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Message-ID: <20080214234624.159d5b48@kernel.crashing.org>
Date: Thu, 14 Feb 2008 23:46:24 +0300
From: Vitaly Bordug <vitb@...nel.crashing.org>
To: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Cc: linux-ide@...r.kernel.org, linuxppc-dev@...abs.org,
linux-kernel@...r.kernel.org,
Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Subject: Re: [PATCH 05/11] ppc/mpc8xx: remove ppc_ide_md hooks
On Thu, 14 Feb 2008 01:36:56 +0100
Bartlomiej Zolnierkiewicz wrote:
> * Initialize IDE ports in mpc8xx_ide_probe().
>
> * Remove m8xx_ide_init() and ppc_ide_md hooks - no need for them
> (IDE mpc8xx host driver takes care of all this setup).
>
> * Remove needless 'if (irq)' and 'if (data_port >= MAX_HWIFS)' checks
> from m8xx_ide_init_hwif_ports().
>
> * Remove 'ctrl_port' and 'irq' arguments from
> m8xx_ide_init_hwif_ports().
>
> * Rename m8xx_ide_init_hwif_ports() to m8xx_ide_init_ports().
>
> * Add __init tag to m8xx_ide_init_ports().
>
> This patch fixes hwif->irq always being overriden to 0 (==
> auto-probe, is this even working on PPC?) because of
> ide_init_default_irq() call in ide.c.
>
> There should be no other functional changes.
>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Acked-by: Vitaly Bordug <vitb@...nel.crashing.org>
> ---
> arch/ppc/syslib/m8xx_setup.c | 6 ---
> drivers/ide/ppc/mpc8xx.c | 86
> +++++++++++-------------------------------- 2 files changed, 22
> insertions(+), 70 deletions(-)
>
> Index: b/arch/ppc/syslib/m8xx_setup.c
> ===================================================================
> --- a/arch/ppc/syslib/m8xx_setup.c
> +++ b/arch/ppc/syslib/m8xx_setup.c
> @@ -87,8 +87,6 @@ void m8xx_calibrate_decr(void);
>
> unsigned char __res[sizeof(bd_t)];
>
> -extern void m8xx_ide_init(void);
> -
> extern unsigned long find_available_memory(void);
> extern void m8xx_cpm_reset(void);
> extern void m8xx_wdt_handler_install(bd_t *bp);
> @@ -474,8 +472,4 @@ platform_init(unsigned long r3, unsigned
>
> ppc_md.find_end_of_memory = m8xx_find_end_of_memory;
> ppc_md.setup_io_mappings = m8xx_map_io;
> -
> -#if defined(CONFIG_BLK_DEV_MPC8xx_IDE)
> - m8xx_ide_init();
> -#endif
> }
> Index: b/drivers/ide/ppc/mpc8xx.c
> ===================================================================
> --- a/drivers/ide/ppc/mpc8xx.c
> +++ b/drivers/ide/ppc/mpc8xx.c
> @@ -99,32 +99,6 @@ static int _slot_ = -1; /*
> will be rea /* Make clock cycles and always round up */
> #define PCMCIA_MK_CLKS( t, T ) (( (t) * ((T)/1000000) + 999U ) /
> 1000U )
> -
> -
> -/*
> - * IDE stuff.
> - */
> -static int
> -m8xx_ide_default_irq(unsigned long base)
> -{
> -#ifdef CONFIG_BLK_DEV_MPC8xx_IDE
> - if (base >= MAX_HWIFS)
> - return 0;
> -
> - printk("[%d] m8xx_ide_default_irq
> %d\n",__LINE__,ioport_dsc[base].irq);
> -
> - return (ioport_dsc[base].irq);
> -#else
> - return 9;
> -#endif
> -}
> -
> -static unsigned long
> -m8xx_ide_default_io_base(int index)
> -{
> - return index;
> -}
> -
> #define M8XX_PCMCIA_CD2(slot) (0x10000000 >> (slot << 4))
> #define M8XX_PCMCIA_CD1(slot) (0x08000000 >> (slot << 4))
>
> @@ -149,12 +123,11 @@ static int pcmcia_schlvl = PCMCIA_SCHLVL
> */
>
> /*
> - * m8xx_ide_init_hwif_ports for a direct IDE interface _using_
> + * m8xx_ide_init_ports() for a direct IDE interface _using_
> + * MPC8xx's internal PCMCIA interface
> */
> #if defined(CONFIG_IDE_8xx_PCCARD) || defined(CONFIG_IDE_8xx_DIRECT)
> -static void
> -m8xx_ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port,
> - unsigned long ctrl_port, int *irq)
> +static void __init m8xx_ide_init_ports(hw_regs_t *hw, unsigned long
> data_port) {
> unsigned long *p = hw->io_ports;
> int i;
> @@ -173,8 +146,6 @@ m8xx_ide_init_hwif_ports(hw_regs_t *hw,
> unsigned long base;
>
> *p = 0;
> - if (irq)
> - *irq = 0;
>
> pcmp = (pcmconf8xx_t *)(&(((immap_t
> *)IMAP_ADDR)->im_pcmcia));
> @@ -248,9 +219,6 @@ m8xx_ide_init_hwif_ports(hw_regs_t *hw,
> }
> }
>
> - if (data_port >= MAX_HWIFS)
> - return;
> -
> if (_slot_ == -1) {
> printk ("PCMCIA slot has not been defined! Using A
> as default\n"); _slot_ = 0;
> @@ -292,11 +260,13 @@ m8xx_ide_init_hwif_ports(hw_regs_t *hw,
> *p++ = base + ioport_dsc[data_port].reg_off[i];
> }
>
> - if (irq) {
> + hw->irq = ioport_dsc[data_port].irq;
> + hw->ack_intr = (ide_ack_intr_t *)ide_interrupt_ack;
> +
> #ifdef CONFIG_IDE_8xx_PCCARD
> + {
> unsigned int reg;
>
> - *irq = ioport_dsc[data_port].irq;
> if (_slot_)
> pgcrx = &((immap_t *)
> IMAP_ADDR)->im_pcmcia.pcmc_pgcrb; else
> @@ -306,14 +276,11 @@ m8xx_ide_init_hwif_ports(hw_regs_t *hw,
> reg |= mk_int_int_mask (pcmcia_schlvl) << 24;
> reg |= mk_int_int_mask (pcmcia_schlvl) << 16;
> *pgcrx = reg;
> -#else /* direct connected IDE drive, i.e. external IRQ, not
> the PCMCIA irq */
> - *irq = ioport_dsc[data_port].irq;
> -#endif /* CONFIG_IDE_8xx_PCCARD */
> }
> +#endif /* CONFIG_IDE_8xx_PCCARD */
>
> ide_hwifs[data_port].pio_mask = ATA_PIO4;
> ide_hwifs[data_port].set_pio_mode = m8xx_ide_set_pio_mode;
> - ide_hwifs[data_port].ack_intr = (ide_ack_intr_t
> *)ide_interrupt_ack;
> /* Enable Harddisk Interrupt,
> * and make it edge sensitive
> @@ -329,16 +296,15 @@ m8xx_ide_init_hwif_ports(hw_regs_t *hw,
> /* Enable falling edge irq */
> pcmp->pcmc_per = 0x100000 >> (16 * _slot_);
> #endif /* CONFIG_IDE_8xx_PCCARD */
> -} /* m8xx_ide_init_hwif_ports() using 8xx internal PCMCIA
> interface */ +}
> #endif /* CONFIG_IDE_8xx_PCCARD || CONFIG_IDE_8xx_DIRECT */
>
> /*
> - * m8xx_ide_init_hwif_ports for a direct IDE interface _not_ using
> + * m8xx_ide_init_ports() for a direct IDE interface _not_ using
> * MPC8xx's internal PCMCIA interface
> */
> #if defined(CONFIG_IDE_EXT_DIRECT)
> -void m8xx_ide_init_hwif_ports (hw_regs_t *hw,
> - unsigned long data_port, unsigned long ctrl_port, int *irq)
> +static void __init m8xx_ide_init_ports(hw_regs_t *hw, unsigned long
> data_port) {
> unsigned long *p = hw->io_ports;
> int i;
> @@ -349,8 +315,6 @@ void m8xx_ide_init_hwif_ports (hw_regs_t
> unsigned long base;
>
> *p = 0;
> - if (irq)
> - *irq = 0;
>
> if (!ide_base) {
>
> @@ -372,9 +336,6 @@ void m8xx_ide_init_hwif_ports (hw_regs_t
> #endif
> }
>
> - if (data_port >= MAX_HWIFS)
> - return;
> -
> base = ide_base + ioport_dsc[data_port].base_off;
> #ifdef DEBUG
> printk ("base: %08x + %08x = %08x\n",
> @@ -392,14 +353,12 @@ void m8xx_ide_init_hwif_ports (hw_regs_t
> *p++ = base + ioport_dsc[data_port].reg_off[i];
> }
>
> - if (irq) {
> - /* direct connected IDE drive, i.e. external IRQ */
> - *irq = ioport_dsc[data_port].irq;
> - }
> + /* direct connected IDE drive, i.e. external IRQ */
> + hw->irq = ioport_dsc[data_port].irq;
> + hw->ack_intr = (ide_ack_intr_t *)ide_interrupt_ack;
>
> ide_hwifs[data_port].pio_mask = ATA_PIO4;
> ide_hwifs[data_port].set_pio_mode = m8xx_ide_set_pio_mode;
> - ide_hwifs[data_port].ack_intr = (ide_ack_intr_t
> *)ide_interrupt_ack;
> /* Enable Harddisk Interrupt,
> * and make it edge sensitive
> @@ -407,8 +366,7 @@ void m8xx_ide_init_hwif_ports (hw_regs_t
> /* (11-18) Set edge detect for irq, no wakeup from low power
> mode */ ((immap_t *) IMAP_ADDR)->im_siu_conf.sc_siel |=
> (0x80000000 >> ioport_dsc[data_port].irq);
> -} /* m8xx_ide_init_hwif_ports() for CONFIG_IDE_8xx_DIRECT */
> -
> +}
> #endif /* CONFIG_IDE_8xx_DIRECT */
>
>
> @@ -829,20 +787,20 @@ static int identify (volatile u8 *p)
> return (0); /* don't know */
> }
>
> -void m8xx_ide_init(void)
> -{
> - ppc_ide_md.default_irq = m8xx_ide_default_irq;
> - ppc_ide_md.default_io_base = m8xx_ide_default_io_base;
> - ppc_ide_md.ide_init_hwif = m8xx_ide_init_hwif_ports;
> -}
> -
> static int __init mpc8xx_ide_probe(void)
> {
> + hw_regs_t hw;
> u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
>
> #ifdef IDE0_BASE_OFFSET
> + memset(&hw, 0, sizeof(hw));
> + m8xx_ide_init_ports(&hw, 0);
> + ide_init_port_hw(&ide_hwifs[0], &hw);
> idx[0] = 0;
> #ifdef IDE1_BASE_OFFSET
> + memset(&hw, 0, sizeof(hw));
> + m8xx_ide_init_ports(&hw, 1);
> + ide_init_port_hw(&ide_hwifs[1], &hw);
> idx[1] = 1;
> #endif
> #endif
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@...abs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
--
Sincerely, Vitaly
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