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qfprom.c
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/**
* LICENSE PLACEHOLDER
*
* @file qfprom.c
* @package OpenPST Extras - QFPROM Kernel Module
*
* @author Gassan Idriss <[email protected]>
*/
#include "qfprom.h"
int tz_qfprom_read_row(uint32_t address, uint32_t type, scm_qfprom_read_row_data_t* row_data)
{
int ret = 0;
scm_qfprom_read_row_req_t req = {};
scm_qfprom_read_row_resp_t resp = {};
struct ion_client *ion_clientp = NULL;
struct ion_handle *ion_row_data_handlep = NULL;
uint32_t row_data_phyaddr_len = 0;
ion_phys_addr_t row_data_phyaddr = 0;
scm_qfprom_read_row_data_t* row_datap;
ion_clientp = msm_ion_client_create(UINT_MAX, "tz_qfprom_read_row");
if (IS_ERR_OR_NULL(ion_clientp)) {
log("Error creating ion client\n");
return -EINVAL;
}
ion_row_data_handlep = ion_alloc(ion_clientp, sizeof(scm_qfprom_read_row_data_t),
sizeof(scm_qfprom_read_row_data_t), ION_HEAP(ION_QSECOM_HEAP_ID), 0);
if (IS_ERR_OR_NULL(ion_row_data_handlep)) {
log("Ion client could not retrieve the handle\n");
goto error;
}
if (ion_phys(ion_clientp, ion_row_data_handlep, &row_data_phyaddr, &row_data_phyaddr_len)) {
log("Ion conversion to physical address failed\n");
goto error;
}
req.address = address;
req.type = type;
req.row_data = row_data_phyaddr;
req.error = row_data_phyaddr + (sizeof(scm_qfprom_read_row_data_t) - sizeof(uint32_t));
ret = scm_call(TZ_SVC_FUSE, TZ_QFPROM_READ_ROW_ID, &req, sizeof(req), &resp, sizeof(resp));
if (ret) {
log("Reading row at 0x%08X (%d) failed. SCM call failed. %d\n", address, type, ret);
row_data->lsb = 0;
row_data->msb = 0;
row_data->error = ret;
} else {
row_datap = (scm_qfprom_read_row_data_t*)ion_map_kernel(ion_clientp, ion_row_data_handlep);
if (IS_ERR_OR_NULL(row_datap)) {
log("Ion memory mapping failed\n");
goto error;
}
if (row_datap->error) {
log("Error reading row at 0x%08X (%d). Error: %d\n", address, type, row_datap->error);
} else {
log("Row data at 0x%08X (%d) - LSB: 0x%08X - MSB: 0x%08X\n", address, type, row_datap->lsb, row_datap->msb);
}
row_data->lsb = row_datap->lsb;
row_data->msb = row_datap->msb;
row_data->error = row_datap->error;
}
ion_free(ion_clientp, ion_row_data_handlep);
ion_client_destroy(ion_clientp);
return ret;
error:
ion_free(ion_clientp, ion_row_data_handlep);
ion_client_destroy(ion_clientp);
return -EINVAL;
}
int tz_qfprom_write_row(uint32_t address, uint32_t lsb, uint32_t msb, uint32_t bus_clk_khz, scm_qfprom_write_row_data_t* row_data)
{
int ret = 0;
scm_qfprom_write_row_req_t req = {};
scm_qfprom_write_row_resp_t resp = {};
struct ion_client *ion_clientp = NULL;
struct ion_handle *ion_row_data_handlep = NULL;
uint32_t row_data_phyaddr_len = 0;
ion_phys_addr_t row_data_phyaddr = 0;
scm_qfprom_write_row_data_t* row_datap;
ion_clientp = msm_ion_client_create(UINT_MAX, "tz_qfprom_write_row");
if (IS_ERR_OR_NULL(ion_clientp)) {
log("Error creating ion client\n");
return -EINVAL;
}
ion_row_data_handlep = ion_alloc(ion_clientp, sizeof(scm_qfprom_write_row_data_t),
sizeof(scm_qfprom_write_row_data_t), ION_HEAP(ION_QSECOM_HEAP_ID), 0);
if (IS_ERR_OR_NULL(ion_row_data_handlep)) {
log("Ion client could not retrieve the handle\n");
goto error;
}
if (ion_phys(ion_clientp, ion_row_data_handlep, &row_data_phyaddr, &row_data_phyaddr_len)) {
log("Ion conversion to physical address failed\n");
goto error;
}
row_datap = (scm_qfprom_write_row_data_t*)ion_map_kernel(ion_clientp, ion_row_data_handlep);
if (IS_ERR_OR_NULL(row_datap)) {
log("Ion memory mapping failed\n");
goto error;
}
row_datap->lsb = lsb;
row_datap->msb = msb;
req.address = address;
req.bus_clk_khz = bus_clk_khz;
req.row_data = row_data_phyaddr;
req.error = row_data_phyaddr + (sizeof(scm_qfprom_write_row_data_t) - sizeof(uint32_t));
//ret = scm_call(TZ_SVC_FUSE, TZ_QFPROM_ROLLBACK_WRITE_ROW_ID, &req, sizeof(req), &resp, sizeof(resp));
ret = scm_call(TZ_SVC_FUSE, TZ_QFPROM_WRITE_ROW_ID, &req, sizeof(req), &resp, sizeof(resp));
if (ret) {
log("Writing row at 0x%08X faile. SCM call failed. %d\n", address, ret);
row_data->lsb = 0;
row_data->msb = 0;
row_data->error = ret;
} else {
if (row_datap->error) {
log("Error writing row at 0x%08X. Error: %d\n", address, row_datap->error);
} else {
log("Row data at 0x%08X - LSB: 0x%08X - MSB: 0x%08X\n", address, row_datap->lsb, row_datap->msb);
}
row_data->lsb = row_datap->lsb;
row_data->msb = row_datap->msb;
row_data->error = row_datap->error;
}
ion_free(ion_clientp, ion_row_data_handlep);
ion_client_destroy(ion_clientp);
return ret;
error:
ion_free(ion_clientp, ion_row_data_handlep);
ion_client_destroy(ion_clientp);
return -EINVAL;
}
int qfprom_read_direct(uint32_t address, scm_qfprom_read_row_data_t* row_data)
{
uint32_t direct_read_lsb;
uint32_t direct_read_msb;
void __iomem *direct_read_lsb_address;
void __iomem *direct_read_msb_address;
direct_read_lsb_address = ioremap(address, sizeof(uint32_t));
direct_read_msb_address = ioremap(address + sizeof(uint32_t), sizeof(uint32_t));
direct_read_lsb = (uint32_t) readl(direct_read_lsb_address);
direct_read_msb = (uint32_t) readl(direct_read_msb_address);
iounmap(direct_read_lsb_address);
iounmap(direct_read_msb_address);
log("Direct Read: 0x%08X - LSB: 0x%08X - MSB: 0x%08X\n",
address, direct_read_lsb, direct_read_msb
);
row_data->lsb = direct_read_lsb;
row_data->msb = direct_read_msb;
row_data->error = 0;
return 0;
}
int qfprom_write_direct(uint32_t address, uint32_t lsb, uint32_t msb, uint32_t bus_clk_khz, scm_qfprom_write_row_data_t* row_data)
{
log("Not Implemented");
return 0;
}