* [PATCH v2 0/3] g_NCR5380: Modernization @ 2016-09-27 19:00 Ondrej Zary 2016-09-27 19:00 ` [PATCH 1/3] g_NCR5380: Remove deprecated __setup Ondrej Zary ` (3 more replies) 0 siblings, 4 replies; 13+ messages in thread From: Ondrej Zary @ 2016-09-27 19:00 UTC (permalink / raw) To: Christoph Hellwig; +Cc: Finn Thain, linux-scsi, linux-kernel This small patch series removes deprecated code from g_NCR5380 driver and converts it from scsi_module.c to scsi_add_host(). Tested with: HP C2502 (53C400A chip) Canon FG2-5202 (53C400 chip, memory-mapped) DTC-3181L (DTCT-436P chip, PnP) --- Changes in v2: - updated Documentation/scsi/g_NCR5380.txt - kept old-style module parameters for compatibility - added missing NCR5380_exit() call - fixed error propagation from init - simplified driver registration -- Ondrej Zary ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH 1/3] g_NCR5380: Remove deprecated __setup 2016-09-27 19:00 [PATCH v2 0/3] g_NCR5380: Modernization Ondrej Zary @ 2016-09-27 19:00 ` Ondrej Zary 2016-09-28 22:56 ` Finn Thain 2016-09-27 19:00 ` [PATCH 2/3] g_NCR5380: Reduce overrides[] from array to struct Ondrej Zary ` (2 subsequent siblings) 3 siblings, 1 reply; 13+ messages in thread From: Ondrej Zary @ 2016-09-27 19:00 UTC (permalink / raw) To: Christoph Hellwig; +Cc: Finn Thain, linux-scsi, linux-kernel Remove deprecated __setup for parsing command line parameters. g_NCR5380.* parameters could be used instead. This might break existing setups with g_NCR5380 built-in (if there are any). But it has to go in order to remove the overrides[] array. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> --- Documentation/scsi/g_NCR5380.txt | 10 --- drivers/scsi/g_NCR5380.c | 135 -------------------------------------- 2 files changed, 145 deletions(-) diff --git a/Documentation/scsi/g_NCR5380.txt b/Documentation/scsi/g_NCR5380.txt index fd88015..843cbae 100644 --- a/Documentation/scsi/g_NCR5380.txt +++ b/Documentation/scsi/g_NCR5380.txt @@ -21,16 +21,6 @@ NCR53c400 card, the Trantor T130B in its default configuration: The NCR53c400 does not support DMA but it does have Pseudo-DMA which is supported by the driver. -If the default configuration does not work for you, you can use the kernel -command lines (eg using the lilo append command): - ncr5380=addr,irq - ncr53c400=addr,irq - ncr53c400a=addr,irq - dtc3181e=addr,irq - -The driver does not probe for any addresses or ports other than those in -the OVERRIDE or given to the kernel as above. - This driver provides some information on what it has detected in /proc/scsi/g_NCR5380/x where x is the scsi card number as detected at boot time. More info to come in the future. diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c index 516bd6c..7e50b44e 100644 --- a/drivers/scsi/g_NCR5380.c +++ b/drivers/scsi/g_NCR5380.c @@ -56,136 +56,6 @@ static struct override { #define NO_OVERRIDES ARRAY_SIZE(overrides) -#ifndef MODULE - -/** - * internal_setup - handle lilo command string override - * @board: BOARD_* identifier for the board - * @str: unused - * @ints: numeric parameters - * - * Do LILO command line initialization of the overrides array. Display - * errors when needed - * - * Locks: none - */ - -static void __init internal_setup(int board, char *str, int *ints) -{ - static int commandline_current; - switch (board) { - case BOARD_NCR5380: - if (ints[0] != 2 && ints[0] != 3) { - printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); - return; - } - break; - case BOARD_NCR53C400: - if (ints[0] != 2) { - printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); - return; - } - break; - case BOARD_NCR53C400A: - if (ints[0] != 2) { - printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); - return; - } - break; - case BOARD_DTC3181E: - if (ints[0] != 2) { - printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); - return; - } - break; - } - - if (commandline_current < NO_OVERRIDES) { - overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; - overrides[commandline_current].irq = ints[2]; - if (ints[0] == 3) - overrides[commandline_current].dma = ints[3]; - else - overrides[commandline_current].dma = DMA_NONE; - overrides[commandline_current].board = board; - ++commandline_current; - } -} - - -/** - * do_NCR53C80_setup - set up entry point - * @str: unused - * - * Setup function invoked at boot to parse the ncr5380= command - * line. - */ - -static int __init do_NCR5380_setup(char *str) -{ - int ints[10]; - - get_options(str, ARRAY_SIZE(ints), ints); - internal_setup(BOARD_NCR5380, str, ints); - return 1; -} - -/** - * do_NCR53C400_setup - set up entry point - * @str: unused - * @ints: integer parameters from kernel setup code - * - * Setup function invoked at boot to parse the ncr53c400= command - * line. - */ - -static int __init do_NCR53C400_setup(char *str) -{ - int ints[10]; - - get_options(str, ARRAY_SIZE(ints), ints); - internal_setup(BOARD_NCR53C400, str, ints); - return 1; -} - -/** - * do_NCR53C400A_setup - set up entry point - * @str: unused - * @ints: integer parameters from kernel setup code - * - * Setup function invoked at boot to parse the ncr53c400a= command - * line. - */ - -static int __init do_NCR53C400A_setup(char *str) -{ - int ints[10]; - - get_options(str, ARRAY_SIZE(ints), ints); - internal_setup(BOARD_NCR53C400A, str, ints); - return 1; -} - -/** - * do_DTC3181E_setup - set up entry point - * @str: unused - * @ints: integer parameters from kernel setup code - * - * Setup function invoked at boot to parse the dtc3181e= command - * line. - */ - -static int __init do_DTC3181E_setup(char *str) -{ - int ints[10]; - - get_options(str, ARRAY_SIZE(ints), ints); - internal_setup(BOARD_DTC3181E, str, ints); - return 1; -} - -#endif - #ifndef SCSI_G_NCR5380_MEM /* * Configure I/O address of 53C400A or DTC436 by writing magic numbers @@ -741,8 +611,3 @@ static struct isapnp_device_id id_table[] = { MODULE_DEVICE_TABLE(isapnp, id_table); #endif - -__setup("ncr5380=", do_NCR5380_setup); -__setup("ncr53c400=", do_NCR53C400_setup); -__setup("ncr53c400a=", do_NCR53C400A_setup); -__setup("dtc3181e=", do_DTC3181E_setup); -- Ondrej Zary ^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH 1/3] g_NCR5380: Remove deprecated __setup 2016-09-27 19:00 ` [PATCH 1/3] g_NCR5380: Remove deprecated __setup Ondrej Zary @ 2016-09-28 22:56 ` Finn Thain 0 siblings, 0 replies; 13+ messages in thread From: Finn Thain @ 2016-09-28 22:56 UTC (permalink / raw) To: Ondrej Zary; +Cc: Christoph Hellwig, linux-scsi, linux-kernel Acked-by: Finn Thain <fthain@telegraphics.com.au> On Tue, 27 Sep 2016, Ondrej Zary wrote: > Remove deprecated __setup for parsing command line parameters. > g_NCR5380.* parameters could be used instead. > > This might break existing setups with g_NCR5380 built-in (if there are > any). But it has to go in order to remove the overrides[] array. Instead of "in order to" I think you meant "along with" (otherwise it seems to be a non-sequitur). No matter. -- > > Signed-off-by: Ondrej Zary <linux@rainbow-software.org> > --- > Documentation/scsi/g_NCR5380.txt | 10 --- > drivers/scsi/g_NCR5380.c | 135 -------------------------------------- > 2 files changed, 145 deletions(-) > > diff --git a/Documentation/scsi/g_NCR5380.txt b/Documentation/scsi/g_NCR5380.txt > index fd88015..843cbae 100644 > --- a/Documentation/scsi/g_NCR5380.txt > +++ b/Documentation/scsi/g_NCR5380.txt > @@ -21,16 +21,6 @@ NCR53c400 card, the Trantor T130B in its default configuration: > The NCR53c400 does not support DMA but it does have Pseudo-DMA which is > supported by the driver. > > -If the default configuration does not work for you, you can use the kernel > -command lines (eg using the lilo append command): > - ncr5380=addr,irq > - ncr53c400=addr,irq > - ncr53c400a=addr,irq > - dtc3181e=addr,irq > - > -The driver does not probe for any addresses or ports other than those in > -the OVERRIDE or given to the kernel as above. > - > This driver provides some information on what it has detected in > /proc/scsi/g_NCR5380/x where x is the scsi card number as detected at boot > time. More info to come in the future. > diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c > index 516bd6c..7e50b44e 100644 > --- a/drivers/scsi/g_NCR5380.c > +++ b/drivers/scsi/g_NCR5380.c > @@ -56,136 +56,6 @@ static struct override { > > #define NO_OVERRIDES ARRAY_SIZE(overrides) > > -#ifndef MODULE > - > -/** > - * internal_setup - handle lilo command string override > - * @board: BOARD_* identifier for the board > - * @str: unused > - * @ints: numeric parameters > - * > - * Do LILO command line initialization of the overrides array. Display > - * errors when needed > - * > - * Locks: none > - */ > - > -static void __init internal_setup(int board, char *str, int *ints) > -{ > - static int commandline_current; > - switch (board) { > - case BOARD_NCR5380: > - if (ints[0] != 2 && ints[0] != 3) { > - printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); > - return; > - } > - break; > - case BOARD_NCR53C400: > - if (ints[0] != 2) { > - printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); > - return; > - } > - break; > - case BOARD_NCR53C400A: > - if (ints[0] != 2) { > - printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); > - return; > - } > - break; > - case BOARD_DTC3181E: > - if (ints[0] != 2) { > - printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); > - return; > - } > - break; > - } > - > - if (commandline_current < NO_OVERRIDES) { > - overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; > - overrides[commandline_current].irq = ints[2]; > - if (ints[0] == 3) > - overrides[commandline_current].dma = ints[3]; > - else > - overrides[commandline_current].dma = DMA_NONE; > - overrides[commandline_current].board = board; > - ++commandline_current; > - } > -} > - > - > -/** > - * do_NCR53C80_setup - set up entry point > - * @str: unused > - * > - * Setup function invoked at boot to parse the ncr5380= command > - * line. > - */ > - > -static int __init do_NCR5380_setup(char *str) > -{ > - int ints[10]; > - > - get_options(str, ARRAY_SIZE(ints), ints); > - internal_setup(BOARD_NCR5380, str, ints); > - return 1; > -} > - > -/** > - * do_NCR53C400_setup - set up entry point > - * @str: unused > - * @ints: integer parameters from kernel setup code > - * > - * Setup function invoked at boot to parse the ncr53c400= command > - * line. > - */ > - > -static int __init do_NCR53C400_setup(char *str) > -{ > - int ints[10]; > - > - get_options(str, ARRAY_SIZE(ints), ints); > - internal_setup(BOARD_NCR53C400, str, ints); > - return 1; > -} > - > -/** > - * do_NCR53C400A_setup - set up entry point > - * @str: unused > - * @ints: integer parameters from kernel setup code > - * > - * Setup function invoked at boot to parse the ncr53c400a= command > - * line. > - */ > - > -static int __init do_NCR53C400A_setup(char *str) > -{ > - int ints[10]; > - > - get_options(str, ARRAY_SIZE(ints), ints); > - internal_setup(BOARD_NCR53C400A, str, ints); > - return 1; > -} > - > -/** > - * do_DTC3181E_setup - set up entry point > - * @str: unused > - * @ints: integer parameters from kernel setup code > - * > - * Setup function invoked at boot to parse the dtc3181e= command > - * line. > - */ > - > -static int __init do_DTC3181E_setup(char *str) > -{ > - int ints[10]; > - > - get_options(str, ARRAY_SIZE(ints), ints); > - internal_setup(BOARD_DTC3181E, str, ints); > - return 1; > -} > - > -#endif > - > #ifndef SCSI_G_NCR5380_MEM > /* > * Configure I/O address of 53C400A or DTC436 by writing magic numbers > @@ -741,8 +611,3 @@ static struct isapnp_device_id id_table[] = { > > MODULE_DEVICE_TABLE(isapnp, id_table); > #endif > - > -__setup("ncr5380=", do_NCR5380_setup); > -__setup("ncr53c400=", do_NCR53C400_setup); > -__setup("ncr53c400a=", do_NCR53C400A_setup); > -__setup("dtc3181e=", do_DTC3181E_setup); > ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH 2/3] g_NCR5380: Reduce overrides[] from array to struct 2016-09-27 19:00 [PATCH v2 0/3] g_NCR5380: Modernization Ondrej Zary 2016-09-27 19:00 ` [PATCH 1/3] g_NCR5380: Remove deprecated __setup Ondrej Zary @ 2016-09-27 19:00 ` Ondrej Zary 2016-09-28 22:57 ` Finn Thain 2016-09-27 19:00 ` [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary 2016-09-30 1:53 ` [PATCH v2 0/3] g_NCR5380: Modernization Martin K. Petersen 3 siblings, 1 reply; 13+ messages in thread From: Ondrej Zary @ 2016-09-27 19:00 UTC (permalink / raw) To: Christoph Hellwig; +Cc: Finn Thain, linux-scsi, linux-kernel Remove compile-time card type definition GENERIC_NCR5380_OVERRIDE. Then remove all code iterating the overrides[] array and reduce it to struct card. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> --- drivers/scsi/g_NCR5380.c | 351 ++++++++++++++++++++++------------------------ 1 file changed, 167 insertions(+), 184 deletions(-) diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c index 7e50b44e..5162de6 100644 --- a/drivers/scsi/g_NCR5380.c +++ b/drivers/scsi/g_NCR5380.c @@ -42,19 +42,12 @@ static int ncr_53c400a; static int dtc_3181e; static int hp_c2502; -static struct override { +static struct card { NCR5380_map_type NCR5380_map_name; int irq; int dma; int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ -} overrides -#ifdef GENERIC_NCR5380_OVERRIDE -[] __initdata = GENERIC_NCR5380_OVERRIDE; -#else -[1] __initdata = { { 0,},}; -#endif - -#define NO_OVERRIDES ARRAY_SIZE(overrides) +} card; #ifndef SCSI_G_NCR5380_MEM /* @@ -85,16 +78,13 @@ static void magic_configure(int idx, u8 irq, u8 magic[]) * @tpnt: the scsi template * * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E - * and DTC436(ISAPnP) controllers. If overrides have been set we use - * them. + * and DTC436(ISAPnP) controllers. * * Locks: none */ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) { - static int current_override; - int count; unsigned int *ports; u8 *magic = NULL; #ifndef SCSI_G_NCR5380_MEM @@ -124,28 +114,25 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) #endif if (ncr_irq) - overrides[0].irq = ncr_irq; + card.irq = ncr_irq; if (ncr_dma) - overrides[0].dma = ncr_dma; + card.dma = ncr_dma; if (ncr_addr) - overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; + card.NCR5380_map_name = (NCR5380_map_type) ncr_addr; if (ncr_5380) - overrides[0].board = BOARD_NCR5380; + card.board = BOARD_NCR5380; else if (ncr_53c400) - overrides[0].board = BOARD_NCR53C400; + card.board = BOARD_NCR53C400; else if (ncr_53c400a) - overrides[0].board = BOARD_NCR53C400A; + card.board = BOARD_NCR53C400A; else if (dtc_3181e) - overrides[0].board = BOARD_DTC3181E; + card.board = BOARD_DTC3181E; else if (hp_c2502) - overrides[0].board = BOARD_HP_C2502; + card.board = BOARD_HP_C2502; #ifndef SCSI_G_NCR5380_MEM - if (!current_override && isapnp_present()) { + if (isapnp_present()) { struct pnp_dev *dev = NULL; - count = 0; while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { - if (count >= NO_OVERRIDES) - break; if (pnp_device_attach(dev) < 0) continue; if (pnp_activate_dev(dev) < 0) { @@ -159,202 +146,198 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) continue; } if (pnp_irq_valid(dev, 0)) - overrides[count].irq = pnp_irq(dev, 0); + card.irq = pnp_irq(dev, 0); else - overrides[count].irq = NO_IRQ; + card.irq = NO_IRQ; if (pnp_dma_valid(dev, 0)) - overrides[count].dma = pnp_dma(dev, 0); + card.dma = pnp_dma(dev, 0); else - overrides[count].dma = DMA_NONE; - overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); - overrides[count].board = BOARD_DTC3181E; - count++; + card.dma = DMA_NONE; + card.NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); + card.board = BOARD_DTC3181E; + break; } } #endif - for (count = 0; current_override < NO_OVERRIDES; ++current_override) { - if (!(overrides[current_override].NCR5380_map_name)) - continue; + if (!(card.NCR5380_map_name)) + return 0; - ports = NULL; - flags = 0; - switch (overrides[current_override].board) { - case BOARD_NCR5380: - flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP; - break; - case BOARD_NCR53C400A: - ports = ncr_53c400a_ports; - magic = ncr_53c400a_magic; - break; - case BOARD_HP_C2502: - ports = ncr_53c400a_ports; - magic = hp_c2502_magic; - break; - case BOARD_DTC3181E: - ports = dtc_3181e_ports; - magic = ncr_53c400a_magic; - break; - } + ports = NULL; + flags = 0; + switch (card.board) { + case BOARD_NCR5380: + flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP; + break; + case BOARD_NCR53C400A: + ports = ncr_53c400a_ports; + magic = ncr_53c400a_magic; + break; + case BOARD_HP_C2502: + ports = ncr_53c400a_ports; + magic = hp_c2502_magic; + break; + case BOARD_DTC3181E: + ports = dtc_3181e_ports; + magic = ncr_53c400a_magic; + break; + } #ifndef SCSI_G_NCR5380_MEM - if (ports && magic) { - /* wakeup sequence for the NCR53C400A and DTC3181E */ - - /* Disable the adapter and look for a free io port */ - magic_configure(-1, 0, magic); - - region_size = 16; - - if (overrides[current_override].NCR5380_map_name != PORT_AUTO) - for (i = 0; ports[i]; i++) { - if (!request_region(ports[i], region_size, "ncr53c80")) - continue; - if (overrides[current_override].NCR5380_map_name == ports[i]) - break; - release_region(ports[i], region_size); - } else - for (i = 0; ports[i]; i++) { - if (!request_region(ports[i], region_size, "ncr53c80")) - continue; - if (inb(ports[i]) == 0xff) - break; - release_region(ports[i], region_size); - } - if (ports[i]) { - /* At this point we have our region reserved */ - magic_configure(i, 0, magic); /* no IRQ yet */ - outb(0xc0, ports[i] + 9); - if (inb(ports[i] + 9) != 0x80) + if (ports && magic) { + /* wakeup sequence for the NCR53C400A and DTC3181E */ + + /* Disable the adapter and look for a free io port */ + magic_configure(-1, 0, magic); + + region_size = 16; + + if (card.NCR5380_map_name != PORT_AUTO) + for (i = 0; ports[i]; i++) { + if (!request_region(ports[i], region_size, "ncr53c80")) continue; - overrides[current_override].NCR5380_map_name = ports[i]; - port_idx = i; - } else - continue; - } - else - { - /* Not a 53C400A style setup - just grab */ - region_size = 8; - if (!request_region(overrides[current_override].NCR5380_map_name, - region_size, "ncr5380")) - continue; - } + if (card.NCR5380_map_name == ports[i]) + break; + release_region(ports[i], region_size); + } else + for (i = 0; ports[i]; i++) { + if (!request_region(ports[i], region_size, "ncr53c80")) + continue; + if (inb(ports[i]) == 0xff) + break; + release_region(ports[i], region_size); + } + if (ports[i]) { + /* At this point we have our region reserved */ + magic_configure(i, 0, magic); /* no IRQ yet */ + outb(0xc0, ports[i] + 9); + if (inb(ports[i] + 9) != 0x80) + return 0; + card.NCR5380_map_name = ports[i]; + port_idx = i; + } else + return 0; + } + else + { + /* Not a 53C400A style setup - just grab */ + region_size = 8; + if (!request_region(card.NCR5380_map_name, + region_size, "ncr5380")) + return 0; + } #else - base = overrides[current_override].NCR5380_map_name; - iomem_size = NCR53C400_region_size; - if (!request_mem_region(base, iomem_size, "ncr5380")) - continue; - iomem = ioremap(base, iomem_size); - if (!iomem) { - release_mem_region(base, iomem_size); - continue; - } + base = card.NCR5380_map_name; + iomem_size = NCR53C400_region_size; + if (!request_mem_region(base, iomem_size, "ncr5380")) + return 0; + iomem = ioremap(base, iomem_size); + if (!iomem) { + release_mem_region(base, iomem_size); + return 0; + } #endif - instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); - if (instance == NULL) - goto out_release; - hostdata = shost_priv(instance); + instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); + if (instance == NULL) + goto out_release; + hostdata = shost_priv(instance); #ifndef SCSI_G_NCR5380_MEM - instance->io_port = overrides[current_override].NCR5380_map_name; - instance->n_io_port = region_size; - hostdata->io_width = 1; /* 8-bit PDMA by default */ - - /* - * On NCR53C400 boards, NCR5380 registers are mapped 8 past - * the base address. - */ - switch (overrides[current_override].board) { - case BOARD_NCR53C400: - instance->io_port += 8; - hostdata->c400_ctl_status = 0; - hostdata->c400_blk_cnt = 1; - hostdata->c400_host_buf = 4; - break; - case BOARD_DTC3181E: - hostdata->io_width = 2; /* 16-bit PDMA */ - /* fall through */ - case BOARD_NCR53C400A: - case BOARD_HP_C2502: - hostdata->c400_ctl_status = 9; - hostdata->c400_blk_cnt = 10; - hostdata->c400_host_buf = 8; - break; - } + instance->io_port = card.NCR5380_map_name; + instance->n_io_port = region_size; + hostdata->io_width = 1; /* 8-bit PDMA by default */ + + /* + * On NCR53C400 boards, NCR5380 registers are mapped 8 past + * the base address. + */ + switch (card.board) { + case BOARD_NCR53C400: + instance->io_port += 8; + hostdata->c400_ctl_status = 0; + hostdata->c400_blk_cnt = 1; + hostdata->c400_host_buf = 4; + break; + case BOARD_DTC3181E: + hostdata->io_width = 2; /* 16-bit PDMA */ + /* fall through */ + case BOARD_NCR53C400A: + case BOARD_HP_C2502: + hostdata->c400_ctl_status = 9; + hostdata->c400_blk_cnt = 10; + hostdata->c400_host_buf = 8; + break; + } #else - instance->base = overrides[current_override].NCR5380_map_name; - hostdata->iomem = iomem; - hostdata->iomem_size = iomem_size; - switch (overrides[current_override].board) { - case BOARD_NCR53C400: - hostdata->c400_ctl_status = 0x100; - hostdata->c400_blk_cnt = 0x101; - hostdata->c400_host_buf = 0x104; - break; - case BOARD_DTC3181E: - case BOARD_NCR53C400A: - case BOARD_HP_C2502: - pr_err(DRV_MODULE_NAME ": unknown register offsets\n"); - goto out_unregister; - } + instance->base = card.NCR5380_map_name; + hostdata->iomem = iomem; + hostdata->iomem_size = iomem_size; + switch (card.board) { + case BOARD_NCR53C400: + hostdata->c400_ctl_status = 0x100; + hostdata->c400_blk_cnt = 0x101; + hostdata->c400_host_buf = 0x104; + break; + case BOARD_DTC3181E: + case BOARD_NCR53C400A: + case BOARD_HP_C2502: + pr_err(DRV_MODULE_NAME ": unknown register offsets\n"); + goto out_unregister; + } #endif - if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP)) - goto out_unregister; + if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP)) + goto out_unregister; - switch (overrides[current_override].board) { - case BOARD_NCR53C400: - case BOARD_DTC3181E: - case BOARD_NCR53C400A: - case BOARD_HP_C2502: - NCR5380_write(hostdata->c400_ctl_status, CSR_BASE); - } + switch (card.board) { + case BOARD_NCR53C400: + case BOARD_DTC3181E: + case BOARD_NCR53C400A: + case BOARD_HP_C2502: + NCR5380_write(hostdata->c400_ctl_status, CSR_BASE); + } - NCR5380_maybe_reset_bus(instance); + NCR5380_maybe_reset_bus(instance); - if (overrides[current_override].irq != IRQ_AUTO) - instance->irq = overrides[current_override].irq; - else - instance->irq = NCR5380_probe_irq(instance, 0xffff); + if (card.irq != IRQ_AUTO) + instance->irq = card.irq; + else + instance->irq = NCR5380_probe_irq(instance, 0xffff); - /* Compatibility with documented NCR5380 kernel parameters */ - if (instance->irq == 255) - instance->irq = NO_IRQ; + /* Compatibility with documented NCR5380 kernel parameters */ + if (instance->irq == 255) + instance->irq = NO_IRQ; - if (instance->irq != NO_IRQ) { + if (instance->irq != NO_IRQ) { #ifndef SCSI_G_NCR5380_MEM - /* set IRQ for HP C2502 */ - if (overrides[current_override].board == BOARD_HP_C2502) - magic_configure(port_idx, instance->irq, magic); + /* set IRQ for HP C2502 */ + if (card.board == BOARD_HP_C2502) + magic_configure(port_idx, instance->irq, magic); #endif - if (request_irq(instance->irq, generic_NCR5380_intr, - 0, "NCR5380", instance)) { - printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); - instance->irq = NO_IRQ; - } - } - - if (instance->irq == NO_IRQ) { - printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); - printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); + if (request_irq(instance->irq, generic_NCR5380_intr, + 0, "NCR5380", instance)) { + printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); + instance->irq = NO_IRQ; } + } - ++current_override; - ++count; + if (instance->irq == NO_IRQ) { + printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); + printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); } - return count; + + return 1; out_unregister: scsi_unregister(instance); out_release: #ifndef SCSI_G_NCR5380_MEM - release_region(overrides[current_override].NCR5380_map_name, region_size); + release_region(card.NCR5380_map_name, region_size); #else iounmap(iomem); release_mem_region(base, iomem_size); #endif - return count; + return 0; } /** -- Ondrej Zary ^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH 2/3] g_NCR5380: Reduce overrides[] from array to struct 2016-09-27 19:00 ` [PATCH 2/3] g_NCR5380: Reduce overrides[] from array to struct Ondrej Zary @ 2016-09-28 22:57 ` Finn Thain 0 siblings, 0 replies; 13+ messages in thread From: Finn Thain @ 2016-09-28 22:57 UTC (permalink / raw) To: Ondrej Zary; +Cc: Christoph Hellwig, linux-scsi, linux-kernel Acked-by: Finn Thain <fthain@telegraphics.com.au> On Tue, 27 Sep 2016, Ondrej Zary wrote: > Remove compile-time card type definition GENERIC_NCR5380_OVERRIDE. > Then remove all code iterating the overrides[] array and reduce it to > struct card. > > Signed-off-by: Ondrej Zary <linux@rainbow-software.org> > --- > drivers/scsi/g_NCR5380.c | 351 ++++++++++++++++++++++------------------------ > 1 file changed, 167 insertions(+), 184 deletions(-) > > diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c > index 7e50b44e..5162de6 100644 > --- a/drivers/scsi/g_NCR5380.c > +++ b/drivers/scsi/g_NCR5380.c > @@ -42,19 +42,12 @@ static int ncr_53c400a; > static int dtc_3181e; > static int hp_c2502; > > -static struct override { > +static struct card { > NCR5380_map_type NCR5380_map_name; > int irq; > int dma; > int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ > -} overrides > -#ifdef GENERIC_NCR5380_OVERRIDE > -[] __initdata = GENERIC_NCR5380_OVERRIDE; > -#else > -[1] __initdata = { { 0,},}; > -#endif > - > -#define NO_OVERRIDES ARRAY_SIZE(overrides) > +} card; > > #ifndef SCSI_G_NCR5380_MEM > /* > @@ -85,16 +78,13 @@ static void magic_configure(int idx, u8 irq, u8 magic[]) > * @tpnt: the scsi template > * > * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E > - * and DTC436(ISAPnP) controllers. If overrides have been set we use > - * them. > + * and DTC436(ISAPnP) controllers. > * > * Locks: none > */ > > static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > { > - static int current_override; > - int count; > unsigned int *ports; > u8 *magic = NULL; > #ifndef SCSI_G_NCR5380_MEM > @@ -124,28 +114,25 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > #endif > > if (ncr_irq) > - overrides[0].irq = ncr_irq; > + card.irq = ncr_irq; > if (ncr_dma) > - overrides[0].dma = ncr_dma; > + card.dma = ncr_dma; > if (ncr_addr) > - overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; > + card.NCR5380_map_name = (NCR5380_map_type) ncr_addr; > if (ncr_5380) > - overrides[0].board = BOARD_NCR5380; > + card.board = BOARD_NCR5380; > else if (ncr_53c400) > - overrides[0].board = BOARD_NCR53C400; > + card.board = BOARD_NCR53C400; > else if (ncr_53c400a) > - overrides[0].board = BOARD_NCR53C400A; > + card.board = BOARD_NCR53C400A; > else if (dtc_3181e) > - overrides[0].board = BOARD_DTC3181E; > + card.board = BOARD_DTC3181E; > else if (hp_c2502) > - overrides[0].board = BOARD_HP_C2502; > + card.board = BOARD_HP_C2502; > #ifndef SCSI_G_NCR5380_MEM > - if (!current_override && isapnp_present()) { > + if (isapnp_present()) { > struct pnp_dev *dev = NULL; > - count = 0; > while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { > - if (count >= NO_OVERRIDES) > - break; > if (pnp_device_attach(dev) < 0) > continue; > if (pnp_activate_dev(dev) < 0) { > @@ -159,202 +146,198 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > continue; > } > if (pnp_irq_valid(dev, 0)) > - overrides[count].irq = pnp_irq(dev, 0); > + card.irq = pnp_irq(dev, 0); > else > - overrides[count].irq = NO_IRQ; > + card.irq = NO_IRQ; > if (pnp_dma_valid(dev, 0)) > - overrides[count].dma = pnp_dma(dev, 0); > + card.dma = pnp_dma(dev, 0); > else > - overrides[count].dma = DMA_NONE; > - overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); > - overrides[count].board = BOARD_DTC3181E; > - count++; > + card.dma = DMA_NONE; > + card.NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); > + card.board = BOARD_DTC3181E; > + break; > } > } > #endif > > - for (count = 0; current_override < NO_OVERRIDES; ++current_override) { > - if (!(overrides[current_override].NCR5380_map_name)) > - continue; > + if (!(card.NCR5380_map_name)) > + return 0; > > - ports = NULL; > - flags = 0; > - switch (overrides[current_override].board) { > - case BOARD_NCR5380: > - flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP; > - break; > - case BOARD_NCR53C400A: > - ports = ncr_53c400a_ports; > - magic = ncr_53c400a_magic; > - break; > - case BOARD_HP_C2502: > - ports = ncr_53c400a_ports; > - magic = hp_c2502_magic; > - break; > - case BOARD_DTC3181E: > - ports = dtc_3181e_ports; > - magic = ncr_53c400a_magic; > - break; > - } > + ports = NULL; > + flags = 0; > + switch (card.board) { > + case BOARD_NCR5380: > + flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP; > + break; > + case BOARD_NCR53C400A: > + ports = ncr_53c400a_ports; > + magic = ncr_53c400a_magic; > + break; > + case BOARD_HP_C2502: > + ports = ncr_53c400a_ports; > + magic = hp_c2502_magic; > + break; > + case BOARD_DTC3181E: > + ports = dtc_3181e_ports; > + magic = ncr_53c400a_magic; > + break; > + } > > #ifndef SCSI_G_NCR5380_MEM > - if (ports && magic) { > - /* wakeup sequence for the NCR53C400A and DTC3181E */ > - > - /* Disable the adapter and look for a free io port */ > - magic_configure(-1, 0, magic); > - > - region_size = 16; > - > - if (overrides[current_override].NCR5380_map_name != PORT_AUTO) > - for (i = 0; ports[i]; i++) { > - if (!request_region(ports[i], region_size, "ncr53c80")) > - continue; > - if (overrides[current_override].NCR5380_map_name == ports[i]) > - break; > - release_region(ports[i], region_size); > - } else > - for (i = 0; ports[i]; i++) { > - if (!request_region(ports[i], region_size, "ncr53c80")) > - continue; > - if (inb(ports[i]) == 0xff) > - break; > - release_region(ports[i], region_size); > - } > - if (ports[i]) { > - /* At this point we have our region reserved */ > - magic_configure(i, 0, magic); /* no IRQ yet */ > - outb(0xc0, ports[i] + 9); > - if (inb(ports[i] + 9) != 0x80) > + if (ports && magic) { > + /* wakeup sequence for the NCR53C400A and DTC3181E */ > + > + /* Disable the adapter and look for a free io port */ > + magic_configure(-1, 0, magic); > + > + region_size = 16; > + > + if (card.NCR5380_map_name != PORT_AUTO) > + for (i = 0; ports[i]; i++) { > + if (!request_region(ports[i], region_size, "ncr53c80")) > continue; > - overrides[current_override].NCR5380_map_name = ports[i]; > - port_idx = i; > - } else > - continue; > - } > - else > - { > - /* Not a 53C400A style setup - just grab */ > - region_size = 8; > - if (!request_region(overrides[current_override].NCR5380_map_name, > - region_size, "ncr5380")) > - continue; > - } > + if (card.NCR5380_map_name == ports[i]) > + break; > + release_region(ports[i], region_size); > + } else > + for (i = 0; ports[i]; i++) { > + if (!request_region(ports[i], region_size, "ncr53c80")) > + continue; > + if (inb(ports[i]) == 0xff) > + break; > + release_region(ports[i], region_size); > + } > + if (ports[i]) { > + /* At this point we have our region reserved */ > + magic_configure(i, 0, magic); /* no IRQ yet */ > + outb(0xc0, ports[i] + 9); > + if (inb(ports[i] + 9) != 0x80) > + return 0; > + card.NCR5380_map_name = ports[i]; > + port_idx = i; > + } else > + return 0; > + } > + else > + { > + /* Not a 53C400A style setup - just grab */ > + region_size = 8; > + if (!request_region(card.NCR5380_map_name, > + region_size, "ncr5380")) > + return 0; > + } > #else > - base = overrides[current_override].NCR5380_map_name; > - iomem_size = NCR53C400_region_size; > - if (!request_mem_region(base, iomem_size, "ncr5380")) > - continue; > - iomem = ioremap(base, iomem_size); > - if (!iomem) { > - release_mem_region(base, iomem_size); > - continue; > - } > + base = card.NCR5380_map_name; > + iomem_size = NCR53C400_region_size; > + if (!request_mem_region(base, iomem_size, "ncr5380")) > + return 0; > + iomem = ioremap(base, iomem_size); > + if (!iomem) { > + release_mem_region(base, iomem_size); > + return 0; > + } > #endif > - instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); > - if (instance == NULL) > - goto out_release; > - hostdata = shost_priv(instance); > + instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); > + if (instance == NULL) > + goto out_release; > + hostdata = shost_priv(instance); > > #ifndef SCSI_G_NCR5380_MEM > - instance->io_port = overrides[current_override].NCR5380_map_name; > - instance->n_io_port = region_size; > - hostdata->io_width = 1; /* 8-bit PDMA by default */ > - > - /* > - * On NCR53C400 boards, NCR5380 registers are mapped 8 past > - * the base address. > - */ > - switch (overrides[current_override].board) { > - case BOARD_NCR53C400: > - instance->io_port += 8; > - hostdata->c400_ctl_status = 0; > - hostdata->c400_blk_cnt = 1; > - hostdata->c400_host_buf = 4; > - break; > - case BOARD_DTC3181E: > - hostdata->io_width = 2; /* 16-bit PDMA */ > - /* fall through */ > - case BOARD_NCR53C400A: > - case BOARD_HP_C2502: > - hostdata->c400_ctl_status = 9; > - hostdata->c400_blk_cnt = 10; > - hostdata->c400_host_buf = 8; > - break; > - } > + instance->io_port = card.NCR5380_map_name; > + instance->n_io_port = region_size; > + hostdata->io_width = 1; /* 8-bit PDMA by default */ > + > + /* > + * On NCR53C400 boards, NCR5380 registers are mapped 8 past > + * the base address. > + */ > + switch (card.board) { > + case BOARD_NCR53C400: > + instance->io_port += 8; > + hostdata->c400_ctl_status = 0; > + hostdata->c400_blk_cnt = 1; > + hostdata->c400_host_buf = 4; > + break; > + case BOARD_DTC3181E: > + hostdata->io_width = 2; /* 16-bit PDMA */ > + /* fall through */ > + case BOARD_NCR53C400A: > + case BOARD_HP_C2502: > + hostdata->c400_ctl_status = 9; > + hostdata->c400_blk_cnt = 10; > + hostdata->c400_host_buf = 8; > + break; > + } > #else > - instance->base = overrides[current_override].NCR5380_map_name; > - hostdata->iomem = iomem; > - hostdata->iomem_size = iomem_size; > - switch (overrides[current_override].board) { > - case BOARD_NCR53C400: > - hostdata->c400_ctl_status = 0x100; > - hostdata->c400_blk_cnt = 0x101; > - hostdata->c400_host_buf = 0x104; > - break; > - case BOARD_DTC3181E: > - case BOARD_NCR53C400A: > - case BOARD_HP_C2502: > - pr_err(DRV_MODULE_NAME ": unknown register offsets\n"); > - goto out_unregister; > - } > + instance->base = card.NCR5380_map_name; > + hostdata->iomem = iomem; > + hostdata->iomem_size = iomem_size; > + switch (card.board) { > + case BOARD_NCR53C400: > + hostdata->c400_ctl_status = 0x100; > + hostdata->c400_blk_cnt = 0x101; > + hostdata->c400_host_buf = 0x104; > + break; > + case BOARD_DTC3181E: > + case BOARD_NCR53C400A: > + case BOARD_HP_C2502: > + pr_err(DRV_MODULE_NAME ": unknown register offsets\n"); > + goto out_unregister; > + } > #endif > > - if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP)) > - goto out_unregister; > + if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP)) > + goto out_unregister; > > - switch (overrides[current_override].board) { > - case BOARD_NCR53C400: > - case BOARD_DTC3181E: > - case BOARD_NCR53C400A: > - case BOARD_HP_C2502: > - NCR5380_write(hostdata->c400_ctl_status, CSR_BASE); > - } > + switch (card.board) { > + case BOARD_NCR53C400: > + case BOARD_DTC3181E: > + case BOARD_NCR53C400A: > + case BOARD_HP_C2502: > + NCR5380_write(hostdata->c400_ctl_status, CSR_BASE); > + } > > - NCR5380_maybe_reset_bus(instance); > + NCR5380_maybe_reset_bus(instance); > > - if (overrides[current_override].irq != IRQ_AUTO) > - instance->irq = overrides[current_override].irq; > - else > - instance->irq = NCR5380_probe_irq(instance, 0xffff); > + if (card.irq != IRQ_AUTO) > + instance->irq = card.irq; > + else > + instance->irq = NCR5380_probe_irq(instance, 0xffff); > > - /* Compatibility with documented NCR5380 kernel parameters */ > - if (instance->irq == 255) > - instance->irq = NO_IRQ; > + /* Compatibility with documented NCR5380 kernel parameters */ > + if (instance->irq == 255) > + instance->irq = NO_IRQ; > > - if (instance->irq != NO_IRQ) { > + if (instance->irq != NO_IRQ) { > #ifndef SCSI_G_NCR5380_MEM > - /* set IRQ for HP C2502 */ > - if (overrides[current_override].board == BOARD_HP_C2502) > - magic_configure(port_idx, instance->irq, magic); > + /* set IRQ for HP C2502 */ > + if (card.board == BOARD_HP_C2502) > + magic_configure(port_idx, instance->irq, magic); > #endif > - if (request_irq(instance->irq, generic_NCR5380_intr, > - 0, "NCR5380", instance)) { > - printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); > - instance->irq = NO_IRQ; > - } > - } > - > - if (instance->irq == NO_IRQ) { > - printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); > - printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); > + if (request_irq(instance->irq, generic_NCR5380_intr, > + 0, "NCR5380", instance)) { > + printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); > + instance->irq = NO_IRQ; > } > + } > > - ++current_override; > - ++count; > + if (instance->irq == NO_IRQ) { > + printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); > + printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); > } > - return count; > + > + return 1; > > out_unregister: > scsi_unregister(instance); > out_release: > #ifndef SCSI_G_NCR5380_MEM > - release_region(overrides[current_override].NCR5380_map_name, region_size); > + release_region(card.NCR5380_map_name, region_size); > #else > iounmap(iomem); > release_mem_region(base, iomem_size); > #endif > - return count; > + return 0; > } > > /** > ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH 3/3] g_NCR5380: Stop using scsi_module.c 2016-09-27 19:00 [PATCH v2 0/3] g_NCR5380: Modernization Ondrej Zary 2016-09-27 19:00 ` [PATCH 1/3] g_NCR5380: Remove deprecated __setup Ondrej Zary 2016-09-27 19:00 ` [PATCH 2/3] g_NCR5380: Reduce overrides[] from array to struct Ondrej Zary @ 2016-09-27 19:00 ` Ondrej Zary 2016-09-28 22:57 ` Finn Thain 2016-09-30 1:53 ` [PATCH v2 0/3] g_NCR5380: Modernization Martin K. Petersen 3 siblings, 1 reply; 13+ messages in thread From: Ondrej Zary @ 2016-09-27 19:00 UTC (permalink / raw) To: Christoph Hellwig; +Cc: Finn Thain, linux-scsi, linux-kernel Convert g_NCR5380 to use scsi_add_host instead of scsi_module.c Use pnp_driver and isa_driver to manage cards. In order to support multiple cards, new module parameter format is introduced. The old parameters are kept for compatibility. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> --- Documentation/scsi/g_NCR5380.txt | 24 ++- drivers/scsi/g_NCR5380.c | 335 ++++++++++++++++++++++---------------- drivers/scsi/g_NCR5380.h | 8 - 3 files changed, 215 insertions(+), 152 deletions(-) diff --git a/Documentation/scsi/g_NCR5380.txt b/Documentation/scsi/g_NCR5380.txt index 843cbae..e2c1879 100644 --- a/Documentation/scsi/g_NCR5380.txt +++ b/Documentation/scsi/g_NCR5380.txt @@ -28,6 +28,16 @@ time. More info to come in the future. This driver works as a module. When included as a module, parameters can be passed on the insmod/modprobe command line: + irq=xx[,...] the interrupt(s) + base=xx[,...] the port or base address(es) (for port or memory mapped, resp.) + card=xx[,...] card type(s): + 0 = NCR5380, + 1 = NCR53C400, + 2 = NCR53C400A, + 3 = Domex Technology Corp 3181E (DTC3181E) + 4 = Hewlett Packard C2502 + +These old-style parameters can support only one card: ncr_irq=xx the interrupt ncr_addr=xx the port or base address (for port or memory mapped, resp.) @@ -36,11 +46,19 @@ command line: ncr_53c400a=1 to set up for a NCR53C400A board dtc_3181e=1 to set up for a Domex Technology Corp 3181E board hp_c2502=1 to set up for a Hewlett Packard C2502 board + e.g. -modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 +OLD: modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 +NEW: modprobe g_NCR5380 irq=5 base=0x350 card=0 for a port mapped NCR5380 board or -modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 - for a memory mapped NCR53C400 board with interrupts disabled. + +OLD: modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 +NEW: modprobe g_NCR5380 irq=255 base=0xc8000 card=1 + for a memory mapped NCR53C400 board with interrupts disabled or + +NEW: modprobe g_NCR5380 irq=0,7 base=0x240,0x300 card=3,4 + for two cards: DTC3181 (in non-PnP mode) at 0x240 with no IRQ + and HP C2502 at 0x300 with IRQ 7 (255 should be specified for no or DMA interrupt, 254 to autoprobe for an IRQ line if overridden on the command line.) diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c index 5162de6..cbf0103 100644 --- a/drivers/scsi/g_NCR5380.c +++ b/drivers/scsi/g_NCR5380.c @@ -30,24 +30,41 @@ #include "NCR5380.h" #include <linux/init.h> #include <linux/ioport.h> -#include <linux/isapnp.h> +#include <linux/isa.h> +#include <linux/pnp.h> #include <linux/interrupt.h> +#define MAX_CARDS 8 + +/* old-style parameters for compatibility */ static int ncr_irq; -static int ncr_dma; static int ncr_addr; static int ncr_5380; static int ncr_53c400; static int ncr_53c400a; static int dtc_3181e; static int hp_c2502; +module_param(ncr_irq, int, 0); +module_param(ncr_addr, int, 0); +module_param(ncr_5380, int, 0); +module_param(ncr_53c400, int, 0); +module_param(ncr_53c400a, int, 0); +module_param(dtc_3181e, int, 0); +module_param(hp_c2502, int, 0); + +static int irq[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; +module_param_array(irq, int, NULL, 0); +MODULE_PARM_DESC(irq, "IRQ number(s)"); -static struct card { - NCR5380_map_type NCR5380_map_name; - int irq; - int dma; - int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ -} card; +static int base[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; +module_param_array(base, int, NULL, 0); +MODULE_PARM_DESC(base, "base address(es)"); + +static int card[] = { -1, -1, -1, -1, -1, -1, -1, -1 }; +module_param_array(card, int, NULL, 0); +MODULE_PARM_DESC(card, "card type (0=NCR5380, 1=NCR53C400, 2=NCR53C400A, 3=DTC3181E, 4=HP C2502)"); + +MODULE_LICENSE("GPL"); #ifndef SCSI_G_NCR5380_MEM /* @@ -73,17 +90,8 @@ static void magic_configure(int idx, u8 irq, u8 magic[]) } #endif -/** - * generic_NCR5380_detect - look for NCR5380 controllers - * @tpnt: the scsi template - * - * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E - * and DTC436(ISAPnP) controllers. - * - * Locks: none - */ - -static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) +static int generic_NCR5380_init_one(struct scsi_host_template *tpnt, + struct device *pdev, int base, int irq, int board) { unsigned int *ports; u8 *magic = NULL; @@ -92,80 +100,29 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) int port_idx = -1; unsigned long region_size; #endif - static unsigned int __initdata ncr_53c400a_ports[] = { + static unsigned int ncr_53c400a_ports[] = { 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 }; - static unsigned int __initdata dtc_3181e_ports[] = { + static unsigned int dtc_3181e_ports[] = { 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 }; - static u8 ncr_53c400a_magic[] __initdata = { /* 53C400A & DTC436 */ + static u8 ncr_53c400a_magic[] = { /* 53C400A & DTC436 */ 0x59, 0xb9, 0xc5, 0xae, 0xa6 }; - static u8 hp_c2502_magic[] __initdata = { /* HP C2502 */ + static u8 hp_c2502_magic[] = { /* HP C2502 */ 0x0f, 0x22, 0xf0, 0x20, 0x80 }; - int flags; + int flags, ret; struct Scsi_Host *instance; struct NCR5380_hostdata *hostdata; #ifdef SCSI_G_NCR5380_MEM - unsigned long base; void __iomem *iomem; resource_size_t iomem_size; #endif - if (ncr_irq) - card.irq = ncr_irq; - if (ncr_dma) - card.dma = ncr_dma; - if (ncr_addr) - card.NCR5380_map_name = (NCR5380_map_type) ncr_addr; - if (ncr_5380) - card.board = BOARD_NCR5380; - else if (ncr_53c400) - card.board = BOARD_NCR53C400; - else if (ncr_53c400a) - card.board = BOARD_NCR53C400A; - else if (dtc_3181e) - card.board = BOARD_DTC3181E; - else if (hp_c2502) - card.board = BOARD_HP_C2502; -#ifndef SCSI_G_NCR5380_MEM - if (isapnp_present()) { - struct pnp_dev *dev = NULL; - while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { - if (pnp_device_attach(dev) < 0) - continue; - if (pnp_activate_dev(dev) < 0) { - printk(KERN_ERR "dtc436e probe: activate failed\n"); - pnp_device_detach(dev); - continue; - } - if (!pnp_port_valid(dev, 0)) { - printk(KERN_ERR "dtc436e probe: no valid port\n"); - pnp_device_detach(dev); - continue; - } - if (pnp_irq_valid(dev, 0)) - card.irq = pnp_irq(dev, 0); - else - card.irq = NO_IRQ; - if (pnp_dma_valid(dev, 0)) - card.dma = pnp_dma(dev, 0); - else - card.dma = DMA_NONE; - card.NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); - card.board = BOARD_DTC3181E; - break; - } - } -#endif - - if (!(card.NCR5380_map_name)) - return 0; - ports = NULL; flags = 0; - switch (card.board) { + switch (board) { case BOARD_NCR5380: flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP; break; @@ -191,17 +148,20 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) magic_configure(-1, 0, magic); region_size = 16; - - if (card.NCR5380_map_name != PORT_AUTO) + if (base) for (i = 0; ports[i]; i++) { - if (!request_region(ports[i], region_size, "ncr53c80")) - continue; - if (card.NCR5380_map_name == ports[i]) + if (base == ports[i]) { /* index found */ + if (!request_region(ports[i], + region_size, + "ncr53c80")) + return -EBUSY; break; - release_region(ports[i], region_size); - } else + } + } + else for (i = 0; ports[i]; i++) { - if (!request_region(ports[i], region_size, "ncr53c80")) + if (!request_region(ports[i], region_size, + "ncr53c80")) continue; if (inb(ports[i]) == 0xff) break; @@ -211,39 +171,41 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) /* At this point we have our region reserved */ magic_configure(i, 0, magic); /* no IRQ yet */ outb(0xc0, ports[i] + 9); - if (inb(ports[i] + 9) != 0x80) - return 0; - card.NCR5380_map_name = ports[i]; + if (inb(ports[i] + 9) != 0x80) { + ret = -ENODEV; + goto out_release; + } + base = ports[i]; port_idx = i; } else - return 0; + return -EINVAL; } else { - /* Not a 53C400A style setup - just grab */ + /* NCR5380 - no configuration, just grab */ region_size = 8; - if (!request_region(card.NCR5380_map_name, - region_size, "ncr5380")) - return 0; + if (!base || !request_region(base, region_size, "ncr5380")) + return -EBUSY; } #else - base = card.NCR5380_map_name; iomem_size = NCR53C400_region_size; if (!request_mem_region(base, iomem_size, "ncr5380")) - return 0; + return -EBUSY; iomem = ioremap(base, iomem_size); if (!iomem) { release_mem_region(base, iomem_size); - return 0; + return -ENOMEM; } #endif - instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); - if (instance == NULL) + instance = scsi_host_alloc(tpnt, sizeof(struct NCR5380_hostdata)); + if (instance == NULL) { + ret = -ENOMEM; goto out_release; + } hostdata = shost_priv(instance); #ifndef SCSI_G_NCR5380_MEM - instance->io_port = card.NCR5380_map_name; + instance->io_port = base; instance->n_io_port = region_size; hostdata->io_width = 1; /* 8-bit PDMA by default */ @@ -251,7 +213,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) * On NCR53C400 boards, NCR5380 registers are mapped 8 past * the base address. */ - switch (card.board) { + switch (board) { case BOARD_NCR53C400: instance->io_port += 8; hostdata->c400_ctl_status = 0; @@ -269,10 +231,10 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) break; } #else - instance->base = card.NCR5380_map_name; + instance->base = base; hostdata->iomem = iomem; hostdata->iomem_size = iomem_size; - switch (card.board) { + switch (board) { case BOARD_NCR53C400: hostdata->c400_ctl_status = 0x100; hostdata->c400_blk_cnt = 0x101; @@ -282,14 +244,16 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) case BOARD_NCR53C400A: case BOARD_HP_C2502: pr_err(DRV_MODULE_NAME ": unknown register offsets\n"); + ret = -EINVAL; goto out_unregister; } #endif - if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP)) + ret = NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP); + if (ret) goto out_unregister; - switch (card.board) { + switch (board) { case BOARD_NCR53C400: case BOARD_DTC3181E: case BOARD_NCR53C400A: @@ -299,8 +263,8 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) NCR5380_maybe_reset_bus(instance); - if (card.irq != IRQ_AUTO) - instance->irq = card.irq; + if (irq != IRQ_AUTO) + instance->irq = irq; else instance->irq = NCR5380_probe_irq(instance, 0xffff); @@ -311,7 +275,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) if (instance->irq != NO_IRQ) { #ifndef SCSI_G_NCR5380_MEM /* set IRQ for HP C2502 */ - if (card.board == BOARD_HP_C2502) + if (board == BOARD_HP_C2502) magic_configure(port_idx, instance->irq, magic); #endif if (request_irq(instance->irq, generic_NCR5380_intr, @@ -326,31 +290,32 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); } - return 1; + ret = scsi_add_host(instance, pdev); + if (ret) + goto out_free_irq; + scsi_scan_host(instance); + dev_set_drvdata(pdev, instance); + return 0; +out_free_irq: + if (instance->irq != NO_IRQ) + free_irq(instance->irq, instance); + NCR5380_exit(instance); out_unregister: - scsi_unregister(instance); + scsi_host_put(instance); out_release: #ifndef SCSI_G_NCR5380_MEM - release_region(card.NCR5380_map_name, region_size); + release_region(base, region_size); #else iounmap(iomem); release_mem_region(base, iomem_size); #endif - return 0; + return ret; } -/** - * generic_NCR5380_release_resources - free resources - * @instance: host adapter to clean up - * - * Free the generic interface resources from this adapter. - * - * Locks: none - */ - -static int generic_NCR5380_release_resources(struct Scsi_Host *instance) +static void generic_NCR5380_release_resources(struct Scsi_Host *instance) { + scsi_remove_host(instance); if (instance->irq != NO_IRQ) free_irq(instance->irq, instance); NCR5380_exit(instance); @@ -364,7 +329,7 @@ static int generic_NCR5380_release_resources(struct Scsi_Host *instance) release_mem_region(instance->base, hostdata->iomem_size); } #endif - return 0; + scsi_host_put(instance); } /** @@ -554,10 +519,9 @@ static int generic_NCR5380_dma_xfer_len(struct Scsi_Host *instance, #include "NCR5380.c" static struct scsi_host_template driver_template = { + .module = THIS_MODULE, .proc_name = DRV_MODULE_NAME, .name = "Generic NCR5380/NCR53C400 SCSI", - .detect = generic_NCR5380_detect, - .release = generic_NCR5380_release_resources, .info = generic_NCR5380_info, .queuecommand = generic_NCR5380_queue_command, .eh_abort_handler = generic_NCR5380_abort, @@ -571,26 +535,115 @@ static struct scsi_host_template driver_template = { .max_sectors = 128, }; -#include "scsi_module.c" -module_param(ncr_irq, int, 0); -module_param(ncr_dma, int, 0); -module_param(ncr_addr, int, 0); -module_param(ncr_5380, int, 0); -module_param(ncr_53c400, int, 0); -module_param(ncr_53c400a, int, 0); -module_param(dtc_3181e, int, 0); -module_param(hp_c2502, int, 0); -MODULE_LICENSE("GPL"); +static int generic_NCR5380_isa_match(struct device *pdev, unsigned int ndev) +{ + int ret = generic_NCR5380_init_one(&driver_template, pdev, base[ndev], + irq[ndev], card[ndev]); + if (ret) { + if (base[ndev]) + printk(KERN_WARNING "Card not found at address 0x%03x\n", + base[ndev]); + return 0; + } -#if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE) -static struct isapnp_device_id id_table[] = { - { - ISAPNP_ANY_ID, ISAPNP_ANY_ID, - ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), - 0}, - {0} + return 1; +} + +static int generic_NCR5380_isa_remove(struct device *pdev, + unsigned int ndev) +{ + generic_NCR5380_release_resources(dev_get_drvdata(pdev)); + dev_set_drvdata(pdev, NULL); + return 0; +} + +static struct isa_driver generic_NCR5380_isa_driver = { + .match = generic_NCR5380_isa_match, + .remove = generic_NCR5380_isa_remove, + .driver = { + .name = DRV_MODULE_NAME + }, +}; + +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) +static struct pnp_device_id generic_NCR5380_pnp_ids[] = { + { .id = "DTC436e", .driver_data = BOARD_DTC3181E }, + { .id = "" } +}; +MODULE_DEVICE_TABLE(pnp, generic_NCR5380_pnp_ids); + +static int generic_NCR5380_pnp_probe(struct pnp_dev *pdev, + const struct pnp_device_id *id) +{ + int base, irq; + + if (pnp_activate_dev(pdev) < 0) + return -EBUSY; + + base = pnp_port_start(pdev, 0); + irq = pnp_irq(pdev, 0); + + return generic_NCR5380_init_one(&driver_template, &pdev->dev, base, irq, + id->driver_data); +} + +static void generic_NCR5380_pnp_remove(struct pnp_dev *pdev) +{ + generic_NCR5380_release_resources(pnp_get_drvdata(pdev)); + pnp_set_drvdata(pdev, NULL); +} + +static struct pnp_driver generic_NCR5380_pnp_driver = { + .name = DRV_MODULE_NAME, + .id_table = generic_NCR5380_pnp_ids, + .probe = generic_NCR5380_pnp_probe, + .remove = generic_NCR5380_pnp_remove, }; +#endif /* !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) */ -MODULE_DEVICE_TABLE(isapnp, id_table); +static int pnp_registered, isa_registered; + +static int __init generic_NCR5380_init(void) +{ + int ret = 0; + + /* compatibility with old-style parameters */ + if (irq[0] == 0 && base[0] == 0 && card[0] == -1) { + irq[0] = ncr_irq; + base[0] = ncr_addr; + if (ncr_5380) + card[0] = BOARD_NCR5380; + if (ncr_53c400) + card[0] = BOARD_NCR53C400; + if (ncr_53c400a) + card[0] = BOARD_NCR53C400A; + if (dtc_3181e) + card[0] = BOARD_DTC3181E; + if (hp_c2502) + card[0] = BOARD_HP_C2502; + } + +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) + if (!pnp_register_driver(&generic_NCR5380_pnp_driver)) + pnp_registered = 1; #endif + ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS); + if (!ret) + isa_registered = 1; + + return (pnp_registered || isa_registered) ? 0 : ret; +} + +static void __exit generic_NCR5380_exit(void) +{ +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) + if (pnp_registered) + pnp_unregister_driver(&generic_NCR5380_pnp_driver); +#endif + if (isa_registered) + isa_unregister_driver(&generic_NCR5380_isa_driver); +} + +module_init(generic_NCR5380_init); +module_exit(generic_NCR5380_exit); diff --git a/drivers/scsi/g_NCR5380.h b/drivers/scsi/g_NCR5380.h index 5951774..b175b92 100644 --- a/drivers/scsi/g_NCR5380.h +++ b/drivers/scsi/g_NCR5380.h @@ -14,15 +14,9 @@ #ifndef GENERIC_NCR5380_H #define GENERIC_NCR5380_H -#define __STRVAL(x) #x -#define STRVAL(x) __STRVAL(x) - #ifndef SCSI_G_NCR5380_MEM #define DRV_MODULE_NAME "g_NCR5380" -#define NCR5380_map_type int -#define NCR5380_map_name port - #define NCR5380_read(reg) \ inb(instance->io_port + (reg)) #define NCR5380_write(reg, value) \ @@ -38,8 +32,6 @@ /* therefore SCSI_G_NCR5380_MEM */ #define DRV_MODULE_NAME "g_NCR5380_mmio" -#define NCR5380_map_type unsigned long -#define NCR5380_map_name base #define NCR53C400_mem_base 0x3880 #define NCR53C400_host_buffer 0x3900 #define NCR53C400_region_size 0x3a00 -- Ondrej Zary ^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c 2016-09-27 19:00 ` [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary @ 2016-09-28 22:57 ` Finn Thain 0 siblings, 0 replies; 13+ messages in thread From: Finn Thain @ 2016-09-28 22:57 UTC (permalink / raw) To: Ondrej Zary; +Cc: Christoph Hellwig, linux-scsi, linux-kernel Acked-by: Finn Thain <fthain@telegraphics.com.au> On Tue, 27 Sep 2016, Ondrej Zary wrote: > Convert g_NCR5380 to use scsi_add_host instead of scsi_module.c > Use pnp_driver and isa_driver to manage cards. > > In order to support multiple cards, new module parameter format is > introduced. The old parameters are kept for compatibility. > > Signed-off-by: Ondrej Zary <linux@rainbow-software.org> > --- > Documentation/scsi/g_NCR5380.txt | 24 ++- > drivers/scsi/g_NCR5380.c | 335 ++++++++++++++++++++++---------------- > drivers/scsi/g_NCR5380.h | 8 - > 3 files changed, 215 insertions(+), 152 deletions(-) > > diff --git a/Documentation/scsi/g_NCR5380.txt b/Documentation/scsi/g_NCR5380.txt > index 843cbae..e2c1879 100644 > --- a/Documentation/scsi/g_NCR5380.txt > +++ b/Documentation/scsi/g_NCR5380.txt > @@ -28,6 +28,16 @@ time. More info to come in the future. > This driver works as a module. > When included as a module, parameters can be passed on the insmod/modprobe > command line: > + irq=xx[,...] the interrupt(s) > + base=xx[,...] the port or base address(es) (for port or memory mapped, resp.) > + card=xx[,...] card type(s): > + 0 = NCR5380, > + 1 = NCR53C400, > + 2 = NCR53C400A, > + 3 = Domex Technology Corp 3181E (DTC3181E) > + 4 = Hewlett Packard C2502 > + > +These old-style parameters can support only one card: > ncr_irq=xx the interrupt > ncr_addr=xx the port or base address (for port or memory > mapped, resp.) > @@ -36,11 +46,19 @@ command line: > ncr_53c400a=1 to set up for a NCR53C400A board > dtc_3181e=1 to set up for a Domex Technology Corp 3181E board > hp_c2502=1 to set up for a Hewlett Packard C2502 board > + > e.g. > -modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 > +OLD: modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 > +NEW: modprobe g_NCR5380 irq=5 base=0x350 card=0 > for a port mapped NCR5380 board or > -modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 > - for a memory mapped NCR53C400 board with interrupts disabled. > + > +OLD: modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 > +NEW: modprobe g_NCR5380 irq=255 base=0xc8000 card=1 > + for a memory mapped NCR53C400 board with interrupts disabled or > + > +NEW: modprobe g_NCR5380 irq=0,7 base=0x240,0x300 card=3,4 > + for two cards: DTC3181 (in non-PnP mode) at 0x240 with no IRQ > + and HP C2502 at 0x300 with IRQ 7 > > (255 should be specified for no or DMA interrupt, 254 to autoprobe for an > IRQ line if overridden on the command line.) > diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c > index 5162de6..cbf0103 100644 > --- a/drivers/scsi/g_NCR5380.c > +++ b/drivers/scsi/g_NCR5380.c > @@ -30,24 +30,41 @@ > #include "NCR5380.h" > #include <linux/init.h> > #include <linux/ioport.h> > -#include <linux/isapnp.h> > +#include <linux/isa.h> > +#include <linux/pnp.h> > #include <linux/interrupt.h> > > +#define MAX_CARDS 8 > + > +/* old-style parameters for compatibility */ > static int ncr_irq; > -static int ncr_dma; > static int ncr_addr; > static int ncr_5380; > static int ncr_53c400; > static int ncr_53c400a; > static int dtc_3181e; > static int hp_c2502; > +module_param(ncr_irq, int, 0); > +module_param(ncr_addr, int, 0); > +module_param(ncr_5380, int, 0); > +module_param(ncr_53c400, int, 0); > +module_param(ncr_53c400a, int, 0); > +module_param(dtc_3181e, int, 0); > +module_param(hp_c2502, int, 0); > + > +static int irq[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; > +module_param_array(irq, int, NULL, 0); > +MODULE_PARM_DESC(irq, "IRQ number(s)"); > > -static struct card { > - NCR5380_map_type NCR5380_map_name; > - int irq; > - int dma; > - int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ > -} card; > +static int base[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; > +module_param_array(base, int, NULL, 0); > +MODULE_PARM_DESC(base, "base address(es)"); > + > +static int card[] = { -1, -1, -1, -1, -1, -1, -1, -1 }; > +module_param_array(card, int, NULL, 0); > +MODULE_PARM_DESC(card, "card type (0=NCR5380, 1=NCR53C400, 2=NCR53C400A, 3=DTC3181E, 4=HP C2502)"); > + > +MODULE_LICENSE("GPL"); > > #ifndef SCSI_G_NCR5380_MEM > /* > @@ -73,17 +90,8 @@ static void magic_configure(int idx, u8 irq, u8 magic[]) > } > #endif > > -/** > - * generic_NCR5380_detect - look for NCR5380 controllers > - * @tpnt: the scsi template > - * > - * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E > - * and DTC436(ISAPnP) controllers. > - * > - * Locks: none > - */ > - > -static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > +static int generic_NCR5380_init_one(struct scsi_host_template *tpnt, > + struct device *pdev, int base, int irq, int board) > { > unsigned int *ports; > u8 *magic = NULL; > @@ -92,80 +100,29 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > int port_idx = -1; > unsigned long region_size; > #endif > - static unsigned int __initdata ncr_53c400a_ports[] = { > + static unsigned int ncr_53c400a_ports[] = { > 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 > }; > - static unsigned int __initdata dtc_3181e_ports[] = { > + static unsigned int dtc_3181e_ports[] = { > 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 > }; > - static u8 ncr_53c400a_magic[] __initdata = { /* 53C400A & DTC436 */ > + static u8 ncr_53c400a_magic[] = { /* 53C400A & DTC436 */ > 0x59, 0xb9, 0xc5, 0xae, 0xa6 > }; > - static u8 hp_c2502_magic[] __initdata = { /* HP C2502 */ > + static u8 hp_c2502_magic[] = { /* HP C2502 */ > 0x0f, 0x22, 0xf0, 0x20, 0x80 > }; > - int flags; > + int flags, ret; > struct Scsi_Host *instance; > struct NCR5380_hostdata *hostdata; > #ifdef SCSI_G_NCR5380_MEM > - unsigned long base; > void __iomem *iomem; > resource_size_t iomem_size; > #endif > > - if (ncr_irq) > - card.irq = ncr_irq; > - if (ncr_dma) > - card.dma = ncr_dma; > - if (ncr_addr) > - card.NCR5380_map_name = (NCR5380_map_type) ncr_addr; > - if (ncr_5380) > - card.board = BOARD_NCR5380; > - else if (ncr_53c400) > - card.board = BOARD_NCR53C400; > - else if (ncr_53c400a) > - card.board = BOARD_NCR53C400A; > - else if (dtc_3181e) > - card.board = BOARD_DTC3181E; > - else if (hp_c2502) > - card.board = BOARD_HP_C2502; > -#ifndef SCSI_G_NCR5380_MEM > - if (isapnp_present()) { > - struct pnp_dev *dev = NULL; > - while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { > - if (pnp_device_attach(dev) < 0) > - continue; > - if (pnp_activate_dev(dev) < 0) { > - printk(KERN_ERR "dtc436e probe: activate failed\n"); > - pnp_device_detach(dev); > - continue; > - } > - if (!pnp_port_valid(dev, 0)) { > - printk(KERN_ERR "dtc436e probe: no valid port\n"); > - pnp_device_detach(dev); > - continue; > - } > - if (pnp_irq_valid(dev, 0)) > - card.irq = pnp_irq(dev, 0); > - else > - card.irq = NO_IRQ; > - if (pnp_dma_valid(dev, 0)) > - card.dma = pnp_dma(dev, 0); > - else > - card.dma = DMA_NONE; > - card.NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); > - card.board = BOARD_DTC3181E; > - break; > - } > - } > -#endif > - > - if (!(card.NCR5380_map_name)) > - return 0; > - > ports = NULL; > flags = 0; > - switch (card.board) { > + switch (board) { > case BOARD_NCR5380: > flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP; > break; > @@ -191,17 +148,20 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > magic_configure(-1, 0, magic); > > region_size = 16; > - > - if (card.NCR5380_map_name != PORT_AUTO) > + if (base) > for (i = 0; ports[i]; i++) { > - if (!request_region(ports[i], region_size, "ncr53c80")) > - continue; > - if (card.NCR5380_map_name == ports[i]) > + if (base == ports[i]) { /* index found */ > + if (!request_region(ports[i], > + region_size, > + "ncr53c80")) > + return -EBUSY; > break; > - release_region(ports[i], region_size); > - } else > + } > + } > + else > for (i = 0; ports[i]; i++) { > - if (!request_region(ports[i], region_size, "ncr53c80")) > + if (!request_region(ports[i], region_size, > + "ncr53c80")) > continue; > if (inb(ports[i]) == 0xff) > break; > @@ -211,39 +171,41 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > /* At this point we have our region reserved */ > magic_configure(i, 0, magic); /* no IRQ yet */ > outb(0xc0, ports[i] + 9); > - if (inb(ports[i] + 9) != 0x80) > - return 0; > - card.NCR5380_map_name = ports[i]; > + if (inb(ports[i] + 9) != 0x80) { > + ret = -ENODEV; > + goto out_release; > + } > + base = ports[i]; > port_idx = i; > } else > - return 0; > + return -EINVAL; > } > else > { > - /* Not a 53C400A style setup - just grab */ > + /* NCR5380 - no configuration, just grab */ > region_size = 8; > - if (!request_region(card.NCR5380_map_name, > - region_size, "ncr5380")) > - return 0; > + if (!base || !request_region(base, region_size, "ncr5380")) > + return -EBUSY; > } > #else > - base = card.NCR5380_map_name; > iomem_size = NCR53C400_region_size; > if (!request_mem_region(base, iomem_size, "ncr5380")) > - return 0; > + return -EBUSY; > iomem = ioremap(base, iomem_size); > if (!iomem) { > release_mem_region(base, iomem_size); > - return 0; > + return -ENOMEM; > } > #endif > - instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); > - if (instance == NULL) > + instance = scsi_host_alloc(tpnt, sizeof(struct NCR5380_hostdata)); > + if (instance == NULL) { > + ret = -ENOMEM; > goto out_release; > + } > hostdata = shost_priv(instance); > > #ifndef SCSI_G_NCR5380_MEM > - instance->io_port = card.NCR5380_map_name; > + instance->io_port = base; > instance->n_io_port = region_size; > hostdata->io_width = 1; /* 8-bit PDMA by default */ > > @@ -251,7 +213,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > * On NCR53C400 boards, NCR5380 registers are mapped 8 past > * the base address. > */ > - switch (card.board) { > + switch (board) { > case BOARD_NCR53C400: > instance->io_port += 8; > hostdata->c400_ctl_status = 0; > @@ -269,10 +231,10 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > break; > } > #else > - instance->base = card.NCR5380_map_name; > + instance->base = base; > hostdata->iomem = iomem; > hostdata->iomem_size = iomem_size; > - switch (card.board) { > + switch (board) { > case BOARD_NCR53C400: > hostdata->c400_ctl_status = 0x100; > hostdata->c400_blk_cnt = 0x101; > @@ -282,14 +244,16 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > case BOARD_NCR53C400A: > case BOARD_HP_C2502: > pr_err(DRV_MODULE_NAME ": unknown register offsets\n"); > + ret = -EINVAL; > goto out_unregister; > } > #endif > > - if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP)) > + ret = NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP); > + if (ret) > goto out_unregister; > > - switch (card.board) { > + switch (board) { > case BOARD_NCR53C400: > case BOARD_DTC3181E: > case BOARD_NCR53C400A: > @@ -299,8 +263,8 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > > NCR5380_maybe_reset_bus(instance); > > - if (card.irq != IRQ_AUTO) > - instance->irq = card.irq; > + if (irq != IRQ_AUTO) > + instance->irq = irq; > else > instance->irq = NCR5380_probe_irq(instance, 0xffff); > > @@ -311,7 +275,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > if (instance->irq != NO_IRQ) { > #ifndef SCSI_G_NCR5380_MEM > /* set IRQ for HP C2502 */ > - if (card.board == BOARD_HP_C2502) > + if (board == BOARD_HP_C2502) > magic_configure(port_idx, instance->irq, magic); > #endif > if (request_irq(instance->irq, generic_NCR5380_intr, > @@ -326,31 +290,32 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); > } > > - return 1; > + ret = scsi_add_host(instance, pdev); > + if (ret) > + goto out_free_irq; > + scsi_scan_host(instance); > + dev_set_drvdata(pdev, instance); > + return 0; > > +out_free_irq: > + if (instance->irq != NO_IRQ) > + free_irq(instance->irq, instance); > + NCR5380_exit(instance); > out_unregister: > - scsi_unregister(instance); > + scsi_host_put(instance); > out_release: > #ifndef SCSI_G_NCR5380_MEM > - release_region(card.NCR5380_map_name, region_size); > + release_region(base, region_size); > #else > iounmap(iomem); > release_mem_region(base, iomem_size); > #endif > - return 0; > + return ret; > } > > -/** > - * generic_NCR5380_release_resources - free resources > - * @instance: host adapter to clean up > - * > - * Free the generic interface resources from this adapter. > - * > - * Locks: none > - */ > - > -static int generic_NCR5380_release_resources(struct Scsi_Host *instance) > +static void generic_NCR5380_release_resources(struct Scsi_Host *instance) > { > + scsi_remove_host(instance); > if (instance->irq != NO_IRQ) > free_irq(instance->irq, instance); > NCR5380_exit(instance); > @@ -364,7 +329,7 @@ static int generic_NCR5380_release_resources(struct Scsi_Host *instance) > release_mem_region(instance->base, hostdata->iomem_size); > } > #endif > - return 0; > + scsi_host_put(instance); > } > > /** > @@ -554,10 +519,9 @@ static int generic_NCR5380_dma_xfer_len(struct Scsi_Host *instance, > #include "NCR5380.c" > > static struct scsi_host_template driver_template = { > + .module = THIS_MODULE, > .proc_name = DRV_MODULE_NAME, > .name = "Generic NCR5380/NCR53C400 SCSI", > - .detect = generic_NCR5380_detect, > - .release = generic_NCR5380_release_resources, > .info = generic_NCR5380_info, > .queuecommand = generic_NCR5380_queue_command, > .eh_abort_handler = generic_NCR5380_abort, > @@ -571,26 +535,115 @@ static struct scsi_host_template driver_template = { > .max_sectors = 128, > }; > > -#include "scsi_module.c" > > -module_param(ncr_irq, int, 0); > -module_param(ncr_dma, int, 0); > -module_param(ncr_addr, int, 0); > -module_param(ncr_5380, int, 0); > -module_param(ncr_53c400, int, 0); > -module_param(ncr_53c400a, int, 0); > -module_param(dtc_3181e, int, 0); > -module_param(hp_c2502, int, 0); > -MODULE_LICENSE("GPL"); > +static int generic_NCR5380_isa_match(struct device *pdev, unsigned int ndev) > +{ > + int ret = generic_NCR5380_init_one(&driver_template, pdev, base[ndev], > + irq[ndev], card[ndev]); > + if (ret) { > + if (base[ndev]) > + printk(KERN_WARNING "Card not found at address 0x%03x\n", > + base[ndev]); > + return 0; > + } > > -#if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE) > -static struct isapnp_device_id id_table[] = { > - { > - ISAPNP_ANY_ID, ISAPNP_ANY_ID, > - ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), > - 0}, > - {0} > + return 1; > +} > + > +static int generic_NCR5380_isa_remove(struct device *pdev, > + unsigned int ndev) > +{ > + generic_NCR5380_release_resources(dev_get_drvdata(pdev)); > + dev_set_drvdata(pdev, NULL); > + return 0; > +} > + > +static struct isa_driver generic_NCR5380_isa_driver = { > + .match = generic_NCR5380_isa_match, > + .remove = generic_NCR5380_isa_remove, > + .driver = { > + .name = DRV_MODULE_NAME > + }, > +}; > + > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > +static struct pnp_device_id generic_NCR5380_pnp_ids[] = { > + { .id = "DTC436e", .driver_data = BOARD_DTC3181E }, > + { .id = "" } > +}; > +MODULE_DEVICE_TABLE(pnp, generic_NCR5380_pnp_ids); > + > +static int generic_NCR5380_pnp_probe(struct pnp_dev *pdev, > + const struct pnp_device_id *id) > +{ > + int base, irq; > + > + if (pnp_activate_dev(pdev) < 0) > + return -EBUSY; > + > + base = pnp_port_start(pdev, 0); > + irq = pnp_irq(pdev, 0); > + > + return generic_NCR5380_init_one(&driver_template, &pdev->dev, base, irq, > + id->driver_data); > +} > + > +static void generic_NCR5380_pnp_remove(struct pnp_dev *pdev) > +{ > + generic_NCR5380_release_resources(pnp_get_drvdata(pdev)); > + pnp_set_drvdata(pdev, NULL); > +} > + > +static struct pnp_driver generic_NCR5380_pnp_driver = { > + .name = DRV_MODULE_NAME, > + .id_table = generic_NCR5380_pnp_ids, > + .probe = generic_NCR5380_pnp_probe, > + .remove = generic_NCR5380_pnp_remove, > }; > +#endif /* !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) */ > > -MODULE_DEVICE_TABLE(isapnp, id_table); > +static int pnp_registered, isa_registered; > + > +static int __init generic_NCR5380_init(void) > +{ > + int ret = 0; > + > + /* compatibility with old-style parameters */ > + if (irq[0] == 0 && base[0] == 0 && card[0] == -1) { > + irq[0] = ncr_irq; > + base[0] = ncr_addr; > + if (ncr_5380) > + card[0] = BOARD_NCR5380; > + if (ncr_53c400) > + card[0] = BOARD_NCR53C400; > + if (ncr_53c400a) > + card[0] = BOARD_NCR53C400A; > + if (dtc_3181e) > + card[0] = BOARD_DTC3181E; > + if (hp_c2502) > + card[0] = BOARD_HP_C2502; > + } > + > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > + if (!pnp_register_driver(&generic_NCR5380_pnp_driver)) > + pnp_registered = 1; > #endif > + ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS); > + if (!ret) > + isa_registered = 1; > + > + return (pnp_registered || isa_registered) ? 0 : ret; > +} > + > +static void __exit generic_NCR5380_exit(void) > +{ > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > + if (pnp_registered) > + pnp_unregister_driver(&generic_NCR5380_pnp_driver); > +#endif > + if (isa_registered) > + isa_unregister_driver(&generic_NCR5380_isa_driver); > +} > + > +module_init(generic_NCR5380_init); > +module_exit(generic_NCR5380_exit); > diff --git a/drivers/scsi/g_NCR5380.h b/drivers/scsi/g_NCR5380.h > index 5951774..b175b92 100644 > --- a/drivers/scsi/g_NCR5380.h > +++ b/drivers/scsi/g_NCR5380.h > @@ -14,15 +14,9 @@ > #ifndef GENERIC_NCR5380_H > #define GENERIC_NCR5380_H > > -#define __STRVAL(x) #x > -#define STRVAL(x) __STRVAL(x) > - > #ifndef SCSI_G_NCR5380_MEM > #define DRV_MODULE_NAME "g_NCR5380" > > -#define NCR5380_map_type int > -#define NCR5380_map_name port > - > #define NCR5380_read(reg) \ > inb(instance->io_port + (reg)) > #define NCR5380_write(reg, value) \ > @@ -38,8 +32,6 @@ > /* therefore SCSI_G_NCR5380_MEM */ > #define DRV_MODULE_NAME "g_NCR5380_mmio" > > -#define NCR5380_map_type unsigned long > -#define NCR5380_map_name base > #define NCR53C400_mem_base 0x3880 > #define NCR53C400_host_buffer 0x3900 > #define NCR53C400_region_size 0x3a00 > ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v2 0/3] g_NCR5380: Modernization 2016-09-27 19:00 [PATCH v2 0/3] g_NCR5380: Modernization Ondrej Zary ` (2 preceding siblings ...) 2016-09-27 19:00 ` [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary @ 2016-09-30 1:53 ` Martin K. Petersen 3 siblings, 0 replies; 13+ messages in thread From: Martin K. Petersen @ 2016-09-30 1:53 UTC (permalink / raw) To: Ondrej Zary; +Cc: Christoph Hellwig, Finn Thain, linux-scsi, linux-kernel >>>>> "Ondrej" == Ondrej Zary <linux@rainbow-software.org> writes: Ondrej> This small patch series removes deprecated code from g_NCR5380 Ondrej> driver and converts it from scsi_module.c to scsi_add_host(). Applied to 4.9/scsi-queue. -- Martin K. Petersen Oracle Linux Engineering ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH 0/3] g_NCR5380: Modernization @ 2016-09-24 18:59 Ondrej Zary 2016-09-24 18:59 ` [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary 0 siblings, 1 reply; 13+ messages in thread From: Ondrej Zary @ 2016-09-24 18:59 UTC (permalink / raw) To: Christoph Hellwig; +Cc: Finn Thain, linux-scsi, linux-kernel This small patch series removes deprecated code from g_NCR5380 driver and converts it from scsi_module.c to scsi_add_host(). Tested with: HP C2502 (53C400A chip) Canon FG2-5202 (53C400 chip, memory-mapped) DTC-3181L (DTCT-436P chip, PnP) P.S. I don't like the ifdef mess needed for g_NCR5380_mmio. Should I try to merge the code so g_NCR5380 will support both PIO and MMIO cards (and g_NCR5380_mmio could be removed)? -- Ondrej Zary ^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH 3/3] g_NCR5380: Stop using scsi_module.c 2016-09-24 18:59 [PATCH " Ondrej Zary @ 2016-09-24 18:59 ` Ondrej Zary 2016-09-25 23:50 ` Christoph Hellwig 2016-09-26 3:29 ` Finn Thain 0 siblings, 2 replies; 13+ messages in thread From: Ondrej Zary @ 2016-09-24 18:59 UTC (permalink / raw) To: Christoph Hellwig; +Cc: Finn Thain, linux-scsi, linux-kernel Convert g_NCR5380 to use scsi_add_host instead of scsi_module.c Use pnp_driver and isa_driver to manage cards. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> --- drivers/scsi/g_NCR5380.c | 310 +++++++++++++++++++++++++--------------------- drivers/scsi/g_NCR5380.h | 8 -- 2 files changed, 169 insertions(+), 149 deletions(-) diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c index 5162de6..6cf6b00 100644 --- a/drivers/scsi/g_NCR5380.c +++ b/drivers/scsi/g_NCR5380.c @@ -30,24 +30,25 @@ #include "NCR5380.h" #include <linux/init.h> #include <linux/ioport.h> -#include <linux/isapnp.h> +#include <linux/isa.h> +#include <linux/pnp.h> #include <linux/interrupt.h> -static int ncr_irq; -static int ncr_dma; -static int ncr_addr; -static int ncr_5380; -static int ncr_53c400; -static int ncr_53c400a; -static int dtc_3181e; -static int hp_c2502; - -static struct card { - NCR5380_map_type NCR5380_map_name; - int irq; - int dma; - int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ -} card; +#define MAX_CARDS 8 + +static int irq[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; +module_param_array(irq, int, NULL, 0); +MODULE_PARM_DESC(irq, "IRQ number(s)"); + +static int base[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; +module_param_array(base, int, NULL, 0); +MODULE_PARM_DESC(base, "base address(es)"); + +static int card[] = { -1, -1, -1, -1, -1, -1, -1, -1 }; +module_param_array(card, int, NULL, 0); +MODULE_PARM_DESC(card, "card type (0=NCR5380, 1=NCR53C400, 2=NCR53C400A, 3=DTC3181E, 4=HP C2502)"); + +MODULE_LICENSE("GPL"); #ifndef SCSI_G_NCR5380_MEM /* @@ -73,17 +74,9 @@ static void magic_configure(int idx, u8 irq, u8 magic[]) } #endif -/** - * generic_NCR5380_detect - look for NCR5380 controllers - * @tpnt: the scsi template - * - * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E - * and DTC436(ISAPnP) controllers. - * - * Locks: none - */ - -static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) +static struct Scsi_Host *generic_NCR5380_hw_init( + struct scsi_host_template *tpnt, struct device *pdev, + int base, int irq, int board) { unsigned int *ports; u8 *magic = NULL; @@ -108,64 +101,13 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) struct Scsi_Host *instance; struct NCR5380_hostdata *hostdata; #ifdef SCSI_G_NCR5380_MEM - unsigned long base; void __iomem *iomem; resource_size_t iomem_size; #endif - if (ncr_irq) - card.irq = ncr_irq; - if (ncr_dma) - card.dma = ncr_dma; - if (ncr_addr) - card.NCR5380_map_name = (NCR5380_map_type) ncr_addr; - if (ncr_5380) - card.board = BOARD_NCR5380; - else if (ncr_53c400) - card.board = BOARD_NCR53C400; - else if (ncr_53c400a) - card.board = BOARD_NCR53C400A; - else if (dtc_3181e) - card.board = BOARD_DTC3181E; - else if (hp_c2502) - card.board = BOARD_HP_C2502; -#ifndef SCSI_G_NCR5380_MEM - if (isapnp_present()) { - struct pnp_dev *dev = NULL; - while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { - if (pnp_device_attach(dev) < 0) - continue; - if (pnp_activate_dev(dev) < 0) { - printk(KERN_ERR "dtc436e probe: activate failed\n"); - pnp_device_detach(dev); - continue; - } - if (!pnp_port_valid(dev, 0)) { - printk(KERN_ERR "dtc436e probe: no valid port\n"); - pnp_device_detach(dev); - continue; - } - if (pnp_irq_valid(dev, 0)) - card.irq = pnp_irq(dev, 0); - else - card.irq = NO_IRQ; - if (pnp_dma_valid(dev, 0)) - card.dma = pnp_dma(dev, 0); - else - card.dma = DMA_NONE; - card.NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); - card.board = BOARD_DTC3181E; - break; - } - } -#endif - - if (!(card.NCR5380_map_name)) - return 0; - ports = NULL; flags = 0; - switch (card.board) { + switch (board) { case BOARD_NCR5380: flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP; break; @@ -191,17 +133,20 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) magic_configure(-1, 0, magic); region_size = 16; - - if (card.NCR5380_map_name != PORT_AUTO) + if (base) for (i = 0; ports[i]; i++) { - if (!request_region(ports[i], region_size, "ncr53c80")) - continue; - if (card.NCR5380_map_name == ports[i]) + if (base == ports[i]) { /* index found */ + if (!request_region(ports[i], + region_size, + "ncr53c80")) + return NULL; break; - release_region(ports[i], region_size); - } else + } + } + else for (i = 0; ports[i]; i++) { - if (!request_region(ports[i], region_size, "ncr53c80")) + if (!request_region(ports[i], region_size, + "ncr53c80")) continue; if (inb(ports[i]) == 0xff) break; @@ -212,38 +157,36 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) magic_configure(i, 0, magic); /* no IRQ yet */ outb(0xc0, ports[i] + 9); if (inb(ports[i] + 9) != 0x80) - return 0; - card.NCR5380_map_name = ports[i]; + goto out_release; + base = ports[i]; port_idx = i; } else - return 0; + return NULL; } else { - /* Not a 53C400A style setup - just grab */ + /* NCR5380 - no configuration, just grab */ region_size = 8; - if (!request_region(card.NCR5380_map_name, - region_size, "ncr5380")) - return 0; + if (!base || !request_region(base, region_size, "ncr5380")) + return NULL; } #else - base = card.NCR5380_map_name; iomem_size = NCR53C400_region_size; if (!request_mem_region(base, iomem_size, "ncr5380")) - return 0; + return NULL; iomem = ioremap(base, iomem_size); if (!iomem) { release_mem_region(base, iomem_size); - return 0; + return NULL; } #endif - instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); + instance = scsi_host_alloc(tpnt, sizeof(struct NCR5380_hostdata)); if (instance == NULL) goto out_release; hostdata = shost_priv(instance); #ifndef SCSI_G_NCR5380_MEM - instance->io_port = card.NCR5380_map_name; + instance->io_port = base; instance->n_io_port = region_size; hostdata->io_width = 1; /* 8-bit PDMA by default */ @@ -251,7 +194,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) * On NCR53C400 boards, NCR5380 registers are mapped 8 past * the base address. */ - switch (card.board) { + switch (board) { case BOARD_NCR53C400: instance->io_port += 8; hostdata->c400_ctl_status = 0; @@ -269,10 +212,10 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) break; } #else - instance->base = card.NCR5380_map_name; + instance->base = base; hostdata->iomem = iomem; hostdata->iomem_size = iomem_size; - switch (card.board) { + switch (board) { case BOARD_NCR53C400: hostdata->c400_ctl_status = 0x100; hostdata->c400_blk_cnt = 0x101; @@ -289,7 +232,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP)) goto out_unregister; - switch (card.board) { + switch (board) { case BOARD_NCR53C400: case BOARD_DTC3181E: case BOARD_NCR53C400A: @@ -299,8 +242,8 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) NCR5380_maybe_reset_bus(instance); - if (card.irq != IRQ_AUTO) - instance->irq = card.irq; + if (irq != IRQ_AUTO) + instance->irq = irq; else instance->irq = NCR5380_probe_irq(instance, 0xffff); @@ -311,7 +254,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) if (instance->irq != NO_IRQ) { #ifndef SCSI_G_NCR5380_MEM /* set IRQ for HP C2502 */ - if (card.board == BOARD_HP_C2502) + if (board == BOARD_HP_C2502) magic_configure(port_idx, instance->irq, magic); #endif if (request_irq(instance->irq, generic_NCR5380_intr, @@ -326,31 +269,28 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); } - return 1; + if (scsi_add_host(instance, pdev)) { + free_irq(irq, instance); + goto out_unregister; + } + scsi_scan_host(instance); + return instance; out_unregister: - scsi_unregister(instance); + scsi_host_put(instance); out_release: #ifndef SCSI_G_NCR5380_MEM - release_region(card.NCR5380_map_name, region_size); + release_region(base, region_size); #else iounmap(iomem); release_mem_region(base, iomem_size); #endif - return 0; + return NULL; } -/** - * generic_NCR5380_release_resources - free resources - * @instance: host adapter to clean up - * - * Free the generic interface resources from this adapter. - * - * Locks: none - */ - -static int generic_NCR5380_release_resources(struct Scsi_Host *instance) +static void generic_NCR5380_release_resources(struct Scsi_Host *instance) { + scsi_remove_host(instance); if (instance->irq != NO_IRQ) free_irq(instance->irq, instance); NCR5380_exit(instance); @@ -364,7 +304,7 @@ static int generic_NCR5380_release_resources(struct Scsi_Host *instance) release_mem_region(instance->base, hostdata->iomem_size); } #endif - return 0; + scsi_host_put(instance); } /** @@ -554,10 +494,9 @@ static int generic_NCR5380_dma_xfer_len(struct Scsi_Host *instance, #include "NCR5380.c" static struct scsi_host_template driver_template = { + .module = THIS_MODULE, .proc_name = DRV_MODULE_NAME, .name = "Generic NCR5380/NCR53C400 SCSI", - .detect = generic_NCR5380_detect, - .release = generic_NCR5380_release_resources, .info = generic_NCR5380_info, .queuecommand = generic_NCR5380_queue_command, .eh_abort_handler = generic_NCR5380_abort, @@ -571,26 +510,115 @@ static struct scsi_host_template driver_template = { .max_sectors = 128, }; -#include "scsi_module.c" -module_param(ncr_irq, int, 0); -module_param(ncr_dma, int, 0); -module_param(ncr_addr, int, 0); -module_param(ncr_5380, int, 0); -module_param(ncr_53c400, int, 0); -module_param(ncr_53c400a, int, 0); -module_param(dtc_3181e, int, 0); -module_param(hp_c2502, int, 0); -MODULE_LICENSE("GPL"); +static int generic_NCR5380_isa_match(struct device *pdev, unsigned int ndev) +{ + struct Scsi_Host *sh = NULL; + + sh = generic_NCR5380_hw_init(&driver_template, pdev, base[ndev], + irq[ndev], card[ndev]); + if (!sh && base[ndev]) + printk(KERN_WARNING "Card not found at address 0x%03x\n", + base[ndev]); + if (!sh) + return 0; -#if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE) -static struct isapnp_device_id id_table[] = { - { - ISAPNP_ANY_ID, ISAPNP_ANY_ID, - ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), - 0}, - {0} + dev_set_drvdata(pdev, sh); + return 1; +} + +static int generic_NCR5380_isa_remove(struct device *pdev, + unsigned int ndev) +{ + generic_NCR5380_release_resources(dev_get_drvdata(pdev)); + dev_set_drvdata(pdev, NULL); + return 0; +} + +static struct isa_driver generic_NCR5380_isa_driver = { + .match = generic_NCR5380_isa_match, + .remove = generic_NCR5380_isa_remove, + .driver = { + .name = DRV_MODULE_NAME + }, +}; +static int isa_registered; + +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) +static struct pnp_device_id generic_NCR5380_pnp_ids[] = { + { .id = "DTC436e", .driver_data = BOARD_DTC3181E }, + { .id = "" } }; +MODULE_DEVICE_TABLE(pnp, generic_NCR5380_pnp_ids); + +static int generic_NCR5380_pnp_probe(struct pnp_dev *pdev, + const struct pnp_device_id *id) +{ + struct Scsi_Host *sh; + int base, irq; -MODULE_DEVICE_TABLE(isapnp, id_table); + if (pnp_activate_dev(pdev) < 0) + return -EBUSY; + + base = pnp_port_start(pdev, 0); + irq = pnp_irq(pdev, 0); + + sh = generic_NCR5380_hw_init(&driver_template, &pdev->dev, base, irq, + id->driver_data); + if (!sh) + return -ENODEV; + + pnp_set_drvdata(pdev, sh); + return 0; +} + +static void generic_NCR5380_pnp_remove(struct pnp_dev *pdev) +{ + generic_NCR5380_release_resources(pnp_get_drvdata(pdev)); + pnp_set_drvdata(pdev, NULL); +} + +static struct pnp_driver generic_NCR5380_pnp_driver = { + .name = DRV_MODULE_NAME, + .id_table = generic_NCR5380_pnp_ids, + .probe = generic_NCR5380_pnp_probe, + .remove = generic_NCR5380_pnp_remove, +}; +static int pnp_registered; +#endif /* !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) */ + +static int __init generic_NCR5380_init(void) +{ + int ret = 0; + +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) + ret = pnp_register_driver(&generic_NCR5380_pnp_driver); + if (!ret) + pnp_registered = 1; #endif + ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS); + if (!ret) + isa_registered = 1; + +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) + if (pnp_registered) + ret = 0; +#endif + if (isa_registered) + ret = 0; + + return ret; +} + +static void __exit generic_NCR5380_exit(void) +{ +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) + if (pnp_registered) + pnp_unregister_driver(&generic_NCR5380_pnp_driver); +#endif + if (isa_registered) + isa_unregister_driver(&generic_NCR5380_isa_driver); +} + +module_init(generic_NCR5380_init); +module_exit(generic_NCR5380_exit); diff --git a/drivers/scsi/g_NCR5380.h b/drivers/scsi/g_NCR5380.h index 5951774..b175b92 100644 --- a/drivers/scsi/g_NCR5380.h +++ b/drivers/scsi/g_NCR5380.h @@ -14,15 +14,9 @@ #ifndef GENERIC_NCR5380_H #define GENERIC_NCR5380_H -#define __STRVAL(x) #x -#define STRVAL(x) __STRVAL(x) - #ifndef SCSI_G_NCR5380_MEM #define DRV_MODULE_NAME "g_NCR5380" -#define NCR5380_map_type int -#define NCR5380_map_name port - #define NCR5380_read(reg) \ inb(instance->io_port + (reg)) #define NCR5380_write(reg, value) \ @@ -38,8 +32,6 @@ /* therefore SCSI_G_NCR5380_MEM */ #define DRV_MODULE_NAME "g_NCR5380_mmio" -#define NCR5380_map_type unsigned long -#define NCR5380_map_name base #define NCR53C400_mem_base 0x3880 #define NCR53C400_host_buffer 0x3900 #define NCR53C400_region_size 0x3a00 -- Ondrej Zary ^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c 2016-09-24 18:59 ` [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary @ 2016-09-25 23:50 ` Christoph Hellwig 2016-09-26 3:29 ` Finn Thain 1 sibling, 0 replies; 13+ messages in thread From: Christoph Hellwig @ 2016-09-25 23:50 UTC (permalink / raw) To: Ondrej Zary; +Cc: Christoph Hellwig, Finn Thain, linux-scsi, linux-kernel > +static int generic_NCR5380_isa_match(struct device *pdev, unsigned int ndev) > +{ > + struct Scsi_Host *sh = NULL; > + > + sh = generic_NCR5380_hw_init(&driver_template, pdev, base[ndev], > + irq[ndev], card[ndev]); > + if (!sh && base[ndev]) > + printk(KERN_WARNING "Card not found at address 0x%03x\n", > + base[ndev]); > + if (!sh) > + return 0; > > + dev_set_drvdata(pdev, sh); Any reason not to move the dev_set_drvdata into generic_NCR5380_hw_init? That would also allow to properly propagate the error down to the caller, which would be useful for the PNP case. Otherwise this look great to me. ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c 2016-09-24 18:59 ` [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary 2016-09-25 23:50 ` Christoph Hellwig @ 2016-09-26 3:29 ` Finn Thain 2016-09-27 12:55 ` Ondrej Zary 1 sibling, 1 reply; 13+ messages in thread From: Finn Thain @ 2016-09-26 3:29 UTC (permalink / raw) To: Ondrej Zary; +Cc: Christoph Hellwig, linux-scsi, linux-kernel On Sat, 24 Sep 2016, Ondrej Zary wrote: > Convert g_NCR5380 to use scsi_add_host instead of scsi_module.c > Use pnp_driver and isa_driver to manage cards. > > Signed-off-by: Ondrej Zary <linux@rainbow-software.org> > --- > drivers/scsi/g_NCR5380.c | 310 +++++++++++++++++++++++++--------------------- > drivers/scsi/g_NCR5380.h | 8 -- > 2 files changed, 169 insertions(+), 149 deletions(-) > > diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c > index 5162de6..6cf6b00 100644 > --- a/drivers/scsi/g_NCR5380.c > +++ b/drivers/scsi/g_NCR5380.c > @@ -30,24 +30,25 @@ > #include "NCR5380.h" > #include <linux/init.h> > #include <linux/ioport.h> > -#include <linux/isapnp.h> > +#include <linux/isa.h> > +#include <linux/pnp.h> > #include <linux/interrupt.h> > > -static int ncr_irq; > -static int ncr_dma; > -static int ncr_addr; > -static int ncr_5380; > -static int ncr_53c400; > -static int ncr_53c400a; > -static int dtc_3181e; > -static int hp_c2502; > - > -static struct card { > - NCR5380_map_type NCR5380_map_name; > - int irq; > - int dma; > - int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ > -} card; > +#define MAX_CARDS 8 > + > +static int irq[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; > +module_param_array(irq, int, NULL, 0); > +MODULE_PARM_DESC(irq, "IRQ number(s)"); > + > +static int base[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; > +module_param_array(base, int, NULL, 0); > +MODULE_PARM_DESC(base, "base address(es)"); > + > +static int card[] = { -1, -1, -1, -1, -1, -1, -1, -1 }; > +module_param_array(card, int, NULL, 0); > +MODULE_PARM_DESC(card, "card type (0=NCR5380, 1=NCR53C400, 2=NCR53C400A, 3=DTC3181E, 4=HP C2502)"); > + > +MODULE_LICENSE("GPL"); If you are going to change all of the module parameters and break every user's setup, at least explain what changed and why in the commit log and update the documentation in the kernel tree. If you really want to help those users (most of whom gain nothing from this patch) you could also update the documentation elsewhere: http://www.sane-project.org/man/sane-scsi.5.html http://www.xsane.org/rauch-domain/sane-umax/sane-umax-config-doc.html http://www.meier-geinitz.de/sane/mustek-backend/ I'm not in favour of this patch, but Christoph liked it so I'll leave it at that. > > #ifndef SCSI_G_NCR5380_MEM > /* > @@ -73,17 +74,9 @@ static void magic_configure(int idx, u8 irq, u8 magic[]) > } > #endif > > -/** > - * generic_NCR5380_detect - look for NCR5380 controllers > - * @tpnt: the scsi template > - * > - * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E > - * and DTC436(ISAPnP) controllers. > - * > - * Locks: none > - */ > - > -static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > +static struct Scsi_Host *generic_NCR5380_hw_init( > + struct scsi_host_template *tpnt, struct device *pdev, > + int base, int irq, int board) This allocates and returns a Scsi_Host so the name is misleading. But the name isn't the only problem; the real problem has already been pointed out by Christoph: the caller needs the error code to be returned not the Scsi_Host pointer. > { > unsigned int *ports; > u8 *magic = NULL; > @@ -108,64 +101,13 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > struct Scsi_Host *instance; > struct NCR5380_hostdata *hostdata; > #ifdef SCSI_G_NCR5380_MEM > - unsigned long base; > void __iomem *iomem; > resource_size_t iomem_size; > #endif > > - if (ncr_irq) > - card.irq = ncr_irq; > - if (ncr_dma) > - card.dma = ncr_dma; > - if (ncr_addr) > - card.NCR5380_map_name = (NCR5380_map_type) ncr_addr; > - if (ncr_5380) > - card.board = BOARD_NCR5380; > - else if (ncr_53c400) > - card.board = BOARD_NCR53C400; > - else if (ncr_53c400a) > - card.board = BOARD_NCR53C400A; > - else if (dtc_3181e) > - card.board = BOARD_DTC3181E; > - else if (hp_c2502) > - card.board = BOARD_HP_C2502; > -#ifndef SCSI_G_NCR5380_MEM > - if (isapnp_present()) { > - struct pnp_dev *dev = NULL; > - while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { > - if (pnp_device_attach(dev) < 0) > - continue; > - if (pnp_activate_dev(dev) < 0) { > - printk(KERN_ERR "dtc436e probe: activate failed\n"); > - pnp_device_detach(dev); > - continue; > - } > - if (!pnp_port_valid(dev, 0)) { > - printk(KERN_ERR "dtc436e probe: no valid port\n"); > - pnp_device_detach(dev); > - continue; > - } > - if (pnp_irq_valid(dev, 0)) > - card.irq = pnp_irq(dev, 0); > - else > - card.irq = NO_IRQ; > - if (pnp_dma_valid(dev, 0)) > - card.dma = pnp_dma(dev, 0); > - else > - card.dma = DMA_NONE; > - card.NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); > - card.board = BOARD_DTC3181E; > - break; > - } > - } > -#endif > - > - if (!(card.NCR5380_map_name)) > - return 0; > - > ports = NULL; > flags = 0; > - switch (card.board) { > + switch (board) { > case BOARD_NCR5380: > flags = FLAG_NO_PSEUDO_DMA | FLAG_DMA_FIXUP; > break; > @@ -191,17 +133,20 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > magic_configure(-1, 0, magic); > > region_size = 16; > - > - if (card.NCR5380_map_name != PORT_AUTO) > + if (base) > for (i = 0; ports[i]; i++) { > - if (!request_region(ports[i], region_size, "ncr53c80")) > - continue; > - if (card.NCR5380_map_name == ports[i]) > + if (base == ports[i]) { /* index found */ > + if (!request_region(ports[i], > + region_size, > + "ncr53c80")) > + return NULL; > break; > - release_region(ports[i], region_size); > - } else > + } > + } > + else > for (i = 0; ports[i]; i++) { > - if (!request_region(ports[i], region_size, "ncr53c80")) > + if (!request_region(ports[i], region_size, > + "ncr53c80")) > continue; > if (inb(ports[i]) == 0xff) > break; > @@ -212,38 +157,36 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > magic_configure(i, 0, magic); /* no IRQ yet */ > outb(0xc0, ports[i] + 9); > if (inb(ports[i] + 9) != 0x80) > - return 0; > - card.NCR5380_map_name = ports[i]; > + goto out_release; > + base = ports[i]; > port_idx = i; > } else > - return 0; > + return NULL; > } > else > { > - /* Not a 53C400A style setup - just grab */ > + /* NCR5380 - no configuration, just grab */ > region_size = 8; > - if (!request_region(card.NCR5380_map_name, > - region_size, "ncr5380")) > - return 0; > + if (!base || !request_region(base, region_size, "ncr5380")) > + return NULL; > } > #else > - base = card.NCR5380_map_name; > iomem_size = NCR53C400_region_size; > if (!request_mem_region(base, iomem_size, "ncr5380")) > - return 0; > + return NULL; > iomem = ioremap(base, iomem_size); > if (!iomem) { > release_mem_region(base, iomem_size); > - return 0; > + return NULL; > } > #endif > - instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); > + instance = scsi_host_alloc(tpnt, sizeof(struct NCR5380_hostdata)); > if (instance == NULL) > goto out_release; > hostdata = shost_priv(instance); > > #ifndef SCSI_G_NCR5380_MEM > - instance->io_port = card.NCR5380_map_name; > + instance->io_port = base; > instance->n_io_port = region_size; > hostdata->io_width = 1; /* 8-bit PDMA by default */ > > @@ -251,7 +194,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > * On NCR53C400 boards, NCR5380 registers are mapped 8 past > * the base address. > */ > - switch (card.board) { > + switch (board) { > case BOARD_NCR53C400: > instance->io_port += 8; > hostdata->c400_ctl_status = 0; > @@ -269,10 +212,10 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > break; > } > #else > - instance->base = card.NCR5380_map_name; > + instance->base = base; > hostdata->iomem = iomem; > hostdata->iomem_size = iomem_size; > - switch (card.board) { > + switch (board) { > case BOARD_NCR53C400: > hostdata->c400_ctl_status = 0x100; > hostdata->c400_blk_cnt = 0x101; > @@ -289,7 +232,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > if (NCR5380_init(instance, flags | FLAG_LATE_DMA_SETUP)) > goto out_unregister; > > - switch (card.board) { > + switch (board) { > case BOARD_NCR53C400: > case BOARD_DTC3181E: > case BOARD_NCR53C400A: > @@ -299,8 +242,8 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > > NCR5380_maybe_reset_bus(instance); > > - if (card.irq != IRQ_AUTO) > - instance->irq = card.irq; > + if (irq != IRQ_AUTO) > + instance->irq = irq; > else > instance->irq = NCR5380_probe_irq(instance, 0xffff); > > @@ -311,7 +254,7 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > if (instance->irq != NO_IRQ) { > #ifndef SCSI_G_NCR5380_MEM > /* set IRQ for HP C2502 */ > - if (card.board == BOARD_HP_C2502) > + if (board == BOARD_HP_C2502) > magic_configure(port_idx, instance->irq, magic); > #endif > if (request_irq(instance->irq, generic_NCR5380_intr, > @@ -326,31 +269,28 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) > printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); > } > > - return 1; Instead of this: > + if (scsi_add_host(instance, pdev)) { > + free_irq(irq, instance); > + goto out_unregister; > + } > + scsi_scan_host(instance); > + return instance; > please use the following (note the missing NCR5380_exit() call): + if (scsi_add_host(instance, pdev)) + goto out_free_irq; + scsi_scan_host(instance); + return(instance); + +out_free_irq: + if (instance->irq != NO_IRQ) + free_irq(instance->irq, instance); + NCR5380_exit(instance); > out_unregister: > - scsi_unregister(instance); > + scsi_host_put(instance); > out_release: > #ifndef SCSI_G_NCR5380_MEM > - release_region(card.NCR5380_map_name, region_size); > + release_region(base, region_size); > #else > iounmap(iomem); > release_mem_region(base, iomem_size); > #endif > - return 0; > + return NULL; > } > > -/** > - * generic_NCR5380_release_resources - free resources > - * @instance: host adapter to clean up > - * > - * Free the generic interface resources from this adapter. > - * > - * Locks: none > - */ > - > -static int generic_NCR5380_release_resources(struct Scsi_Host *instance) > +static void generic_NCR5380_release_resources(struct Scsi_Host *instance) > { > + scsi_remove_host(instance); > if (instance->irq != NO_IRQ) > free_irq(instance->irq, instance); > NCR5380_exit(instance); > @@ -364,7 +304,7 @@ static int generic_NCR5380_release_resources(struct Scsi_Host *instance) > release_mem_region(instance->base, hostdata->iomem_size); > } > #endif > - return 0; > + scsi_host_put(instance); The sequence of operations here should be the same as the error path above. > } > > /** > @@ -554,10 +494,9 @@ static int generic_NCR5380_dma_xfer_len(struct Scsi_Host *instance, > #include "NCR5380.c" > > static struct scsi_host_template driver_template = { > + .module = THIS_MODULE, > .proc_name = DRV_MODULE_NAME, > .name = "Generic NCR5380/NCR53C400 SCSI", > - .detect = generic_NCR5380_detect, > - .release = generic_NCR5380_release_resources, > .info = generic_NCR5380_info, > .queuecommand = generic_NCR5380_queue_command, > .eh_abort_handler = generic_NCR5380_abort, > @@ -571,26 +510,115 @@ static struct scsi_host_template driver_template = { > .max_sectors = 128, > }; > > -#include "scsi_module.c" > > -module_param(ncr_irq, int, 0); > -module_param(ncr_dma, int, 0); > -module_param(ncr_addr, int, 0); > -module_param(ncr_5380, int, 0); > -module_param(ncr_53c400, int, 0); > -module_param(ncr_53c400a, int, 0); > -module_param(dtc_3181e, int, 0); > -module_param(hp_c2502, int, 0); > -MODULE_LICENSE("GPL"); > +static int generic_NCR5380_isa_match(struct device *pdev, unsigned int ndev) > +{ > + struct Scsi_Host *sh = NULL; > + > + sh = generic_NCR5380_hw_init(&driver_template, pdev, base[ndev], > + irq[ndev], card[ndev]); > + if (!sh && base[ndev]) > + printk(KERN_WARNING "Card not found at address 0x%03x\n", > + base[ndev]); > + if (!sh) > + return 0; For clarity, please write that as, if (!instance) { if (base[ndev]) printk(...) return 0; } > > -#if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE) > -static struct isapnp_device_id id_table[] = { > - { > - ISAPNP_ANY_ID, ISAPNP_ANY_ID, > - ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), > - 0}, > - {0} > + dev_set_drvdata(pdev, sh); > + return 1; > +} > + > +static int generic_NCR5380_isa_remove(struct device *pdev, > + unsigned int ndev) > +{ > + generic_NCR5380_release_resources(dev_get_drvdata(pdev)); > + dev_set_drvdata(pdev, NULL); > + return 0; > +} > + > +static struct isa_driver generic_NCR5380_isa_driver = { > + .match = generic_NCR5380_isa_match, > + .remove = generic_NCR5380_isa_remove, > + .driver = { > + .name = DRV_MODULE_NAME > + }, > +}; > +static int isa_registered; > + > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > +static struct pnp_device_id generic_NCR5380_pnp_ids[] = { > + { .id = "DTC436e", .driver_data = BOARD_DTC3181E }, > + { .id = "" } > }; > +MODULE_DEVICE_TABLE(pnp, generic_NCR5380_pnp_ids); > + > +static int generic_NCR5380_pnp_probe(struct pnp_dev *pdev, > + const struct pnp_device_id *id) > +{ > + struct Scsi_Host *sh; > + int base, irq; > > -MODULE_DEVICE_TABLE(isapnp, id_table); > + if (pnp_activate_dev(pdev) < 0) > + return -EBUSY; > + > + base = pnp_port_start(pdev, 0); > + irq = pnp_irq(pdev, 0); > + > + sh = generic_NCR5380_hw_init(&driver_template, &pdev->dev, base, irq, > + id->driver_data); > + if (!sh) > + return -ENODEV; > + > + pnp_set_drvdata(pdev, sh); > + return 0; > +} > + > +static void generic_NCR5380_pnp_remove(struct pnp_dev *pdev) > +{ > + generic_NCR5380_release_resources(pnp_get_drvdata(pdev)); > + pnp_set_drvdata(pdev, NULL); > +} > + > +static struct pnp_driver generic_NCR5380_pnp_driver = { > + .name = DRV_MODULE_NAME, > + .id_table = generic_NCR5380_pnp_ids, > + .probe = generic_NCR5380_pnp_probe, > + .remove = generic_NCR5380_pnp_remove, > +}; > +static int pnp_registered; > +#endif /* !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) */ > + > +static int __init generic_NCR5380_init(void) > +{ > + int ret = 0; > + > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > + ret = pnp_register_driver(&generic_NCR5380_pnp_driver); > + if (!ret) > + pnp_registered = 1; > #endif > + ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS); > + if (!ret) > + isa_registered = 1; > + > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > + if (pnp_registered) > + ret = 0; > +#endif > + if (isa_registered) > + ret = 0; > + > + return ret; > +} > + > +static void __exit generic_NCR5380_exit(void) > +{ > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > + if (pnp_registered) > + pnp_unregister_driver(&generic_NCR5380_pnp_driver); > +#endif > + if (isa_registered) > + isa_unregister_driver(&generic_NCR5380_isa_driver); > +} > + I find that hard to follow. This should be equivalent and simpler: static int __init generic_NCR5380_init(void) { isa_ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS); #if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) pnp_ret = pnp_register_driver(&generic_NCR5380_pnp_driver); return pnp_ret ? isa_ret : 0; #endif return isa_ret; } static void __exit generic_NCR5380_exit(void) { if (!isa_ret) isa_unregister_driver(&generic_NCR5380_isa_driver); #if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) if (!pnp_ret) pnp_unregister_driver(&generic_NCR5380_pnp_driver); #endif } -- > +module_init(generic_NCR5380_init); > +module_exit(generic_NCR5380_exit); > diff --git a/drivers/scsi/g_NCR5380.h b/drivers/scsi/g_NCR5380.h > index 5951774..b175b92 100644 > --- a/drivers/scsi/g_NCR5380.h > +++ b/drivers/scsi/g_NCR5380.h > @@ -14,15 +14,9 @@ > #ifndef GENERIC_NCR5380_H > #define GENERIC_NCR5380_H > > -#define __STRVAL(x) #x > -#define STRVAL(x) __STRVAL(x) > - > #ifndef SCSI_G_NCR5380_MEM > #define DRV_MODULE_NAME "g_NCR5380" > > -#define NCR5380_map_type int > -#define NCR5380_map_name port > - > #define NCR5380_read(reg) \ > inb(instance->io_port + (reg)) > #define NCR5380_write(reg, value) \ > @@ -38,8 +32,6 @@ > /* therefore SCSI_G_NCR5380_MEM */ > #define DRV_MODULE_NAME "g_NCR5380_mmio" > > -#define NCR5380_map_type unsigned long > -#define NCR5380_map_name base > #define NCR53C400_mem_base 0x3880 > #define NCR53C400_host_buffer 0x3900 > #define NCR53C400_region_size 0x3a00 > ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c 2016-09-26 3:29 ` Finn Thain @ 2016-09-27 12:55 ` Ondrej Zary 2016-09-28 0:06 ` Finn Thain 0 siblings, 1 reply; 13+ messages in thread From: Ondrej Zary @ 2016-09-27 12:55 UTC (permalink / raw) To: Finn Thain; +Cc: Christoph Hellwig, linux-scsi, linux-kernel On Monday 26 September 2016, Finn Thain wrote: [...] > Instead of this: > > + if (scsi_add_host(instance, pdev)) { > > + free_irq(irq, instance); > > + goto out_unregister; > > + } > > + scsi_scan_host(instance); > > + return instance; > > please use the following (note the missing NCR5380_exit() call): > > + if (scsi_add_host(instance, pdev)) > + goto out_free_irq; > + scsi_scan_host(instance); > + return(instance); > + > +out_free_irq: > + if (instance->irq != NO_IRQ) > + free_irq(instance->irq, instance); > + NCR5380_exit(instance); > > > out_unregister: > > - scsi_unregister(instance); > > + scsi_host_put(instance); > > out_release: > > #ifndef SCSI_G_NCR5380_MEM > > - release_region(card.NCR5380_map_name, region_size); > > + release_region(base, region_size); > > #else > > iounmap(iomem); > > release_mem_region(base, iomem_size); > > #endif > > - return 0; > > + return NULL; > > } > > > > -/** > > - * generic_NCR5380_release_resources - free resources > > - * @instance: host adapter to clean up > > - * > > - * Free the generic interface resources from this adapter. > > - * > > - * Locks: none > > - */ > > - > > -static int generic_NCR5380_release_resources(struct Scsi_Host *instance) > > +static void generic_NCR5380_release_resources(struct Scsi_Host > > *instance) { > > + scsi_remove_host(instance); > > if (instance->irq != NO_IRQ) > > free_irq(instance->irq, instance); > > NCR5380_exit(instance); > > @@ -364,7 +304,7 @@ static int generic_NCR5380_release_resources(struct > > Scsi_Host *instance) release_mem_region(instance->base, > > hostdata->iomem_size); > > } > > #endif > > - return 0; > > + scsi_host_put(instance); > > The sequence of operations here should be the same as the error path > above. I put scsi_host_put() call at the end because the release_mem_region code (in the MMIO case) dereferences the hostdata pointer. I don't think it's safe to do after scsi_host_put(). [...] > > +static int pnp_registered; > > +#endif /* !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) */ > > + > > +static int __init generic_NCR5380_init(void) > > +{ > > + int ret = 0; > > + > > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > > + ret = pnp_register_driver(&generic_NCR5380_pnp_driver); > > + if (!ret) > > + pnp_registered = 1; > > #endif > > + ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS); > > + if (!ret) > > + isa_registered = 1; > > + > > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > > + if (pnp_registered) > > + ret = 0; > > +#endif > > + if (isa_registered) > > + ret = 0; > > + > > + return ret; > > +} > > + > > +static void __exit generic_NCR5380_exit(void) > > +{ > > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > > + if (pnp_registered) > > + pnp_unregister_driver(&generic_NCR5380_pnp_driver); > > +#endif > > + if (isa_registered) > > + isa_unregister_driver(&generic_NCR5380_isa_driver); > > +} > > + > > I find that hard to follow. This should be equivalent and simpler: > > static int __init generic_NCR5380_init(void) > { > isa_ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS); > #if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > pnp_ret = pnp_register_driver(&generic_NCR5380_pnp_driver); > return pnp_ret ? isa_ret : 0; > #endif > return isa_ret; > } > > static void __exit generic_NCR5380_exit(void) > { > if (!isa_ret) > isa_unregister_driver(&generic_NCR5380_isa_driver); > #if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > if (!pnp_ret) > pnp_unregister_driver(&generic_NCR5380_pnp_driver); > #endif > } Doesn't make it any better, IMHO. Good that it's shorter but not cleaner - especially this: > return pnp_ret ? isa_ret : 0; Also looking at the _exit function, meaning of isa_ret and pnp_ret is not obvious there. Maybe we should have a module_isa_pnp_driver() macro. -- Ondrej Zary ^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c 2016-09-27 12:55 ` Ondrej Zary @ 2016-09-28 0:06 ` Finn Thain 0 siblings, 0 replies; 13+ messages in thread From: Finn Thain @ 2016-09-28 0:06 UTC (permalink / raw) To: Ondrej Zary; +Cc: Christoph Hellwig, linux-scsi, linux-kernel On Tue, 27 Sep 2016, Ondrej Zary wrote: > On Monday 26 September 2016, Finn Thain wrote: > > [...] > > > > @@ -364,7 +304,7 @@ static int generic_NCR5380_release_resources(struct > > > Scsi_Host *instance) release_mem_region(instance->base, > > > hostdata->iomem_size); > > > } > > > #endif > > > - return 0; > > > + scsi_host_put(instance); > > > > The sequence of operations here should be the same as the error path > > above. > > I put scsi_host_put() call at the end because the release_mem_region > code (in the MMIO case) dereferences the hostdata pointer. I don't think > it's safe to do after scsi_host_put(). It's funny you say that, I already fixed a few of those use-after-free bugs in the other 5380 drivers. To avoid the bug, you'd need to use a temporary variable, like the fixes I did elsewhere. Don't worry about changing it, this part of the driver gets revisited in my existing patch queue anyway. > > [...] > > > > +static int pnp_registered; > > > +#endif /* !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) */ > > > + > > > +static int __init generic_NCR5380_init(void) > > > +{ > > > + int ret = 0; > > > + > > > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > > > + ret = pnp_register_driver(&generic_NCR5380_pnp_driver); > > > + if (!ret) > > > + pnp_registered = 1; > > > #endif > > > + ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS); > > > + if (!ret) > > > + isa_registered = 1; > > > + > > > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > > > + if (pnp_registered) > > > + ret = 0; > > > +#endif > > > + if (isa_registered) > > > + ret = 0; > > > + > > > + return ret; > > > +} > > > + > > > +static void __exit generic_NCR5380_exit(void) > > > +{ > > > +#if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > > > + if (pnp_registered) > > > + pnp_unregister_driver(&generic_NCR5380_pnp_driver); > > > +#endif > > > + if (isa_registered) > > > + isa_unregister_driver(&generic_NCR5380_isa_driver); > > > +} > > > + > > > > I find that hard to follow. This should be equivalent and simpler: > > > > static int __init generic_NCR5380_init(void) > > { > > isa_ret = isa_register_driver(&generic_NCR5380_isa_driver, MAX_CARDS); > > #if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > > pnp_ret = pnp_register_driver(&generic_NCR5380_pnp_driver); > > return pnp_ret ? isa_ret : 0; > > #endif > > return isa_ret; > > } > > > > static void __exit generic_NCR5380_exit(void) > > { > > if (!isa_ret) > > isa_unregister_driver(&generic_NCR5380_isa_driver); > > #if !defined(SCSI_G_NCR5380_MEM) && defined(CONFIG_PNP) > > if (!pnp_ret) > > pnp_unregister_driver(&generic_NCR5380_pnp_driver); > > #endif > > } > > Doesn't make it any better, IMHO. Good that it's shorter but not cleaner - > especially this: > > return pnp_ret ? isa_ret : 0; The problem with that line is that pnp_ret is always discarded, same as in your version. I think my version makes that clear, which is what matters to me. > > Also looking at the _exit function, meaning of isa_ret and pnp_ret is not > obvious there. > > Maybe we should have a module_isa_pnp_driver() macro. > > FWIW I would hope that the hypothetical definition of this `module_isa_pnp_driver' macro would have the same properties as my version: shorter, uses no temporaries and uses one less #ifdef, and is generally easier for me to read. -- ^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2016-09-30 1:54 UTC | newest] Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2016-09-27 19:00 [PATCH v2 0/3] g_NCR5380: Modernization Ondrej Zary 2016-09-27 19:00 ` [PATCH 1/3] g_NCR5380: Remove deprecated __setup Ondrej Zary 2016-09-28 22:56 ` Finn Thain 2016-09-27 19:00 ` [PATCH 2/3] g_NCR5380: Reduce overrides[] from array to struct Ondrej Zary 2016-09-28 22:57 ` Finn Thain 2016-09-27 19:00 ` [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary 2016-09-28 22:57 ` Finn Thain 2016-09-30 1:53 ` [PATCH v2 0/3] g_NCR5380: Modernization Martin K. Petersen -- strict thread matches above, loose matches on Subject: below -- 2016-09-24 18:59 [PATCH " Ondrej Zary 2016-09-24 18:59 ` [PATCH 3/3] g_NCR5380: Stop using scsi_module.c Ondrej Zary 2016-09-25 23:50 ` Christoph Hellwig 2016-09-26 3:29 ` Finn Thain 2016-09-27 12:55 ` Ondrej Zary 2016-09-28 0:06 ` Finn Thain
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