redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

ieee1394: sbp2: convert from PCI DMA to generic DMA

Browse source 
API conversion without change in functionality

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2006-11-22 21:44:34 +01:00
parent d41bba2d3a
commit 9b7d9c096d
3 changed files with 62 additions and 68 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/ieee1394/Kconfig
View file

@ -120,7 +120,7 @@ comment "SBP-2 support (for storage devices) requires SCSI"
config IEEE1394_SBP2
tristate "SBP-2 support (Harddisks etc.)"
depends on IEEE1394 && SCSI && (PCI || BROKEN)
depends on IEEE1394 && SCSI
help
This option enables you to use SBP-2 devices connected to an IEEE
1394 bus. SBP-2 devices include storage devices like harddisks and

126
drivers/ieee1394/sbp2.c
View file

@ -48,7 +48,6 @@
* - make the parameter serialize_io configurable per device
* - move all requests to fetch agent registers into non-atomic context,
* replace all usages of sbp2util_node_write_no_wait by true transactions
* - convert to generic DMA mapping API to eliminate dependency on PCI
* Grep for inline FIXME comments below.
*/
@ -63,7 +62,6 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/stat.h>
@ -491,14 +489,14 @@ static int sbp2util_create_command_orb_pool(struct sbp2_lu *lu)
spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
return -ENOMEM;
}
cmd->command_orb_dma = pci_map_single(hi->host->pdev,
cmd->command_orb_dma = dma_map_single(&hi->host->device,
&cmd->command_orb,
sizeof(struct sbp2_command_orb),
PCI_DMA_TODEVICE);
cmd->sge_dma = pci_map_single(hi->host->pdev,
DMA_TO_DEVICE);
cmd->sge_dma = dma_map_single(&hi->host->device,
&cmd->scatter_gather_element,
sizeof(cmd->scatter_gather_element),
PCI_DMA_BIDIRECTIONAL);
DMA_BIDIRECTIONAL);
INIT_LIST_HEAD(&cmd->list);
list_add_tail(&cmd->list, &lu->cmd_orb_completed);
}
@ -517,12 +515,12 @@ static void sbp2util_remove_command_orb_pool(struct sbp2_lu *lu)
if (!list_empty(&lu->cmd_orb_completed))
list_for_each_safe(lh, next, &lu->cmd_orb_completed) {
cmd = list_entry(lh, struct sbp2_command_info, list);
pci_unmap_single(host->pdev, cmd->command_orb_dma,
dma_unmap_single(&host->device, cmd->command_orb_dma,
sizeof(struct sbp2_command_orb),
PCI_DMA_TODEVICE);
pci_unmap_single(host->pdev, cmd->sge_dma,
DMA_TO_DEVICE);
dma_unmap_single(&host->device, cmd->sge_dma,
sizeof(cmd->scatter_gather_element),
PCI_DMA_BIDIRECTIONAL);
DMA_BIDIRECTIONAL);
kfree(cmd);
}
spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
@ -602,17 +600,17 @@ static void sbp2util_mark_command_completed(struct sbp2_lu *lu,
if (cmd->cmd_dma) {
if (cmd->dma_type == CMD_DMA_SINGLE)
pci_unmap_single(host->pdev, cmd->cmd_dma,
dma_unmap_single(&host->device, cmd->cmd_dma,
cmd->dma_size, cmd->dma_dir);
else if (cmd->dma_type == CMD_DMA_PAGE)
pci_unmap_page(host->pdev, cmd->cmd_dma,
dma_unmap_page(&host->device, cmd->cmd_dma,
cmd->dma_size, cmd->dma_dir);
/* XXX: Check for CMD_DMA_NONE bug */
cmd->dma_type = CMD_DMA_NONE;
cmd->cmd_dma = 0;
}
if (cmd->sge_buffer) {
pci_unmap_sg(host->pdev, cmd->sge_buffer,
dma_unmap_sg(&host->device, cmd->sge_buffer,
cmd->dma_size, cmd->dma_dir);
cmd->sge_buffer = NULL;
}
@ -837,39 +835,39 @@ static int sbp2_start_device(struct sbp2_lu *lu)
struct sbp2_fwhost_info *hi = lu->hi;
int error;
lu->login_response = pci_alloc_consistent(hi->host->pdev,
lu->login_response = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_login_response),
&lu->login_response_dma);
&lu->login_response_dma, GFP_KERNEL);
if (!lu->login_response)
goto alloc_fail;
lu->query_logins_orb = pci_alloc_consistent(hi->host->pdev,
lu->query_logins_orb = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_query_logins_orb),
&lu->query_logins_orb_dma);
&lu->query_logins_orb_dma, GFP_KERNEL);
if (!lu->query_logins_orb)
goto alloc_fail;
lu->query_logins_response = pci_alloc_consistent(hi->host->pdev,
lu->query_logins_response = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_query_logins_response),
&lu->query_logins_response_dma);
&lu->query_logins_response_dma, GFP_KERNEL);
if (!lu->query_logins_response)
goto alloc_fail;
lu->reconnect_orb = pci_alloc_consistent(hi->host->pdev,
lu->reconnect_orb = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_reconnect_orb),
&lu->reconnect_orb_dma);
&lu->reconnect_orb_dma, GFP_KERNEL);
if (!lu->reconnect_orb)
goto alloc_fail;
lu->logout_orb = pci_alloc_consistent(hi->host->pdev,
lu->logout_orb = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_logout_orb),
&lu->logout_orb_dma);
&lu->logout_orb_dma, GFP_KERNEL);
if (!lu->logout_orb)
goto alloc_fail;
lu->login_orb = pci_alloc_consistent(hi->host->pdev,
lu->login_orb = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_login_orb),
&lu->login_orb_dma);
&lu->login_orb_dma, GFP_KERNEL);
if (!lu->login_orb)
goto alloc_fail;
@ -930,32 +928,32 @@ static void sbp2_remove_device(struct sbp2_lu *lu)
list_del(&lu->lu_list);
if (lu->login_response)
pci_free_consistent(hi->host->pdev,
dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_login_response),
lu->login_response,
lu->login_response_dma);
if (lu->login_orb)
pci_free_consistent(hi->host->pdev,
dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_login_orb),
lu->login_orb,
lu->login_orb_dma);
if (lu->reconnect_orb)
pci_free_consistent(hi->host->pdev,
dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_reconnect_orb),
lu->reconnect_orb,
lu->reconnect_orb_dma);
if (lu->logout_orb)
pci_free_consistent(hi->host->pdev,
dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_logout_orb),
lu->logout_orb,
lu->logout_orb_dma);
if (lu->query_logins_orb)
pci_free_consistent(hi->host->pdev,
dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_query_logins_orb),
lu->query_logins_orb,
lu->query_logins_orb_dma);
if (lu->query_logins_response)
pci_free_consistent(hi->host->pdev,
dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_query_logins_response),
lu->query_logins_response,
lu->query_logins_response_dma);
@ -1446,7 +1444,7 @@ static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb,
cmd->dma_size = sgpnt[0].length;
cmd->dma_type = CMD_DMA_PAGE;
cmd->cmd_dma = pci_map_page(hi->host->pdev,
cmd->cmd_dma = dma_map_page(&hi->host->device,
sgpnt[0].page, sgpnt[0].offset,
cmd->dma_size, cmd->dma_dir);
@ -1458,7 +1456,7 @@ static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb,
&cmd->scatter_gather_element[0];
u32 sg_count, sg_len;
dma_addr_t sg_addr;
int i, count = pci_map_sg(hi->host->pdev, sgpnt, scsi_use_sg,
int i, count = dma_map_sg(&hi->host->device, sgpnt, scsi_use_sg,
dma_dir);
cmd->dma_size = scsi_use_sg;
@ -1509,7 +1507,7 @@ static void sbp2_prep_command_orb_no_sg(struct sbp2_command_orb *orb,
cmd->dma_dir = dma_dir;
cmd->dma_size = scsi_request_bufflen;
cmd->dma_type = CMD_DMA_SINGLE;
cmd->cmd_dma = pci_map_single(hi->host->pdev, scsi_request_buffer,
cmd->cmd_dma = dma_map_single(&hi->host->device, scsi_request_buffer,
cmd->dma_size, cmd->dma_dir);
orb->data_descriptor_hi = ORB_SET_NODE_ID(hi->host->node_id);
orb->misc |= ORB_SET_DIRECTION(orb_direction);
@ -1627,12 +1625,12 @@ static void sbp2_link_orb_command(struct sbp2_lu *lu,
size_t length;
unsigned long flags;
pci_dma_sync_single_for_device(hi->host->pdev, cmd->command_orb_dma,
sizeof(struct sbp2_command_orb),
PCI_DMA_TODEVICE);
pci_dma_sync_single_for_device(hi->host->pdev, cmd->sge_dma,
sizeof(cmd->scatter_gather_element),
PCI_DMA_BIDIRECTIONAL);
dma_sync_single_for_device(&hi->host->device, cmd->command_orb_dma,
sizeof(struct sbp2_command_orb),
DMA_TO_DEVICE);
dma_sync_single_for_device(&hi->host->device, cmd->sge_dma,
sizeof(cmd->scatter_gather_element),
DMA_BIDIRECTIONAL);
/* check to see if there are any previous orbs to use */
spin_lock_irqsave(&lu->cmd_orb_lock, flags);
@ -1656,16 +1654,16 @@ static void sbp2_link_orb_command(struct sbp2_lu *lu,
* The target's fetch agent may or may not have read this
* previous ORB yet.
*/
pci_dma_sync_single_for_cpu(hi->host->pdev, last_orb_dma,
sizeof(struct sbp2_command_orb),
PCI_DMA_TODEVICE);
dma_sync_single_for_cpu(&hi->host->device, last_orb_dma,
sizeof(struct sbp2_command_orb),
DMA_TO_DEVICE);
last_orb->next_ORB_lo = cpu_to_be32(cmd->command_orb_dma);
wmb();
/* Tells hardware that this pointer is valid */
last_orb->next_ORB_hi = 0;
pci_dma_sync_single_for_device(hi->host->pdev, last_orb_dma,
sizeof(struct sbp2_command_orb),
PCI_DMA_TODEVICE);
dma_sync_single_for_device(&hi->host->device, last_orb_dma,
sizeof(struct sbp2_command_orb),
DMA_TO_DEVICE);
addr += SBP2_DOORBELL_OFFSET;
data[0] = 0;
length = 4;
@ -1792,14 +1790,12 @@ static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid,
else
cmd = sbp2util_find_command_for_orb(lu, sb->ORB_offset_lo);
if (cmd) {
pci_dma_sync_single_for_cpu(hi->host->pdev,
cmd->command_orb_dma,
sizeof(struct sbp2_command_orb),
PCI_DMA_TODEVICE);
pci_dma_sync_single_for_cpu(hi->host->pdev,
cmd->sge_dma,
sizeof(cmd->scatter_gather_element),
PCI_DMA_BIDIRECTIONAL);
dma_sync_single_for_cpu(&hi->host->device, cmd->command_orb_dma,
sizeof(struct sbp2_command_orb),
DMA_TO_DEVICE);
dma_sync_single_for_cpu(&hi->host->device, cmd->sge_dma,
sizeof(cmd->scatter_gather_element),
DMA_BIDIRECTIONAL);
/* Grab SCSI command pointers and check status. */
/*
* FIXME: If the src field in the status is 1, the ORB DMA must
@ -1935,13 +1931,12 @@ static void sbp2scsi_complete_all_commands(struct sbp2_lu *lu, u32 status)
while (!list_empty(&lu->cmd_orb_inuse)) {
lh = lu->cmd_orb_inuse.next;
cmd = list_entry(lh, struct sbp2_command_info, list);
pci_dma_sync_single_for_cpu(hi->host->pdev,
cmd->command_orb_dma,
sizeof(struct sbp2_command_orb),
PCI_DMA_TODEVICE);
pci_dma_sync_single_for_cpu(hi->host->pdev, cmd->sge_dma,
sizeof(cmd->scatter_gather_element),
PCI_DMA_BIDIRECTIONAL);
dma_sync_single_for_cpu(&hi->host->device, cmd->command_orb_dma,
sizeof(struct sbp2_command_orb),
DMA_TO_DEVICE);
dma_sync_single_for_cpu(&hi->host->device, cmd->sge_dma,
sizeof(cmd->scatter_gather_element),
DMA_BIDIRECTIONAL);
sbp2util_mark_command_completed(lu, cmd);
if (cmd->Current_SCpnt) {
cmd->Current_SCpnt->result = status << 16;
@ -2064,14 +2059,13 @@ static int sbp2scsi_abort(struct scsi_cmnd *SCpnt)
spin_lock_irqsave(&lu->cmd_orb_lock, flags);
cmd = sbp2util_find_command_for_SCpnt(lu, SCpnt);
if (cmd) {
pci_dma_sync_single_for_cpu(hi->host->pdev,
dma_sync_single_for_cpu(&hi->host->device,
cmd->command_orb_dma,
sizeof(struct sbp2_command_orb),
PCI_DMA_TODEVICE);
pci_dma_sync_single_for_cpu(hi->host->pdev,
cmd->sge_dma,
DMA_TO_DEVICE);
dma_sync_single_for_cpu(&hi->host->device, cmd->sge_dma,
sizeof(cmd->scatter_gather_element),
PCI_DMA_BIDIRECTIONAL);
DMA_BIDIRECTIONAL);
sbp2util_mark_command_completed(lu, cmd);
if (cmd->Current_SCpnt) {
cmd->Current_SCpnt->result = DID_ABORT << 16;

2
drivers/ieee1394/sbp2.h
View file

@ -263,7 +263,7 @@ struct sbp2_command_info {
dma_addr_t cmd_dma;
enum sbp2_dma_types dma_type;
unsigned long dma_size;
int dma_dir;
enum dma_data_direction dma_dir;
};
/* Per FireWire host */