diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/misc/cxl/fault.c | 74 | ||||
| -rw-r--r-- | drivers/misc/cxl/native.c | 4 | ||||
| -rw-r--r-- | drivers/misc/eeprom/eeprom_93cx6.c | 62 | ||||
| -rw-r--r-- | drivers/misc/enclosure.c | 44 | ||||
| -rw-r--r-- | drivers/misc/vexpress-syscfg.c | 60 |
6 files changed, 156 insertions, 90 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index bbeb4516facf..006242c8bca0 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -75,7 +75,7 @@ config ATMEL_TCB_CLKSRC config ATMEL_TCB_CLKSRC_BLOCK int depends on ATMEL_TCB_CLKSRC - prompt "TC Block" if ARCH_AT91RM9200 || ARCH_AT91SAM9260 || CPU_AT32AP700X + prompt "TC Block" if CPU_AT32AP700X default 0 range 0 1 help diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c index 69506ebd4d07..c99e896604ee 100644 --- a/drivers/misc/cxl/fault.c +++ b/drivers/misc/cxl/fault.c @@ -21,60 +21,64 @@ #include "cxl.h" -static struct cxl_sste* find_free_sste(struct cxl_sste *primary_group, - bool sec_hash, - struct cxl_sste *secondary_group, - unsigned int *lru) +static bool sste_matches(struct cxl_sste *sste, struct copro_slb *slb) { - unsigned int i, entry; - struct cxl_sste *sste, *group = primary_group; - - for (i = 0; i < 2; i++) { - for (entry = 0; entry < 8; entry++) { - sste = group + entry; - if (!(be64_to_cpu(sste->esid_data) & SLB_ESID_V)) - return sste; - } - if (!sec_hash) - break; - group = secondary_group; + return ((sste->vsid_data == cpu_to_be64(slb->vsid)) && + (sste->esid_data == cpu_to_be64(slb->esid))); +} + +/* + * This finds a free SSTE for the given SLB, or returns NULL if it's already in + * the segment table. + */ +static struct cxl_sste* find_free_sste(struct cxl_context *ctx, + struct copro_slb *slb) +{ + struct cxl_sste *primary, *sste, *ret = NULL; + unsigned int mask = (ctx->sst_size >> 7) - 1; /* SSTP0[SegTableSize] */ + unsigned int entry; + unsigned int hash; + + if (slb->vsid & SLB_VSID_B_1T) + hash = (slb->esid >> SID_SHIFT_1T) & mask; + else /* 256M */ + hash = (slb->esid >> SID_SHIFT) & mask; + + primary = ctx->sstp + (hash << 3); + + for (entry = 0, sste = primary; entry < 8; entry++, sste++) { + if (!ret && !(be64_to_cpu(sste->esid_data) & SLB_ESID_V)) + ret = sste; + if (sste_matches(sste, slb)) + return NULL; } + if (ret) + return ret; + /* Nothing free, select an entry to cast out */ - if (sec_hash && (*lru & 0x8)) - sste = secondary_group + (*lru & 0x7); - else - sste = primary_group + (*lru & 0x7); - *lru = (*lru + 1) & 0xf; + ret = primary + ctx->sst_lru; + ctx->sst_lru = (ctx->sst_lru + 1) & 0x7; - return sste; + return ret; } static void cxl_load_segment(struct cxl_context *ctx, struct copro_slb *slb) { /* mask is the group index, we search primary and secondary here. */ - unsigned int mask = (ctx->sst_size >> 7)-1; /* SSTP0[SegTableSize] */ - bool sec_hash = 1; struct cxl_sste *sste; - unsigned int hash; unsigned long flags; - - sec_hash = !!(cxl_p1n_read(ctx->afu, CXL_PSL_SR_An) & CXL_PSL_SR_An_SC); - - if (slb->vsid & SLB_VSID_B_1T) - hash = (slb->esid >> SID_SHIFT_1T) & mask; - else /* 256M */ - hash = (slb->esid >> SID_SHIFT) & mask; - spin_lock_irqsave(&ctx->sste_lock, flags); - sste = find_free_sste(ctx->sstp + (hash << 3), sec_hash, - ctx->sstp + ((~hash & mask) << 3), &ctx->sst_lru); + sste = find_free_sste(ctx, slb); + if (!sste) + goto out_unlock; pr_devel("CXL Populating SST[%li]: %#llx %#llx\n", sste - ctx->sstp, slb->vsid, slb->esid); sste->vsid_data = cpu_to_be64(slb->vsid); sste->esid_data = cpu_to_be64(slb->esid); +out_unlock: spin_unlock_irqrestore(&ctx->sste_lock, flags); } diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c index 623286a77114..d47532e8f4f1 100644 --- a/drivers/misc/cxl/native.c +++ b/drivers/misc/cxl/native.c @@ -417,7 +417,7 @@ static int attach_afu_directed(struct cxl_context *ctx, u64 wed, u64 amr) ctx->elem->haurp = 0; /* disable */ ctx->elem->sdr = cpu_to_be64(mfspr(SPRN_SDR1)); - sr = CXL_PSL_SR_An_SC; + sr = 0; if (ctx->master) sr |= CXL_PSL_SR_An_MP; if (mfspr(SPRN_LPCR) & LPCR_TC) @@ -508,7 +508,7 @@ static int attach_dedicated(struct cxl_context *ctx, u64 wed, u64 amr) u64 sr; int rc; - sr = CXL_PSL_SR_An_SC; + sr = 0; set_endian(sr); if (ctx->master) sr |= CXL_PSL_SR_An_MP; diff --git a/drivers/misc/eeprom/eeprom_93cx6.c b/drivers/misc/eeprom/eeprom_93cx6.c index 0ff4b02177be..0cf2c9d676be 100644 --- a/drivers/misc/eeprom/eeprom_93cx6.c +++ b/drivers/misc/eeprom/eeprom_93cx6.c @@ -170,7 +170,7 @@ static void eeprom_93cx6_read_bits(struct eeprom_93cx6 *eeprom, } /** - * eeprom_93cx6_read - Read multiple words from eeprom + * eeprom_93cx6_read - Read a word from eeprom * @eeprom: Pointer to eeprom structure * @word: Word index from where we should start reading * @data: target pointer where the information will have to be stored @@ -235,6 +235,66 @@ void eeprom_93cx6_multiread(struct eeprom_93cx6 *eeprom, const u8 word, EXPORT_SYMBOL_GPL(eeprom_93cx6_multiread); /** + * eeprom_93cx6_readb - Read a byte from eeprom + * @eeprom: Pointer to eeprom structure + * @word: Byte index from where we should start reading + * @data: target pointer where the information will have to be stored + * + * This function will read a byte of the eeprom data + * into the given data pointer. + */ +void eeprom_93cx6_readb(struct eeprom_93cx6 *eeprom, const u8 byte, + u8 *data) +{ + u16 command; + u16 tmp; + + /* + * Initialize the eeprom register + */ + eeprom_93cx6_startup(eeprom); + + /* + * Select the read opcode and the byte to be read. + */ + command = (PCI_EEPROM_READ_OPCODE << (eeprom->width + 1)) | byte; + eeprom_93cx6_write_bits(eeprom, command, + PCI_EEPROM_WIDTH_OPCODE + eeprom->width + 1); + + /* + * Read the requested 8 bits. + */ + eeprom_93cx6_read_bits(eeprom, &tmp, 8); + *data = tmp & 0xff; + + /* + * Cleanup eeprom register. + */ + eeprom_93cx6_cleanup(eeprom); +} +EXPORT_SYMBOL_GPL(eeprom_93cx6_readb); + +/** + * eeprom_93cx6_multireadb - Read multiple bytes from eeprom + * @eeprom: Pointer to eeprom structure + * @byte: Index from where we should start reading + * @data: target pointer where the information will have to be stored + * @words: Number of bytes that should be read. + * + * This function will read all requested bytes from the eeprom, + * this is done by calling eeprom_93cx6_readb() multiple times. + */ +void eeprom_93cx6_multireadb(struct eeprom_93cx6 *eeprom, const u8 byte, + u8 *data, const u16 bytes) +{ + unsigned int i; + + for (i = 0; i < bytes; i++) + eeprom_93cx6_readb(eeprom, byte + i, &data[i]); +} +EXPORT_SYMBOL_GPL(eeprom_93cx6_multireadb); + +/** * eeprom_93cx6_wren - set the write enable state * @eeprom: Pointer to eeprom structure * @enable: true to enable writes, otherwise disable writes diff --git a/drivers/misc/enclosure.c b/drivers/misc/enclosure.c index 2cf2bbc0b927..180a5442fd4b 100644 --- a/drivers/misc/enclosure.c +++ b/drivers/misc/enclosure.c @@ -187,6 +187,7 @@ void enclosure_unregister(struct enclosure_device *edev) EXPORT_SYMBOL_GPL(enclosure_unregister); #define ENCLOSURE_NAME_SIZE 64 +#define COMPONENT_NAME_SIZE 64 static void enclosure_link_name(struct enclosure_component *cdev, char *name) { @@ -246,6 +247,29 @@ static void enclosure_component_release(struct device *dev) put_device(dev->parent); } +static struct enclosure_component * +enclosure_component_find_by_name(struct enclosure_device *edev, + const char *name) +{ + int i; + const char *cname; + struct enclosure_component *ecomp; + + if (!edev || !name || !name[0]) + return NULL; + + for (i = 0; i < edev->components; i++) { + ecomp = &edev->component[i]; + cname = dev_name(&ecomp->cdev); + if (ecomp->number != -1 && + cname && cname[0] && + !strcmp(cname, name)) + return ecomp; + } + + return NULL; +} + static const struct attribute_group *enclosure_component_groups[]; /** @@ -269,7 +293,8 @@ enclosure_component_register(struct enclosure_device *edev, { struct enclosure_component *ecomp; struct device *cdev; - int err; + int err, i; + char newname[COMPONENT_NAME_SIZE]; if (number >= edev->components) return ERR_PTR(-EINVAL); @@ -283,9 +308,20 @@ enclosure_component_register(struct enclosure_device *edev, ecomp->number = number; cdev = &ecomp->cdev; cdev->parent = get_device(&edev->edev); - if (name && name[0]) - dev_set_name(cdev, "%s", name); - else + + if (name && name[0]) { + /* Some hardware (e.g. enclosure in RX300 S6) has components + * with non unique names. Registering duplicates in sysfs + * will lead to warnings during bootup. So make the names + * unique by appending consecutive numbers -1, -2, ... */ + i = 1; + snprintf(newname, COMPONENT_NAME_SIZE, + "%s", name); + while (enclosure_component_find_by_name(edev, newname)) + snprintf(newname, COMPONENT_NAME_SIZE, + "%s-%i", name, i++); + dev_set_name(cdev, "%s", newname); + } else dev_set_name(cdev, "%u", number); cdev->release = enclosure_component_release; diff --git a/drivers/misc/vexpress-syscfg.c b/drivers/misc/vexpress-syscfg.c index b3a812384a6f..c344483fa7d6 100644 --- a/drivers/misc/vexpress-syscfg.c +++ b/drivers/misc/vexpress-syscfg.c @@ -145,7 +145,7 @@ static struct regmap_config vexpress_syscfg_regmap_config = { static struct regmap *vexpress_syscfg_regmap_init(struct device *dev, void *context) { - struct platform_device *pdev = to_platform_device(dev); + int err; struct vexpress_syscfg *syscfg = context; struct vexpress_syscfg_func *func; struct property *prop; @@ -155,32 +155,18 @@ static struct regmap *vexpress_syscfg_regmap_init(struct device *dev, u32 site, position, dcc; int i; - if (dev->of_node) { - int err = vexpress_config_get_topo(dev->of_node, &site, + err = vexpress_config_get_topo(dev->of_node, &site, &position, &dcc); + if (err) + return ERR_PTR(err); - if (err) - return ERR_PTR(err); - - prop = of_find_property(dev->of_node, - "arm,vexpress-sysreg,func", NULL); - if (!prop) - return ERR_PTR(-EINVAL); - - num = prop->length / sizeof(u32) / 2; - val = prop->value; - } else { - if (pdev->num_resources != 1 || - pdev->resource[0].flags != IORESOURCE_BUS) - return ERR_PTR(-EFAULT); - - site = pdev->resource[0].start; - if (site == VEXPRESS_SITE_MASTER) - site = vexpress_config_get_master(); - position = 0; - dcc = 0; - num = 1; - } + prop = of_find_property(dev->of_node, + "arm,vexpress-sysreg,func", NULL); + if (!prop) + return ERR_PTR(-EINVAL); + + num = prop->length / sizeof(u32) / 2; + val = prop->value; /* * "arm,vexpress-energy" function used to be described @@ -207,13 +193,8 @@ static struct regmap *vexpress_syscfg_regmap_init(struct device *dev, for (i = 0; i < num; i++) { u32 function, device; - if (dev->of_node) { - function = be32_to_cpup(val++); - device = be32_to_cpup(val++); - } else { - function = pdev->resource[0].end; - device = pdev->id; - } + function = be32_to_cpup(val++); + device = be32_to_cpup(val++); dev_dbg(dev, "func %p: %u/%u/%u/%u/%u\n", func, site, position, dcc, @@ -265,17 +246,6 @@ static struct vexpress_config_bridge_ops vexpress_syscfg_bridge_ops = { }; -/* Non-DT hack, to be gone... */ -static struct device *vexpress_syscfg_bridge; - -int vexpress_syscfg_device_register(struct platform_device *pdev) -{ - pdev->dev.parent = vexpress_syscfg_bridge; - - return platform_device_register(pdev); -} - - static int vexpress_syscfg_probe(struct platform_device *pdev) { struct vexpress_syscfg *syscfg; @@ -303,10 +273,6 @@ static int vexpress_syscfg_probe(struct platform_device *pdev) if (IS_ERR(bridge)) return PTR_ERR(bridge); - /* Non-DT case */ - if (!pdev->dev.of_node) - vexpress_syscfg_bridge = bridge; - return 0; } |