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lib: utils/ipi: Use fdt_driver for initialization

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The ipi driver subsystem does not need any extra data, so it can use
`struct fdt_driver` directly. The generic fdt_ipi_init() performs a
best-effort initialization of all matching DT nodes.

Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Samuel Holland
2024-11-11 14:02:51 -08:00
committed by Anup Patel
parent 333133edaa
commit 5fa510c5f6
5 changed files with 10 additions and 48 deletions
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42
lib/utils/ipi/fdt_ipi.c
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@@ -7,50 +7,16 @@
* Anup Patel <anup.patel@wdc.com>
*/
#include <sbi/sbi_error.h>
#include <sbi/sbi_scratch.h>
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/ipi/fdt_ipi.h>
/* List of FDT ipi drivers generated at compile time */
extern struct fdt_ipi *const fdt_ipi_drivers[];
extern const struct fdt_driver *const fdt_ipi_drivers[];
int fdt_ipi_init(void)
{
int pos, noff, rc;
struct fdt_ipi *drv;
const struct fdt_match *match;
const void *fdt = fdt_get_address();
for (pos = 0; fdt_ipi_drivers[pos]; pos++) {
drv = fdt_ipi_drivers[pos];
noff = -1;
while ((noff = fdt_find_match(fdt, noff,
drv->match_table, &match)) >= 0) {
if (!fdt_node_is_enabled(fdt, noff))
continue;
/* drv->cold_init must not be NULL */
if (drv->cold_init == NULL)
return SBI_EFAIL;
rc = drv->cold_init(fdt, noff, match);
if (rc == SBI_ENODEV)
continue;
if (rc)
return rc;
/*
* We will have multiple IPI devices on multi-die or
* multi-socket systems so we cannot break here.
*/
}
}
/*
* On some single-hart system there is no need for ipi,
* so we cannot return a failure here
* On some single-hart system there is no need for IPIs,
* so do not return a failure if no device is found.
*/
return 0;
return fdt_driver_init_all(fdt_get_address(), fdt_ipi_drivers);
}