From e12bef50b7660cf7c19d1cd3eac381b9eff734d7 Mon Sep 17 00:00:00 2001 From: Mark Lord Date: Mon, 31 Mar 2008 19:33:56 -0400 Subject: [PATCH] sata_mv cosmetic fixes Various cosmetic fixes in preparation for real code changes later on. Signed-off-by: Mark Lord Signed-off-by: Jeff Garzik --- drivers/ata/sata_mv.c | 116 +++++++++++++++++++++++++------------------------- 1 file changed, 59 insertions(+), 57 deletions(-) diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index 9a89390..ee6ca97 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -1,6 +1,7 @@ /* * sata_mv.c - Marvell SATA support * + * Copyright 2008: Marvell Corporation, all rights reserved. * Copyright 2005: EMC Corporation, all rights reserved. * Copyright 2005 Red Hat, Inc. All rights reserved. * @@ -61,7 +62,6 @@ */ - #include #include #include @@ -131,7 +131,7 @@ enum { MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */ MV_FLAG_IRQ_COALESCE = (1 << 29), /* IRQ coalescing capability */ /* SoC integrated controllers, no PCI interface */ - MV_FLAG_SOC = (1 << 28), + MV_FLAG_SOC = (1 << 28), MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI | @@ -141,6 +141,7 @@ enum { CRQB_FLAG_READ = (1 << 0), CRQB_TAG_SHIFT = 1, CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */ + CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */ CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */ CRQB_CMD_ADDR_SHIFT = 8, CRQB_CMD_CS = (0x2 << 11), @@ -199,7 +200,7 @@ enum { TWSI_INT = (1 << 24), HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */ HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */ - HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */ + HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */ HC_MAIN_MASKED_IRQS = (TRAN_LO_DONE | TRAN_HI_DONE | PORTS_0_7_COAL_DONE | GPIO_INT | TWSI_INT | HC_MAIN_RSVD), @@ -223,13 +224,18 @@ enum { SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */ SATA_ACTIVE_OFS = 0x350, SATA_FIS_IRQ_CAUSE_OFS = 0x364, + LTMODE_OFS = 0x30c, PHY_MODE3 = 0x310, PHY_MODE4 = 0x314, PHY_MODE2 = 0x330, + SATA_IFCTL_OFS = 0x344, + SATA_IFSTAT_OFS = 0x34c, + VENDOR_UNIQUE_FIS_OFS = 0x35c, + FIS_CFG_OFS = 0x360, MV5_PHY_MODE = 0x74, MV5_LT_MODE = 0x30, MV5_PHY_CTL = 0x0C, - SATA_INTERFACE_CTL = 0x050, + SATA_INTERFACE_CFG = 0x050, MV_M2_PREAMP_MASK = 0x7e0, @@ -240,6 +246,8 @@ enum { EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */ EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */ EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */ + EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */ + EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */ EDMA_ERR_IRQ_CAUSE_OFS = 0x8, EDMA_ERR_IRQ_MASK_OFS = 0xc, @@ -298,6 +306,7 @@ enum { EDMA_ERR_LNK_DATA_RX | EDMA_ERR_LNK_DATA_TX | EDMA_ERR_TRANS_PROTO, + EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR | EDMA_ERR_DEV_DCON | @@ -344,7 +353,6 @@ enum { /* Port private flags (pp_flags) */ MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */ MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */ - MV_PP_FLAG_HAD_A_RESET = (1 << 2), /* 1st hard reset complete? */ }; #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I) @@ -506,11 +514,11 @@ static void mv_soc_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio); static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio); -static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio, +static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, unsigned int port_no); -static void mv_edma_cfg(struct mv_port_priv *pp, struct mv_host_priv *hpriv, - void __iomem *port_mmio, int want_ncq); -static int __mv_stop_dma(struct ata_port *ap); +static int mv_stop_edma(struct ata_port *ap); +static int mv_stop_edma_engine(struct ata_port *ap); +static void mv_edma_cfg(struct ata_port *ap, int want_ncq); /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below * because we have to allow room for worst case splitting of @@ -714,6 +722,14 @@ static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port) (mv_hardport_from_port(port) * MV_PORT_REG_SZ); } +static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port) +{ + void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port); + unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL; + + return hc_mmio + ofs; +} + static inline void __iomem *mv_host_base(struct ata_host *host) { struct mv_host_priv *hpriv = host->private_data; @@ -789,7 +805,7 @@ static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio, if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0); if (want_ncq != using_ncq) - __mv_stop_dma(ap); + mv_stop_edma_engine(ap); } if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) { struct mv_host_priv *hpriv = ap->host->private_data; @@ -810,7 +826,7 @@ static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio, hc_mmio + HC_IRQ_CAUSE_OFS); } - mv_edma_cfg(pp, hpriv, port_mmio, want_ncq); + mv_edma_cfg(ap, want_ncq); /* clear FIS IRQ Cause */ writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS); @@ -824,7 +840,7 @@ static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio, } /** - * __mv_stop_dma - Disable eDMA engine + * mv_stop_edma_engine - Disable eDMA engine * @ap: ATA channel to manipulate * * Verify the local cache of the eDMA state is accurate with a @@ -833,7 +849,7 @@ static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio, * LOCKING: * Inherited from caller. */ -static int __mv_stop_dma(struct ata_port *ap) +static int mv_stop_edma_engine(struct ata_port *ap) { void __iomem *port_mmio = mv_ap_base(ap); struct mv_port_priv *pp = ap->private_data; @@ -866,13 +882,13 @@ static int __mv_stop_dma(struct ata_port *ap) return err; } -static int mv_stop_dma(struct ata_port *ap) +static int mv_stop_edma(struct ata_port *ap) { unsigned long flags; int rc; spin_lock_irqsave(&ap->host->lock, flags); - rc = __mv_stop_dma(ap); + rc = mv_stop_edma_engine(ap); spin_unlock_irqrestore(&ap->host->lock, flags); return rc; @@ -1007,10 +1023,12 @@ static void mv6_dev_config(struct ata_device *adev) adev->max_sectors = ATA_MAX_SECTORS; } -static void mv_edma_cfg(struct mv_port_priv *pp, struct mv_host_priv *hpriv, - void __iomem *port_mmio, int want_ncq) +static void mv_edma_cfg(struct ata_port *ap, int want_ncq) { u32 cfg; + struct mv_port_priv *pp = ap->private_data; + struct mv_host_priv *hpriv = ap->host->private_data; + void __iomem *port_mmio = mv_ap_base(ap); /* set up non-NCQ EDMA configuration */ cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */ @@ -1118,7 +1136,7 @@ static int mv_port_start(struct ata_port *ap) spin_lock_irqsave(&ap->host->lock, flags); - mv_edma_cfg(pp, hpriv, port_mmio, 0); + mv_edma_cfg(ap, 0); mv_set_edma_ptrs(port_mmio, hpriv, pp); spin_unlock_irqrestore(&ap->host->lock, flags); @@ -1145,7 +1163,7 @@ out_port_free_dma_mem: */ static void mv_port_stop(struct ata_port *ap) { - mv_stop_dma(ap); + mv_stop_edma(ap); mv_port_free_dma_mem(ap); } @@ -1315,8 +1333,7 @@ static void mv_qc_prep_iie(struct ata_queued_cmd *qc) (qc->tf.protocol != ATA_PROT_NCQ)) return; - /* Fill in Gen IIE command request block - */ + /* Fill in Gen IIE command request block */ if (!(qc->tf.flags & ATA_TFLAG_WRITE)) flags |= CRQB_FLAG_READ; @@ -1384,7 +1401,7 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc) * port. Turn off EDMA so there won't be problems accessing * shadow block, etc registers. */ - __mv_stop_dma(ap); + mv_stop_edma_engine(ap); return ata_qc_issue_prot(qc); } @@ -1407,10 +1424,10 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc) * @reset_allowed: bool: 0 == don't trigger from reset here * * In most cases, just clear the interrupt and move on. However, - * some cases require an eDMA reset, which is done right before - * the COMRESET in mv_phy_reset(). The SERR case requires a - * clear of pending errors in the SATA SERROR register. Finally, - * if the port disabled DMA, update our cached copy to match. + * some cases require an eDMA reset, which also performs a COMRESET. + * The SERR case requires a clear of pending errors in the SATA + * SERROR register. Finally, if the port disabled DMA, + * update our cached copy to match. * * LOCKING: * Inherited from caller. @@ -1648,9 +1665,9 @@ static void mv_host_intr(struct ata_host *host, u32 relevant, unsigned int hc) pp = ap->private_data; shift = port << 1; /* (port * 2) */ - if (port >= MV_PORTS_PER_HC) { + if (port >= MV_PORTS_PER_HC) shift++; /* skip bit 8 in the HC Main IRQ reg */ - } + have_err_bits = ((PORT0_ERR << shift) & relevant); if (unlikely(have_err_bits)) { @@ -1739,6 +1756,7 @@ static irqreturn_t mv_interrupt(int irq, void *dev_instance) void __iomem *mmio = hpriv->base; u32 irq_stat, irq_mask; + /* Note to self: &host->lock == &ap->host->lock == ap->lock */ spin_lock(&host->lock); irq_stat = readl(hpriv->main_cause_reg_addr); @@ -1772,14 +1790,6 @@ out_unlock: return IRQ_RETVAL(handled); } -static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port) -{ - void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port); - unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL; - - return hc_mmio + ofs; -} - static unsigned int mv5_scr_offset(unsigned int sc_reg_in) { unsigned int ofs; @@ -1907,7 +1917,7 @@ static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio, writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS); - mv_channel_reset(hpriv, mmio, port); + mv_reset_channel(hpriv, mmio, port); ZERO(0x028); /* command */ writel(0x11f, port_mmio + EDMA_CFG_OFS); @@ -2125,14 +2135,15 @@ static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, m4 = readl(port_mmio + PHY_MODE4); if (hp_flags & MV_HP_ERRATA_60X1B2) - tmp = readl(port_mmio + 0x310); + tmp = readl(port_mmio + PHY_MODE3); + /* workaround for errata FEr SATA#10 (part 1) */ m4 = (m4 & ~(1 << 1)) | (1 << 0); writel(m4, port_mmio + PHY_MODE4); if (hp_flags & MV_HP_ERRATA_60X1B2) - writel(tmp, port_mmio + 0x310); + writel(tmp, port_mmio + PHY_MODE3); } /* Revert values of pre-emphasis and signal amps to the saved ones */ @@ -2182,7 +2193,7 @@ static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv, writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS); - mv_channel_reset(hpriv, mmio, port); + mv_reset_channel(hpriv, mmio, port); ZERO(0x028); /* command */ writel(0x101f, port_mmio + EDMA_CFG_OFS); @@ -2239,7 +2250,7 @@ static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio) return; } -static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio, +static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, unsigned int port_no) { void __iomem *port_mmio = mv_port_base(mmio, port_no); @@ -2247,10 +2258,10 @@ static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio, writelfl(ATA_RST, port_mmio + EDMA_CMD_OFS); if (IS_GEN_II(hpriv)) { - u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL); + u32 ifctl = readl(port_mmio + SATA_INTERFACE_CFG); ifctl |= (1 << 7); /* enable gen2i speed */ ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */ - writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL); + writelfl(ifctl, port_mmio + SATA_INTERFACE_CFG); } udelay(25); /* allow reset propagation */ @@ -2372,14 +2383,7 @@ comreset_retry: static int mv_prereset(struct ata_link *link, unsigned long deadline) { - struct ata_port *ap = link->ap; - struct mv_port_priv *pp = ap->private_data; - - mv_stop_dma(ap); - - if (!(pp->pp_flags & MV_PP_FLAG_HAD_A_RESET)) - pp->pp_flags |= MV_PP_FLAG_HAD_A_RESET; - + mv_stop_edma(link->ap); return 0; } @@ -2390,10 +2394,8 @@ static int mv_hardreset(struct ata_link *link, unsigned int *class, struct mv_host_priv *hpriv = ap->host->private_data; void __iomem *mmio = hpriv->base; - mv_stop_dma(ap); - - mv_channel_reset(hpriv, mmio, ap->port_no); - + mv_stop_edma(ap); + mv_reset_channel(hpriv, mmio, ap->port_no); mv_phy_reset(ap, class, deadline); return 0; @@ -2715,10 +2717,10 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx) if (IS_GEN_II(hpriv)) { void __iomem *port_mmio = mv_port_base(mmio, port); - u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL); + u32 ifctl = readl(port_mmio + SATA_INTERFACE_CFG); ifctl |= (1 << 7); /* enable gen2i speed */ ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */ - writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL); + writelfl(ifctl, port_mmio + SATA_INTERFACE_CFG); } hpriv->ops->phy_errata(hpriv, mmio, port); -- 2.7.4