Convert mac_scsi to platform device and eliminate scsi_register(). Platform resources for chip registers now follow the documentation. This should fix issues with the Mac IIci (and possibly other models too).
Signed-off-by: Finn Thain <[email protected]> --- The new hwreg_present() call is not protected by local_irq_save/restore. This assumes Geert's patch, "Disable/restore interrupts in hwreg_present()/hwreg_write()": http://marc.info/?l=linux-kernel&m=141189640826704&w=2 --- arch/m68k/include/asm/macintosh.h | 3 arch/m68k/mac/config.c | 101 +++++++++++++-- drivers/scsi/mac_scsi.c | 248 +++++++++++++++++++------------------- 3 files changed, 221 insertions(+), 131 deletions(-) Index: linux/drivers/scsi/mac_scsi.c =================================================================== --- linux.orig/drivers/scsi/mac_scsi.c 2014-10-02 16:56:18.000000000 +1000 +++ linux/drivers/scsi/mac_scsi.c 2014-10-02 16:56:19.000000000 +1000 @@ -12,23 +12,18 @@ */ #include <linux/types.h> -#include <linux/stddef.h> -#include <linux/ctype.h> #include <linux/delay.h> - #include <linux/module.h> -#include <linux/signal.h> #include <linux/ioport.h> #include <linux/init.h> #include <linux/blkdev.h> #include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <asm/hwtest.h> #include <asm/io.h> -#include <asm/irq.h> - -#include <asm/macintosh.h> #include <asm/macints.h> -#include <asm/mac_via.h> +#include <asm/setup.h> #include <scsi/scsi_host.h> @@ -36,7 +31,7 @@ #define PSEUDO_DMA -#define NCR5380_implementation_fields /* none */ +#define NCR5380_implementation_fields unsigned char *pdma_base #define NCR5380_local_declare() struct Scsi_Host *_instance #define NCR5380_setup(instance) _instance = instance @@ -58,10 +53,6 @@ #define RESET_BOOT -#ifdef RESET_BOOT -static void mac_scsi_reset_boot(struct Scsi_Host *instance); -#endif - static int setup_can_queue = -1; module_param(setup_can_queue, int, 0); static int setup_cmd_per_lun = -1; @@ -86,23 +77,18 @@ module_param(setup_hostid, int, 0); #define AFTER_RESET_DELAY (HZ/2) #endif -static unsigned char *mac_scsi_regp; -static unsigned char *mac_scsi_drq; -static unsigned char *mac_scsi_nodrq; - - /* * NCR 5380 register access functions */ -static __inline__ char macscsi_read(struct Scsi_Host *instance, int reg) +static inline char macscsi_read(struct Scsi_Host *instance, int reg) { - return in_8(instance->io_port + (reg<<4)); + return in_8(instance->base + (reg << 4)); } -static __inline__ void macscsi_write(struct Scsi_Host *instance, int reg, int value) +static inline void macscsi_write(struct Scsi_Host *instance, int reg, int value) { - out_8(instance->io_port + (reg<<4), value); + out_8(instance->base + (reg << 4), value); } #ifndef MODULE @@ -134,96 +120,6 @@ static int __init mac_scsi_setup(char *s __setup("mac5380=", mac_scsi_setup); #endif /* !MODULE */ -/* - * Function : int macscsi_detect(struct scsi_host_template * tpnt) - * - * Purpose : initializes mac NCR5380 driver based on the - * command line / compile time port and irq definitions. - * - * Inputs : tpnt - template for this SCSI adapter. - * - * Returns : 1 if a host adapter was found, 0 if not. - * - */ - -int __init macscsi_detect(struct scsi_host_template * tpnt) -{ - static int called = 0; - int flags = 0; - struct Scsi_Host *instance; - - if (!MACH_IS_MAC || called) - return( 0 ); - - if (macintosh_config->scsi_type != MAC_SCSI_OLD) - return( 0 ); - - if (setup_can_queue > 0) - tpnt->can_queue = setup_can_queue; - if (setup_cmd_per_lun > 0) - tpnt->cmd_per_lun = setup_cmd_per_lun; - if (setup_sg_tablesize >= 0) - tpnt->sg_tablesize = setup_sg_tablesize; - if (setup_hostid >= 0) - tpnt->this_id = setup_hostid & 7; - -#ifdef SUPPORT_TAGS - if (setup_use_tagged_queuing < 0) - setup_use_tagged_queuing = 0; -#endif - - /* Once we support multiple 5380s (e.g. DuoDock) we'll do - something different here */ - instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata)); - if (instance == NULL) - return 0; - - if (macintosh_config->ident == MAC_MODEL_IIFX) { - mac_scsi_regp = (unsigned char *) VIA1_BASE + 0x8000; - mac_scsi_drq = (unsigned char *) VIA1_BASE + 0xE000; - mac_scsi_nodrq = (unsigned char *) VIA1_BASE + 0xC000; - /* The IIFX should be able to do true DMA, but pseudo-dma doesn't work */ - flags = FLAG_NO_PSEUDO_DMA; - } else { - mac_scsi_regp = (unsigned char *) VIA1_BASE + 0x10000; - mac_scsi_drq = (unsigned char *) VIA1_BASE + 0x6000; - mac_scsi_nodrq = (unsigned char *) VIA1_BASE + 0x12000; - } - - if (! setup_use_pdma) - flags = FLAG_NO_PSEUDO_DMA; - - instance->io_port = (unsigned long) mac_scsi_regp; - instance->irq = IRQ_MAC_SCSI; - -#ifdef RESET_BOOT - mac_scsi_reset_boot(instance); -#endif - - NCR5380_init(instance, flags); - - instance->n_io_port = 255; - - if (instance->irq != IRQ_NONE) - if (request_irq(instance->irq, NCR5380_intr, 0, "ncr5380", instance)) { - printk(KERN_WARNING "scsi%d: IRQ%d not free, interrupts disabled\n", - instance->host_no, instance->irq); - instance->irq = IRQ_NONE; - } - - called = 1; - return 1; -} - -int macscsi_release (struct Scsi_Host *shpnt) -{ - if (shpnt->irq != IRQ_NONE) - free_irq(shpnt->irq, shpnt); - NCR5380_exit(shpnt); - - return 0; -} - #ifdef RESET_BOOT /* * Our 'bus reset on boot' function @@ -335,13 +231,14 @@ __asm__ __volatile__ \ static int macscsi_pread(struct Scsi_Host *instance, unsigned char *dst, int len) { + struct NCR5380_hostdata *hostdata = shost_priv(instance); unsigned char *d; unsigned char *s; NCR5380_local_declare(); NCR5380_setup(instance); - s = mac_scsi_drq + (INPUT_DATA_REG << 4); + s = hostdata->pdma_base + (INPUT_DATA_REG << 4); d = dst; /* These conditions are derived from MacOS */ @@ -428,6 +325,7 @@ __asm__ __volatile__ \ static int macscsi_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) { + struct NCR5380_hostdata *hostdata = shost_priv(instance); unsigned char *s; unsigned char *d; @@ -435,7 +333,7 @@ static int macscsi_pwrite(struct Scsi_Ho NCR5380_setup(instance); s = src; - d = mac_scsi_drq + (OUTPUT_DATA_REG << 4); + d = hostdata->pdma_base + (OUTPUT_DATA_REG << 4); /* These conditions are derived from MacOS */ @@ -462,13 +360,15 @@ static int macscsi_pwrite(struct Scsi_Ho #include "NCR5380.c" -static struct scsi_host_template driver_template = { - .proc_name = "Mac5380", +#define DRV_MODULE_NAME "mac_scsi" +#define PFX DRV_MODULE_NAME ": " + +static struct scsi_host_template mac_scsi_template = { + .module = THIS_MODULE, + .proc_name = DRV_MODULE_NAME, .show_info = macscsi_show_info, .write_info = macscsi_write_info, .name = "Macintosh NCR5380 SCSI", - .detect = macscsi_detect, - .release = macscsi_release, .info = macscsi_info, .queuecommand = macscsi_queue_command, .eh_abort_handler = macscsi_abort, @@ -480,7 +380,117 @@ static struct scsi_host_template driver_ .use_clustering = DISABLE_CLUSTERING }; +static int __init mac_scsi_probe(struct platform_device *pdev) +{ + struct Scsi_Host *instance; + int error; + int host_flags = 0; + struct resource *irq, *pio_mem, *pdma_mem = NULL; + + if (!MACH_IS_MAC) + return -ENODEV; + + pio_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!pio_mem) + return -ENODEV; + +#ifdef PSEUDO_DMA + pdma_mem = platform_get_resource(pdev, IORESOURCE_MEM, 1); +#endif + + irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + + if (!hwreg_present((unsigned char *)pio_mem->start + + (STATUS_REG << 4))) { + pr_info(PFX "no device detected at %pap\n", &pio_mem->start); + return -ENODEV; + } + + if (setup_can_queue > 0) + mac_scsi_template.can_queue = setup_can_queue; + if (setup_cmd_per_lun > 0) + mac_scsi_template.cmd_per_lun = setup_cmd_per_lun; + if (setup_sg_tablesize >= 0) + mac_scsi_template.sg_tablesize = setup_sg_tablesize; + if (setup_hostid >= 0) + mac_scsi_template.this_id = setup_hostid & 7; +#ifdef SUPPORT_TAGS + if (setup_use_tagged_queuing < 0) + setup_use_tagged_queuing = 0; +#endif + if (setup_use_pdma < 0) + setup_use_pdma = 0; + + instance = scsi_host_alloc(&mac_scsi_template, + sizeof(struct NCR5380_hostdata)); + if (!instance) + return -ENOMEM; + + instance->base = pio_mem->start; + if (irq) + instance->irq = irq->start; + else + instance->irq = IRQ_NONE; + + if (pdma_mem && setup_use_pdma) { + struct NCR5380_hostdata *hostdata = shost_priv(instance); + + hostdata->pdma_base = (unsigned char *)pdma_mem->start; + } else + host_flags |= FLAG_NO_PSEUDO_DMA; + +#ifdef RESET_BOOT + mac_scsi_reset_boot(instance); +#endif + + NCR5380_init(instance, host_flags); + + if (instance->irq != IRQ_NONE) { + error = request_irq(instance->irq, macscsi_intr, 0, + "NCR5380", instance); + if (error) + goto fail_irq; + } + + error = scsi_add_host(instance, NULL); + if (error) + goto fail_host; + + platform_set_drvdata(pdev, instance); + + scsi_scan_host(instance); + return 0; + +fail_host: + if (instance->irq != IRQ_NONE) + free_irq(instance->irq, instance); +fail_irq: + NCR5380_exit(instance); + scsi_host_put(instance); + return error; +} + +static int __exit mac_scsi_remove(struct platform_device *pdev) +{ + struct Scsi_Host *instance = platform_get_drvdata(pdev); + + scsi_remove_host(instance); + if (instance->irq != IRQ_NONE) + free_irq(instance->irq, instance); + NCR5380_exit(instance); + scsi_host_put(instance); + return 0; +} + +static struct platform_driver mac_scsi_driver = { + .remove = __exit_p(mac_scsi_remove), + .driver = { + .name = DRV_MODULE_NAME, + .owner = THIS_MODULE, + }, +}; -#include "scsi_module.c" +module_platform_driver_probe(mac_scsi_driver, mac_scsi_probe); +MODULE_ALIAS("platform:" DRV_MODULE_NAME); MODULE_LICENSE("GPL"); Index: linux/arch/m68k/mac/config.c =================================================================== --- linux.orig/arch/m68k/mac/config.c 2014-10-02 16:55:28.000000000 +1000 +++ linux/arch/m68k/mac/config.c 2014-10-02 16:56:19.000000000 +1000 @@ -278,7 +278,7 @@ static struct mac_model mac_data_table[] .name = "IIfx", .adb_type = MAC_ADB_IOP, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_IIFX, .scc_type = MAC_SCC_IOP, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_IOP, @@ -329,7 +329,7 @@ static struct mac_model mac_data_table[] .name = "Color Classic", .adb_type = MAC_ADB_CUDA, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_CCL, .scc_type = MAC_SCC_II, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -338,7 +338,7 @@ static struct mac_model mac_data_table[] .name = "Color Classic II", .adb_type = MAC_ADB_CUDA, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_CCL, .scc_type = MAC_SCC_II, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -526,7 +526,7 @@ static struct mac_model mac_data_table[] .name = "Performa 520", .adb_type = MAC_ADB_CUDA, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_CCL, .scc_type = MAC_SCC_II, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -535,7 +535,7 @@ static struct mac_model mac_data_table[] .name = "Performa 550", .adb_type = MAC_ADB_CUDA, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_CCL, .scc_type = MAC_SCC_II, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -567,7 +567,7 @@ static struct mac_model mac_data_table[] .name = "TV", .adb_type = MAC_ADB_CUDA, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_CCL, .scc_type = MAC_SCC_II, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -740,7 +740,7 @@ static struct mac_model mac_data_table[] .name = "PowerBook Duo 210", .adb_type = MAC_ADB_PB2, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_DUO, .scc_type = MAC_SCC_QUADRA, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -749,7 +749,7 @@ static struct mac_model mac_data_table[] .name = "PowerBook Duo 230", .adb_type = MAC_ADB_PB2, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_DUO, .scc_type = MAC_SCC_QUADRA, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -758,7 +758,7 @@ static struct mac_model mac_data_table[] .name = "PowerBook Duo 250", .adb_type = MAC_ADB_PB2, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_DUO, .scc_type = MAC_SCC_QUADRA, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -767,7 +767,7 @@ static struct mac_model mac_data_table[] .name = "PowerBook Duo 270c", .adb_type = MAC_ADB_PB2, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_DUO, .scc_type = MAC_SCC_QUADRA, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -776,7 +776,7 @@ static struct mac_model mac_data_table[] .name = "PowerBook Duo 280", .adb_type = MAC_ADB_PB2, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_DUO, .scc_type = MAC_SCC_QUADRA, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -785,7 +785,7 @@ static struct mac_model mac_data_table[] .name = "PowerBook Duo 280c", .adb_type = MAC_ADB_PB2, .via_type = MAC_VIA_IICI, - .scsi_type = MAC_SCSI_OLD, + .scsi_type = MAC_SCSI_DUO, .scc_type = MAC_SCC_QUADRA, .nubus_type = MAC_NUBUS, .floppy_type = MAC_FLOPPY_SWIM_ADDR2, @@ -929,6 +929,36 @@ static struct platform_device swim_pdev .resource = &swim_rsrc, }; +static struct resource mac_scsi_0_rsrc[] = { + { + .flags = IORESOURCE_IRQ, + .start = IRQ_MAC_SCSI, + .end = IRQ_MAC_SCSI, + }, + { .flags = IORESOURCE_MEM }, + { .flags = IORESOURCE_MEM }, +}; + +static struct resource mac_scsi_1_rsrc[] = { + /* IRQ_NUBUS_E maybe? */ + { .flags = IORESOURCE_MEM }, + { .flags = IORESOURCE_MEM }, +}; + +static struct platform_device mac_scsi_0_pdev = { + .name = "mac_scsi", + .id = 0, + .resource = mac_scsi_0_rsrc, + .num_resources = ARRAY_SIZE(mac_scsi_0_rsrc), +}; + +static struct platform_device mac_scsi_1_pdev = { + .name = "mac_scsi", + .id = 1, + .resource = mac_scsi_1_rsrc, + .num_resources = ARRAY_SIZE(mac_scsi_1_rsrc), +}; + static struct platform_device esp_0_pdev = { .name = "mac_esp", .id = 0, @@ -1000,6 +1030,53 @@ int __init mac_platform_init(void) (macintosh_config->ident == MAC_MODEL_Q950)) platform_device_register(&esp_1_pdev); break; + case MAC_SCSI_IIFX: + /* Addresses from The Guide to Mac Family Hardware. */ + mac_scsi_0_rsrc[1].start = 0x50008000; /* SCSI DMA */ + mac_scsi_0_rsrc[1].end = mac_scsi_0_rsrc[1].start + 0x1FFF; + /* $5000 E000 - $5000 FFFF: Alternate SCSI (Hsk) */ + /* $5000 C000 - $5000 DFFF: Alternate SCSI (DMA) */ + /* The SCSI DMA custom IC embeds the 53C80 core. mac_scsi does + * not make use of its DMA or hardware handshaking logic. + */ + mac_scsi_0_pdev.num_resources--; + platform_device_register(&mac_scsi_0_pdev); + break; + case MAC_SCSI_DUO: + /* Addresses from the Duo Dock II Developer Note. */ + mac_scsi_1_rsrc[0].start = 0xFEE02000; /* normal mode */ + mac_scsi_1_rsrc[0].end = mac_scsi_1_rsrc[0].start + 0x1FFF; + mac_scsi_1_rsrc[1].start = 0xFEE06000;/* pseudo DMA with /DRQ */ + mac_scsi_1_rsrc[1].end = mac_scsi_1_rsrc[1].start + 0x1FFF; + /* $FEE0 4000 - $FEE0 5FFF: pseudo DMA without /DRQ */ + platform_device_register(&mac_scsi_1_pdev); + /* fall through */ + case MAC_SCSI_OLD: + /* Addresses from Developer Notes for Duo System, + * PowerBook 180 & 160, 140 & 170, Macintosh IIsi + * and also from The Guide to Mac Family Hardware for + * SE/30, II, IIx, IIcx, IIci. + * GMFH says that $5000 0000 - $50FF FFFF "wraps + * $5000 0000 - $5001 FFFF eight times"... + * mess.org says IIci and Color Classic do not alias + * I/O address space. + */ + mac_scsi_0_rsrc[1].start = 0x50010000; /* normal mode */ + mac_scsi_0_rsrc[1].end = mac_scsi_0_rsrc[1].start + 0x1FFF; + mac_scsi_0_rsrc[2].start = 0x50006000;/* pseudo DMA with /DRQ */ + mac_scsi_0_rsrc[2].end = mac_scsi_0_rsrc[2].start + 0x1FFF; + /* $5001 2000 - $5001 3FFF: pseudo DMA without /DRQ */ + platform_device_register(&mac_scsi_0_pdev); + break; + case MAC_SCSI_CCL: + /* Addresses from the Color Classic Developer Note. */ + mac_scsi_0_rsrc[1].start = 0x50F10000; /* SCSI */ + mac_scsi_0_rsrc[1].end = mac_scsi_0_rsrc[1].start + 0x1FFF; + mac_scsi_0_rsrc[2].start = 0x50F06000; /* SCSI handshake */ + mac_scsi_0_rsrc[2].end = mac_scsi_0_rsrc[2].start + 0x1FFF; + /* $50F1 2000 - $50F1 3FFF: SCSI DMA */ + platform_device_register(&mac_scsi_0_pdev); + break; } /* Index: linux/arch/m68k/include/asm/macintosh.h =================================================================== --- linux.orig/arch/m68k/include/asm/macintosh.h 2014-10-02 16:55:28.000000000 +1000 +++ linux/arch/m68k/include/asm/macintosh.h 2014-10-02 16:56:19.000000000 +1000 @@ -53,6 +53,9 @@ struct mac_model #define MAC_SCSI_QUADRA 2 #define MAC_SCSI_QUADRA2 3 #define MAC_SCSI_QUADRA3 4 +#define MAC_SCSI_IIFX 5 +#define MAC_SCSI_DUO 6 +#define MAC_SCSI_CCL 7 #define MAC_IDE_NONE 0 #define MAC_IDE_QUADRA 1 -- To unsubscribe from this list: send the line "unsubscribe linux-m68k" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
