCC8_GETH
> + default y
> + bool
> +endmenu
> +
> diff --git a/arch/powerpc/sysdev/qe_lib/Makefile b/arch/powerpc/
> sysdev/qe_lib/Makefile
> new file mode 100644
> index 0000000..c04a70c
> --- /dev/null
> +++ b/arch/powerpc/sysdev/qe_lib/Makefile
> @@ -0,0 +1,8 @@
> +#
> +# Makefile for the linux ppc-specific parts of QE
> +#
> +obj-$(CONFIG_QUICC_ENGINE)+= qe_common.o mm.o qe.o qe_ic.o qe_io.o
> +
> +obj-$(CONFIG_UCC) += ucc.o
> +obj-$(CONFIG_UCC_SLOW) += ucc_slow.o
> +obj-$(CONFIG_UCC_FAST) += ucc_fast.o ucc_slow.o
> diff --git a/arch/powerpc/sysdev/qe_lib/mm.c b/arch/powerpc/sysdev/
> qe_lib/mm.c
> new file mode 100644
> index 0000000..58984ba
> --- /dev/null
> +++ b/arch/powerpc/sysdev/qe_lib/mm.c
> @@ -0,0 +1,770 @@
> +/*
> + * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights
> reserved.
> + *
> + * Author: Shlomi Gridish <[email protected]>
> + *
> + * Description:
> + * QE Memory Manager.
> + *
> + * Changelog:
> + * Jun 28, 2006 Li Yang <[email protected]>
> + * - Reorganized as qe_lib
> + * - Merged to powerpc arch; add device tree support
> + * - Style fixes
> + *
> + * 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 Software Foundation; either version 2 of the License, or
> (at your
> + * option) any later version.
> + */
> +#include <linux/errno.h>
> +#include <linux/sched.h>
> +#include <linux/kernel.h>
> +#include <linux/param.h>
> +#include <linux/string.h>
> +#include <linux/mm.h>
> +#include <linux/interrupt.h>
> +#include <linux/bootmem.h>
> +#include <linux/module.h>
> +#include <asm/irq.h>
> +#include <asm/page.h>
> +#include <asm/pgtable.h>
> +
> +#include "mm.h"
> +
> +#define MAX_ALIGNMENT 20
> +#define MAX_NAME_LEN 50
> +
> +#define MAKE_ALIGNED(adr, align) ( ((u32)adr + (align - 1)) & (~
> (align - 1)) )
> +
> +/* mem_block_t data stucutre defines parameters of the Memory
> Block */
> +typedef struct mem_block {
> + struct mem_block *next; /* Pointer to the next memory block */
> +
> + u32 base; /* base address of the memory block */
> + u32 end; /* end address of the memory block */
> +} mem_block_t;
> +
> +/* free_block_t data stucutre defines parameters of the Free Block */
> +typedef struct free_block {
> + struct free_block *next; /* Pointer to the next free
block */
> +
> + u32 base; /* base address of the block */
> + u32 end; /* end address of the block */
> +} free_block_t;
> +
> +/* busy_block_t data stucutre defines parameters of the Busy
> Block */
> +typedef struct busy_block {
> + struct busy_block *next; /* Pointer to the next free
block */
> +
> + u32 base; /* base address of the block */
> + u32 end; /* end address of the block */
> + char name[MAX_NAME_LEN];
> +} busy_block_t;
> +
> +/* mm_t data structure defines parameters of the MM object */
> +typedef struct mm {
> + mem_block_t *mem_blocks; /* List of memory blocks (Memory
> list) */
> + busy_block_t *busy_blocks; /* List of busy blocks (Busy
list) */
> + free_block_t *free_blocks[MAX_ALIGNMENT + 1];/* align lists of
free
> + blocks (Free
lists) */
> +} mm_t;
> +
> +/
> **********************************************************************
> + * MM internal routines
> set *
> +
> **********************************************************************
> /
> +
> +/****************************************************************
> + * Routine: mem_block_init
> + *
> + * Description:
> + * Initializes a new memory block of "size" bytes and started
> + * from "base" address.
> + *
> + * Arguments:
> + * mem_blk- handle to the mem_blk object
> + * base - base address of the memory block
> + * size - size of the memory block
> + *
> + * Return value:
> + * 0 is returned on success. E_NOMEMORY is returned
> + * if can't allocate memory for mem_blk object.
> + ****************************************************************/
> +static int mem_block_init(void **mem_blk, u32 base, u32 size)
> +{
> + mem_block_t *p_mem_blk;
> +
> + p_mem_blk = (mem_block_t *) kmalloc(sizeof(mem_block_t),
> GFP_KERNEL);
> + if (!p_mem_blk)
> + return -ENOMEM;
> +
> + p_mem_blk->base = base;
> + p_mem_blk->end = base + size;
> + p_mem_blk->next = 0;
> +
> + *mem_blk = p_mem_blk;
> +
> + return (0);
> +}
> +
> +/****************************************************************
> + * Routine: free_block_init
> + *
> + * Description:
> + * Initializes a new free block of of "size" bytes and
> + * started from "base" address.
> + *
> + * Arguments:
> + * FreeBlock - handle to the FreeBlock object
> + * base - base address of the free block
> + * size - size of the free block
> + *
> + * Return value:
> + * 0 is returned on success. E_NOMEMORY is returned
> + * if can't allocate memory for a free block.
> + ****************************************************************/
> +static int free_block_init(void **FreeBlock, u32 base, u32 size)
> +{
> + free_block_t *p_free_blk;
> +
> + p_free_blk = (free_block_t *) kmalloc(sizeof(free_block_t),
> GFP_KERNEL);
> + if (!p_free_blk)
> + return -ENOMEM;
> +
> + p_free_blk->base = base;
> + p_free_blk->end = base + size;
> + p_free_blk->next = 0;
> +
> + *FreeBlock = p_free_blk;
> +
> + return (0);
> +}
> +
> +/****************************************************************
> + * Routine: busy_block_init
> + *
> + * Description:
> + * Initializes a new busy block of "size" bytes and started
> + * rom "base" address. Each busy block has a name that
> + * specified the purpose of the memory allocation.
> + *
> + * Arguments:
> + * BusyBlock - handle to the BusyBlock object
> + * base - base address of the busy block
> + * size - size of the busy block
> + * name - name that specified the busy block
> + *
> + * Return value:
> + * 0 is returned on success. E_NOMEMORY is returned
> + * if can't allocate memory for busy block.
> + ****************************************************************/
> +static int busy_block_init(void **BusyBlock, u32 base, u32 size,
> char *name)
> +{
> + busy_block_t *p_busy_blk;
> + int n, NameLen;
> +
> + p_busy_blk = (busy_block_t *) kmalloc(sizeof(busy_block_t),
> GFP_KERNEL);
> + if (!p_busy_blk)
> + return -ENOMEM;
> +
> + p_busy_blk->base = base;
> + p_busy_blk->end = base + size;
> + NameLen = (int)strlen(name);
> + n = (NameLen > MAX_NAME_LEN - 1) ? MAX_NAME_LEN - 1 : NameLen;
> + strncpy(p_busy_blk->name, name, (u32) n);
> + p_busy_blk->name[n] = '\0';
> + p_busy_blk->next = 0;
> +
> + *BusyBlock = p_busy_blk;
> +
> + return (0);
> +}
> +
> +/****************************************************************
> + * Routine: add_free
> + *
> + * Description:
> + * Adds a new free block to the free lists. It updates each
> + * free list to include a new free block.
> + * Note, that all free block in each free list are ordered
> + * by their base address.
> + *
> + * Arguments:
> + * p_mm - pointer to the MM object
> + * base - base address of a given free block
> + * end - end address of a given free block
> + *
> + * Return value:
> + *
> + *
> + ****************************************************************/
> +static int add_free(mm_t * p_mm, u32 base, u32 end)
> +{
> + free_block_t *p_prev_blk, *p_curr_blk, *p_new_blk;
> + u32 align;
> + int i;
> + u32 align_base;
> +
> + /* Updates free lists to include a just released block */
> + for (i = 0; i <= MAX_ALIGNMENT; i++) {
> + p_prev_blk = p_new_blk = 0;
> + p_curr_blk = p_mm->free_blocks[i];
> +
> + align = (u32) (0x1 << i);
> + align_base = MAKE_ALIGNED(base, align);
> +
> + /* Goes to the next free list if there is no block to
free */
> + if (align_base >= end)
> + continue;
> +
> + /* Looks for a free block that should be updated */
> + while (p_curr_blk) {
> + if (align_base <= p_curr_blk->end) {
> + if (end > p_curr_blk->end) {
> + free_block_t *p_NextB;
> + while (p_curr_blk->next
> + && end >
p_curr_blk->next->end) {
> + p_NextB =
p_curr_blk->next;
> + p_curr_blk->next =
> +
p_curr_blk->next->next;
> + kfree(p_NextB);
> + }
> +
> + p_NextB = p_curr_blk->next;
> + if (!p_NextB
> + || (p_NextB
> + && end < p_NextB->base))
{
> + p_curr_blk->end = end;
> + } else {
> + p_curr_blk->end =
p_NextB->end;
> + p_curr_blk->next =
> + p_NextB->next;
> + kfree(p_NextB);
> + }
> + } else if (end < p_curr_blk->base
> + && ((end - align_base) >=
align)) {
> + if (free_block_init
> + ((void *)&p_new_blk,
align_base,
> + end - align_base) != 0)
> + return -ENOMEM;
> + p_new_blk->next = p_curr_blk;
> + if (p_prev_blk)
> + p_prev_blk->next =
p_new_blk;
> + else
> + p_mm->free_blocks[i] =
> + p_new_blk;
> + break;
> + }
> +
> + if (align_base < p_curr_blk->base
> + && end >= p_curr_blk->base)
> + p_curr_blk->base = align_base;
> +
> + /* if size of the free block is less
then
> + * alignment deletes that free block
from
> + * the free list. */
> + if ((p_curr_blk->end - p_curr_blk->base)
<
> + align) {
> + if (p_prev_blk)
> + p_prev_blk->next =
> + p_curr_blk->next;
> + else
> + p_mm->free_blocks[i] =
> + p_curr_blk->next;
> + kfree(p_curr_blk);
> + }
> + break;
> + } else {
> + p_prev_blk = p_curr_blk;
> + p_curr_blk = p_curr_blk->next;
> + }
> + }
> +
> + /* If no free block found to be updated, insert a new
free block
> + * to the end of the free list. */
> + if (!p_curr_blk && ((end - base) % align == 0)) {
> + if (free_block_init
> + ((void *)&p_new_blk, align_base, end - base)
!= 0)
> + return -ENOMEM;
> + if (p_prev_blk)
> + p_prev_blk->next = p_new_blk;
> + else
> + p_mm->free_blocks[i] = p_new_blk;
> + }
> +
> + /* Update boundaries of the new free block */
> + if (align == 1 && !p_new_blk) {
> + if (p_curr_blk && base > p_curr_blk->base)
> + base = p_curr_blk->base;
> + if (p_curr_blk && end < p_curr_blk->end)
> + end = p_curr_blk->end;
> + }
> + }
> +
> + return (0);
> +}
> +
> +/****************************************************************
> + * Routine: cut_free
> + *
> + * Description:
> + * Cuts a free block from hold_base to hold_end from the free
> lists.
> + * That is, it updates all free lists of the MM object do
> + * not include a block of memory from hold_base to hold_end.
> + * For each free lists it seek for a free block that holds
> + * either hold_base or hold_end. If such block is found it
> updates it.
> + *
> + * Arguments:
> + * p_mm - pointer to the MM object
> + * hold_base - base address of the allocated block
> + * hold_end - end address of the allocated block
> + *
> + * Return value:
> + * 0 is returned on success,
> + * otherwise returns an error code.
> + *
> + ****************************************************************/
> +static int cut_free(mm_t * p_mm, u32 hold_base, u32 hold_end)
> +{
> + free_block_t *p_prev_blk, *p_curr_blk, *p_new_blk;
> + u32 align_base, base, end, align;
> + int i;
> +
> + for (i = 0; i <= MAX_ALIGNMENT; i++) {
> + p_prev_blk = p_new_blk = 0;
> + p_curr_blk = p_mm->free_blocks[i];
> +
> + align = (u32) 0x1 << i;
> + align_base = MAKE_ALIGNED(hold_end, align);
> +
> + while (p_curr_blk) {
> + base = p_curr_blk->base;
> + end = p_curr_blk->end;
> +
> + if (hold_base <= base && hold_end <= end
> + && hold_end > base) {
> + if (align_base >= end
> + || (align_base < end
> + && (end - align_base) < align))
{
> + if (p_prev_blk)
> + p_prev_blk->next =
> + p_curr_blk->next;
> + else
> + p_mm->free_blocks[i] =
> + p_curr_blk->next;
> + kfree(p_curr_blk);
> + } else {
> + p_curr_blk->base = align_base;
> + }
> + break;
> + } else if (hold_base > base && hold_end <= end)
{
> + if ((hold_base - base) >= align) {
> + if (align_base < end
> + && (end - align_base) >=
align) {
> + if (free_block_init
> + ((void *)&p_new_blk,
> + align_base,
> + (end - align_base))
!= 0)
> + return -ENOMEM;
> + p_new_blk->next =
> + p_curr_blk->next;
> + p_curr_blk->next =
p_new_blk;
> + }
> + p_curr_blk->end = hold_base;
> + } else if (align_base < end
> + && (end - align_base) >=
align) {
> + p_curr_blk->base = align_base;
> + } else {
> + if (p_prev_blk)
> + p_prev_blk->next =
> + p_curr_blk->next;
> + else
> + p_mm->free_blocks[i] =
> + p_curr_blk->next;
> + kfree(p_curr_blk);
> + }
> + break;
> + } else {
> + p_prev_blk = p_curr_blk;
> + p_curr_blk = p_curr_blk->next;
> + }
> + }
> + }
> +
> + return (0);
> +}
> +
> +/****************************************************************
> + * Routine: add_busy
> + *
> + * Description:
> + * Adds a new busy block to the list of busy blocks. Note,
> + * that all busy blocks are ordered by their base address in
> + * the busy list.
> + *
> + * Arguments:
> + * MM - handler to the MM object
> + * p_new_busy_blk - pointer to the a busy block
> + *
> + * Return value:
> + * None.
> + *
> + ****************************************************************/
> +static void add_busy(mm_t * p_mm, busy_block_t * p_new_busy_blk)
> +{
> + busy_block_t *p_cur_busy_blk, *p_prev_busy_blk;
> +
> + /* finds a place of a new busy block in the list of busy blocks
*/
> + p_prev_busy_blk = 0;
> + p_cur_busy_blk = p_mm->busy_blocks;
> +
> + while (p_cur_busy_blk && p_new_busy_blk->base > p_cur_busy_blk-
> >base) {
> + p_prev_busy_blk = p_cur_busy_blk;
> + p_cur_busy_blk = p_cur_busy_blk->next;
> + }
> +
> + /* insert the new busy block into the list of busy blocks */
> + if (p_cur_busy_blk)
> + p_new_busy_blk->next = p_cur_busy_blk;
> + if (p_prev_busy_blk)
> + p_prev_busy_blk->next = p_new_busy_blk;
> + else
> + p_mm->busy_blocks = p_new_busy_blk;
> +
> +}
> +
> +/****************************************************************
> + * Routine: get_greater_align
> + *
> + * Description:
> + * Allocates a block of memory according to the given size
> + * and the alignment. That routine is called from the mm_get
> + * routine if the required alignment is grater then
> MAX_ALIGNMENT.
> + * In that case, it goes over free blocks of 64 byte align list
> + * and checks if it has the required size of bytes of the
> required
> + * alignment. If no blocks found returns ILLEGAL_BASE.
> + * After the block is found and data is allocated, it calls
> + * the internal cut_free routine to update all free lists
> + * do not include a just allocated block. Of course, each
> + * free list contains a free blocks with the same alignment.
> + * It is also creates a busy block that holds
> + * information about an allocated block.
> + *
> + * Arguments:
> + * MM - handle to the MM object
> + * size - size of the MM
> + * align - index as a power of two defines
> + * a required alignment that is grater then
> 64.
> + * name - the name that specifies an allocated block.
> + *
> + * Return value:
> + * base address of an allocated block.
> + * ILLEGAL_BASE if can't allocate a block
> + *
> + ****************************************************************/
> +static int get_greater_align(void *MM, u32 size, int align, char
> *name)
> +{
> + mm_t *p_mm = (mm_t *) MM;
> + free_block_t *p_free_blk;
> + busy_block_t *p_new_busy_blk;
> + u32 hold_base, hold_end, align_base = 0;
> + u32 ret;
> +
> + /* goes over free blocks of the 64 byte alignment list
> + * and look for a block of the suitable size and
> + * base address according to the alignment.
> + */
> + p_free_blk = p_mm->free_blocks[MAX_ALIGNMENT];
> +
> + while (p_free_blk) {
> + align_base = MAKE_ALIGNED(p_free_blk->base, align);
> +
> + /* the block is found if the aligned base inside the
block
> + * and has the anough size.
> + */
> + if (align_base >= p_free_blk->base &&
> + align_base < p_free_blk->end &&
> + size <= (p_free_blk->end - align_base))
> + break;
> + else
> + p_free_blk = p_free_blk->next;
> + }
> +
> + /* If such block isn't found */
> + if (!p_free_blk)
> + return -EBUSY;
> +
> + hold_base = align_base;
> + hold_end = align_base + size;
> +
> + /* init a new busy block */
> + if ((ret =
> + busy_block_init((void *)&p_new_busy_blk, hold_base, size,
> + name)) != 0)
> + return ret;
> +
> + /* calls Update routine to update a lists of free blocks */
> + if ((ret = cut_free(MM, hold_base, hold_end)) != 0)
> + return ret;
> +
> + /* insert the new busy block into the list of busy blocks */
> + add_busy(p_mm, p_new_busy_blk);
> +
> + return (hold_base);
> +}
> +
> +/
> **********************************************************************
> + * MM API routines
> set *
> +
> **********************************************************************
> /
> +int mm_init(void **MM, u32 base, u32 size)
> +{
> + mm_t *p_mm;
> + int i;
> + u32 new_base, new_size;
> +
> + /* Initializes a new MM object */
> + p_mm = (mm_t *) kmalloc(sizeof(mm_t), GFP_KERNEL);
> + if (p_mm == 0)
> + return -ENOMEM;
> +
> + /* initializes a new memory block */
> + if (mem_block_init((void *)&p_mm->mem_blocks, base, size) != 0)
> + return -ENOMEM;
> +
> + /* A busy list is empty */
> + p_mm->busy_blocks = 0;
> +
> + /*Initializes a new free block for each free list */
> + for (i = 0; i <= MAX_ALIGNMENT; i++) {
> + new_base = MAKE_ALIGNED(base, (0x1 << i));
> + new_size = size - (new_base - base);
> + if (free_block_init((void *)&p_mm->free_blocks[i],
> + new_base, new_size) != 0)
> + return -ENOMEM;
> + }
> +
> + *MM = p_mm;
> +
> + return (0);
> +}
> +
> +EXPORT_SYMBOL(mm_init);
> +
> +void mm_free(void *MM)
> +{
> + mm_t *p_mm = (mm_t *) MM;
> + mem_block_t *p_mem_blk;
> + busy_block_t *p_busy_blk;
> + free_block_t *p_free_blk;
> + void *p_blk;
> + int i;
> +
> + if (!p_mm)
> + return;
> +
> + /* release memory allocated for busy blocks */
> + p_busy_blk = p_mm->busy_blocks;
> + while (p_busy_blk) {
> + p_blk = p_busy_blk;
> + p_busy_blk = p_busy_blk->next;
> + kfree(p_blk);
> + }
> +
> + /* release memory allocated for free blocks */
> + for (i = 0; i <= MAX_ALIGNMENT; i++) {
> + p_free_blk = p_mm->free_blocks[i];
> + while (p_free_blk) {
> + p_blk = p_free_blk;
> + p_free_blk = p_free_blk->next;
> + kfree(p_blk);
> + }
> + }
> +
> + /* release memory allocated for memory blocks */
> + p_mem_blk = p_mm->mem_blocks;
> + while (p_mem_blk) {
> + p_blk = p_mem_blk;
> + p_mem_blk = p_mem_blk->next;
> + kfree(p_blk);
> + }
> +
> + /* release memory allocated for MM object itself */
> + kfree(p_mm);
> +}
> +
> +EXPORT_SYMBOL(mm_free);
> +
> +void *mm_get(void *MM, u32 size, int align, char *name)
> +{
> + mm_t *p_mm = (mm_t *) MM;
> + free_block_t *p_free_blk;
> + busy_block_t *p_new_busy_blk;
> + u32 hold_base, hold_end;
> + u32 i = 0, j = (u32) align;
> + u32 ret;
> +
> + if (!p_mm)
> + return ERR_PTR(-EINVAL);
> +
> + /* checks that align value is grater then zero */
> + if (align == 0)
> + return ERR_PTR(-EINVAL);
> +
> + /* checks if alignment is a power of two,
> + * if it correct and if the required size
> + * is multiple of the given alignment.
> + */
> + while ((j & 0x1) == 0) {
> + i++;
> + j = j >> 1;
> + }
> +
> + /* if the given alignment isn't power of two, returns an error
*/
> + if (j != 1)
> + return ERR_PTR(-EINVAL);
> +
> + if (i > MAX_ALIGNMENT)
> + return ERR_PTR(get_greater_align(MM, size, align,
name));
> +
> + /* look for a block of the size grater or equal to the
> + * required size.
> + */
> + p_free_blk = p_mm->free_blocks[i];
> + while (p_free_blk && (p_free_blk->end - p_free_blk->base) <
size)
> + p_free_blk = p_free_blk->next;
> +
> + /* If such block is found */
> + if (!p_free_blk)
> + return ERR_PTR(-ENOMEM);
> +
> + hold_base = p_free_blk->base;
> + hold_end = hold_base + size;
> +
> + /* init a new busy block */
> + if ((ret =
> + busy_block_init((void *)&p_new_busy_blk, hold_base, size,
> + name)) != 0)
> + return ERR_PTR(ret);
> +
> + /* calls Update routine to update a lists of free blocks */
> + if ((ret = cut_free(MM, hold_base, hold_end)) != 0)
> + return ERR_PTR(ret);
> +
> + /* insert the new busy block into the list of busy blocks */
> + add_busy(p_mm, p_new_busy_blk);
> +
> + return (void *)(hold_base);
> +}
> +
> +EXPORT_SYMBOL(mm_get);
> +
> +void *mm_get_force(void *MM, u32 base, u32 size, char *name)
> +{
> + mm_t *p_mm = (mm_t *) MM;
> + free_block_t *p_free_blk;
> + busy_block_t *p_new_busy_blk;
> + int blk_is_free = 0;
> + u32 ret;
> +
> + p_free_blk = p_mm->free_blocks[0];/* The biggest free blocks are
in
> + the free list with
alignment 1 */
> + while (p_free_blk) {
> + if (base >= p_free_blk->base
> + && (base + size) <= p_free_blk->end) {
> + blk_is_free = 1;
> + break;
> + } else
> + p_free_blk = p_free_blk->next;
> + }
> +
> + if (!blk_is_free)
> + return ERR_PTR(-ENOMEM);
> +
> + /* init a new busy block */
> + if ((ret =
> + busy_block_init((void *)&p_new_busy_blk, base, size, name))
!
> = 0)
> + return ERR_PTR(ret);
> +
> + /* calls Update routine to update a lists of free blocks */
> + if ((ret = cut_free(MM, base, base + size)) != 0)
> + return ERR_PTR(ret);
> +
> + /* insert the new busy block into the list of busy blocks */
> + add_busy(p_mm, p_new_busy_blk);
> + return (void *)(base);
> +}
> +
> +EXPORT_SYMBOL(mm_get_force);
> +
> +int mm_put(void *MM, u32 base)
> +{
> + mm_t *p_mm = (mm_t *) MM;
> + busy_block_t *p_busy_blk, *p_prev_busy_blk;
> + u32 size;
> + u32 ret;
> +
> + if (!p_mm)
> + return -EINVAL;
> +
> + /* Look for a busy block that have the given base value.
> + * That block will be returned back to the memory.
> + */
> + p_prev_busy_blk = 0;
> + p_busy_blk = p_mm->busy_blocks;
> + while (p_busy_blk && base != p_busy_blk->base) {
> + p_prev_busy_blk = p_busy_blk;
> + p_busy_blk = p_busy_blk->next;
> + }
> +
> + if (!p_busy_blk)
> + return -EINVAL;
> +
> + if ((ret = add_free(p_mm, p_busy_blk->base, p_busy_blk->end)) !=
0)
> + return ret;
> +
> + /* removes a busy block form the list of busy blocks */
> + if (p_prev_busy_blk)
> + p_prev_busy_blk->next = p_busy_blk->next;
> + else
> + p_mm->busy_blocks = p_busy_blk->next;
> +
> + size = p_busy_blk->end - p_busy_blk->base;
> +
> + kfree(p_busy_blk);
> +
> + return (0);
> +}
> +
> +EXPORT_SYMBOL(mm_put);
> +
> +void mm_dump(void *MM)
> +{
> + mm_t *p_mm = (mm_t *) MM;
> + free_block_t *p_free_blk;
> + busy_block_t *p_busy_blk;
> + int i;
> +
> + p_busy_blk = p_mm->busy_blocks;
> + printk(KERN_INFO "List of busy blocks:\n");
> + while (p_busy_blk) {
> + printk(KERN_INFO "\t0x%08x: (%s: b=0x%08x, e=0x%08x)\n",
> + (u32) p_busy_blk, p_busy_blk->name,
p_busy_blk->base,
> + p_busy_blk->end);
> + p_busy_blk = p_busy_blk->next;
> + }
> +
> + printk(KERN_INFO "Lists of free blocks according to
alignment:\n");
> + for (i = 0; i <= MAX_ALIGNMENT; i++) {
> + printk(KERN_INFO "%d alignment:\n", (0x1 << i));
> + p_free_blk = p_mm->free_blocks[i];
> + while (p_free_blk) {
> + printk(KERN_INFO "\t0x%08x: (b=0x%08x,
e=0x%08x)\n",
> + (u32) p_free_blk, p_free_blk->base,
> + p_free_blk->end);
> + p_free_blk = p_free_blk->next;
> + }
> + printk(KERN_INFO "\n");
> + }
> +}
> +
> +EXPORT_SYMBOL(mm_dump);
> diff --git a/arch/powerpc/sysdev/qe_lib/mm.h b/arch/powerpc/sysdev/
> qe_lib/mm.h
> new file mode 100644
> index 0000000..ab30080
> --- /dev/null
> +++ b/arch/powerpc/sysdev/qe_lib/mm.h
> @@ -0,0 +1,6 @@
> +int mm_init ( void **MM, u32 base, u32 size );
> +void mm_free (void * MM);
> +void *mm_get ( void * MM, u32 size, int align, char* name );
> +void *mm_get_force ( void * MM, u32 base, u32 size, char* name );
> +int mm_put ( void * MM, u32 base );
> +void mm_dump ( void * MM );
> diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/
> qe_lib/qe.c
> new file mode 100644
> index 0000000..0fbb54c
> --- /dev/null
> +++ b/arch/powerpc/sysdev/qe_lib/qe.c
> @@ -0,0 +1,181 @@
> +/*
> + * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights
> reserved.
> + *
> + * Author: Li Yang <[email protected]>
> + *
> + * Description:
> + * FSL QE SOC setup.
> + *
> + * Changelog:
> + * Jun 21, 2006 Initial version
> + *
> + * 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 Software Foundation; either version 2 of the License, or
> (at your
> + * option) any later version.
> + */
> +
> +#include <linux/config.h>
> +#include <linux/stddef.h>
> +#include <linux/kernel.h>
> +#include <linux/init.h>
> +#include <linux/errno.h>
> +#include <linux/major.h>
> +#include <linux/delay.h>
> +#include <linux/irq.h>
> +#include <linux/module.h>
> +#include <linux/device.h>
> +#include <linux/platform_device.h>
> +#include <linux/fsl_devices.h>
> +
> +#include <asm/system.h>
> +#include <asm/atomic.h>
> +#include <asm/io.h>
> +#include <asm/irq.h>
> +#include <asm/prom.h>
> +#include <sysdev/fsl_soc.h>
> +#include <mm/mmu_decl.h>
> +
> +static phys_addr_t qebase = -1;
> +
> +phys_addr_t get_qe_base(void)
> +{
> + struct device_node *qe;
> +
> + if (qebase != -1)
> + return qebase;
> +
> + qe = of_find_node_by_type(NULL, "qe");
> + if (qe) {
> + unsigned int size;
> + void *prop = get_property(qe, "reg", &size);
> + qebase = of_translate_address(qe, prop);
> + of_node_put(qe);
> + };
> +
> + return qebase;
> +}
> +
> +EXPORT_SYMBOL(get_qe_base);
> +
> +static int __init ucc_geth_of_init(void)
> +{
> + struct device_node *np;
> + unsigned int i, ucc_num;
> + struct platform_device *ugeth_dev;
> + struct resource res;
> + int ret;
> +
> + for (np = NULL, i = 0;
> + (np = of_find_compatible_node(np, "network", "ucc_geth"))
!=
> NULL;
> + i++) {
> + struct resource r[2];
> + struct device_node *phy, *mdio;
> + struct ucc_geth_platform_data ugeth_data;
> + unsigned int *id;
> + char *model;
> + void *mac_addr;
> + phandle *ph;
> +
> + memset(r, 0, sizeof(r));
> + memset(&ugeth_data, 0, sizeof(ugeth_data));
> +
> + ret = of_address_to_resource(np, 0, &r[0]);
> + if (ret)
> + goto err;
> +
> + ugeth_data.phy_reg_addr = r[0].start;
> + r[1].start = np->intrs[0].line;
> + r[1].end = np->intrs[0].line;
> + r[1].flags = IORESOURCE_IRQ;
> +
> + model = get_property(np, "model", NULL);
> + ucc_num = *((u32 *) get_property(np, "device-id",
NULL));
> + if ((strstr(model, "UCC") == NULL) ||
> + (ucc_num < 1) || (ucc_num > 8)) {
> + ret = -ENODEV;
> + goto err;
> + }
> +
> + ugeth_dev =
> + platform_device_register_simple("ucc_geth", ucc_num
- 1,
> + &r[0], np->n_intrs + 1);
> +
> + if (IS_ERR(ugeth_dev)) {
> + ret = PTR_ERR(ugeth_dev);
> + goto err;
> + }
> +
> + mac_addr = get_property(np, "mac-address", NULL);
> +
> + memcpy(ugeth_data.mac_addr, mac_addr, 6);
> +
> + ugeth_data.rx_clock = *((u32 *) get_property(np,
"rx-clock",
> + NULL));
> + ugeth_data.tx_clock = *((u32 *) get_property(np,
"tx-clock",
> + NULL));
> +
> + ph = (phandle *) get_property(np, "phy-handle", NULL);
> + phy = of_find_node_by_phandle(*ph);
> +
> + if (phy == NULL) {
> + ret = -ENODEV;
> + goto unreg;
> + }
> +
> + mdio = of_get_parent(phy);
> +
> + id = (u32 *) get_property(phy, "reg", NULL);
> + ret = of_address_to_resource(mdio, 0, &res);
> + if (ret) {
> + of_node_put(phy);
> + of_node_put(mdio);
> + goto unreg;
> + }
> +
> + ugeth_data.phy_id = *id;
> + ugeth_data.phy_interrupt = phy->intrs[0].line;
> + ugeth_data.phy_interface = *((u32 *) get_property(phy,
> + "interface", NULL));
> +
> + /* FIXME: Work around for early chip rev.
*/
> + /* There's a bug in initial chip rev(s) in the RGMII ac
*/
> + /* timing.
*/
> + /* The following compensates by writing to the reserved
*/
> + /* QE Port Output Hold Registers (CPOH1?).
*/
> + if ((ugeth_data.phy_interface == ENET_1000_RGMII) ||
> + (ugeth_data.phy_interface ==
ENET_100_RGMII) ||
> + (ugeth_data.phy_interface ==
ENET_10_RGMII)) {
> + u32 *tmp_reg = (u32 *) ioremap(get_immrbase()
> + + 0x14A8, 0x4);
> + u32 tmp_val = in_be32(tmp_reg);
> + if (ucc_num == 1)
> + out_be32(tmp_reg, tmp_val | 0x00003000);
> + else if (ucc_num == 2)
> + out_be32(tmp_reg, tmp_val | 0x0c000000);
> + iounmap(tmp_reg);
> + }
> +
> + if (phy->intrs[0].line != 0)
> + ugeth_data.board_flags |=
FSL_UGETH_BRD_HAS_PHY_INTR;
> +
> + of_node_put(phy);
> + of_node_put(mdio);
> +
> + ret =
> + platform_device_add_data(ugeth_dev, &ugeth_data,
> + sizeof(struct
> +
ucc_geth_platform_data));
> + if (ret)
> + goto unreg;
> + }
> +
> + return 0;
> +
> +unreg:
> + platform_device_unregister(ugeth_dev);
> +err:
> + return ret;
> +}
> +
> +arch_initcall(ucc_geth_of_init);
> diff --git a/arch/powerpc/sysdev/qe_lib/qe_common.c b/arch/powerpc/
> sysdev/qe_lib/qe_common.c
> new file mode 100644
> index 0000000..cd0aca9
> --- /dev/null
> +++ b/arch/powerpc/sysdev/qe_lib/qe_common.c
> @@ -0,0 +1,401 @@
> +/*
> + * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights
> reserved.
> + *
> + * Author: Shlomi Gridish <[email protected]>
> + *
> + * Description:
> + * General Purpose functions for the global management of the
> + * QUICC Engine (QE).
> + *
> + * Changelog:
> + * Jun 28, 2006 Li Yang <[email protected]>
> + * - Reorganized as qe_lib
> + * - Merged to powerpc arch; add device tree support
> + * - Style fixes
> + *
> + * 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 Software Foundation; either version 2 of the License, or
> (at your
> + * option) any later version.
> + */
> +#undef USE_RHEAP
> +#include <linux/errno.h>
> +#include <linux/sched.h>
> +#include <linux/kernel.h>
> +#include <linux/param.h>
> +#include <linux/string.h>
> +#include <linux/mm.h>
> +#include <linux/interrupt.h>
> +#include <linux/bootmem.h>
> +#include <linux/module.h>
> +#include <linux/delay.h>
> +#include <asm/irq.h>
> +#include <asm/page.h>
> +#include <asm/pgtable.h>
> +#include <asm/immap_qe.h>
> +#include <asm/qe.h>
> +#include <asm/prom.h>
> +#ifdef USE_RHEAP
> +#include <asm/rheap.h>
> +#else
> +#include "mm.h"
> +#endif /* USE_RHEAP */
> +
> +/* QE snum state
> +*/
> +typedef enum qe_snum_state {
> + QE_SNUM_STATE_USED, /* used */
> + QE_SNUM_STATE_FREE /* free */
> +} qe_snum_state_e;
> +
> +/* QE snum
> +*/
> +typedef struct qe_snum {
> + u8 num; /* snum */
> + qe_snum_state_e state; /* state */
> +} qe_snum_t;
> +
> +/* We allocate this here because it is used almost exclusively for
> + * the communication processor devices.
> + */
> +EXPORT_SYMBOL(qe_immr);
> +qe_map_t *qe_immr = NULL;
> +static qe_snum_t snums[QE_NUM_OF_SNUM]; /* Dynamically allocated
> SNUMs */
> +
> +static void qe_snums_init(void);
> +static void qe_muram_init(void);
> +static int qe_sdma_init(void);
> +
> +void qe_reset(void)
> +{
> + if (qe_immr == NULL)
> + qe_immr = (qe_map_t *) ioremap(get_qe_base(),
QE_IMMAP_SIZE);
> +
> + qe_snums_init();
> +
> + qe_issue_cmd(QE_RESET, QE_CR_SUBBLOCK_INVALID,
> + (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
> +
> + /* Reclaim the MURAM memory for our use. */
> + qe_muram_init();
> +
> +#ifdef USE_RHEAP
> + if (qe_sdma_init())
> + panic("sdma init failed!");
> +#endif /* USE_RHEAP */
> +}
> +
> +EXPORT_SYMBOL(qe_issue_cmd);
> +int qe_issue_cmd(uint cmd, uint device, u8 mcn_protocol, u32
> cmd_input)
> +{
> + unsigned long flags;
> + u32 cecr;
> + u8 mcn_shift = 0, dev_shift = 0;
> +
> + local_irq_save(flags);
> + if (cmd == QE_RESET) {
> + out_be32(&qe_immr->cp.cecr, (u32) (cmd | QE_CR_FLG));
> + } else {
> + if (cmd == QE_ASSIGN_PAGE) {
> + /* Here device is the SNUM, not sub-block */
> + dev_shift = QE_CR_SNUM_SHIFT;
> + } else if (cmd == QE_ASSIGN_RISC) {
> + /* Here device is the SNUM, and mcnProtocol is
> + * e_QeCmdRiscAssignment value */
> + dev_shift = QE_CR_SNUM_SHIFT;
> + mcn_shift = QE_CR_MCN_RISC_ASSIGN_SHIFT;
> + } else {
> + if (device == QE_CR_SUBBLOCK_USB)
> + mcn_shift = QE_CR_MCN_USB_SHIFT;
> + else
> + mcn_shift = QE_CR_MCN_NORMAL_SHIFT;
> + }
> +
> + out_be32(&qe_immr->cp.cecdr,
> + immrbar_virt_to_phys((void *)cmd_input));
> + out_be32(&qe_immr->cp.cecr,
> + (cmd | QE_CR_FLG | ((u32) device << dev_shift)
| (u32)
> + mcn_protocol << mcn_shift));
> + }
> +
> + /* wait for the QE_CR_FLG to clear */
> + do {
> + cecr = in_be32(&qe_immr->cp.cecr);
> + } while (cecr & QE_CR_FLG);
> + local_irq_restore(flags);
> +
> + return 0;
> +}
> +
> +/* Set a baud rate generator. This needs lots of work. There are
> + * 16 BRGs, which can be connected to the QE channels or output
> + * as clocks. The BRGs are in two different block of internal
> + * memory mapped space.
> + * The baud rate clock is the system clock divided by something.
> + * It was set up long ago during the initial boot phase and is
> + * is given to us.
> + * Baud rate clocks are zero-based in the driver code (as that maps
> + * to port numbers). Documentation uses 1-based numbering.
> + */
> +static unsigned int brg_clk = 0;
> +
> +unsigned int get_brg_clk(void)
> +{
> + struct device_node *qe;
> + if (brg_clk)
> + return brg_clk;
> +
> + qe = of_find_node_by_type(NULL, "qe");
> + if (qe) {
> + unsigned int size;
> + u32 *prop = (u32 *) get_property(qe, "brg-frequency",
&size);
> + brg_clk = *prop;
> + of_node_put(qe);
> + };
> + return brg_clk;
> +}
> +
> +/* This function is used by UARTS, or anything else that uses a 16x
> + * oversampled clock.
> + */
> +void qe_setbrg(uint brg, uint rate)
> +{
> + volatile uint *bp;
> + u32 divisor;
> + int div16 = 0;
> +
> + bp = (uint *) & qe_immr->brg.brgc1;
> + bp += brg;
> +
> + divisor = (get_brg_clk() / rate);
> + if (divisor > QE_BRGC_DIVISOR_MAX + 1) {
> + div16 = 1;
> + divisor /= 16;
> + }
> +
> + *bp = ((divisor - 1) << QE_BRGC_DIVISOR_SHIFT) | QE_BRGC_ENABLE;
> + if (div16)
> + *bp |= QE_BRGC_DIV16;
> +}
> +
> +static void qe_snums_init(void)
> +{
> + int i;
> +
> + /* Initialize the SNUMs array. */
> + for (i = 0; i < QE_NUM_OF_SNUM; i++)
> + snums[i].state = QE_SNUM_STATE_FREE;
> +
> + /* Initialize SNUMs (thread serial numbers) according to QE
> + * spec chapter 4, SNUM table */
> + i = 0;
> + snums[i++].num = 0x04;
> + snums[i++].num = 0x05;
> + snums[i++].num = 0x0C;
> + snums[i++].num = 0x0D;
> + snums[i++].num = 0x14;
> + snums[i++].num = 0x15;
> + snums[i++].num = 0x1C;
> + snums[i++].num = 0x1D;
> + snums[i++].num = 0x24;
> + snums[i++].num = 0x25;
> + snums[i++].num = 0x2C;
> + snums[i++].num = 0x2D;
> + snums[i++].num = 0x34;
> + snums[i++].num = 0x35;
> + snums[i++].num = 0x88;
> + snums[i++].num = 0x89;
> + snums[i++].num = 0x98;
> + snums[i++].num = 0x99;
> + snums[i++].num = 0xA8;
> + snums[i++].num = 0xA9;
> + snums[i++].num = 0xB8;
> + snums[i++].num = 0xB9;
> + snums[i++].num = 0xC8;
> + snums[i++].num = 0xC9;
> + snums[i++].num = 0xD8;
> + snums[i++].num = 0xD9;
> + snums[i++].num = 0xE8;
> + snums[i++].num = 0xE9;
> +}
> +
> +int qe_get_snum(void)
> +{
> + unsigned long flags;
> + int snum = -EBUSY;
> + int i;
> +
> + local_irq_save(flags);
> + for (i = 0; i < QE_NUM_OF_SNUM; i++) {
> + if (snums[i].state == QE_SNUM_STATE_FREE) {
> + snums[i].state = QE_SNUM_STATE_USED;
> + snum = snums[i].num;
> + break;
> + }
> + }
> + local_irq_restore(flags);
> +
> + return snum;
> +}
> +
> +EXPORT_SYMBOL(qe_get_snum);
> +
> +void qe_put_snum(u8 snum)
> +{
> + int i;
> +
> + for (i = 0; i < QE_NUM_OF_SNUM; i++) {
> + if (snums[i].num == snum) {
> + snums[i].state = QE_SNUM_STATE_FREE;
> + break;
> + }
> + }
> +}
> +
> +EXPORT_SYMBOL(qe_put_snum);
> +
> +static int qe_sdma_init(void)
> +{
> + sdma_t *sdma = &qe_immr->sdma;
> + uint sdma_buf_offset;
> +
> + if (!sdma)
> + return -ENODEV;
> +
> + /* allocate 2 internal temporary buffers (512 bytes size each)
for
> + * the SDMA */
> + sdma_buf_offset = qe_muram_alloc(512 * 2, 64);
> + if (IS_MURAM_ERR(sdma_buf_offset))
> + return -ENOMEM;
> +
> + out_be32(&sdma->sdebcr, sdma_buf_offset & QE_SDEBCR_BA_MASK);
> + out_be32(&sdma->sdmr, (QE_SDMR_GLB_1_MSK | (0x1 >>
> + QE_SDMR_CEN_SHIFT)));
> +
> + return 0;
> +}
> +
> +/*
> + * muram_alloc / muram_free bits.
> + */
> +static spinlock_t qe_muram_lock;
> +#ifdef USE_RHEAP
> +/* 16 blocks should be enough to satisfy all requests
> + * until the memory subsystem goes up... */
> +static rh_block_t qe_boot_muram_rh_block[16];
> +static rh_info_t qe_muram_info;
> +#else
> +static void *mm = NULL;
> +#endif /* USE_RHEAP */
> +
> +static void qe_muram_init(void)
> +{
> + spin_lock_init(&qe_muram_lock);
> +
> +#ifdef USE_RHEAP
> + /* initialize the info header */
> + rh_init(&qe_muram_info, 1,
> + sizeof(qe_boot_muram_rh_block) /
> + sizeof(qe_boot_muram_rh_block[0]),
qe_boot_muram_rh_block);
> +
> + /* Attach the usable muram area */
> + /* XXX: This is actually crap. QE_DATAONLY_BASE and
> + * QE_DATAONLY_SIZE is only a subset of the available muram. It
> + * varies with the processor and the microcode patches
activated.
> + * But the following should be at least safe.
> + */
> + rh_attach_region(&qe_muram_info,
> + (void *)QE_MURAM_DATAONLY_BASE,
> + QE_MURAM_DATAONLY_SIZE);
> +#else
> +#endif /* USE_RHEAP */
> +}
> +
> +/* This function returns an index into the MURAM area.
> + */
> +uint qe_muram_alloc(uint size, uint align)
> +{
> + void *start;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&qe_muram_lock, flags);
> +#ifdef USE_RHEAP
> + qe_muram_info.alignment = align;
> + start = rh_alloc(&qe_muram_info, size, "QE");
> +#else
> + if (!mm) {
> + mm_init(&mm, (u32)
qe_muram_addr(QE_MURAM_DATAONLY_BASE),
> + QE_MURAM_DATAONLY_SIZE);
> + if (qe_sdma_init())
> + panic("sdma init failed!");
> +
> + }
> + start = mm_get(mm, (u32) size, (int)align, "QE");
> + if (!IS_MURAM_ERR((u32) start))
> + start = (void *)((u32) start - (u32) qe_immr->muram);
> +#endif /* USE_RHEAP */
> + spin_unlock_irqrestore(&qe_muram_lock, flags);
> +
> + return (uint) start;
> +}
> +
> +EXPORT_SYMBOL(qe_muram_alloc);
> +
> +int qe_muram_free(uint offset)
> +{
> + int ret;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&qe_muram_lock, flags);
> +#ifdef USE_RHEAP
> + ret = rh_free(&qe_muram_info, (void *)offset);
> +#else
> + ret = mm_put(mm, (u32) qe_muram_addr(offset));
> +#endif /* USE_RHEAP */
> + spin_unlock_irqrestore(&qe_muram_lock, flags);
> +
> + return ret;
> +}
> +
> +EXPORT_SYMBOL(qe_muram_free);
> +
> +/* not sure if this is ever needed */
> +uint qe_muram_alloc_fixed(uint offset, uint size, uint align)
> +{
> + void *start;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&qe_muram_lock, flags);
> +#ifdef USE_RHEAP
> + qe_muram_info.alignment = align;
> + start =
> + rh_alloc_fixed(&qe_muram_info, (void *)offset, size,
> "commproc");
> +#else
> + start = mm_get_force(mm, (u32) offset, (u32) size, "QE");
> + if (!IS_MURAM_ERR((u32) start))
> + start = (void *)((u32) start - (u32) qe_immr->muram);
> +#endif /* USE_RHEAP */
> + spin_unlock_irqrestore(&qe_muram_lock, flags);
> +
> + return (uint) start;
> +}
> +
> +EXPORT_SYMBOL(qe_muram_alloc_fixed);
> +
> +void qe_muram_dump(void)
> +{
> +#ifdef USE_RHEAP
> + rh_dump(&qe_muram_info);
> +#else
> + mm_dump(mm);
> +#endif /* USE_RHEAP */
> +}
> +
> +EXPORT_SYMBOL(qe_muram_dump);
> +
> +void *qe_muram_addr(uint offset)
> +{
> + return (void *)&qe_immr->muram[offset];
> +}
> +
> +EXPORT_SYMBOL(qe_muram_addr);
> diff --git a/arch/powerpc/sysdev/qe_lib/qe_ic.c b/arch/powerpc/
> sysdev/qe_lib/qe_ic.c
> new file mode 100644
> index 0000000..465630e
> --- /dev/null
> +++ b/arch/powerpc/sysdev/qe_lib/qe_ic.c
> @@ -0,0 +1,487 @@
> +/*
> + * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights
> reserved.
> + *
> + * Author: Shlomi Gridish <[email protected]>
> + *
> + * Description:
> + * QE Interrupt Controller routines implementations.
> + *
> + * Changelog:
> + * Jun 28, 2006 Li Yang <[email protected]>
> + * - Reorganized as qe_lib
> + * - Merged to powerpc arch; add device tree support
> + * - Style fixes
> + *
> + * 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 Software Foundation; either version 2 of the License, or
> (at your
> + * option) any later version.
> + */
> +#include <linux/kernel.h>
> +#include <linux/init.h>
> +#include <linux/errno.h>
> +#include <linux/reboot.h>
> +#include <linux/slab.h>
> +#include <linux/stddef.h>
> +#include <linux/sched.h>
> +#include <linux/signal.h>
> +#include <linux/sysdev.h>
> +#include <linux/interrupt.h>
> +
> +#include <asm/irq.h>
> +#include <asm/io.h>
> +#include <asm/qe_ic.h>
> +
> +#include "qe_ic.h"
> +
> +static struct qe_ic_private p_qe_ic;
> +static struct qe_ic_private *primary_qe_ic;
> +
> +static struct qe_ic_info qe_ic_info[] = {
> + [1] = {
> + .mask = 0x00008000,
> + .qimr = 1,
> + .pri_code = 0},
> + [2] = {
> + .mask = 0x00004000,
> + .qimr = 1,
> + .pri_code = 1},
> + [3] = {
> + .mask = 0x00002000,
> + .qimr = 1,
> + .pri_code = 2},
> + [10] = {
> + .mask = 0x00000040,
> + .qimr = 1,
> + .pri_code = 1},
> + [11] = {
> + .mask = 0x00000020,
> + .qimr = 1,
> + .pri_code = 2},
> + [12] = {
> + .mask = 0x00000010,
> + .qimr = 1,
> + .pri_code = 3},
> + [13] = {
> + .mask = 0x00000008,
> + .qimr = 1,
> + .pri_code = 4},
> + [14] = {
> + .mask = 0x00000004,
> + .qimr = 1,
> + .pri_code = 5},
> + [15] = {
> + .mask = 0x00000002,
> + .qimr = 1,
> + .pri_code = 6},
> + [20] = {
> + .mask = 0x10000000,
> + .qimr = 0,
> + .pri_code = 3},
> + [25] = {
> + .mask = 0x00800000,
> + .qimr = 0,
> + .pri_code = 0},
> + [26] = {
> + .mask = 0x00400000,
> + .qimr = 0,
> + .pri_code = 1},
> + [27] = {
> + .mask = 0x00200000,
> + .qimr = 0,
> + .pri_code = 2},
> + [28] = {
> + .mask = 0x00100000,
> + .qimr = 0,
> + .pri_code = 3},
> + [32] = {
> + .mask = 0x80000000,
> + .qimr = 1,
> + .pri_code = 0},
> + [33] = {
> + .mask = 0x40000000,
> + .qimr = 1,
> + .pri_code = 1},
> + [34] = {
> + .mask = 0x20000000,
> + .qimr = 1,
> + .pri_code = 2},
> + [35] = {
> + .mask = 0x10000000,
> + .qimr = 1,
> + .pri_code = 3},
> + [36] = {
> + .mask = 0x08000000,
> + .qimr = 1,
> + .pri_code = 4},
> + [40] = {
> + .mask = 0x00800000,
> + .qimr = 1,
> + .pri_code = 0},
> + [41] = {
> + .mask = 0x00400000,
> + .qimr = 1,
> + .pri_code = 1},
> + [42] = {
> + .mask = 0x00200000,
> + .qimr = 1,
> + .pri_code = 2},
> + [43] = {
> + .mask = 0x00100000,
> + .qimr = 1,
> + .pri_code = 3},
> +};
> +
> +struct hw_interrupt_type qe_ic = {
> + .typename = "QE IC",
> + .enable = qe_ic_enable_irq,
> + .disable = qe_ic_disable_irq,
> + .ack = qe_ic_disable_irq_and_ack,
> + .end = qe_ic_end_irq,
> +};
> +
> +static int qe_ic_get_low_irq(struct pt_regs *regs)
> +{
> + struct qe_ic_private *p_qe_ic = primary_qe_ic;
> + int irq = -1;
> +
> + /* get the low byte of SIVEC to get the interrupt source vector.
*/
> + irq = (in_be32(&p_qe_ic->regs->qivec) >> 24) >> 2;
> +
> + if (irq == 0) /* 0 --> no irq is pending */
> + return -1;
> +
> + return irq + p_qe_ic->irq_offset;
> +}
> +
> +static int qe_ic_get_high_irq(struct pt_regs *regs)
> +{
> + struct qe_ic_private *p_qe_ic = primary_qe_ic;
> + int irq = -1;
> +
> + /* get the high byte of SIVEC to get the interrupt source
vector. */
> + irq = (in_be32(&p_qe_ic->regs->qhivec) >> 24) >> 2;
> +
> + if (irq == 0) /* 0 --> no irq is pending */
> + return -1;
> +
> + return irq + p_qe_ic->irq_offset;
> +}
> +
> +static irqreturn_t qe_ic_cascade_low(int irq, void *dev_id,
> + struct pt_regs *regs)
> +{
> + while ((irq = qe_ic_get_low_irq(regs)) >= 0)
> + __do_IRQ(irq, regs);
> + return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t qe_ic_cascade_high(int irq, void *dev_id,
> + struct pt_regs *regs)
> +{
> + while ((irq = qe_ic_get_high_irq(regs)) >= 0)
> + __do_IRQ(irq, regs);
> + return IRQ_HANDLED;
> +}
> +
> +static struct irqaction qe_ic_low_irqaction = {
> + .handler = qe_ic_cascade_low,
> + .flags = SA_INTERRUPT,
> + .mask = CPU_MASK_NONE,
> + .name = "qe_ic_cascade_low",
> +};
> +
> +static struct irqaction qe_ic_high_irqaction = {
> + .handler = qe_ic_cascade_high,
> + .flags = SA_INTERRUPT,
> + .mask = CPU_MASK_NONE,
> + .name = "qe_ic_cascade_high",
> +};
> +
> +int qe_ic_init(phys_addr_t phys_addr,
> + unsigned int flags, unsigned int irq_offset)
> +{
> + struct qe_ic_map *regs;
> + u8 grp, pri, shift = 0;
> + u32 tmp_qicr = 0, tmp_qricr = 0, tmp_qicnr = 0, tmp_mask;
> + int i, high_hctive = 0;
> + const u32 high_signal = 2;
> +
> + primary_qe_ic = &p_qe_ic;
> + memset(primary_qe_ic, 0, sizeof(struct qe_ic_private));
> +
> + /* initialize QE interrupt controller registers */
> + primary_qe_ic->regs = regs =
> + (struct qe_ic_map *)ioremap(phys_addr, QE_IC_SIZE);
> + primary_qe_ic->irq_offset = irq_offset;
> +
> + /* default priority scheme is grouped. If spread mode is */
> + /* required, configure sicr accordingly. */
> + if (flags & QE_IC_SPREADMODE_GRP_W)
> + tmp_qicr |= QICR_GWCC;
> + if (flags & QE_IC_SPREADMODE_GRP_X)
> + tmp_qicr |= QICR_GXCC;
> + if (flags & QE_IC_SPREADMODE_GRP_Y)
> + tmp_qicr |= QICR_GYCC;
> + if (flags & QE_IC_SPREADMODE_GRP_Z)
> + tmp_qicr |= QICR_GZCC;
> + if (flags & QE_IC_SPREADMODE_GRP_RISCA)
> + tmp_qicr |= QICR_GRTA;
> + if (flags & QE_IC_SPREADMODE_GRP_RISCB)
> + tmp_qicr |= QICR_GRTB;
> +
> + /* choose destination signal for highest priority interrupt */
> + if (flags & QE_IC_HIGH_SIGNAL) {
> + tmp_qicr |= (high_signal << QICR_HPIT_SHIFT);
> + high_hctive = 1;
> + }
> +
> + out_be32(®s->qicr, tmp_qicr);
> +
> + tmp_mask = (1 << QE_IC_GRP_W_DEST_SIGNAL_SHIFT);
> + /* choose destination signal for highest priority interrupt in
each
> + * group */
> + for (grp = 0; grp < NUM_OF_QE_IC_GROUPS; grp++) {
> + /* the first 2 priorities in each group have a choice of
> + * destination signal */
> + for (pri = 0; pri <= 1; pri++) {
> + if (flags & ((tmp_mask << (grp << 1)) << pri)) {
> + /* indicate whether QE High signal is
> + * required */
> + if (!high_hctive)
> + high_hctive = 1;
> +
> + /* The location of the bits relevant to
> + * priority 0 in the */
> + /* registers is always 2 bits left
comparing
> + * to priority 1. */
> + if (pri == 0)
> + shift = 2;
> +
> + switch (grp) {
> + case (QE_IC_GRP_W):
> + shift += QICNR_WCC1T_SHIFT;
> + tmp_qicnr |= high_signal <<
shift;
> + break;
> + case (QE_IC_GRP_X):
> + shift += QICNR_XCC1T_SHIFT;
> + tmp_qicnr |= high_signal <<
shift;
> + break;
> + case (QE_IC_GRP_Y):
> + shift += QICNR_YCC1T_SHIFT;
> + tmp_qicnr |= high_signal <<
shift;
> + break;
> + case (QE_IC_GRP_Z):
> + shift += QICNR_ZCC1T_SHIFT;
> + tmp_qicnr |= high_signal <<
shift;
> + break;
> + case (QE_IC_GRP_RISCA):
> + shift += QRICR_RTA1T_SHIFT;
> + tmp_qricr |= high_signal <<
shift;
> + break;
> + case (QE_IC_GRP_RISCB):
> + shift += QRICR_RTB1T_SHIFT;
> + tmp_qricr |= high_signal <<
shift;
> + break;
> + default:
> + break;
> + }
> + }
> + }
> + }
> +
> + if (tmp_qicnr)
> + out_be32(®s->qicnr, tmp_qicnr);
> + if (tmp_qricr)
> + out_be32(®s->qricr, tmp_qricr);
> +
> + for (i = primary_qe_ic->irq_offset;
> + i < (NR_QE_IC_INTS + primary_qe_ic->irq_offset); i++) {
> + irq_desc[i].handler = &qe_ic;
> + irq_desc[i].status = IRQ_LEVEL;
> + }
> +
> + /* register QE_IC interrupt controller in the a higher hirarchy
> + * controller */
> + setup_irq(IRQ_QE_LOW, &qe_ic_low_irqaction);
> +
> + if (high_hctive)
> + /* register QE_IC high interrupt source in the higher
> + * hirarchy controller */
> + setup_irq(IRQ_QE_HIGH, &qe_ic_high_irqaction);
> +
> + printk("QE IC (%d IRQ sources) at %p\n", NR_QE_IC_INTS,
> + primary_qe_ic->regs);
> + return 0;
> +}
> +
> +void qe_ic_free(void)
> +{
> +}
> +
> +void qe_ic_enable_irq(unsigned int irq)
> +{
> + struct qe_ic_private *p_qe_ic = primary_qe_ic;
> + unsigned int src = irq - p_qe_ic->irq_offset;
> + u32 qimr;
> +
> + if (qe_ic_info[src].qimr) {
> + qimr = in_be32(&((struct qe_ic_private
*)p_qe_ic)->regs->qimr);
> + out_be32(&((struct qe_ic_private *)p_qe_ic)->regs->qimr,
> + qimr | (qe_ic_info[src].mask));
> + } else {
> + qimr = in_be32(&((struct qe_ic_private
*)p_qe_ic)->regs->qrimr);
> + out_be32(&((struct qe_ic_private
*)p_qe_ic)->regs->qrimr,
> + qimr | (qe_ic_info[src].mask));
> + }
> +}
> +
> +void qe_ic_disable_irq(unsigned int irq)
> +{
> + struct qe_ic_private *p_qe_ic = primary_qe_ic;
> + unsigned int src = irq - p_qe_ic->irq_offset;
> + u32 qimr;
> +
> + if (qe_ic_info[src].qimr) {
> + qimr = in_be32(&((struct qe_ic_private
*)p_qe_ic)->regs->qimr);
> + out_be32(&((struct qe_ic_private *)p_qe_ic)->regs->qimr,
> + qimr & ~(qe_ic_info[src].mask));
> + } else {
> + qimr = in_be32(&((struct qe_ic_private
*)p_qe_ic)->regs->qrimr);
> + out_be32(&((struct qe_ic_private
*)p_qe_ic)->regs->qrimr,
> + qimr & ~(qe_ic_info[src].mask));
> + }
> +}
> +
> +void qe_ic_disable_irq_and_ack(unsigned int irq)
> +{
> + qe_ic_disable_irq(irq);
> +}
> +
> +void qe_ic_end_irq(unsigned int irq)
> +{
> +
> + if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))
> + && irq_desc[irq].action)
> + qe_ic_enable_irq(irq);
> +}
> +
> +void qe_ic_modify_highest_priority(unsigned int irq)
> +{
> + struct qe_ic_private *p_qe_ic = primary_qe_ic;
> + unsigned int src = irq - p_qe_ic->irq_offset;
> + u32 tmp_qicr = 0;
> +
> + tmp_qicr = in_be32(&p_qe_ic->regs->qicr);
> + out_be32(&p_qe_ic->regs->qicr, (u32) (tmp_qicr | ((u8) src <<
24)));
> +}
> +
> +void qe_ic_modify_priority(enum qe_ic_grp_id grp,
> + unsigned int pri0,
> + unsigned int pri1,
> + unsigned int pri2,
> + unsigned int pri3,
> + unsigned int pri4,
> + unsigned int pri5,
> + unsigned int pri6, unsigned int pri7)
> +{
> + struct qe_ic_private *p_qe_ic = primary_qe_ic;
> + volatile u32 *p_qip = 0;
> + u32 tmp_qip = 0;
> + u8 tmp_array[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
> + signed char code_array[8], i = 0, j = 0;
> +
> + code_array[0] = (signed char)(pri0 ? qe_ic_info[pri0].pri_code :
> -1);
> + code_array[1] = (signed char)(pri1 ? qe_ic_info[pri1].pri_code :
> -1);
> + code_array[2] = (signed char)(pri2 ? qe_ic_info[pri2].pri_code :
> -1);
> + code_array[3] = (signed char)(pri3 ? qe_ic_info[pri3].pri_code :
> -1);
> + code_array[4] = (signed char)(pri4 ? qe_ic_info[pri4].pri_code :
> -1);
> + code_array[5] = (signed char)(pri5 ? qe_ic_info[pri5].pri_code :
> -1);
> + code_array[6] = (signed char)(pri6 ? qe_ic_info[pri6].pri_code :
> -1);
> + code_array[7] = (signed char)(pri7 ? qe_ic_info[pri7].pri_code :
> -1);
> +
> + for (i = 0; i < 8; i++) {
> + if (code_array[i] == -1)
> + break;
> + tmp_array[code_array[i]] = 1;
> + }
> +
> + for (; i < 8; i++) {
> + while (tmp_array[j] && j < 8)
> + j++;
> + code_array[i] = j;
> + tmp_array[j] = 1;
> + }
> +
> + tmp_qip = (u32) (code_array[0] << QIPCC_SHIFT_PRI0 |
> + code_array[1] << QIPCC_SHIFT_PRI1 |
> + code_array[2] << QIPCC_SHIFT_PRI2 |
> + code_array[3] << QIPCC_SHIFT_PRI3 |
> + code_array[4] << QIPCC_SHIFT_PRI4 |
> + code_array[5] << QIPCC_SHIFT_PRI5 |
> + code_array[6] << QIPCC_SHIFT_PRI6 |
> + code_array[7] << QIPCC_SHIFT_PRI7);
> +
> + switch (grp) {
> + case (QE_IC_GRP_W):
> + p_qip = &(p_qe_ic->regs->qipwcc);
> + break;
> + case (QE_IC_GRP_X):
> + p_qip = &(p_qe_ic->regs->qipxcc);
> + break;
> + case (QE_IC_GRP_Y):
> + p_qip = &(p_qe_ic->regs->qipycc);
> + break;
> + case (QE_IC_GRP_Z):
> + p_qip = &(p_qe_ic->regs->qipzcc);
> + break;
> + case (QE_IC_GRP_RISCA):
> + p_qip = &(p_qe_ic->regs->qiprta);
> + break;
> + case (QE_IC_GRP_RISCB):
> + p_qip = &(p_qe_ic->regs->qiprtb);
> + break;
> + default:
> + break;
> + }
> +
> + out_be32(p_qip, tmp_qip);
> +}
> +
> +void qe_ic_dump_regs(void)
> +{
> + struct qe_ic_private *p_qe_ic = primary_qe_ic;
> +
> + printk(KERN_INFO "QE IC registars:\n");
> + printk(KERN_INFO "Base address: 0x%08x\n", (u32) p_qe_ic->regs);
> + printk(KERN_INFO "qicr : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qicr,
in_be32(&p_qe_ic->regs->qicr));
> + printk(KERN_INFO "qivec : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qivec, in_be32(&p_qe_ic->regs-
> >qivec));
> + printk(KERN_INFO "qripnr: addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qripnr, in_be32(&p_qe_ic->regs-
> >qripnr));
> + printk(KERN_INFO "qipnr : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qipnr, in_be32(&p_qe_ic->regs-
> >qipnr));
> + printk(KERN_INFO "qipxcc: addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qipxcc, in_be32(&p_qe_ic->regs-
> >qipxcc));
> + printk(KERN_INFO "qipycc: addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qipycc, in_be32(&p_qe_ic->regs-
> >qipycc));
> + printk(KERN_INFO "qipwcc: addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qipwcc, in_be32(&p_qe_ic->regs-
> >qipwcc));
> + printk(KERN_INFO "qipzcc: addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qipzcc, in_be32(&p_qe_ic->regs-
> >qipzcc));
> + printk(KERN_INFO "qimr : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qimr,
in_be32(&p_qe_ic->regs->qimr));
> + printk(KERN_INFO "qrimr : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qrimr, in_be32(&p_qe_ic->regs-
> >qrimr));
> + printk(KERN_INFO "qicnr : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qicnr, in_be32(&p_qe_ic->regs-
> >qicnr));
> + printk(KERN_INFO "qiprta: addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qiprta, in_be32(&p_qe_ic->regs-
> >qiprta));
> + printk(KERN_INFO "qiprtb: addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qiprtb, in_be32(&p_qe_ic->regs-
> >qiprtb));
> + printk(KERN_INFO "qricr : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qricr, in_be32(&p_qe_ic->regs-
> >qricr));
> + printk(KERN_INFO "qhivec: addr - 0x%08x, val - 0x%08x\n",
> + (u32) & p_qe_ic->regs->qhivec, in_be32(&p_qe_ic->regs-
> >qhivec));
> +}
> diff --git a/arch/powerpc/sysdev/qe_lib/qe_ic.h b/arch/powerpc/
> sysdev/qe_lib/qe_ic.h
> new file mode 100644
> index 0000000..6662ad2
> --- /dev/null
> +++ b/arch/powerpc/sysdev/qe_lib/qe_ic.h
> @@ -0,0 +1,83 @@
> +/*
> + * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights
> reserved.
> + *
> + * Author: Shlomi Gridish <[email protected]>
> + *
> + * Description:
> + * QE IC private definitions and structure.
> + *
> + * Changelog:
> + * Jun 21, 2006 Li Yang <[email protected]>
> + * - Style fix; port to powerpc arch
> + *
> + * 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 Software Foundation; either version 2 of the License, or
> (at your
> + * option) any later version.
> + */
> +#ifndef __QE_IC_H__
> +#define __QE_IC_H__
> +
> +typedef struct qe_ic_map {
> + volatile u32 qicr;
> + volatile u32 qivec;
> + volatile u32 qripnr;
> + volatile u32 qipnr;
> + volatile u32 qipxcc;
> + volatile u32 qipycc;
> + volatile u32 qipwcc;
> + volatile u32 qipzcc;
> + volatile u32 qimr;
> + volatile u32 qrimr;
> + volatile u32 qicnr;
> + volatile u8 res0[0x4];
> + volatile u32 qiprta;
> + volatile u32 qiprtb;
> + volatile u8 res1[0x4];
> + volatile u32 qricr;
> + volatile u8 res2[0x20];
> + volatile u32 qhivec;
> + volatile u8 res3[0x1C];
> +} __attribute__ ((packed)) qe_ic_map_t;
> +
> +
> +#define QE_IC_SIZE sizeof(struct qe_ic_map)
> +
> +/* Interrupt priority registers */
> +#define QIPCC_SHIFT_PRI0 29
> +#define QIPCC_SHIFT_PRI1 26
> +#define QIPCC_SHIFT_PRI2 23
> +#define QIPCC_SHIFT_PRI3 20
> +#define QIPCC_SHIFT_PRI4 13
> +#define QIPCC_SHIFT_PRI5 10
> +#define QIPCC_SHIFT_PRI6 7
> +#define QIPCC_SHIFT_PRI7 4
> +
> +/* QICR priority modes */
> +#define QICR_GWCC 0x00040000
> +#define QICR_GXCC 0x00020000
> +#define QICR_GYCC 0x00010000
> +#define QICR_GZCC 0x00080000
> +#define QICR_GRTA 0x00200000
> +#define QICR_GRTB 0x00400000
> +#define QICR_HPIT_SHIFT 8
> +
> +/* QICNR */
> +#define QICNR_WCC1T_SHIFT 20
> +#define QICNR_ZCC1T_SHIFT 28
> +#define QICNR_YCC1T_SHIFT 12
> +#define QICNR_XCC1T_SHIFT 4
> +
> +/* QRICR */
> +#define QRICR_RTA1T_SHIFT 20
> +#define QRICR_RTB1T_SHIFT 28
> +
> +struct qe_ic_private {
> + struct qe_ic_map *regs;
> + unsigned int irq_offset;
> +} qe_ic_private_t;
> +
> +extern struct hw_interrupt_type qe_ic;
> +extern int qe_ic_get_irq(struct pt_regs *regs);
> +
> +#endif /* __QE_IC_H__ */
> diff --git a/arch/powerpc/sysdev/qe_lib/qe_io.c b/arch/powerpc/
> sysdev/qe_lib/qe_io.c
> new file mode 100644
> index 0000000..a943c27
> --- /dev/null
> +++ b/arch/powerpc/sysdev/qe_lib/qe_io.c
> @@ -0,0 +1,275 @@
> +/*
> + * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights
> reserved.
> + *
> + * Author: Li Yang <[email protected]>
> + *
> + * Description:
> + * QE Parallel I/O ports configuration routines. Based on code from
> + * Shlomi Gridish <[email protected]>
> + *
> + * Changelog:
> + * Jun 21, 2006 Initial version
> + *
> + * 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 Software Foundation; either version 2 of the License, or
> (at your
> + * option) any later version.
> + */
> +
> +#include <linux/config.h>
> +#include <linux/stddef.h>
> +#include <linux/kernel.h>
> +#include <linux/init.h>
> +#include <linux/errno.h>
> +#include <linux/module.h>
> +
> +#include <asm/io.h>
> +#include <asm/prom.h>
> +#include <sysdev/fsl_soc.h>
> +#undef DEBUG
> +
> +#define NUM_OF_PINS 32
> +#define NUM_OF_PAR_IOS 7
> +
> +typedef struct par_io {
> + struct {
> + u32 cpodr; /* Open drain register */
> + u32 cpdata; /* Data register */
> + u32 cpdir1; /* Direction register */
> + u32 cpdir2; /* Direction register */
> + u32 cppar1; /* Pin assignment register */
> + u32 cppar2; /* Pin assignment register */
> + } io_regs[NUM_OF_PAR_IOS];
> +} par_io_t;
> +
> +typedef struct qe_par_io {
> + u8 res[0xc];
> + u32 cepier; /* QE ports interrupt event register */
> + u32 cepimr; /* QE ports mask event register */
> + u32 cepicr; /* QE ports control event register */
> +} qe_par_io_t;
> +
> +static int qe_irq_ports[NUM_OF_PAR_IOS][NUM_OF_PINS] = {
> + /* 0-7 */ /* 8-15 */ /* 16 - 23 */ /* 24 - 31
*/
> + {0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,1, 1,0,0,0,0,0,0,0,
> 0,0,0,0,0,1,1,0},
> + {0,0,0,1,0,1,0,0, 0,0,0,0,1,1,0,0, 0,0,0,0,0,0,0,0,
> 0,0,1,1,0,0,0,0},
> + {0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
> 0,0,0,1,1,1,0,0},
> + {0,0,0,0,0,0,0,0, 0,0,0,0,1,1,0,0, 1,1,0,0,0,0,0,0,
> 0,0,1,1,0,0,0,0},
> + {0,0,0,0,0,0,0,0, 0,0,0,0,1,1,0,0, 0,0,0,0,0,0,0,0,
> 1,1,1,1,0,0,0,1},
> + {0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,1,0,0,0,
> 0,0,0,0,0,0,0,0},
> + {0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,1}
> +};
> +
> +
> +static u8 get_irq_num(u8 port, u8 pin)
> +{
> + int i, j;
> + u8 num = 0;
> +
> + if (qe_irq_ports[port][pin] == 0)
> + return -1;
> + for (j = 0; j <= port; j++)
> + for (i = 0; i < pin; i++)
> + if (qe_irq_ports[j][i])
> + num++;
> + return num;
> +}
> +
> +static par_io_t *par_io = NULL;
> +static qe_par_io_t *qe_par_io = NULL;
> +
> +int par_io_config_pin(u8 port, u8 pin, int dir, int open_drain,
> + int assignment, int has_irq)
> +{
> + u32 pinMask1bit, pinMask2bits, newMask2bits, tmp_val;
> +
> + if (!par_io) {
> + par_io = (par_io_t *) ioremap(get_immrbase() + 0x1400,
> + sizeof(par_io_t));
> + qe_par_io = (qe_par_io_t *) ioremap(get_immrbase() +
0xC00,
> +
sizeof(qe_par_io_t));
> +
> + /* clear event bits in the event register of the QE
ports */
> + out_be32(&qe_par_io->cepier, 0xFFFFFFFF);
> + }
> +
> + /* calculate pin location for single and 2 bits information */
> + pinMask1bit = (u32) (1 << (NUM_OF_PINS - (pin + 1)));
> +
> + /* Set open drain, if required */
> + tmp_val = in_be32(&par_io->io_regs[port].cpodr);
> + if (open_drain)
> + out_be32(&par_io->io_regs[port].cpodr, pinMask1bit |
tmp_val);
> + else
> + out_be32(&par_io->io_regs[port].cpodr, ~pinMask1bit &
tmp_val);
> +
> + /* define direction */
> + tmp_val = (pin > (NUM_OF_PINS / 2) - 1) ?
> + in_be32(&par_io->io_regs[port].cpdir2) :
> + in_be32(&par_io->io_regs[port].cpdir1);
> +
> + /* get all bits mask for 2 bit per port */
> + pinMask2bits = (u32) (0x3 <<
> + (NUM_OF_PINS -
> + (pin % (NUM_OF_PINS / 2) + 1) * 2));
> +
> + /* Get the final mask we need for the right definition */
> + newMask2bits = (u32) (dir <<
> + (NUM_OF_PINS -
> + (pin % (NUM_OF_PINS / 2) + 1) * 2));
> +
> + /* clear and set 2 bits mask */
> + if (pin > (NUM_OF_PINS / 2) - 1) {
> + out_be32(&par_io->io_regs[port].cpdir2,
> + ~pinMask2bits & tmp_val);
> + tmp_val &= ~pinMask2bits;
> + out_be32(&par_io->io_regs[port].cpdir2, newMask2bits |
tmp_val);
> + } else {
> + out_be32(&par_io->io_regs[port].cpdir1,
> + ~pinMask2bits & tmp_val);
> + tmp_val &= ~pinMask2bits;
> + out_be32(&par_io->io_regs[port].cpdir1, newMask2bits |
tmp_val);
> + }
> + /* define pin assignment */
> + tmp_val = (pin > (NUM_OF_PINS / 2) - 1) ?
> + in_be32(&par_io->io_regs[port].cppar2) :
> + in_be32(&par_io->io_regs[port].cppar1);
> +
> + newMask2bits = (u32) (assignment << (NUM_OF_PINS -
> + (pin % (NUM_OF_PINS / 2) + 1) * 2));
> + /* clear and set 2 bits mask */
> + if (pin > (NUM_OF_PINS / 2) - 1) {
> + out_be32(&par_io->io_regs[port].cppar2,
> + ~pinMask2bits & tmp_val);
> + tmp_val &= ~pinMask2bits;
> + out_be32(&par_io->io_regs[port].cppar2, newMask2bits |
tmp_val);
> + } else {
> + out_be32(&par_io->io_regs[port].cppar1,
> + ~pinMask2bits & tmp_val);
> + tmp_val &= ~pinMask2bits;
> + out_be32(&par_io->io_regs[port].cppar1, newMask2bits |
tmp_val);
> + }
> +
> + /* Set interrupt mask if the pin generates interrupt */
> + if (has_irq) {
> + int irq = get_irq_num(port, pin);
> + u32 mask = 0;
> +
> + if (irq == -1) {
> + printk(KERN_WARNING "Port %d, pin %d is can't be
"
> + "interrupt\n", port, pin);
> + return -EINVAL;
> + }
> + mask = 0x80000000 >> irq;
> +
> + tmp_val = in_be32(&qe_par_io->cepimr);
> + out_be32(&qe_par_io->cepimr, mask | tmp_val);
> + }
> +
> + return 0;
> +}
> +
> +EXPORT_SYMBOL(par_io_config_pin);
> +
> +int par_io_data_set(u8 port, u8 pin, u8 val)
> +{
> + u32 pin_mask, tmp_val;
> +
> + if (port >= NUM_OF_PAR_IOS)
> + return -EINVAL;
> + if (pin >= NUM_OF_PINS)
> + return -EINVAL;
> + /* calculate pin location */
> + pin_mask = (u32) (1 << (NUM_OF_PINS - 1 - pin));
> +
> + tmp_val = in_be32(&par_io->io_regs[port].cpdata);
> +
> + if (val == 0) /* clear */
> + out_be32(&par_io->io_regs[port].cpdata, ~pin_mask &
tmp_val);
> + else /* set */
> + out_be32(&par_io->io_regs[port].cpdata, pin_mask |
tmp_val);
> +
> + return 0;
> +}
> +
> +EXPORT_SYMBOL(par_io_data_set);
> +
> +int par_io_of_config(struct device_node *np)
> +{
> + struct device_node *pio;
> + phandle *ph;
> + int pio_map_len;
> + unsigned int *pio_map;
> +
> + ph = (phandle *) get_property(np, "pio-handle", NULL);
> + if (ph == 0) {
> + printk(KERN_ERR "pio-handle not available \n");
> + return -1;
> + }
> +
> + pio = of_find_node_by_phandle(*ph);
> +
> + pio_map = (unsigned int *)
> + get_property(pio, "pio-map", &pio_map_len);
> + if (pio_map == NULL) {
> + printk(KERN_ERR "pio-map is not set! \n");
> + return -1;
> + }
> + pio_map_len /= sizeof(unsigned int);
> + if ((pio_map_len % 6) != 0) {
> + printk(KERN_ERR "pio-map format wrong! \n");
> + return -1;
> + }
> +
> + while (pio_map_len > 0) {
> + par_io_config_pin((u8) pio_map[0], (u8) pio_map[1],
> + (int) pio_map[2], (int) pio_map[3],
> + (int) pio_map[4], (int) pio_map[5]);
> + pio_map += 6;
> + pio_map_len -= 6;
> + }
> + of_node_put(pio);
> + return 0;
> +}
> +EXPORT_SYMBOL(par_io_of_config);
> +
> +#ifdef DEBUG
> +static void dump_par_io(void)
> +{
> + int i;
> +
> + printk(KERN_INFO "PAR IO registars:\n");
> + printk(KERN_INFO "Base address: 0x%08x\n", (u32) par_io);
> + for (i = 0; i < NUM_OF_PAR_IOS; i++) {
> + printk(KERN_INFO "cpodr[%d] : addr - 0x%08x, val -
0x%08x\n",
> + i, (u32) & par_io->io_regs[i].cpodr,
> + in_be32(&par_io->io_regs[i].cpodr));
> + printk(KERN_INFO "cpdata[%d]: addr - 0x%08x, val -
0x%08x\n",
> + i, (u32) & par_io->io_regs[i].cpdata,
> + in_be32(&par_io->io_regs[i].cpdata));
> + printk(KERN_INFO "cpdir1[%d]: addr - 0x%08x, val -
0x%08x\n",
> + i, (u32) & par_io->io_regs[i].cpdir1,
> + in_be32(&par_io->io_regs[i].cpdir1));
> + printk(KERN_INFO "cpdir2[%d]: addr - 0x%08x, val -
0x%08x\n",
> + i, (u32) & par_io->io_regs[i].cpdir2,
> + in_be32(&par_io->io_regs[i].cpdir2));
> + printk(KERN_INFO "cppar1[%d]: addr - 0x%08x, val -
0x%08x\n",
> + i, (u32) & par_io->io_regs[i].cppar1,
> + in_be32(&par_io->io_regs[i].cppar1));
> + printk(KERN_INFO "cppar2[%d]: addr - 0x%08x, val -
0x%08x\n",
> + i, (u32) & par_io->io_regs[i].cppar2,
> + in_be32(&par_io->io_regs[i].cppar2));
> + }
> +
> + printk(KERN_INFO "QE PAR IO registars:\n");
> + printk(KERN_INFO "Base address: 0x%08x\n", (u32) qe_par_io);
> + printk(KERN_INFO "cepier : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & qe_par_io->cepier, in_be32(&qe_par_io->cepier));
> + printk(KERN_INFO "cepimr : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & qe_par_io->cepimr, in_be32(&qe_par_io->cepimr));
> + printk(KERN_INFO "cepicr : addr - 0x%08x, val - 0x%08x\n",
> + (u32) & qe_par_io->cepicr, in_be32(&qe_par_io->cepicr));
> +}
> +
> +EXPORT_SYMBOL(dump_par_io);
> +#endif
> -
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