From 127102aea2ea9ec4e9ca233e2b1a75c8d3b058c4 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 7 Apr 2008 22:47:21 +0900 Subject: [PATCH] libata: make SFF support optional Now that SFF support is completely separated out from the core layer, it can be made optional. Add CONFIG_ATA_SFF and let SFF drivers depend on it. If CONFIG_ATA_SFF isn't set, all codes in libata-sff.c and data structures for SFF support are disabled. This saves good number of bytes for small systems. Signed-off-by: Tejun Heo --- drivers/ata/Kconfig | 44 ++++++++++++++++++++++++--------------- drivers/ata/Makefile | 4 ++-- drivers/ata/libata-core.c | 2 ++ drivers/ata/libata-scsi.c | 2 ++ drivers/ata/libata.h | 4 ++++ include/linux/libata.h | 9 ++++++++ 6 files changed, 46 insertions(+), 19 deletions(-) diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index ea665c24903..48c8fc55391 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -49,6 +49,32 @@ config SATA_AHCI If unsure, say N. +config SATA_SIL24 + tristate "Silicon Image 3124/3132 SATA support" + depends on PCI + help + This option enables support for Silicon Image 3124/3132 Serial ATA. + + If unsure, say N. + +config SATA_FSL + tristate "Freescale 3.0Gbps SATA support" + depends on FSL_SOC + help + This option enables support for Freescale 3.0Gbps SATA controller. + It can be found on MPC837x and MPC8315. + + If unsure, say N. + +config ATA_SFF + bool "ATA SFF support" + default y + help + This option adds support for ATA controllers with SFF + compliant or similar programming interface. + +if ATA_SFF + config SATA_SVW tristate "ServerWorks Frodo / Apple K2 SATA support" depends on PCI @@ -125,14 +151,6 @@ config SATA_SIL If unsure, say N. -config SATA_SIL24 - tristate "Silicon Image 3124/3132 SATA support" - depends on PCI - help - This option enables support for Silicon Image 3124/3132 Serial ATA. - - If unsure, say N. - config SATA_SIS tristate "SiS 964/965/966/180 SATA support" depends on PCI @@ -183,15 +201,6 @@ config PATA_ACPI firmware in the BIOS. This driver can sometimes handle otherwise unsupported hardware. -config SATA_FSL - tristate "Freescale 3.0Gbps SATA support" - depends on FSL_SOC - help - This option enables support for Freescale 3.0Gbps SATA controller. - It can be found on MPC837x and MPC8315. - - If unsure, say N. - config PATA_ALI tristate "ALi PATA support (Experimental)" depends on PCI && EXPERIMENTAL @@ -679,4 +688,5 @@ config PATA_BF54X If unsure, say N. +endif # ATA_SFF endif # ATA diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile index 0511e6f0bb5..e6e41b2c731 100644 --- a/drivers/ata/Makefile +++ b/drivers/ata/Makefile @@ -78,6 +78,6 @@ obj-$(CONFIG_ATA_GENERIC) += ata_generic.o # Should be last libata driver obj-$(CONFIG_PATA_LEGACY) += pata_legacy.o -libata-objs := libata-core.o libata-scsi.o libata-sff.o libata-eh.o \ - libata-pmp.o +libata-objs := libata-core.o libata-scsi.o libata-eh.o libata-pmp.o +libata-$(CONFIG_ATA_SFF) += libata-sff.o libata-$(CONFIG_ATA_ACPI) += libata-acpi.o diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 3a94c69c7fe..ca60af0cb05 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5195,7 +5195,9 @@ struct ata_port *ata_port_alloc(struct ata_host *host) ap->msg_enable = ATA_MSG_DRV | ATA_MSG_ERR | ATA_MSG_WARN; #endif +#ifdef CONFIG_ATA_SFF INIT_DELAYED_WORK(&ap->port_task, ata_pio_task); +#endif INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug); INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan); INIT_LIST_HEAD(&ap->eh_done_q); diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index f8be92836a6..a70881c408e 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2393,7 +2393,9 @@ static void atapi_request_sense(struct ata_queued_cmd *qc) /* FIXME: is this needed? */ memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); +#ifdef CONFIG_ATA_SFF ap->ops->sff_tf_read(ap, &qc->tf); +#endif /* fill these in, for the case where they are -not- overwritten */ cmd->sense_buffer[0] = 0x70; diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index 87f54a1db3b..6b70a624828 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -42,8 +42,10 @@ static inline int ata_is_builtin_hardreset(ata_reset_fn_t reset) { if (reset == sata_std_hardreset) return 1; +#ifdef CONFIG_ATA_SFF if (reset == sata_sff_hardreset) return 1; +#endif return 0; } @@ -206,9 +208,11 @@ extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, extern void ata_eh_finish(struct ata_port *ap); /* libata-sff.c */ +#ifdef CONFIG_ATA_SFF extern void ata_dev_select(struct ata_port *ap, unsigned int device, unsigned int wait, unsigned int can_sleep); extern u8 ata_irq_on(struct ata_port *ap); extern void ata_pio_task(struct work_struct *work); +#endif /* CONFIG_ATA_SFF */ #endif /* __LIBATA_H__ */ diff --git a/include/linux/libata.h b/include/linux/libata.h index 037db1883ba..db77b90003f 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -445,6 +445,7 @@ enum link_pm { }; extern struct class_device_attribute class_device_attr_link_power_management_policy; +#ifdef CONFIG_ATA_SFF struct ata_ioports { void __iomem *cmd_addr; void __iomem *data_addr; @@ -462,6 +463,7 @@ struct ata_ioports { void __iomem *bmdma_addr; void __iomem *scr_addr; }; +#endif /* CONFIG_ATA_SFF */ struct ata_host { spinlock_t lock; @@ -648,7 +650,9 @@ struct ata_port { struct ata_prd *prd; /* our SG list */ dma_addr_t prd_dma; /* and its DMA mapping */ +#ifdef CONFIG_ATA_SFF struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ +#endif /* CONFIG_ATA_SFF */ u8 ctl; /* cache of ATA control register */ u8 last_ctl; /* Cache last written value */ @@ -760,6 +764,7 @@ struct ata_port_operations { void (*port_stop)(struct ata_port *ap); void (*host_stop)(struct ata_host *host); +#ifdef CONFIG_ATA_SFF /* * SFF / taskfile oriented ops */ @@ -779,6 +784,7 @@ struct ata_port_operations { void (*bmdma_start)(struct ata_queued_cmd *qc); void (*bmdma_stop)(struct ata_queued_cmd *qc); u8 (*bmdma_status)(struct ata_port *ap); +#endif /* CONFIG_ATA_SFF */ /* * Obsolete @@ -1349,6 +1355,8 @@ static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) /************************************************************************** * SFF - drivers/ata/libata-sff.c */ +#ifdef CONFIG_ATA_SFF + extern const struct ata_port_operations ata_sff_port_ops; extern const struct ata_port_operations ata_bmdma_port_ops; @@ -1489,5 +1497,6 @@ static inline u8 ata_wait_idle(struct ata_port *ap) return status; } +#endif /* CONFIG_ATA_SFF */ #endif /* __LINUX_LIBATA_H__ */ -- 2.41.1