g_NCR5380: Modernization
Subsystems (2)
cover g_NCR5380: Modernization
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)?
Signature · 1 line
Ondrej Zary
PATCH 1/3 g_NCR5380: Remove deprecated __setup
Remove deprecated __setup for parsing command line parameters. g_NCR5380.* parameters could be used instead.
--- drivers/scsi/g_NCR5380.c | 135 ---------------------------------------------- 1 file changed, 135 deletions(-)
drivers/scsi/g_NCR5380.c +0 -135
@@ -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);
Signature · 1 line
Ondrej Zary
Re: [PATCH 1/3] g_NCR5380: Remove deprecated __setup
Quoted 2 lines · Ondrej Zary
Remove deprecated
__setupfor parsing command line parameters. g_NCR5380.* parameters could be used instead.
This assumes everyone has moved over to it. But I suspect the remaining hand full of users could adjust..
Re: [PATCH 1/3] g_NCR5380: Remove deprecated __setup
In reply to Ondrej ZaryQuoted 2 lines · Ondrej Zary
Remove deprecated
__setupfor parsing command line parameters. g_NCR5380.* parameters could be used instead.
Removing useful features is deprecated too.
The best reason I can see for removing the __setup parameters is that the g_NCR5380 module parameters clash with those of the g_NCR5380_mmio module (when both are built-in). But only a custom kernel would configure them as built-in drivers, and it probably would not have both drivers enabled. So a clash seems unlikely.
Anyway, Christoph seems to be OK with this so I won't object. But if you assume that no-one has built-in g_NCR5380{,_mmio} drivers, or you believe that the benefit outweighs the inconvenience of the breakage caused, then the commit log should explain that.
Quoted 157 lines
Signed-off-by Ondrej Zary <[email protected]>--- drivers/scsi/g_NCR5380.c | 135 ---------------------------------------------- 1 file changed, 135 deletions(-)drivers/scsi/g_NCR5380.c +0
-135@@ -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);
PATCH 2/3 g_NCR5380: Reduce overrides[] from array to struct
In reply to Ondrej ZaryRemove compile-time card type definition GENERIC_NCR5380_OVERRIDE. Then remove all code iterating the overrides[] array and reduce it to struct card.
--- drivers/scsi/g_NCR5380.c | 351 ++++++++++++++++++++++------------------------ 1 file changed, 167 insertions(+), 184 deletions(-)
drivers/scsi/g_NCR5380.c +167 -184
@@ -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 ; }/**
Signature · 1 line
Ondrej Zary
Re: [PATCH 2/3] g_NCR5380: Reduce overrides[] from array to struct
Quoted 5 lines · Ondrej Zary
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 <[email protected]>
Looks great!
Re: [PATCH 2/3] g_NCR5380: Reduce overrides[] from array to struct
In reply to Ondrej ZaryQuoted 3 lines · Ondrej Zary
Remove compile-time card type definition
GENERIC_NCR5380_OVERRIDE. Then remove all code iterating the overrides[] array and reduce it to struct card.
There is a reference to the compile-time override in Documentation/scsi/g_NCR5380.txt which needs to be removed also.
The patch looks fine aside from that.
PATCH 3/3 g_NCR5380: Stop using scsi_module.c
In reply to Ondrej ZaryConvert g_NCR5380 to use scsi_add_host instead of scsi_module.c Use pnp_driver and isa_driver to manage cards.
--- drivers/scsi/g_NCR5380.c | 310 +++++++++++++++++++++++++--------------------- drivers/scsi/g_NCR5380.h | 8 -- 2 files changed, 169 insertions(+), 149 deletions(-)
drivers/scsi/g_NCR5380.c +169 -141
@@ -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);
drivers/scsi/g_NCR5380.h +0 -8
@@ -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
Signature · 1 line
Ondrej Zary
Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c
drivers/scsi/g_NCR5380.c static struct scsi_host_template driver_template = { · line 526
Quoted 13 lines
drivers/scsi/g_NCR5380.c +12
-0+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.
Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c
In reply to Ondrej ZaryQuoted 42 lines · Ondrej Zary
Convert
g_NCR5380to usescsi_add_hostinstead ofscsi_module.cUsepnp_driverandisa_driverto manage cards.Signed-off-by Ondrej Zary <[email protected]>--- drivers/scsi/g_NCR5380.c | 310 +++++++++++++++++++++++++--------------------- drivers/scsi/g_NCR5380.h | 8 -- 2 files changed, 169 insertions(+), 149 deletions(-)drivers/scsi/g_NCR5380.c +7
-16@@ -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)" );
drivers/scsi/g_NCR5380.c line 51
Quoted 10 lines
drivers/scsi/g_NCR5380.c +10
-0+ +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.
Quoted 11 lines
drivers/scsi/g_NCR5380.c +0
-4#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 -*
drivers/scsi/g_NCR5380.c static void magic_configure(int idx, u8 irq, u8 magic[]) · line 79
Quoted 10 lines
drivers/scsi/g_NCR5380.c +3
-7-* 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.
Quoted 199 lines
drivers/scsi/g_NCR5380.c +29
-79{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,
drivers/scsi/g_NCR5380.c static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) · line 329
Quoted 4 lines
drivers/scsi/g_NCR5380.c +0
-1@@ -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:
drivers/scsi/g_NCR5380.c static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) · line 278
Quoted 7 lines
drivers/scsi/g_NCR5380.c +6
-0+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);
Quoted 32 lines
drivers/scsi/g_NCR5380.c +5
-13out_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);
drivers/scsi/g_NCR5380.c static int generic_NCR5380_release_resources(struct Scsi_Host *instance) · line 307
Quoted 5 lines
drivers/scsi/g_NCR5380.c +1
-1@@ -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.
Quoted 31 lines
drivers/scsi/g_NCR5380.c +2
-12}/** @@ -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)
drivers/scsi/g_NCR5380.c static struct scsi_host_template driver_template = { · line 524
Quoted 10 lines
drivers/scsi/g_NCR5380.c +10
-0+{ +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;
}Quoted 96 lines
drivers/scsi/g_NCR5380.c +84
-8-#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; +} +
drivers/scsi/g_NCR5380.c static struct scsi_host_template driver_template = { · line 622
Quoted 10 lines
drivers/scsi/g_NCR5380.c +10
-0+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
}
Quoted 32 lines
drivers/scsi/g_NCR5380.c +2
-0+module_init (generic_NCR5380_init); +module_exit (generic_NCR5380_exit);drivers/scsi/g_NCR5380.h +0
-8@@ -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
Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c
On Monday 26 September 2016, Finn Thain wrote:
[...]
Quoted 53 lines
Instead of this:
drivers/scsi/g_NCR5380.c static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt) · line 277
Quoted 6 lines
drivers/scsi/g_NCR5380.c +6
-0+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):(quoted diff) +9
-0+ 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);Quoted 34 lines
out_unregister:drivers/scsi/g_NCR5380.c +4
-13-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) {
drivers/scsi/g_NCR5380.c +1
-0+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,
Quoted 8 lines
drivers/scsi/g_NCR5380.c static int generic_NCR5380_release_resources(struct Scsi_Host *instance) · line 307
Quoted 5 lines
drivers/scsi/g_NCR5380.c +1
-1hostdata->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().
[...]
Quoted 50 lines
Quoted 26 lines
drivers/scsi/g_NCR5380.c +25
-0+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; +} +drivers/scsi/g_NCR5380.c static struct scsi_host_template driver_template = { · line 622
Quoted 10 lines
drivers/scsi/g_NCR5380.c +10
-0+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
__initgeneric_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
__exitgeneric_NCR5380_exit(void)
Quoted 8 lines
{ 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:
Quoted 1 line
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.
Signature · 1 line
Ondrej Zary
Re: [PATCH 3/3] g_NCR5380: Stop using scsi_module.c
Quoted 15 lines · Ondrej Zary
On Monday 26 September 2016, Finn Thain wrote:
[...]
Quoted 10 lines
drivers/scsi/g_NCR5380.c static int generic_NCR5380_release_resources(struct · line 308
Quoted 7 lines
drivers/scsi/g_NCR5380.c +1
-1@@ -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.
Quoted 3 lines
I put
scsi_host_put()call at the end because therelease_mem_regioncode (in the MMIO case) dereferences the hostdata pointer. I don't think it's safe to do afterscsi_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.
Quoted 62 lines
[...]
Quoted 50 lines
Quoted 26 lines
drivers/scsi/g_NCR5380.c +25
-0+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; +} +drivers/scsi/g_NCR5380.c static struct scsi_host_template driver_template = { · line 622
Quoted 10 lines
drivers/scsi/g_NCR5380.c +10
-0+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
__initgeneric_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
__exitgeneric_NCR5380_exit(void)Quoted 8 lines
{ 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
}
Quoted 3 lines
Doesn't make it any better, IMHO. Good that it's shorter but not cleaner - especially this:
Quoted 1 line
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.
Quoted 7 lines
Also looking at the
_exitfunction, meaning ofisa_retandpnp_retis 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.
[PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio
In reply to Ondrej ZaryMerge the PIO and MMIO code (with the help of ioport_map) in g_NCR5380 and delete g_NCR5380_mmio.
--- drivers/scsi/Kconfig | 32 ++--- drivers/scsi/g_NCR5380.c | 257 +++++++++++++++++++---------------------- drivers/scsi/g_NCR5380.h | 33 ++---- drivers/scsi/g_NCR5380_mmio.c | 10 -- 4 files changed, 135 insertions(+), 197 deletions(-) delete mode 100644 drivers/scsi/g_NCR5380_mmio.c
drivers/scsi/Kconfig +7 -25
@@ -780,40 +780,22 @@ config SCSI_ISCI control unit found in the Intel(R) C600 series chipset. config SCSI_GENERIC_NCR5380 - tristate "Generic NCR5380/53c400 SCSI PIO support" + tristate "Generic NCR5380/53c400 SCSI" depends on ISA && SCSI select SCSI_SPI_ATTRS ---help--- - This is a driver for the old NCR 53c80 series of SCSI controllers - on boards using PIO. Most boards such as the Trantor T130 fit this - category, along with a large number of ISA 8bit controllers shipped - for free with SCSI scanners. If you have a PAS16, T128 or DMX3191 - you should select the specific driver for that card rather than - generic 5380 support. + This is a driver for the old NCR 53c80 series of SCSI controllers. + Most boards such as the Trantor T130 fit this category, along with + a large number of ISA 8bit controllers shipped for free with SCSI + scanners. If you have a PAS16, T128 or DMX3191 you should select the + specific driver for that card rather than generic 5380 support. It is explained in section 3.8 of the SCSI-HOWTO, available from - <http://www.tldp.org/docs.html#howto>. If it doesn't work out - of the box, you may have to change some settings in - <file:drivers/scsi/g_NCR5380.h>. + <http://www.tldp.org/docs.html#howto>. To compile this driver as a module, choose M here: the module will be called g_NCR5380. -config SCSI_GENERIC_NCR5380_MMIO - tristate "Generic NCR5380/53c400 SCSI MMIO support" - depends on ISA && SCSI - select SCSI_SPI_ATTRS - ---help--- - This is a driver for the old NCR 53c80 series of SCSI controllers - on boards using memory mapped I/O. - It is explained in section 3.8 of the SCSI-HOWTO, available from - <http://www.tldp.org/docs.html#howto>. If it doesn't work out - of the box, you may have to change some settings in - <file:drivers/scsi/g_NCR5380.h>. - - To compile this driver as a module, choose M here: the - module will be called g_NCR5380_mmio. - config SCSI_IPS tristate "IBM ServeRAID support" depends on PCI && SCSI
drivers/scsi/g_NCR5380.c +119 -138
396 lines not on this page · raw message
drivers/scsi/g_NCR5380.h +9 -24
@@ -14,44 +14,30 @@#ifndef GENERIC_NCR5380_H #define GENERIC_NCR5380_H -#ifndef SCSI_G_NCR5380_MEM #define DRV_MODULE_NAME "g_NCR5380"#define NCR5380_read (reg) \ - inb(instance->io_port + (reg)) + ioread8(((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \ + ((struct NCR5380_hostdata *)shost_priv(instance))->offset + \ + (reg))#define NCR5380_write (reg, value) \ - outb(value, instance->io_port + (reg)) + iowrite8(value, ((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \ + ((struct NCR5380_hostdata *)shost_priv(instance))->offset + \ + (reg))#define NCR5380_implementation_fields \ + int offset; \ + void __iomem *iomem; \ + resource_size_t iomem_size; \ int c400_ctl_status; \ int c400_blk_cnt; \ int c400_host_buf; \ int io_width; -#else -/* therefore SCSI_G_NCR5380_MEM */ -#define DRV_MODULE_NAME "g_NCR5380_mmio" -#define NCR53C400_mem_base 0x3880#define NCR53C400_host_buffer 0x3900#define NCR53C400_region_size 0x3a00 -#define NCR5380_read (reg) \ - readb(((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \ - NCR53C400_mem_base + (reg)) -#define NCR5380_write (reg, value) \ - writeb(value, ((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \ - NCR53C400_mem_base + (reg)) - -#define NCR5380_implementation_fields \ - void __iomem *iomem; \ - resource_size_t iomem_size; \ - int c400_ctl_status; \ - int c400_blk_cnt; \ - int c400_host_buf; - -#endif -#define NCR5380_dma_xfer_len (instance, cmd, phase) \ generic_NCR5380_dma_xfer_len(instance, cmd)#define NCR5380_dma_recv_setup generic_NCR5380_pread
@@ -73,4 +59,3 @@#define BOARD_HP_C2502 4#endif /* GENERIC_NCR5380_H */ -
drivers/scsi/g_NCR5380_mmio.c deleted +0 -10
@@ -1,10 +0,0 @@ -/* -* There is probably a nicer way to do this but this one makes -* pretty obvious what is happening. We rebuild the same file with -* different options for mmio versus pio. -*/ - -#define SCSI_G_NCR5380_MEM - -#include "g_NCR5380.c" -
Signature · 1 line
Ondrej Zary
Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio
Quoted 2 lines · Ondrej Zary
Merge the PIO and MMIO code (with the help of
ioport_map) ing_NCR5380and deleteg_NCR5380_mmio.
Awesome! this looks great to me, but we probably should thrown in a MODULE_ALIAS for g_NCR5380_mmio so that existing module configurations keep working.
drivers/scsi/g_NCR5380.h line 26
Quoted 9 lines
#define
NCR5380_read(reg)\drivers/scsi/g_NCR5380.h +6
-1+ioread8 (((struct NCR5380_hostdata *)shost_priv (instance))->iomem + \ + ((struct NCR5380_hostdata *)shost_priv (instance))->offset + \ + (reg))#define NCR5380_write (reg, value) \ - outb(value, instance->io_port + (reg)) + iowrite8(value, ((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \ + ((struct NCR5380_hostdata *)shost_priv(instance))->offset + \ + (reg))
Can we make these #defines point to inline helper functions that avoid the casting magic, e.g. something like
static inline void g_NCR5380_write(struct Scsi_Host *instance, u32 reg,
u8 value)
{
struct NCR5380_hostdata *host = shost_priv(instance);
iowrite8(value, host->iomem, host->offset + reg);
}#define NCR5380_write(reg, value) g_NCR5380_write(instance, reg, value)
Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio
Quoted 17 lines · Christoph Hellwig
drivers/scsi/g_NCR5380.h line 26
Quoted 9 lines · Ondrej Zary
#define
NCR5380_read(reg)\drivers/scsi/g_NCR5380.h +6
-1+ioread8 (((struct NCR5380_hostdata *)shost_priv (instance))->iomem + \ + ((struct NCR5380_hostdata *)shost_priv (instance))->offset + \ + (reg))#define NCR5380_write (reg, value) \ - outb(value, instance->io_port + (reg)) + iowrite8(value, ((struct NCR5380_hostdata *)shost_priv(instance))->iomem + \ + ((struct NCR5380_hostdata *)shost_priv(instance))->offset + \ + (reg))Can we make these #defines point to inline helper functions that avoid the casting magic, e.g. something like
static inline void g_NCR5380_write(struct
Scsi_Host*instance, u32 reg,
u8 value)
Quoted 8 lines
{ struct NCR5380_hostdata *host = shost_priv(instance); iowrite8(value, host->iomem, host->offset + reg); }#define NCR5380_write(reg, value) g_NCR5380_write(instance, reg, value)
Let's not do that yet. I have a patch series that fixes the type casting and related issues that I will post soon. I expect that Ondrej's patches will be ready before mine are, so I'll rebase mine on this work before I ask him to test my patches.
Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio
Quoted 4 lines · Finn Thain
Let's not do that yet. I have a patch series that fixes the type casting and related issues that I will post soon. I expect that Ondrej's patches will be ready before mine are, so I'll rebase mine on this work before I ask him to test my patches.
Ok, even better.
Re: [PATCH 4/3] g_NCR5380: Merge g_NCR5380 and g_NCR5380_mmio
In reply to Ondrej ZaryQuoted 26 lines · Ondrej Zary
Merge the PIO and MMIO code (with the help of
ioport_map) ing_NCR5380and deleteg_NCR5380_mmio.Signed-off-by Ondrej Zary <[email protected]>--- drivers/scsi/Kconfig | 32 ++--- drivers/scsi/g_NCR5380.c | 257 +++++++++++++++++++---------------------- drivers/scsi/g_NCR5380.h | 33 ++---- drivers/scsi/g_NCR5380_mmio.c | 10 -- 4 files changed, 135 insertions(+), 197 deletions(-) delete mode 100644 drivers/scsi/g_NCR5380_mmio.cdrivers/scsi/Kconfig +1
-2@@ -780,40 +780,22 @@ config SCSI_ISCI control unit found in the Intel(R) C600 series chipset. config SCSI_GENERIC_NCR5380 - tristate "Generic NCR5380/53c400 SCSI PIO support" + tristate "Generic NCR5380/53c400 SCSI" depends on ISA && SCSI select SCSI_SPI_ATTRS ---help--- - This is a driver for the old NCR 53c80 series of SCSI controllers
drivers/scsi/Kconfig config SCSI_ISCI · line 791
Quoted 10 lines
drivers/scsi/Kconfig +5
-5- on boards using PIO. Most boards such as the Trantor T130 fit this - category, along with a large number of ISA 8bit controllers shipped - for free with SCSI scanners. If you have a PAS16, T128 or DMX3191 - you should select the specific driver for that card rather than - generic 5380 support. + This is a driver for the old NCR 53c80 series of SCSI controllers. + Most boards such as the Trantor T130 fit this category, along with + a large number of ISA 8bit controllers shipped for free with SCSI + scanners. If you have a PAS16, T128 or DMX3191 you should select the + specific driver for that card rather than generic 5380 support.
The pas16 and t128 drivers were removed (see 4.9/scsi-queue). The DMX3191 isn't an ISA card, so it isn't relevant.
drivers/scsi/Kconfig config SCSI_ISCI · line 793
Quoted 6 lines
drivers/scsi/Kconfig +1
-3It is explained in section 3.8 of the SCSI-HOWTO, available from - <http://www.tldp.org/docs.html#howto>. If it doesn't work out - of the box, you may have to change some settings in - <file:drivers/scsi/g_NCR5380.h>. + <http://www.tldp.org/docs.html#howto>.
I didn't find anything useful at that url.
Therefore, please change the help text as follows:
drivers/scsi/Kconfig +5 -12
@@ -780,21 +780,14 @@ config SCSI_ISCI control unit found in the Intel(R) C600 series chipset. config SCSI_GENERIC_NCR5380 - tristate "Generic NCR5380/53c400 SCSI PIO support" + tristate "Generic NCR5380/53C400 ISA card SCSI controller support" depends on ISA && SCSI select SCSI_SPI_ATTRS ---help--- - This is a driver for the old NCR 53c80 series of SCSI controllers - on boards using PIO. Most boards such as the Trantor T130 fit this - category, along with a large number of ISA 8bit controllers shipped - for free with SCSI scanners. If you have a PAS16, T128 or DMX3191 - you should select the specific driver for that card rather than - generic 5380 support. - - It is explained in section 3.8 of the SCSI-HOWTO, available from - <http://www.tldp.org/docs.html#howto>. If it doesn't work out - of the box, you may have to change some settings in - <file:drivers/scsi/g_NCR5380.h>. + This is a driver for old ISA card SCSI controllers based on the + NCR 5380, 53C80, 53C400 and 53C400A, and compatible DTC devices. + Most boards such as the Trantor T130 fit this category, along + with various 8-bit and 16-bit ISA cards bundled with SCSI scanners. To compile this driver as a module, choose M here: the module will be called g_NCR5380.
The rest of the patch looks good (aside from the missing module alias that Chrisoph mentioned).
Thanks.